./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.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 fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:42:23,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:42:23,401 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:42:23,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:42:23,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:42:23,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:42:23,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:42:23,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:42:23,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:42:23,429 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:42:23,429 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:42:23,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:42:23,430 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:42:23,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:42:23,430 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:42:23,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:42:23,431 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:42:23,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:42:23,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:42:23,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:42:23,432 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 -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2025-02-06 04:42:23,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:42:23,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:42:23,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:42:23,650 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:42:23,651 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:42:23,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-02-06 04:42:24,767 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/120e980ed/a619cd7bdd674cb89ad30ee962723e61/FLAG1a09d50e6 [2025-02-06 04:42:24,980 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:42:24,980 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-02-06 04:42:24,992 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/120e980ed/a619cd7bdd674cb89ad30ee962723e61/FLAG1a09d50e6 [2025-02-06 04:42:25,009 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/120e980ed/a619cd7bdd674cb89ad30ee962723e61 [2025-02-06 04:42:25,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:42:25,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:42:25,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:42:25,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:42:25,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:42:25,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3f5dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25, skipping insertion in model container [2025-02-06 04:42:25,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,029 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:42:25,134 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c[2063,2076] [2025-02-06 04:42:25,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:42:25,143 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:42:25,152 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c[2063,2076] [2025-02-06 04:42:25,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:42:25,161 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:42:25,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25 WrapperNode [2025-02-06 04:42:25,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:42:25,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:42:25,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:42:25,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:42:25,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,181 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2025-02-06 04:42:25,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:42:25,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:42:25,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:42:25,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:42:25,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,196 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]. [2025-02-06 04:42:25,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,198 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:42:25,204 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:42:25,207 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:42:25,207 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:42:25,208 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (1/1) ... [2025-02-06 04:42:25,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:42:25,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:25,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:42:25,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:42:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:42:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:42:25,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:42:25,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:42:25,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:42:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:42:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:42:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:42:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:42:25,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:42:25,257 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:42:25,320 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:42:25,321 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:42:25,448 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:42:25,449 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:42:25,531 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:42:25,531 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:42:25,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:42:25 BoogieIcfgContainer [2025-02-06 04:42:25,531 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:42:25,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:42:25,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:42:25,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:42:25,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:42:25" (1/3) ... [2025-02-06 04:42:25,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e22c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:42:25, skipping insertion in model container [2025-02-06 04:42:25,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:25" (2/3) ... [2025-02-06 04:42:25,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e22c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:42:25, skipping insertion in model container [2025-02-06 04:42:25,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:42:25" (3/3) ... [2025-02-06 04:42:25,542 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2025-02-06 04:42:25,554 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:42:25,555 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr.wvr.c that has 3 procedures, 20 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-06 04:42:25,556 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:42:25,589 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 04:42:25,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 56 flow [2025-02-06 04:42:25,630 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2025-02-06 04:42:25,632 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:42:25,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 2/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-02-06 04:42:25,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 21 transitions, 56 flow [2025-02-06 04:42:25,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 18 transitions, 48 flow [2025-02-06 04:42:25,643 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:42:25,653 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;@25c4f040, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:42:25,654 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:42:25,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:42:25,659 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-02-06 04:42:25,659 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:42:25,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:25,660 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:25,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:25,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:25,664 INFO L85 PathProgramCache]: Analyzing trace with hash -298111076, now seen corresponding path program 1 times [2025-02-06 04:42:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:25,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293587454] [2025-02-06 04:42:25,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:25,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:25,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 04:42:25,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:42:25,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:25,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:25,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:25,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293587454] [2025-02-06 04:42:25,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293587454] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:25,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:25,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:42:25,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102917567] [2025-02-06 04:42:25,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:25,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:42:25,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:25,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:42:25,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:42:25,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:25,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:25,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:25,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:25,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:25,984 INFO L124 PetriNetUnfolderBase]: 70/140 cut-off events. [2025-02-06 04:42:25,984 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 04:42:25,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 140 events. 