./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.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-alt.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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:42:12,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:42:13,016 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:42:13,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:42:13,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:42:13,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:42:13,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:42:13,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:42:13,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:42:13,044 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:42:13,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:42:13,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:42:13,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:42:13,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:42:13,045 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:42:13,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:42:13,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:42:13,046 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:42:13,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:42:13,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:42:13,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:42:13,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:42:13,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:42:13,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:42:13,047 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:42:13,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:42:13,047 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:42:13,047 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:42:13,047 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:42:13,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:42:13,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:42:13,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:42:13,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:42:13,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:42:13,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:42:13,048 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:42:13,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:42:13,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:42:13,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:42:13,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:42:13,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:42:13,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:42:13,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:42:13,048 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 -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2025-02-06 04:42:13,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:42:13,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:42:13,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:42:13,265 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:42:13,265 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:42:13,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2025-02-06 04:42:14,424 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8c82c78f4/e1ce7d03415f416b95f606f1c36c8fee/FLAG340809509 [2025-02-06 04:42:14,698 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:42:14,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2025-02-06 04:42:14,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8c82c78f4/e1ce7d03415f416b95f606f1c36c8fee/FLAG340809509 [2025-02-06 04:42:15,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8c82c78f4/e1ce7d03415f416b95f606f1c36c8fee [2025-02-06 04:42:15,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:42:15,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:42:15,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:42:15,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:42:15,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:42:15,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f6d911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15, skipping insertion in model container [2025-02-06 04:42:15,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,021 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:42:15,142 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-alt.wvr.c[2124,2137] [2025-02-06 04:42:15,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:42:15,153 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:42:15,166 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-alt.wvr.c[2124,2137] [2025-02-06 04:42:15,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:42:15,181 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:42:15,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15 WrapperNode [2025-02-06 04:42:15,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:42:15,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:42:15,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:42:15,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:42:15,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,204 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2025-02-06 04:42:15,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:42:15,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:42:15,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:42:15,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:42:15,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,224 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 04:42:15,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,227 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:42:15,232 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:42:15,232 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:42:15,232 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:42:15,232 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (1/1) ... [2025-02-06 04:42:15,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:42:15,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:15,261 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 04:42:15,273 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 04:42:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:42:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:42:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:42:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:42:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:42:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:42:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:42:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:42:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:42:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:42:15,288 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 04:42:15,339 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:42:15,341 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:42:15,440 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:42:15,441 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:42:15,524 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:42:15,524 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:42:15,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:42:15 BoogieIcfgContainer [2025-02-06 04:42:15,525 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:42:15,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:42:15,527 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:42:15,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:42:15,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:42:15" (1/3) ... [2025-02-06 04:42:15,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30608046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:42:15, skipping insertion in model container [2025-02-06 04:42:15,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:42:15" (2/3) ... [2025-02-06 04:42:15,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30608046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:42:15, skipping insertion in model container [2025-02-06 04:42:15,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:42:15" (3/3) ... [2025-02-06 04:42:15,533 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2025-02-06 04:42:15,545 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:42:15,546 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr-alt.wvr.c that has 3 procedures, 20 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-06 04:42:15,546 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:42:15,586 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 04:42:15,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 21 transitions, 56 flow [2025-02-06 04:42:15,638 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2025-02-06 04:42:15,639 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:42:15,641 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 4. Compared 24 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 04:42:15,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 21 transitions, 56 flow [2025-02-06 04:42:15,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 18 transitions, 48 flow [2025-02-06 04:42:15,656 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:42:15,665 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;@fc04604, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:42:15,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:42:15,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:42:15,678 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-02-06 04:42:15,678 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:42:15,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:15,679 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:15,682 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 04:42:15,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2073263937, now seen corresponding path program 1 times [2025-02-06 04:42:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:15,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621388468] [2025-02-06 04:42:15,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:15,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:15,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 04:42:15,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:42:15,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:15,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:15,914 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 04:42:15,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:15,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621388468] [2025-02-06 04:42:15,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621388468] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:15,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:15,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:42:15,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723889807] [2025-02-06 04:42:15,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:15,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:42:15,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:15,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:42:15,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:42:15,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:15,953 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 04:42:15,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:15,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:15,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:16,020 INFO L124 PetriNetUnfolderBase]: 70/140 cut-off events. [2025-02-06 04:42:16,021 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 04:42:16,021 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 437 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 04:42:16,023 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 20 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2025-02-06 04:42:16,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 113 flow [2025-02-06 04:42:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:42:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:42:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2025-02-06 04:42:16,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-02-06 04:42:16,034 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 48 flow. Second operand 4 states and 44 transitions. [2025-02-06 04:42:16,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 113 flow [2025-02-06 04:42:16,037 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 04:42:16,038 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2025-02-06 04:42:16,040 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 04:42:16,042 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2025-02-06 04:42:16,042 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2025-02-06 04:42:16,042 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 04:42:16,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:16,043 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:16,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:42:16,043 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 04:42:16,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash -246956766, now seen corresponding path program 1 times [2025-02-06 04:42:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:16,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151375268] [2025-02-06 04:42:16,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:16,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:42:16,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:42:16,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:16,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:16,162 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 04:42:16,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:16,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151375268] [2025-02-06 04:42:16,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151375268] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:16,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:16,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:42:16,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503699932] [2025-02-06 04:42:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:16,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:42:16,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:16,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:42:16,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:42:16,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:16,168 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 04:42:16,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:16,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:16,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:16,238 INFO L124 PetriNetUnfolderBase]: 89/184 cut-off events. [2025-02-06 04:42:16,241 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2025-02-06 04:42:16,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 184 events. 89/184 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 625 event pairs, 49 based on Foata normal form. 13/196 useless extension candidates. Maximal degree in co-relation 87. Up to 124 conditions per place. [2025-02-06 04:42:16,243 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2025-02-06 04:42:16,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 129 flow [2025-02-06 04:42:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:42:16,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:42:16,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2025-02-06 04:42:16,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2025-02-06 04:42:16,249 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 43 transitions. [2025-02-06 04:42:16,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 129 flow [2025-02-06 04:42:16,249 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 04:42:16,250 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2025-02-06 04:42:16,250 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 04:42:16,250 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2025-02-06 04:42:16,250 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2025-02-06 04:42:16,251 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 04:42:16,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:16,251 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 04:42:16,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:42:16,251 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 04:42:16,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:16,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1941528830, now seen corresponding path program 1 times [2025-02-06 04:42:16,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:16,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357219565] [2025-02-06 04:42:16,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:16,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:16,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:42:16,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:16,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:16,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:16,575 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 04:42:16,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:16,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357219565] [2025-02-06 04:42:16,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357219565] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:16,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496836133] [2025-02-06 04:42:16,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:42:16,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:16,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:16,581 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 04:42:16,582 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 04:42:16,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:42:16,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:16,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:16,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:16,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 04:42:16,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:16,922 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 04:42:16,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:17,308 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 04:42:17,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496836133] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:17,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:17,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-02-06 04:42:17,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116039509] [2025-02-06 04:42:17,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:17,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 04:42:17,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:17,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 04:42:17,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2025-02-06 04:42:17,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:17,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 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 04:42:17,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:17,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:17,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:18,081 INFO L124 PetriNetUnfolderBase]: 396/689 cut-off events. [2025-02-06 04:42:18,081 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2025-02-06 04:42:18,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 689 events. 396/689 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2892 event pairs, 26 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 632. Up to 195 conditions per place. [2025-02-06 04:42:18,085 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 89 selfloop transitions, 64 changer transitions 13/167 dead transitions. [2025-02-06 04:42:18,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 167 transitions, 833 flow [2025-02-06 04:42:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-06 04:42:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-02-06 04:42:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 244 transitions. [2025-02-06 04:42:18,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2025-02-06 04:42:18,087 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 28 states and 244 transitions. [2025-02-06 04:42:18,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 167 transitions, 833 flow [2025-02-06 04:42:18,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 167 transitions, 815 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:42:18,090 INFO L231 Difference]: Finished difference. Result has 68 places, 90 transitions, 567 flow [2025-02-06 04:42:18,090 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=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=567, PETRI_PLACES=68, PETRI_TRANSITIONS=90} [2025-02-06 04:42:18,090 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 45 predicate places. [2025-02-06 04:42:18,091 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 90 transitions, 567 flow [2025-02-06 04:42:18,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 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 04:42:18,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:18,091 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 04:42:18,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:42:18,295 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 04:42:18,295 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 04:42:18,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash 83652846, now seen corresponding path program 2 times [2025-02-06 04:42:18,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:18,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013831087] [2025-02-06 04:42:18,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:18,304 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:18,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:18,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:18,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:18,531 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 04:42:18,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013831087] [2025-02-06 04:42:18,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013831087] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754608401] [2025-02-06 04:42:18,531 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:18,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:18,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:18,536 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 04:42:18,539 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 04:42:18,564 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:18,575 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:18,576 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:18,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:18,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 04:42:18,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:18,759 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 04:42:18,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:19,172 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 04:42:19,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754608401] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:19,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:19,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 04:42:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652833219] [2025-02-06 04:42:19,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:19,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:42:19,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:19,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:42:19,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:42:19,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:19,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 90 transitions, 567 flow. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 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 04:42:19,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:19,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:19,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:20,032 INFO L124 PetriNetUnfolderBase]: 579/1036 cut-off events. [2025-02-06 04:42:20,033 INFO L125 PetriNetUnfolderBase]: For 2841/2841 co-relation queries the response was YES. [2025-02-06 04:42:20,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4341 conditions, 1036 events. 