70/140 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 446 event pairs, 31 based on Foata normal form. 8/147 useless extension candidates. Maximal degree in co-relation 255. Up to 86 conditions per place. [2025-02-06 04:42:25,986 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 20 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2025-02-06 04:42:25,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 113 flow [2025-02-06 04:42:25,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:42:25,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:42:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2025-02-06 04:42:25,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-02-06 04:42:25,995 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 48 flow. Second operand 4 states and 44 transitions. [2025-02-06 04:42:25,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 113 flow [2025-02-06 04:42:25,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 26 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:42:26,001 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2025-02-06 04:42:26,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2025-02-06 04:42:26,006 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2025-02-06 04:42:26,006 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2025-02-06 04:42:26,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:26,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:26,007 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:26,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:42:26,007 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:26,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:26,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2125375345, now seen corresponding path program 1 times [2025-02-06 04:42:26,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:26,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355721611] [2025-02-06 04:42:26,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:26,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:42:26,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:42:26,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:26,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:26,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:26,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:26,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355721611] [2025-02-06 04:42:26,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355721611] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:26,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:26,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:42:26,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11633360] [2025-02-06 04:42:26,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:26,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:42:26,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:26,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:42:26,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:42:26,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:26,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:26,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:26,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:26,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:26,192 INFO L124 PetriNetUnfolderBase]: 89/183 cut-off events. [2025-02-06 04:42:26,192 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-02-06 04:42:26,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 183 events. 89/183 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 621 event pairs, 49 based on Foata normal form. 13/193 useless extension candidates. Maximal degree in co-relation 87. Up to 124 conditions per place. [2025-02-06 04:42:26,194 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2025-02-06 04:42:26,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 129 flow [2025-02-06 04:42:26,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:42:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:42:26,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2025-02-06 04:42:26,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2025-02-06 04:42:26,195 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 43 transitions. [2025-02-06 04:42:26,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 129 flow [2025-02-06 04:42:26,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:42:26,196 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2025-02-06 04:42:26,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2025-02-06 04:42:26,196 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2025-02-06 04:42:26,197 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2025-02-06 04:42:26,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:26,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:26,197 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:26,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:42:26,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:26,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1496602983, now seen corresponding path program 1 times [2025-02-06 04:42:26,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:26,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880528387] [2025-02-06 04:42:26,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:26,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:26,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:42:26,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:26,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:26,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:26,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880528387] [2025-02-06 04:42:26,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880528387] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568348961] [2025-02-06 04:42:26,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:26,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:26,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:26,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:26,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:42:26,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:42:26,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:26,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:26,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:26,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:42:26,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:26,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:26,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568348961] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:26,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:42:26,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 5 [2025-02-06 04:42:26,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723305847] [2025-02-06 04:42:26,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:26,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:42:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:26,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:42:26,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:42:26,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:26,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:26,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:26,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:26,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:26,746 INFO L124 PetriNetUnfolderBase]: 153/309 cut-off events. [2025-02-06 04:42:26,747 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-02-06 04:42:26,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 309 events. 153/309 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1178 event pairs, 23 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 236. Up to 97 conditions per place. [2025-02-06 04:42:26,749 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 35 selfloop transitions, 5 changer transitions 3/46 dead transitions. [2025-02-06 04:42:26,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 46 transitions, 238 flow [2025-02-06 04:42:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:42:26,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:42:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2025-02-06 04:42:26,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-02-06 04:42:26,751 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 4 states and 59 transitions. [2025-02-06 04:42:26,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 46 transitions, 238 flow [2025-02-06 04:42:26,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:42:26,753 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 98 flow [2025-02-06 04:42:26,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2025-02-06 04:42:26,753 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2025-02-06 04:42:26,753 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 98 flow [2025-02-06 04:42:26,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:26,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:26,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:26,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:26,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:26,954 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:26,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:26,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1875653809, now seen corresponding path program 2 times [2025-02-06 04:42:26,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:26,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768980391] [2025-02-06 04:42:26,955 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:26,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:26,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:26,967 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:26,967 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:26,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:27,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:27,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768980391] [2025-02-06 04:42:27,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768980391] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:27,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741635466] [2025-02-06 04:42:27,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:27,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:27,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:27,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:27,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:42:27,086 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:27,096 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:27,096 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:27,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:27,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 04:42:27,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:27,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:27,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741635466] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:27,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:27,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 04:42:27,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915150851] [2025-02-06 04:42:27,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:27,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:42:27,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:27,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:42:27,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:42:27,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2025-02-06 04:42:27,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 98 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:27,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:27,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2025-02-06 04:42:27,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:27,413 INFO L124 PetriNetUnfolderBase]: 286/530 cut-off events. [2025-02-06 04:42:27,413 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2025-02-06 04:42:27,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 530 events. 286/530 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2183 event pairs, 42 based on Foata normal form. 18/547 useless extension candidates. Maximal degree in co-relation 507. Up to 242 conditions per place. [2025-02-06 04:42:27,416 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 40 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2025-02-06 04:42:27,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 335 flow [2025-02-06 04:42:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:42:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:42:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2025-02-06 04:42:27,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2025-02-06 04:42:27,418 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 98 flow. Second operand 6 states and 64 transitions. [2025-02-06 04:42:27,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 335 flow [2025-02-06 04:42:27,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 55 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:42:27,419 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 219 flow [2025-02-06 04:42:27,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2025-02-06 04:42:27,420 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 14 predicate places. [2025-02-06 04:42:27,420 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 219 flow [2025-02-06 04:42:27,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:27,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:27,420 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:27,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 04:42:27,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:27,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:27,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash 796465714, now seen corresponding path program 3 times [2025-02-06 04:42:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:27,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667295961] [2025-02-06 04:42:27,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:27,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:27,627 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:27,634 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:27,635 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:27,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:27,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:27,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667295961] [2025-02-06 04:42:27,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667295961] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:27,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169976112] [2025-02-06 04:42:27,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:27,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:27,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:27,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:27,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:42:27,805 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:27,818 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:27,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:27,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:27,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:42:27,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:27,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:28,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169976112] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:28,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:28,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2025-02-06 04:42:28,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537722529] [2025-02-06 04:42:28,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:28,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 04:42:28,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:28,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 04:42:28,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:42:28,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:28,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 219 flow. Second operand has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:28,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:28,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:28,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:28,970 INFO L124 PetriNetUnfolderBase]: 627/1078 cut-off events. [2025-02-06 04:42:28,970 INFO L125 PetriNetUnfolderBase]: For 1711/1711 co-relation queries the response was YES. [2025-02-06 04:42:28,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 1078 events. 627/1078 cut-off events. For 1711/1711 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4755 event pairs, 3 based on Foata normal form. 29/1107 useless extension candidates. Maximal degree in co-relation 2364. Up to 211 conditions per place. [2025-02-06 04:42:28,976 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 118 selfloop transitions, 97 changer transitions 23/239 dead transitions. [2025-02-06 04:42:28,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 239 transitions, 1673 flow [2025-02-06 04:42:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-06 04:42:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-02-06 04:42:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 321 transitions. [2025-02-06 04:42:28,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40225563909774437 [2025-02-06 04:42:28,979 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 219 flow. Second operand 38 states and 321 transitions. [2025-02-06 04:42:28,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 239 transitions, 1673 flow [2025-02-06 04:42:28,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 239 transitions, 1665 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-02-06 04:42:28,988 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 1096 flow [2025-02-06 04:42:28,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1096, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2025-02-06 04:42:28,988 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 71 predicate places. [2025-02-06 04:42:28,988 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 1096 flow [2025-02-06 04:42:28,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:28,989 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:28,989 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:28,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:42:29,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:29,193 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:29,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2082362812, now seen corresponding path program 4 times [2025-02-06 04:42:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707493997] [2025-02-06 04:42:29,194 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:29,198 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:29,201 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 04:42:29,201 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:42:29,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:29,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:29,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707493997] [2025-02-06 04:42:29,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707493997] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:29,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748495576] [2025-02-06 04:42:29,261 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:29,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:29,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:29,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:29,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:42:29,289 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:29,297 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 04:42:29,297 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:42:29,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:29,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:42:29,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:29,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:29,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748495576] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:29,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:29,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-02-06 04:42:29,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676815165] [2025-02-06 04:42:29,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:29,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:42:29,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:29,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:42:29,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:42:29,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:29,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 1096 flow. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 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) [2025-02-06 04:42:29,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:29,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:29,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:29,762 INFO L124 PetriNetUnfolderBase]: 889/1517 cut-off events. [2025-02-06 04:42:29,762 INFO L125 PetriNetUnfolderBase]: For 15304/15304 co-relation queries the response was YES. [2025-02-06 04:42:29,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 1517 events. 