579/1036 cut-off events. For 2841/2841 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4919 event pairs, 17 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 4284. Up to 219 conditions per place. [2025-02-06 04:42:20,041 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 114 selfloop transitions, 109 changer transitions 29/253 dead transitions. [2025-02-06 04:42:20,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 253 transitions, 2066 flow [2025-02-06 04:42:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 04:42:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-02-06 04:42:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 275 transitions. [2025-02-06 04:42:20,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40922619047619047 [2025-02-06 04:42:20,047 INFO L175 Difference]: Start difference. First operand has 68 places, 90 transitions, 567 flow. Second operand 32 states and 275 transitions. [2025-02-06 04:42:20,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 253 transitions, 2066 flow [2025-02-06 04:42:20,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 253 transitions, 2035 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-06 04:42:20,071 INFO L231 Difference]: Finished difference. Result has 106 places, 149 transitions, 1311 flow [2025-02-06 04:42:20,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1311, PETRI_PLACES=106, PETRI_TRANSITIONS=149} [2025-02-06 04:42:20,072 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 83 predicate places. [2025-02-06 04:42:20,073 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 149 transitions, 1311 flow [2025-02-06 04:42:20,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 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 04:42:20,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:20,073 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 04:42:20,079 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 04:42:20,273 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 04:42:20,274 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 04:42:20,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1610253440, now seen corresponding path program 3 times [2025-02-06 04:42:20,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:20,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168867830] [2025-02-06 04:42:20,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:20,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:20,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:20,286 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:20,287 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:20,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:20,447 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 04:42:20,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:20,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168867830] [2025-02-06 04:42:20,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168867830] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:20,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679577243] [2025-02-06 04:42:20,450 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:20,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:20,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:20,456 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 04:42:20,457 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 04:42:20,482 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:20,491 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:20,491 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:20,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:20,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 04:42:20,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:20,679 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 04:42:20,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:20,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679577243] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:20,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:20,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 04:42:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463523260] [2025-02-06 04:42:20,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:20,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:42:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:20,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:42:20,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:42:20,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:20,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 149 transitions, 1311 flow. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 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 04:42:20,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:20,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:20,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:22,065 INFO L124 PetriNetUnfolderBase]: 685/1235 cut-off events. [2025-02-06 04:42:22,066 INFO L125 PetriNetUnfolderBase]: For 6753/6753 co-relation queries the response was YES. [2025-02-06 04:42:22,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6481 conditions, 1235 events. 685/1235 cut-off events. For 6753/6753 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6243 event pairs, 17 based on Foata normal form. 16/1251 useless extension candidates. Maximal degree in co-relation 6396. Up to 268 conditions per place. [2025-02-06 04:42:22,074 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 130 selfloop transitions, 144 changer transitions 27/302 dead transitions. [2025-02-06 04:42:22,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 302 transitions, 3091 flow [2025-02-06 04:42:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-06 04:42:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2025-02-06 04:42:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 340 transitions. [2025-02-06 04:42:22,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3948896631823461 [2025-02-06 04:42:22,077 INFO L175 Difference]: Start difference. First operand has 106 places, 149 transitions, 1311 flow. Second operand 41 states and 340 transitions. [2025-02-06 04:42:22,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 302 transitions, 3091 flow [2025-02-06 04:42:22,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 302 transitions, 2752 flow, removed 130 selfloop flow, removed 12 redundant places. [2025-02-06 04:42:22,107 INFO L231 Difference]: Finished difference. Result has 148 places, 185 transitions, 1957 flow [2025-02-06 04:42:22,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1957, PETRI_PLACES=148, PETRI_TRANSITIONS=185} [2025-02-06 04:42:22,108 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 125 predicate places. [2025-02-06 04:42:22,108 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 185 transitions, 1957 flow [2025-02-06 04:42:22,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 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 04:42:22,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:22,108 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 04:42:22,116 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 04:42:22,309 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 04:42:22,309 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 04:42:22,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:22,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1860395712, now seen corresponding path program 4 times [2025-02-06 04:42:22,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:22,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910433993] [2025-02-06 04:42:22,310 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:22,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:22,313 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:22,317 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:22,317 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:22,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:22,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:22,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910433993] [2025-02-06 04:42:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910433993] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:22,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219645031] [2025-02-06 04:42:22,473 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:22,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:22,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:22,478 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 04:42:22,479 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 04:42:22,503 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:22,515 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:22,515 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:22,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:22,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:42:22,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:22,698 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 04:42:22,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:23,018 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 04:42:23,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219645031] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:23,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:23,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 27 [2025-02-06 04:42:23,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587785921] [2025-02-06 04:42:23,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:23,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 04:42:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:23,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 04:42:23,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2025-02-06 04:42:23,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:23,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 185 transitions, 1957 flow. Second operand has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 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 04:42:23,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:23,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:23,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:25,168 INFO L124 PetriNetUnfolderBase]: 1036/1841 cut-off events. [2025-02-06 04:42:25,168 INFO L125 PetriNetUnfolderBase]: For 17595/17595 co-relation queries the response was YES. [2025-02-06 04:42:25,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11131 conditions, 1841 events. 1036/1841 cut-off events. For 17595/17595 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9721 event pairs, 6 based on Foata normal form. 22/1863 useless extension candidates. Maximal degree in co-relation 11028. Up to 415 conditions per place. [2025-02-06 04:42:25,181 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 211 selfloop transitions, 302 changer transitions 22/536 dead transitions. [2025-02-06 04:42:25,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 536 transitions, 6611 flow [2025-02-06 04:42:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-02-06 04:42:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2025-02-06 04:42:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 581 transitions. [2025-02-06 04:42:25,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2025-02-06 04:42:25,184 INFO L175 Difference]: Start difference. First operand has 148 places, 185 transitions, 1957 flow. Second operand 70 states and 581 transitions. [2025-02-06 04:42:25,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 536 transitions, 6611 flow [2025-02-06 04:42:25,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 536 transitions, 6121 flow, removed 151 selfloop flow, removed 21 redundant places. [2025-02-06 04:42:25,250 INFO L231 Difference]: Finished difference. Result has 218 places, 363 transitions, 4978 flow [2025-02-06 04:42:25,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=4978, PETRI_PLACES=218, PETRI_TRANSITIONS=363} [2025-02-06 04:42:25,250 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 195 predicate places. [2025-02-06 04:42:25,250 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 363 transitions, 4978 flow [2025-02-06 04:42:25,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 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 04:42:25,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:25,251 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 04:42:25,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:42:25,451 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 04:42:25,452 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 04:42:25,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:25,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1423069888, now seen corresponding path program 5 times [2025-02-06 04:42:25,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:25,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010143801] [2025-02-06 04:42:25,453 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:25,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:25,456 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:42:25,461 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:25,461 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:42:25,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:25,663 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 04:42:25,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010143801] [2025-02-06 04:42:25,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010143801] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:25,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:25,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:42:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32597115] [2025-02-06 04:42:25,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:25,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:42:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:25,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:42:25,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:42:25,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:25,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 363 transitions, 4978 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:25,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:25,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:25,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:26,016 INFO L124 PetriNetUnfolderBase]: 878/1661 cut-off events. [2025-02-06 04:42:26,016 INFO L125 PetriNetUnfolderBase]: For 33220/33242 co-relation queries the response was YES. [2025-02-06 04:42:26,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12317 conditions, 1661 events. 