889/1517 cut-off events. For 15304/15304 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7179 event pairs, 75 based on Foata normal form. 71/1588 useless extension candidates. Maximal degree in co-relation 7185. Up to 391 conditions per place. [2025-02-06 04:42:29,779 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 129 selfloop transitions, 135 changer transitions 0/265 dead transitions. [2025-02-06 04:42:29,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 265 transitions, 3003 flow [2025-02-06 04:42:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 04:42:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 04:42:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 153 transitions. [2025-02-06 04:42:29,781 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2025-02-06 04:42:29,781 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 1096 flow. Second operand 16 states and 153 transitions. [2025-02-06 04:42:29,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 265 transitions, 3003 flow [2025-02-06 04:42:29,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 2778 flow, removed 105 selfloop flow, removed 4 redundant places. [2025-02-06 04:42:29,819 INFO L231 Difference]: Finished difference. Result has 115 places, 182 transitions, 2204 flow [2025-02-06 04:42:29,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2204, PETRI_PLACES=115, PETRI_TRANSITIONS=182} [2025-02-06 04:42:29,820 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 92 predicate places. [2025-02-06 04:42:29,820 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 182 transitions, 2204 flow [2025-02-06 04:42:29,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 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) [2025-02-06 04:42:29,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:29,820 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:29,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:30,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-06 04:42:30,025 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:30,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash 596192042, now seen corresponding path program 5 times [2025-02-06 04:42:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:30,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830362381] [2025-02-06 04:42:30,026 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:30,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:30,030 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:30,033 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:30,033 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:30,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:30,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:30,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830362381] [2025-02-06 04:42:30,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830362381] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:30,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220975224] [2025-02-06 04:42:30,099 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:30,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:30,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:30,102 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:30,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:42:30,126 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:30,135 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:30,135 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:30,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:30,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:42:30,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:30,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220975224] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:30,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:30,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-02-06 04:42:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748392285] [2025-02-06 04:42:30,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:30,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 04:42:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:30,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 04:42:30,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-02-06 04:42:30,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:30,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 182 transitions, 2204 flow. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:30,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:30,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:30,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:31,135 INFO L124 PetriNetUnfolderBase]: 1485/2536 cut-off events. [2025-02-06 04:42:31,135 INFO L125 PetriNetUnfolderBase]: For 41232/41232 co-relation queries the response was YES. [2025-02-06 04:42:31,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16414 conditions, 2536 events. 1485/2536 cut-off events. For 41232/41232 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13576 event pairs, 42 based on Foata normal form. 57/2593 useless extension candidates. Maximal degree in co-relation 13376. Up to 477 conditions per place. [2025-02-06 04:42:31,160 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 171 selfloop transitions, 307 changer transitions 6/485 dead transitions. [2025-02-06 04:42:31,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 485 transitions, 6636 flow [2025-02-06 04:42:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-06 04:42:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-02-06 04:42:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 333 transitions. [2025-02-06 04:42:31,162 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41729323308270677 [2025-02-06 04:42:31,162 INFO L175 Difference]: Start difference. First operand has 115 places, 182 transitions, 2204 flow. Second operand 38 states and 333 transitions. [2025-02-06 04:42:31,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 485 transitions, 6636 flow [2025-02-06 04:42:31,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 485 transitions, 6332 flow, removed 152 selfloop flow, removed 0 redundant places. [2025-02-06 04:42:31,241 INFO L231 Difference]: Finished difference. Result has 177 places, 371 transitions, 5479 flow [2025-02-06 04:42:31,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5479, PETRI_PLACES=177, PETRI_TRANSITIONS=371} [2025-02-06 04:42:31,242 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 154 predicate places. [2025-02-06 04:42:31,242 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 371 transitions, 5479 flow [2025-02-06 04:42:31,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:31,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:31,243 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:31,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:31,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:31,444 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:31,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1035224418, now seen corresponding path program 6 times [2025-02-06 04:42:31,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:31,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394007260] [2025-02-06 04:42:31,445 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:31,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:31,449 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:31,453 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:31,453 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:42:31,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:31,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:31,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394007260] [2025-02-06 04:42:31,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394007260] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:31,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097345353] [2025-02-06 04:42:31,528 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:31,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:31,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:31,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:31,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 04:42:31,558 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:31,566 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:31,567 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:42:31,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:31,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:42:31,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:31,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:31,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097345353] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:31,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:31,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2025-02-06 04:42:31,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780058125] [2025-02-06 04:42:31,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:31,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 04:42:31,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:31,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 04:42:31,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:42:31,745 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:31,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 371 transitions, 5479 flow. Second operand has 20 states, 20 states have (on average 5.35) internal successors, (107), 20 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:31,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:31,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:31,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:32,750 INFO L124 PetriNetUnfolderBase]: 1655/2787 cut-off events. [2025-02-06 04:42:32,751 INFO L125 PetriNetUnfolderBase]: For 79802/79802 co-relation queries the response was YES. [2025-02-06 04:42:32,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22991 conditions, 2787 events. 1655/2787 cut-off events. For 79802/79802 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14831 event pairs, 65 based on Foata normal form. 26/2813 useless extension candidates. Maximal degree in co-relation 22272. Up to 510 conditions per place. [2025-02-06 04:42:32,781 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 233 selfloop transitions, 332 changer transitions 3/569 dead transitions. [2025-02-06 04:42:32,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 569 transitions, 9872 flow [2025-02-06 04:42:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 04:42:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-02-06 04:42:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 274 transitions. [2025-02-06 04:42:32,782 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2025-02-06 04:42:32,782 INFO L175 Difference]: Start difference. First operand has 177 places, 371 transitions, 5479 flow. Second operand 32 states and 274 transitions. [2025-02-06 04:42:32,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 569 transitions, 9872 flow [2025-02-06 04:42:33,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 569 transitions, 9220 flow, removed 306 selfloop flow, removed 6 redundant places. [2025-02-06 04:42:33,045 INFO L231 Difference]: Finished difference. Result has 211 places, 460 transitions, 7606 flow [2025-02-06 04:42:33,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=4997, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7606, PETRI_PLACES=211, PETRI_TRANSITIONS=460} [2025-02-06 04:42:33,046 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 188 predicate places. [2025-02-06 04:42:33,046 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 460 transitions, 7606 flow [2025-02-06 04:42:33,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.35) internal successors, (107), 20 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:33,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:33,046 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:33,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:33,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-06 04:42:33,247 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:33,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:33,247 INFO L85 PathProgramCache]: Analyzing trace with hash -696176038, now seen corresponding path program 7 times [2025-02-06 04:42:33,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:33,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947641288] [2025-02-06 04:42:33,248 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:33,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:33,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:42:33,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:33,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:33,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947641288] [2025-02-06 04:42:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947641288] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872206248] [2025-02-06 04:42:33,370 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:33,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:33,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:33,373 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:33,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 04:42:33,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:42:33,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:33,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:33,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:33,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:42:33,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:33,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:33,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872206248] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:33,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:33,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2025-02-06 04:42:33,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528559076] [2025-02-06 04:42:33,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:33,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:42:33,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:33,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:42:33,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:42:33,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:33,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 460 transitions, 7606 flow. Second operand has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:33,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:33,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:33,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:35,028 INFO L124 PetriNetUnfolderBase]: 2861/4826 cut-off events. [2025-02-06 04:42:35,029 INFO L125 PetriNetUnfolderBase]: For 158948/158948 co-relation queries the response was YES. [2025-02-06 04:42:35,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39699 conditions, 4826 events. 2861/4826 cut-off events. For 158948/158948 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28335 event pairs, 23 based on Foata normal form. 136/4962 useless extension candidates. Maximal degree in co-relation 39123. Up to 944 conditions per place. [2025-02-06 04:42:35,079 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 392 selfloop transitions, 651 changer transitions 5/1049 dead transitions. [2025-02-06 04:42:35,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 1049 transitions, 18500 flow [2025-02-06 04:42:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-06 04:42:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-02-06 04:42:35,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 385 transitions. [2025-02-06 04:42:35,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39855072463768115 [2025-02-06 04:42:35,082 INFO L175 Difference]: Start difference. First operand has 211 places, 460 transitions, 7606 flow. Second operand 46 states and 385 transitions. [2025-02-06 04:42:35,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 1049 transitions, 18500 flow [2025-02-06 04:42:35,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1049 transitions, 17610 flow, removed 344 selfloop flow, removed 9 redundant places. [2025-02-06 04:42:35,729 INFO L231 Difference]: Finished difference. Result has 270 places, 812 transitions, 15277 flow [2025-02-06 04:42:35,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=6818, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=15277, PETRI_PLACES=270, PETRI_TRANSITIONS=812} [2025-02-06 04:42:35,730 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 247 predicate places. [2025-02-06 04:42:35,730 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 812 transitions, 15277 flow [2025-02-06 04:42:35,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:35,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:35,730 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:35,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:35,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:35,935 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:35,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:35,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1399088990, now seen corresponding path program 8 times [2025-02-06 04:42:35,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:35,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337709480] [2025-02-06 04:42:35,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:35,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:35,938 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:35,941 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:35,941 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:35,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:36,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337709480] [2025-02-06 04:42:36,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337709480] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539948949] [2025-02-06 04:42:36,012 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:36,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:36,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:36,014 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:36,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 04:42:36,037 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:36,046 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:36,046 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:36,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:36,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:42:36,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:36,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:36,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539948949] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:36,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:36,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2025-02-06 04:42:36,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485248426] [2025-02-06 04:42:36,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:36,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 04:42:36,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:36,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 04:42:36,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:42:36,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:36,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 812 transitions, 15277 flow. Second operand has 20 states, 20 states have (on average 5.35) internal successors, (107), 20 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:36,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:36,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:36,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:38,408 INFO L124 PetriNetUnfolderBase]: 4073/6765 cut-off events. [2025-02-06 04:42:38,408 INFO L125 PetriNetUnfolderBase]: For 229457/229457 co-relation queries the response was YES. [2025-02-06 04:42:38,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62907 conditions, 6765 events. 4073/6765 cut-off events. For 229457/229457 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 41492 event pairs, 126 based on Foata normal form. 36/6801 useless extension candidates. Maximal degree in co-relation 61464. Up to 1266 conditions per place. [2025-02-06 04:42:38,484 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 315 selfloop transitions, 1108 changer transitions 5/1429 dead transitions. [2025-02-06 04:42:38,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 1429 transitions, 30227 flow [2025-02-06 04:42:38,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-06 04:42:38,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-02-06 04:42:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 362 transitions. [2025-02-06 04:42:38,489 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3917748917748918 [2025-02-06 04:42:38,489 INFO L175 Difference]: Start difference. First operand has 270 places, 812 transitions, 15277 flow. Second operand 44 states and 362 transitions. [2025-02-06 04:42:38,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 1429 transitions, 30227 flow [2025-02-06 04:42:39,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1429 transitions, 29086 flow, removed 501 selfloop flow, removed 7 redundant places. [2025-02-06 04:42:39,942 INFO L231 Difference]: Finished difference. Result has 326 places, 1287 transitions, 28051 flow [2025-02-06 04:42:39,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=14860, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=661, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=28051, PETRI_PLACES=326, PETRI_TRANSITIONS=1287} [2025-02-06 04:42:39,943 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 303 predicate places. [2025-02-06 04:42:39,943 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 1287 transitions, 28051 flow [2025-02-06 04:42:39,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.35) internal successors, (107), 20 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:39,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:39,944 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:39,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:40,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:40,148 