878/1661 cut-off events. For 33220/33242 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9300 event pairs, 40 based on Foata normal form. 3/1649 useless extension candidates. Maximal degree in co-relation 12160. Up to 1122 conditions per place. [2025-02-06 04:42:26,030 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 244 selfloop transitions, 36 changer transitions 6/394 dead transitions. [2025-02-06 04:42:26,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 394 transitions, 5889 flow [2025-02-06 04:42:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:42:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:42:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2025-02-06 04:42:26,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2025-02-06 04:42:26,032 INFO L175 Difference]: Start difference. First operand has 218 places, 363 transitions, 4978 flow. Second operand 10 states and 102 transitions. [2025-02-06 04:42:26,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 394 transitions, 5889 flow [2025-02-06 04:42:26,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 394 transitions, 5040 flow, removed 327 selfloop flow, removed 14 redundant places. [2025-02-06 04:42:26,158 INFO L231 Difference]: Finished difference. Result has 210 places, 373 transitions, 4410 flow [2025-02-06 04:42:26,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=4136, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4410, PETRI_PLACES=210, PETRI_TRANSITIONS=373} [2025-02-06 04:42:26,159 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 187 predicate places. [2025-02-06 04:42:26,159 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 373 transitions, 4410 flow [2025-02-06 04:42:26,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:26,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:26,160 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 04:42:26,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:42:26,160 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 04:42:26,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash 279813022, now seen corresponding path program 6 times [2025-02-06 04:42:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:26,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265497482] [2025-02-06 04:42:26,161 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:26,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:26,164 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:42:26,167 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:26,167 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:42:26,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:26,306 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 04:42:26,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:26,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265497482] [2025-02-06 04:42:26,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265497482] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:26,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:26,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:42:26,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974289832] [2025-02-06 04:42:26,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:26,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:42:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:26,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:42:26,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:42:26,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:26,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 373 transitions, 4410 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:26,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:26,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:26,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:26,599 INFO L124 PetriNetUnfolderBase]: 879/1661 cut-off events. [2025-02-06 04:42:26,599 INFO L125 PetriNetUnfolderBase]: For 28326/28356 co-relation queries the response was YES. [2025-02-06 04:42:26,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11138 conditions, 1661 events. 879/1661 cut-off events. For 28326/28356 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9268 event pairs, 43 based on Foata normal form. 3/1647 useless extension candidates. Maximal degree in co-relation 11006. Up to 1163 conditions per place. [2025-02-06 04:42:26,612 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 261 selfloop transitions, 21 changer transitions 4/394 dead transitions. [2025-02-06 04:42:26,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 394 transitions, 5208 flow [2025-02-06 04:42:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:42:26,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:42:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2025-02-06 04:42:26,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2025-02-06 04:42:26,614 INFO L175 Difference]: Start difference. First operand has 210 places, 373 transitions, 4410 flow. Second operand 10 states and 97 transitions. [2025-02-06 04:42:26,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 394 transitions, 5208 flow [2025-02-06 04:42:26,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 394 transitions, 5037 flow, removed 60 selfloop flow, removed 7 redundant places. [2025-02-06 04:42:26,708 INFO L231 Difference]: Finished difference. Result has 213 places, 375 transitions, 4364 flow [2025-02-06 04:42:26,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=4283, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4364, PETRI_PLACES=213, PETRI_TRANSITIONS=375} [2025-02-06 04:42:26,709 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 190 predicate places. [2025-02-06 04:42:26,710 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 375 transitions, 4364 flow [2025-02-06 04:42:26,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:26,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:26,710 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 04:42:26,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:42:26,710 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 04:42:26,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1998156728, now seen corresponding path program 7 times [2025-02-06 04:42:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:26,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037533812] [2025-02-06 04:42:26,710 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:26,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:26,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:42:26,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:26,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:26,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:26,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037533812] [2025-02-06 04:42:26,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037533812] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:26,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:26,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:42:26,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645237060] [2025-02-06 04:42:26,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:26,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:42:26,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:26,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:42:26,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:42:26,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:26,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 375 transitions, 4364 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:26,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:26,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:26,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:27,205 INFO L124 PetriNetUnfolderBase]: 891/1694 cut-off events. [2025-02-06 04:42:27,206 INFO L125 PetriNetUnfolderBase]: For 27162/27186 co-relation queries the response was YES. [2025-02-06 04:42:27,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11275 conditions, 1694 events. 891/1694 cut-off events. For 27162/27186 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9605 event pairs, 45 based on Foata normal form. 3/1684 useless extension candidates. Maximal degree in co-relation 11134. Up to 1149 conditions per place. [2025-02-06 04:42:27,219 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 257 selfloop transitions, 36 changer transitions 4/405 dead transitions. [2025-02-06 04:42:27,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 405 transitions, 5276 flow [2025-02-06 04:42:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:42:27,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:42:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2025-02-06 04:42:27,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2025-02-06 04:42:27,220 INFO L175 Difference]: Start difference. First operand has 213 places, 375 transitions, 4364 flow. Second operand 11 states and 111 transitions. [2025-02-06 04:42:27,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 405 transitions, 5276 flow [2025-02-06 04:42:27,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 405 transitions, 5234 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-06 04:42:27,323 INFO L231 Difference]: Finished difference. Result has 219 places, 380 transitions, 4552 flow [2025-02-06 04:42:27,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4552, PETRI_PLACES=219, PETRI_TRANSITIONS=380} [2025-02-06 04:42:27,324 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 196 predicate places. [2025-02-06 04:42:27,324 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 380 transitions, 4552 flow [2025-02-06 04:42:27,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:27,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:27,324 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 04:42:27,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:42:27,325 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 04:42:27,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:27,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1865884688, now seen corresponding path program 8 times [2025-02-06 04:42:27,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:27,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051572493] [2025-02-06 04:42:27,325 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:27,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:27,328 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:42:27,330 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:27,330 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:42:27,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:27,463 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 04:42:27,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051572493] [2025-02-06 04:42:27,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051572493] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:27,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:27,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:42:27,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457607455] [2025-02-06 04:42:27,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:27,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:42:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:27,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:42:27,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:42:27,481 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:27,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 380 transitions, 4552 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:27,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:27,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:27,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:27,757 INFO L124 PetriNetUnfolderBase]: 890/1689 cut-off events. [2025-02-06 04:42:27,757 INFO L125 PetriNetUnfolderBase]: For 29278/29304 co-relation queries the response was YES. [2025-02-06 04:42:27,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11438 conditions, 1689 events. 