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:40,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash -271022152, now seen corresponding path program 9 times [2025-02-06 04:42:40,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:40,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494829266] [2025-02-06 04:42:40,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:40,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:40,151 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:40,155 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:40,156 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:40,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494829266] [2025-02-06 04:42:40,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494829266] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877938367] [2025-02-06 04:42:40,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:40,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:40,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:40,237 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:40,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 04:42:40,259 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:40,266 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:40,266 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:40,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:40,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:42:40,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:40,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:40,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877938367] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:40,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:40,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2025-02-06 04:42:40,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105114970] [2025-02-06 04:42:40,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:40,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 04:42:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:40,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 04:42:40,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:42:40,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:40,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1287 transitions, 28051 flow. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:40,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:40,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:40,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:43,228 INFO L124 PetriNetUnfolderBase]: 4719/7842 cut-off events. [2025-02-06 04:42:43,228 INFO L125 PetriNetUnfolderBase]: For 334706/334706 co-relation queries the response was YES. [2025-02-06 04:42:43,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80728 conditions, 7842 events. 4719/7842 cut-off events. For 334706/334706 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 49054 event pairs, 103 based on Foata normal form. 66/7908 useless extension candidates. Maximal degree in co-relation 80551. Up to 1431 conditions per place. [2025-02-06 04:42:43,314 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 368 selfloop transitions, 1250 changer transitions 3/1622 dead transitions. [2025-02-06 04:42:43,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1622 transitions, 38011 flow [2025-02-06 04:42:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-06 04:42:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2025-02-06 04:42:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 342 transitions. [2025-02-06 04:42:43,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.397212543554007 [2025-02-06 04:42:43,323 INFO L175 Difference]: Start difference. First operand has 326 places, 1287 transitions, 28051 flow. Second operand 41 states and 342 transitions. [2025-02-06 04:42:43,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1622 transitions, 38011 flow [2025-02-06 04:42:46,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1622 transitions, 36868 flow, removed 405 selfloop flow, removed 10 redundant places. [2025-02-06 04:42:46,297 INFO L231 Difference]: Finished difference. Result has 367 places, 1494 transitions, 35908 flow [2025-02-06 04:42:46,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=26959, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1044, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=35908, PETRI_PLACES=367, PETRI_TRANSITIONS=1494} [2025-02-06 04:42:46,298 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 344 predicate places. [2025-02-06 04:42:46,298 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 1494 transitions, 35908 flow [2025-02-06 04:42:46,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:46,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:46,299 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:46,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:46,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:46,499 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:46,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:46,500 INFO L85 PathProgramCache]: Analyzing trace with hash 45412932, now seen corresponding path program 10 times [2025-02-06 04:42:46,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:46,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183603637] [2025-02-06 04:42:46,500 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:46,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:46,503 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:46,505 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 04:42:46,505 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:42:46,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183603637] [2025-02-06 04:42:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183603637] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721595202] [2025-02-06 04:42:46,554 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:46,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:46,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:46,556 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:46,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 04:42:46,579 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:46,586 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-02-06 04:42:46,587 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:42:46,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:46,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:42:46,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:46,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:46,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721595202] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:46,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:46,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-06 04:42:46,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367001123] [2025-02-06 04:42:46,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:46,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 04:42:46,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:46,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 04:42:46,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:42:46,701 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:46,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 1494 transitions, 35908 flow. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:46,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:46,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:46,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:49,781 INFO L124 PetriNetUnfolderBase]: 5152/8596 cut-off events. [2025-02-06 04:42:49,781 INFO L125 PetriNetUnfolderBase]: For 428901/428901 co-relation queries the response was YES. [2025-02-06 04:42:49,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94817 conditions, 8596 events. 5152/8596 cut-off events. For 428901/428901 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 55434 event pairs, 790 based on Foata normal form. 94/8690 useless extension candidates. Maximal degree in co-relation 94091. Up to 4133 conditions per place. [2025-02-06 04:42:49,871 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 879 selfloop transitions, 893 changer transitions 3/1776 dead transitions. [2025-02-06 04:42:49,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1776 transitions, 45265 flow [2025-02-06 04:42:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 04:42:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-06 04:42:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 194 transitions. [2025-02-06 04:42:49,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2025-02-06 04:42:49,872 INFO L175 Difference]: Start difference. First operand has 367 places, 1494 transitions, 35908 flow. Second operand 20 states and 194 transitions. [2025-02-06 04:42:49,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1776 transitions, 45265 flow [2025-02-06 04:42:54,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 1776 transitions, 44760 flow, removed 158 selfloop flow, removed 14 redundant places. [2025-02-06 04:42:54,372 INFO L231 Difference]: Finished difference. Result has 386 places, 1613 transitions, 42194 flow [2025-02-06 04:42:54,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=35422, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=782, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=42194, PETRI_PLACES=386, PETRI_TRANSITIONS=1613} [2025-02-06 04:42:54,374 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 363 predicate places. [2025-02-06 04:42:54,374 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 1613 transitions, 42194 flow [2025-02-06 04:42:54,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:54,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:54,374 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:54,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 04:42:54,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 04:42:54,575 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:54,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1594071620, now seen corresponding path program 11 times [2025-02-06 04:42:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:54,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948785783] [2025-02-06 04:42:54,575 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:54,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:54,577 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:54,579 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:54,580 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:54,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:54,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:54,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948785783] [2025-02-06 04:42:54,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948785783] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:54,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:54,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:42:54,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775960419] [2025-02-06 04:42:54,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:54,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:42:54,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:54,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:42:54,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:42:54,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:54,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1613 transitions, 42194 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:54,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:54,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:54,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:58,152 INFO L124 PetriNetUnfolderBase]: 5395/8979 cut-off events. [2025-02-06 04:42:58,153 INFO L125 PetriNetUnfolderBase]: For 547631/547631 co-relation queries the response was YES. [2025-02-06 04:42:58,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106949 conditions, 8979 events. 5395/8979 cut-off events. For 547631/547631 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 57928 event pairs, 229 based on Foata normal form. 10/8989 useless extension candidates. Maximal degree in co-relation 106188. Up to 8090 conditions per place. [2025-02-06 04:42:58,282 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 1606 selfloop transitions, 129 changer transitions 7/1743 dead transitions. [2025-02-06 04:42:58,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 1743 transitions, 48847 flow [2025-02-06 04:42:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:42:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:42:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2025-02-06 04:42:58,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 04:42:58,283 INFO L175 Difference]: Start difference. First operand has 386 places, 1613 transitions, 42194 flow. Second operand 9 states and 84 transitions. [2025-02-06 04:42:58,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 1743 transitions, 48847 flow [2025-02-06 04:43:03,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 1743 transitions, 48136 flow, removed 329 selfloop flow, removed 1 redundant places. [2025-02-06 04:43:03,728 INFO L231 Difference]: Finished difference. Result has 396 places, 1661 transitions, 43451 flow [2025-02-06 04:43:03,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=41615, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43451, PETRI_PLACES=396, PETRI_TRANSITIONS=1661} [2025-02-06 04:43:03,730 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 373 predicate places. [2025-02-06 04:43:03,730 INFO L471 AbstractCegarLoop]: Abstraction has has 396 places, 1661 transitions, 43451 flow [2025-02-06 04:43:03,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:03,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:03,730 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:03,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 04:43:03,731 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:43:03,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:03,731 INFO L85 PathProgramCache]: Analyzing trace with hash 735050240, now seen corresponding path program 12 times [2025-02-06 04:43:03,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:03,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307954888] [2025-02-06 04:43:03,731 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:43:03,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:03,734 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:03,736 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:03,737 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:43:03,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:43:03,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:03,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307954888] [2025-02-06 04:43:03,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307954888] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:03,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284228652] [2025-02-06 04:43:03,806 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:43:03,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:03,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:03,808 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:43:03,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 04:43:03,834 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:03,842 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:03,842 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:43:03,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:03,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:43:03,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:43:03,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:43:03,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284228652] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:03,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:43:03,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2025-02-06 04:43:03,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853369891] [2025-02-06 04:43:03,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:03,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:43:03,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:03,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:43:03,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2025-02-06 04:43:03,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:43:03,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1661 transitions, 43451 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2025-02-06 04:43:03,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:03,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:43:03,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:07,388 INFO L124 PetriNetUnfolderBase]: 5482/9100 cut-off events. [2025-02-06 04:43:07,388 INFO L125 PetriNetUnfolderBase]: For 525083/525083 co-relation queries the response was YES. [2025-02-06 04:43:07,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106732 conditions, 9100 events. 5482/9100 cut-off events. For 525083/525083 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 58864 event pairs, 1711 based on Foata normal form. 6/9106 useless extension candidates. Maximal degree in co-relation 105967. Up to 8175 conditions per place. [2025-02-06 04:43:07,519 INFO L140 encePairwiseOnDemand]: 13/21 looper letters, 1598 selfloop transitions, 142 changer transitions 7/1748 dead transitions. [2025-02-06 04:43:07,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1748 transitions, 49102 flow [2025-02-06 04:43:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:43:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:43:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2025-02-06 04:43:07,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2025-02-06 04:43:07,520 INFO L175 Difference]: Start difference. First operand has 396 places, 1661 transitions, 43451 flow. Second operand 8 states and 79 transitions. [2025-02-06 04:43:07,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1748 transitions, 49102 flow [2025-02-06 04:43:13,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 1748 transitions, 49009 flow, removed 40 selfloop flow, removed 1 redundant places. [2025-02-06 04:43:13,181 INFO L231 Difference]: Finished difference. Result has 406 places, 1706 transitions, 44982 flow [2025-02-06 04:43:13,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=43325, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=44982, PETRI_PLACES=406, PETRI_TRANSITIONS=1706} [2025-02-06 04:43:13,183 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 383 predicate places. [2025-02-06 04:43:13,183 INFO L471 AbstractCegarLoop]: Abstraction has has 406 places, 1706 transitions, 44982 flow [2025-02-06 04:43:13,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2025-02-06 04:43:13,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:13,183 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:13,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 04:43:13,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 04:43:13,384 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:43:13,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1056216042, now seen corresponding path program 13 times [2025-02-06 04:43:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704227057] [2025-02-06 04:43:13,385 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:43:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:13,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:43:13,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:13,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:13,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:43:13,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:13,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704227057] [2025-02-06 04:43:13,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704227057] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:43:13,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:43:13,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:43:13,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618203417] [2025-02-06 04:43:13,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:13,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:43:13,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:13,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:43:13,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:43:13,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:43:13,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 1706 transitions, 44982 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:13,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:13,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:43:13,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:17,627 INFO L124 PetriNetUnfolderBase]: 5562/9237 cut-off events. [2025-02-06 04:43:17,628 INFO L125 PetriNetUnfolderBase]: For 535812/535812 co-relation queries the response was YES. [2025-02-06 04:43:17,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109565 conditions, 9237 events. 