890/1689 cut-off events. For 29278/29304 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9521 event pairs, 45 based on Foata normal form. 3/1679 useless extension candidates. Maximal degree in co-relation 11302. Up to 1149 conditions per place. [2025-02-06 04:42:27,773 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 252 selfloop transitions, 34 changer transitions 7/401 dead transitions. [2025-02-06 04:42:27,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 401 transitions, 5368 flow [2025-02-06 04:42:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:42:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:42:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2025-02-06 04:42:27,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-02-06 04:42:27,774 INFO L175 Difference]: Start difference. First operand has 219 places, 380 transitions, 4552 flow. Second operand 10 states and 100 transitions. [2025-02-06 04:42:27,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 401 transitions, 5368 flow [2025-02-06 04:42:27,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 401 transitions, 5236 flow, removed 51 selfloop flow, removed 7 redundant places. [2025-02-06 04:42:27,900 INFO L231 Difference]: Finished difference. Result has 223 places, 380 transitions, 4552 flow [2025-02-06 04:42:27,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=4458, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4552, PETRI_PLACES=223, PETRI_TRANSITIONS=380} [2025-02-06 04:42:27,901 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 200 predicate places. [2025-02-06 04:42:27,902 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 380 transitions, 4552 flow [2025-02-06 04:42:27,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:27,902 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:27,902 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 04:42:27,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:42:27,902 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 04:42:27,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash 323302044, now seen corresponding path program 9 times [2025-02-06 04:42:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:27,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31165552] [2025-02-06 04:42:27,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:27,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:27,906 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:27,909 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:27,909 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:27,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:27,951 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 04:42:27,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:27,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31165552] [2025-02-06 04:42:27,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31165552] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:27,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442612588] [2025-02-06 04:42:27,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:27,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:27,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:27,954 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 04:42:27,955 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 04:42:27,983 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:27,992 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:27,992 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:27,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:27,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 04:42:27,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:28,047 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 04:42:28,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:28,123 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 04:42:28,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442612588] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:28,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:28,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 04:42:28,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980733707] [2025-02-06 04:42:28,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:28,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:42:28,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:28,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:42:28,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:42:28,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 21 [2025-02-06 04:42:28,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 380 transitions, 4552 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:28,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:28,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 21 [2025-02-06 04:42:28,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:28,384 INFO L124 PetriNetUnfolderBase]: 1056/1902 cut-off events. [2025-02-06 04:42:28,384 INFO L125 PetriNetUnfolderBase]: For 32126/32170 co-relation queries the response was YES. [2025-02-06 04:42:28,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12754 conditions, 1902 events. 1056/1902 cut-off events. For 32126/32170 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10354 event pairs, 29 based on Foata normal form. 36/1927 useless extension candidates. Maximal degree in co-relation 12641. Up to 903 conditions per place. [2025-02-06 04:42:28,400 INFO L140 encePairwiseOnDemand]: 15/21 looper letters, 228 selfloop transitions, 165 changer transitions 1/441 dead transitions. [2025-02-06 04:42:28,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 441 transitions, 6144 flow [2025-02-06 04:42:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:42:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:42:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2025-02-06 04:42:28,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2025-02-06 04:42:28,402 INFO L175 Difference]: Start difference. First operand has 223 places, 380 transitions, 4552 flow. Second operand 6 states and 64 transitions. [2025-02-06 04:42:28,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 441 transitions, 6144 flow [2025-02-06 04:42:28,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 441 transitions, 6054 flow, removed 11 selfloop flow, removed 11 redundant places. [2025-02-06 04:42:28,579 INFO L231 Difference]: Finished difference. Result has 212 places, 401 transitions, 5474 flow [2025-02-06 04:42:28,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5474, PETRI_PLACES=212, PETRI_TRANSITIONS=401} [2025-02-06 04:42:28,579 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 189 predicate places. [2025-02-06 04:42:28,580 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 401 transitions, 5474 flow [2025-02-06 04:42:28,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:28,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:28,580 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 04:42:28,586 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 04:42:28,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 04:42:28,784 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 04:42:28,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1857833524, now seen corresponding path program 10 times [2025-02-06 04:42:28,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:28,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040325279] [2025-02-06 04:42:28,784 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:28,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:28,788 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:28,790 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:28,790 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:28,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:28,914 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 04:42:28,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040325279] [2025-02-06 04:42:28,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040325279] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342967250] [2025-02-06 04:42:28,914 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:28,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:28,917 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 04:42:28,921 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 04:42:28,942 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:28,950 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:28,950 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:28,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:28,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 04:42:28,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:29,140 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 04:42:29,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:29,423 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 04:42:29,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342967250] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:29,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:29,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 26 [2025-02-06 04:42:29,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944708675] [2025-02-06 04:42:29,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:29,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-06 04:42:29,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:29,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-06 04:42:29,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2025-02-06 04:42:29,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:29,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 401 transitions, 5474 flow. Second operand has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 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 04:42:29,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:29,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:29,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:30,325 INFO L124 PetriNetUnfolderBase]: 1269/2218 cut-off events. [2025-02-06 04:42:30,326 INFO L125 PetriNetUnfolderBase]: For 34248/34248 co-relation queries the response was YES. [2025-02-06 04:42:30,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15714 conditions, 2218 events. 1269/2218 cut-off events. For 34248/34248 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11969 event pairs, 10 based on Foata normal form. 3/2221 useless extension candidates. Maximal degree in co-relation 15528. Up to 911 conditions per place. [2025-02-06 04:42:30,343 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 172 selfloop transitions, 352 changer transitions 21/546 dead transitions. [2025-02-06 04:42:30,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 546 transitions, 8248 flow [2025-02-06 04:42:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 04:42:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 04:42:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 192 transitions. [2025-02-06 04:42:30,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39751552795031053 [2025-02-06 04:42:30,347 INFO L175 Difference]: Start difference. First operand has 212 places, 401 transitions, 5474 flow. Second operand 23 states and 192 transitions. [2025-02-06 04:42:30,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 546 transitions, 8248 flow [2025-02-06 04:42:30,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 546 transitions, 8134 flow, removed 57 selfloop flow, removed 0 redundant places. [2025-02-06 04:42:30,524 INFO L231 Difference]: Finished difference. Result has 246 places, 483 transitions, 7939 flow [2025-02-06 04:42:30,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=5424, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7939, PETRI_PLACES=246, PETRI_TRANSITIONS=483} [2025-02-06 04:42:30,526 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 223 predicate places. [2025-02-06 04:42:30,526 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 483 transitions, 7939 flow [2025-02-06 04:42:30,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 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 04:42:30,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:30,527 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 04:42:30,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 04:42:30,731 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,SelfDestructingSolverStorable11 [2025-02-06 04:42:30,731 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 04:42:30,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:30,732 INFO L85 PathProgramCache]: Analyzing trace with hash -867281600, now seen corresponding path program 11 times [2025-02-06 04:42:30,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:30,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959394161] [2025-02-06 04:42:30,732 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:30,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:30,735 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:30,737 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:30,737 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:30,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:30,859 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 04:42:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:30,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959394161] [2025-02-06 04:42:30,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959394161] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:30,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849682817] [2025-02-06 04:42:30,860 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:30,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:30,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:30,863 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 04:42:30,866 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 04:42:30,891 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:42:30,898 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:30,899 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:30,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:30,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:42:30,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:31,080 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 04:42:31,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:31,361 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 04:42:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849682817] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:31,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:31,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2025-02-06 04:42:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845007457] [2025-02-06 04:42:31,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:31,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 04:42:31,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:31,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 04:42:31,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2025-02-06 04:42:31,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:31,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 483 transitions, 7939 flow. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 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 04:42:31,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:31,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:31,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:32,554 INFO L124 PetriNetUnfolderBase]: 1402/2447 cut-off events. [2025-02-06 04:42:32,554 INFO L125 PetriNetUnfolderBase]: For 38655/38655 co-relation queries the response was YES. [2025-02-06 04:42:32,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19363 conditions, 2447 events. 1402/2447 cut-off events. For 38655/38655 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13526 event pairs, 13 based on Foata normal form. 3/2450 useless extension candidates. Maximal degree in co-relation 19228. Up to 1073 conditions per place. [2025-02-06 04:42:32,574 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 252 selfloop transitions, 387 changer transitions 12/652 dead transitions. [2025-02-06 04:42:32,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 652 transitions, 11377 flow [2025-02-06 04:42:32,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 04:42:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-06 04:42:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 283 transitions. [2025-02-06 04:42:32,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3963585434173669 [2025-02-06 04:42:32,576 INFO L175 Difference]: Start difference. First operand has 246 places, 483 transitions, 7939 flow. Second operand 34 states and 283 transitions. [2025-02-06 04:42:32,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 652 transitions, 11377 flow [2025-02-06 04:42:32,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 652 transitions, 10896 flow, removed 215 selfloop flow, removed 7 redundant places. [2025-02-06 04:42:32,859 INFO L231 Difference]: Finished difference. Result has 283 places, 583 transitions, 10579 flow [2025-02-06 04:42:32,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=7671, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=10579, PETRI_PLACES=283, PETRI_TRANSITIONS=583} [2025-02-06 04:42:32,860 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 260 predicate places. [2025-02-06 04:42:32,860 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 583 transitions, 10579 flow [2025-02-06 04:42:32,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 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 04:42:32,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:32,860 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 04:42:32,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 04:42:33,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:33,061 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 04:42:33,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:33,062 INFO L85 PathProgramCache]: Analyzing trace with hash 835601310, now seen corresponding path program 12 times [2025-02-06 04:42:33,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:33,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673656114] [2025-02-06 04:42:33,062 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:33,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:33,064 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:42:33,066 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:42:33,066 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:42:33,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:33,205 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 04:42:33,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673656114] [2025-02-06 04:42:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673656114] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:33,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:42:33,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 04:42:33,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047882023] [2025-02-06 04:42:33,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:33,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:42:33,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:33,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:42:33,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:42:33,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 21 [2025-02-06 04:42:33,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 583 transitions, 10579 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:33,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:33,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 21 [2025-02-06 04:42:33,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:33,635 INFO L124 PetriNetUnfolderBase]: 1195/2215 cut-off events. [2025-02-06 04:42:33,635 INFO L125 PetriNetUnfolderBase]: For 38635/38651 co-relation queries the response was YES. [2025-02-06 04:42:33,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19631 conditions, 2215 events. 1195/2215 cut-off events. For 38635/38651 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12979 event pairs, 16 based on Foata normal form. 3/2207 useless extension candidates. Maximal degree in co-relation 19542. Up to 1557 conditions per place. [2025-02-06 04:42:33,654 INFO L140 encePairwiseOnDemand]: 12/21 looper letters, 401 selfloop transitions, 21 changer transitions 4/597 dead transitions. [2025-02-06 04:42:33,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 597 transitions, 11513 flow [2025-02-06 04:42:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:42:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:42:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2025-02-06 04:42:33,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2025-02-06 04:42:33,655 INFO L175 Difference]: Start difference. First operand has 283 places, 583 transitions, 10579 flow. Second operand 10 states and 93 transitions. [2025-02-06 04:42:33,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 597 transitions, 11513 flow [2025-02-06 04:42:33,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 597 transitions, 11265 flow, removed 30 selfloop flow, removed 9 redundant places. [2025-02-06 04:42:33,955 INFO L231 Difference]: Finished difference. Result has 280 places, 583 transitions, 10412 flow [2025-02-06 04:42:33,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=10322, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10412, PETRI_PLACES=280, PETRI_TRANSITIONS=583} [2025-02-06 04:42:33,957 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 257 predicate places. [2025-02-06 04:42:33,957 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 583 transitions, 10412 flow [2025-02-06 04:42:33,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 04:42:33,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:33,957 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 04:42:33,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 04:42:33,959 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 04:42:33,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash -529752361, now seen corresponding path program 13 times [2025-02-06 04:42:33,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:33,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300033462] [2025-02-06 04:42:33,959 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:33,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:33,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:42:33,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:33,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:33,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:34,130 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 04:42:34,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:34,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300033462] [2025-02-06 04:42:34,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300033462] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:34,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581689272] [2025-02-06 04:42:34,130 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:34,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:34,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:34,132 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 04:42:34,134 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 04:42:34,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:42:34,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:34,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:34,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:34,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 04:42:34,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:34,376 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 04:42:34,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:34,756 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 04:42:34,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581689272] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:34,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:34,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2025-02-06 04:42:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571929376] [2025-02-06 04:42:34,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:34,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-06 04:42:34,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:34,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-06 04:42:34,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 04:42:34,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:34,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 583 transitions, 10412 flow. Second operand has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 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 04:42:34,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:34,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:34,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:37,956 INFO L124 PetriNetUnfolderBase]: 2047/3561 cut-off events. [2025-02-06 04:42:37,956 INFO L125 PetriNetUnfolderBase]: For 65774/65774 co-relation queries the response was YES. [2025-02-06 04:42:37,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31417 conditions, 3561 events. 