5562/9237 cut-off events. For 535812/535812 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 59634 event pairs, 254 based on Foata normal form. 6/9243 useless extension candidates. Maximal degree in co-relation 108795. Up to 8721 conditions per place. [2025-02-06 04:43:17,933 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 1685 selfloop transitions, 86 changer transitions 0/1772 dead transitions. [2025-02-06 04:43:17,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 1772 transitions, 50055 flow [2025-02-06 04:43:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:43:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:43:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2025-02-06 04:43:17,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2025-02-06 04:43:17,933 INFO L175 Difference]: Start difference. First operand has 406 places, 1706 transitions, 44982 flow. Second operand 9 states and 82 transitions. [2025-02-06 04:43:17,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 1772 transitions, 50055 flow [2025-02-06 04:43:23,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1772 transitions, 49959 flow, removed 23 selfloop flow, removed 2 redundant places. [2025-02-06 04:43:23,818 INFO L231 Difference]: Finished difference. Result has 415 places, 1725 transitions, 45768 flow [2025-02-06 04:43:23,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=44888, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=45768, PETRI_PLACES=415, PETRI_TRANSITIONS=1725} [2025-02-06 04:43:23,819 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 392 predicate places. [2025-02-06 04:43:23,819 INFO L471 AbstractCegarLoop]: Abstraction has has 415 places, 1725 transitions, 45768 flow [2025-02-06 04:43:23,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:23,819 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:23,819 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:23,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 04:43:23,820 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:43:23,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1544981572, now seen corresponding path program 14 times [2025-02-06 04:43:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:23,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936293482] [2025-02-06 04:43:23,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:43:23,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:23,823 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:23,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:23,829 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:43:23,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:43:23,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:23,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936293482] [2025-02-06 04:43:23,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936293482] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:23,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210807918] [2025-02-06 04:43:23,885 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:43:23,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:23,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:23,888 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:43:23,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 04:43:23,914 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:23,922 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:23,922 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:43:23,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:23,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:43:23,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:43:23,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:43:24,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210807918] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:43:24,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:43:24,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2025-02-06 04:43:24,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381949132] [2025-02-06 04:43:24,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:43:24,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 04:43:24,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:24,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 04:43:24,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2025-02-06 04:43:24,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:43:24,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 1725 transitions, 45768 flow. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:24,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:24,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:43:24,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:28,518 INFO L124 PetriNetUnfolderBase]: 6327/10513 cut-off events. [2025-02-06 04:43:28,518 INFO L125 PetriNetUnfolderBase]: For 685719/685719 co-relation queries the response was YES. [2025-02-06 04:43:28,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128373 conditions, 10513 events. 6327/10513 cut-off events. For 685719/685719 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 69920 event pairs, 892 based on Foata normal form. 67/10580 useless extension candidates. Maximal degree in co-relation 127599. Up to 4561 conditions per place. [2025-02-06 04:43:28,657 INFO L140 encePairwiseOnDemand]: 11/21 looper letters, 943 selfloop transitions, 1092 changer transitions 3/2039 dead transitions. [2025-02-06 04:43:28,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 2039 transitions, 57755 flow [2025-02-06 04:43:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 04:43:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 04:43:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 185 transitions. [2025-02-06 04:43:28,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41950113378684806 [2025-02-06 04:43:28,658 INFO L175 Difference]: Start difference. First operand has 415 places, 1725 transitions, 45768 flow. Second operand 21 states and 185 transitions. [2025-02-06 04:43:28,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 2039 transitions, 57755 flow [2025-02-06 04:43:35,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 2039 transitions, 57623 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-02-06 04:43:35,312 INFO L231 Difference]: Finished difference. Result has 443 places, 1888 transitions, 54972 flow [2025-02-06 04:43:35,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=45668, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=945, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=54972, PETRI_PLACES=443, PETRI_TRANSITIONS=1888} [2025-02-06 04:43:35,313 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 420 predicate places. [2025-02-06 04:43:35,314 INFO L471 AbstractCegarLoop]: Abstraction has has 443 places, 1888 transitions, 54972 flow [2025-02-06 04:43:35,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:35,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:35,314 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:35,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 04:43:35,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:35,515 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:43:35,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:35,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2086807830, now seen corresponding path program 15 times [2025-02-06 04:43:35,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:35,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610798395] [2025-02-06 04:43:35,516 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:43:35,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:35,518 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-02-06 04:43:35,521 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:43:35,521 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 04:43:35,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:43:35,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:35,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610798395] [2025-02-06 04:43:35,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610798395] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:35,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128935265] [2025-02-06 04:43:35,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:43:35,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:35,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:35,644 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:43:35,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 04:43:35,669 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-02-06 04:43:35,677 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:43:35,677 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 04:43:35,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:35,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:43:35,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:43:35,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:43:35,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128935265] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:43:35,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:43:35,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 6] total 16 [2025-02-06 04:43:35,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193700913] [2025-02-06 04:43:35,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:43:35,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 04:43:35,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:35,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 04:43:35,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2025-02-06 04:43:36,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:43:36,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 1888 transitions, 54972 flow. Second operand has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:36,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:36,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:43:36,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:46,916 INFO L124 PetriNetUnfolderBase]: 13385/22125 cut-off events. [2025-02-06 04:43:46,916 INFO L125 PetriNetUnfolderBase]: For 1721106/1721106 co-relation queries the response was YES. [2025-02-06 04:43:47,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287796 conditions, 22125 events. 13385/22125 cut-off events. For 1721106/1721106 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 162339 event pairs, 400 based on Foata normal form. 1/22126 useless extension candidates. Maximal degree in co-relation 286259. Up to 6348 conditions per place. [2025-02-06 04:43:47,438 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 2018 selfloop transitions, 2117 changer transitions 393/4529 dead transitions. [2025-02-06 04:43:47,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 4529 transitions, 138614 flow [2025-02-06 04:43:47,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 04:43:47,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-06 04:43:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 224 transitions. [2025-02-06 04:43:47,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-06 04:43:47,439 INFO L175 Difference]: Start difference. First operand has 443 places, 1888 transitions, 54972 flow. Second operand 20 states and 224 transitions. [2025-02-06 04:43:47,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 4529 transitions, 138614 flow