2047/3561 cut-off events. For 65774/65774 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20839 event pairs, 37 based on Foata normal form. 6/3567 useless extension candidates. Maximal degree in co-relation 31328. Up to 1034 conditions per place. [2025-02-06 04:42:37,990 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 361 selfloop transitions, 644 changer transitions 30/1036 dead transitions. [2025-02-06 04:42:37,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 1036 transitions, 19903 flow [2025-02-06 04:42:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2025-02-06 04:42:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2025-02-06 04:42:37,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 677 transitions. [2025-02-06 04:42:37,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3792717086834734 [2025-02-06 04:42:37,994 INFO L175 Difference]: Start difference. First operand has 280 places, 583 transitions, 10412 flow. Second operand 85 states and 677 transitions. [2025-02-06 04:42:37,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 1036 transitions, 19903 flow [2025-02-06 04:42:38,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1036 transitions, 19831 flow, removed 20 selfloop flow, removed 7 redundant places. [2025-02-06 04:42:38,557 INFO L231 Difference]: Finished difference. Result has 369 places, 865 transitions, 18255 flow [2025-02-06 04:42:38,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=10348, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=18255, PETRI_PLACES=369, PETRI_TRANSITIONS=865} [2025-02-06 04:42:38,558 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 346 predicate places. [2025-02-06 04:42:38,558 INFO L471 AbstractCegarLoop]: Abstraction has has 369 places, 865 transitions, 18255 flow [2025-02-06 04:42:38,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.705882352941177) internal successors, (160), 34 states have internal predecessors, (160), 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 04:42:38,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:38,558 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 04:42:38,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 04:42:38,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 04:42:38,758 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 04:42:38,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:38,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1773726905, now seen corresponding path program 14 times [2025-02-06 04:42:38,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:38,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301245155] [2025-02-06 04:42:38,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:38,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:38,761 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:38,764 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:38,764 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:38,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:38,931 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 04:42:38,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:38,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301245155] [2025-02-06 04:42:38,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301245155] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:38,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855515967] [2025-02-06 04:42:38,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:38,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:38,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:38,934 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 04:42:38,936 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 04:42:38,960 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:38,968 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:38,969 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:38,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:38,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 04:42:38,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:39,184 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 04:42:39,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:39,566 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 04:42:39,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855515967] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:39,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:39,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2025-02-06 04:42:39,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390919420] [2025-02-06 04:42:39,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:39,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-06 04:42:39,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:39,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-06 04:42:39,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 04:42:39,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:39,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 865 transitions, 18255 flow. Second operand has 33 states, 33 states have (on average 4.7272727272727275) internal successors, (156), 33 states have internal predecessors, (156), 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 04:42:39,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:39,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:39,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:42,446 INFO L124 PetriNetUnfolderBase]: 2292/4082 cut-off events. [2025-02-06 04:42:42,446 INFO L125 PetriNetUnfolderBase]: For 96459/96459 co-relation queries the response was YES. [2025-02-06 04:42:42,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39709 conditions, 4082 events. 2292/4082 cut-off events. For 96459/96459 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 25065 event pairs, 74 based on Foata normal form. 4/4086 useless extension candidates. Maximal degree in co-relation 39604. Up to 1116 conditions per place. [2025-02-06 04:42:42,484 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 375 selfloop transitions, 742 changer transitions 23/1141 dead transitions. [2025-02-06 04:42:42,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 1141 transitions, 24783 flow [2025-02-06 04:42:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-02-06 04:42:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2025-02-06 04:42:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 553 transitions. [2025-02-06 04:42:42,486 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2025-02-06 04:42:42,486 INFO L175 Difference]: Start difference. First operand has 369 places, 865 transitions, 18255 flow. Second operand 66 states and 553 transitions. [2025-02-06 04:42:42,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 1141 transitions, 24783 flow [2025-02-06 04:42:43,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1141 transitions, 23953 flow, removed 305 selfloop flow, removed 17 redundant places. [2025-02-06 04:42:43,563 INFO L231 Difference]: Finished difference. Result has 429 places, 977 transitions, 22375 flow [2025-02-06 04:42:43,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=17569, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=642, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=22375, PETRI_PLACES=429, PETRI_TRANSITIONS=977} [2025-02-06 04:42:43,564 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 406 predicate places. [2025-02-06 04:42:43,565 INFO L471 AbstractCegarLoop]: Abstraction has has 429 places, 977 transitions, 22375 flow [2025-02-06 04:42:43,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.7272727272727275) internal successors, (156), 33 states have internal predecessors, (156), 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 04:42:43,565 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:43,565 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 04:42:43,571 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 04:42:43,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:43,765 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 04:42:43,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1243854769, now seen corresponding path program 15 times [2025-02-06 04:42:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424079242] [2025-02-06 04:42:43,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:43,768 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-02-06 04:42:43,771 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:43,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 04:42:43,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:43,974 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 04:42:43,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:43,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424079242] [2025-02-06 04:42:43,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424079242] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:43,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125045757] [2025-02-06 04:42:43,975 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:43,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:43,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:43,977 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 04:42:43,983 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 04:42:44,006 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-02-06 04:42:44,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:44,016 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-06 04:42:44,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:44,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 04:42:44,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:44,250 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 04:42:44,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:44,686 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 04:42:44,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125045757] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:44,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2025-02-06 04:42:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542075003] [2025-02-06 04:42:44,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:44,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-06 04:42:44,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:44,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-06 04:42:44,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 04:42:44,697 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:44,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 977 transitions, 22375 flow. Second operand has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 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 04:42:44,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:44,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:44,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:49,256 INFO L124 PetriNetUnfolderBase]: 2840/5104 cut-off events. [2025-02-06 04:42:49,256 INFO L125 PetriNetUnfolderBase]: For 166422/166422 co-relation queries the response was YES. [2025-02-06 04:42:49,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53875 conditions, 5104 events. 2840/5104 cut-off events. For 166422/166422 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 33257 event pairs, 56 based on Foata normal form. 8/5112 useless extension candidates. Maximal degree in co-relation 53761. Up to 1302 conditions per place. [2025-02-06 04:42:49,307 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 429 selfloop transitions, 981 changer transitions 27/1438 dead transitions. [2025-02-06 04:42:49,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 1438 transitions, 34096 flow [2025-02-06 04:42:49,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-02-06 04:42:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2025-02-06 04:42:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 815 transitions. [2025-02-06 04:42:49,309 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37679149329634765 [2025-02-06 04:42:49,310 INFO L175 Difference]: Start difference. First operand has 429 places, 977 transitions, 22375 flow. Second operand 103 states and 815 transitions. [2025-02-06 04:42:49,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 1438 transitions, 34096 flow [2025-02-06 04:42:51,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1438 transitions, 32989 flow, removed 234 selfloop flow, removed 32 redundant places. [2025-02-06 04:42:51,056 INFO L231 Difference]: Finished difference. Result has 525 places, 1228 transitions, 30953 flow [2025-02-06 04:42:51,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=21509, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=977, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=752, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=30953, PETRI_PLACES=525, PETRI_TRANSITIONS=1228} [2025-02-06 04:42:51,061 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 502 predicate places. [2025-02-06 04:42:51,061 INFO L471 AbstractCegarLoop]: Abstraction has has 525 places, 1228 transitions, 30953 flow [2025-02-06 04:42:51,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.696969696969697) internal successors, (155), 33 states have internal predecessors, (155), 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 04:42:51,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:51,061 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 04:42:51,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:51,261 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,SelfDestructingSolverStorable16 [2025-02-06 04:42:51,261 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:42:51,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:51,262 INFO L85 PathProgramCache]: Analyzing trace with hash 558064775, now seen corresponding path program 16 times [2025-02-06 04:42:51,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:51,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418999485] [2025-02-06 04:42:51,262 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:51,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:51,265 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:51,269 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:51,269 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:51,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:51,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418999485] [2025-02-06 04:42:51,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418999485] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047197970] [2025-02-06 04:42:51,393 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:51,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:51,399 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 04:42:51,400 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 04:42:51,425 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:42:51,434 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:42:51,434 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:51,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:51,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 04:42:51,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:51,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:52,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047197970] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:52,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:52,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2025-02-06 04:42:52,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787293119] [2025-02-06 04:42:52,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:52,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-06 04:42:52,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:52,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-06 04:42:52,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 04:42:52,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:42:52,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 1228 transitions, 30953 flow. Second operand has 33 states, 33 states have (on average 4.7272727272727275) internal successors, (156), 33 states have internal predecessors, (156), 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 04:42:52,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:52,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:42:52,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:58,607 INFO L124 PetriNetUnfolderBase]: 3390/6062 cut-off events. [2025-02-06 04:42:58,607 INFO L125 PetriNetUnfolderBase]: For 262413/262413 co-relation queries the response was YES. [2025-02-06 04:42:58,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70182 conditions, 6062 events. 3390/6062 cut-off events. For 262413/262413 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 40864 event pairs, 51 based on Foata normal form. 11/6073 useless extension candidates. Maximal degree in co-relation 70047. Up to 1605 conditions per place. [2025-02-06 04:42:58,781 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 510 selfloop transitions, 1257 changer transitions 31/1799 dead transitions. [2025-02-06 04:42:58,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 1799 transitions, 46292 flow [2025-02-06 04:42:58,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2025-02-06 04:42:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2025-02-06 04:42:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 1013 transitions. [2025-02-06 04:42:58,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36822973464194836 [2025-02-06 04:42:58,787 INFO L175 Difference]: Start difference. First operand has 525 places, 1228 transitions, 30953 flow. Second operand 131 states and 1013 transitions. [2025-02-06 04:42:58,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 1799 transitions, 46292 flow [2025-02-06 04:43:01,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 1799 transitions, 44276 flow, removed 674 selfloop flow, removed 24 redundant places. [2025-02-06 04:43:01,845 INFO L231 Difference]: Finished difference. Result has 649 places, 1534 transitions, 41432 flow [2025-02-06 04:43:01,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=29550, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=969, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=131, PETRI_FLOW=41432, PETRI_PLACES=649, PETRI_TRANSITIONS=1534} [2025-02-06 04:43:01,846 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 626 predicate places. [2025-02-06 04:43:01,846 INFO L471 AbstractCegarLoop]: Abstraction has has 649 places, 1534 transitions, 41432 flow [2025-02-06 04:43:01,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.7272727272727275) internal successors, (156), 33 states have internal predecessors, (156), 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 04:43:01,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:01,846 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 04:43:01,852 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 04:43:02,047 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,SelfDestructingSolverStorable17 [2025-02-06 04:43:02,047 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:43:02,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 187761577, now seen corresponding path program 17 times [2025-02-06 04:43:02,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:02,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92654187] [2025-02-06 04:43:02,048 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:43:02,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:02,050 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:02,058 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:02,058 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:43:02,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:02,227 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 04:43:02,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92654187] [2025-02-06 04:43:02,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92654187] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881916653] [2025-02-06 04:43:02,228 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:43:02,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:02,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:02,232 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 04:43:02,233 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 04:43:02,254 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:02,262 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:02,262 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:43:02,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:02,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 04:43:02,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:02,478 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 04:43:02,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:02,868 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 04:43:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881916653] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:43:02,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:43:02,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2025-02-06 04:43:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322005083] [2025-02-06 04:43:02,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:43:02,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-06 04:43:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:02,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-06 04:43:02,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 04:43:02,881 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:43:02,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 1534 transitions, 41432 flow. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 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 04:43:02,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:02,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:43:02,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:07,513 INFO L124 PetriNetUnfolderBase]: 4010/7140 cut-off events. [2025-02-06 04:43:07,513 INFO L125 PetriNetUnfolderBase]: For 332906/332906 co-relation queries the response was YES. [2025-02-06 04:43:07,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87114 conditions, 7140 events. 4010/7140 cut-off events. For 332906/332906 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 49204 event pairs, 88 based on Foata normal form. 6/7146 useless extension candidates. Maximal degree in co-relation 86968. Up to 2034 conditions per place. [2025-02-06 04:43:07,595 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 588 selfloop transitions, 1453 changer transitions 19/2061 dead transitions. [2025-02-06 04:43:07,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 2061 transitions, 58281 flow [2025-02-06 04:43:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-02-06 04:43:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2025-02-06 04:43:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 615 transitions. [2025-02-06 04:43:07,596 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39575289575289574 [2025-02-06 04:43:07,596 INFO L175 Difference]: Start difference. First operand has 649 places, 1534 transitions, 41432 flow. Second operand 74 states and 615 transitions. [2025-02-06 04:43:07,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 2061 transitions, 58281 flow [2025-02-06 04:43:12,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 2061 transitions, 56422 flow, removed 559 selfloop flow, removed 38 redundant places. [2025-02-06 04:43:12,452 INFO L231 Difference]: Finished difference. Result has 710 places, 1851 transitions, 54417 flow [2025-02-06 04:43:12,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40051, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=54417, PETRI_PLACES=710, PETRI_TRANSITIONS=1851} [2025-02-06 04:43:12,461 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 687 predicate places. [2025-02-06 04:43:12,461 INFO L471 AbstractCegarLoop]: Abstraction has has 710 places, 1851 transitions, 54417 flow [2025-02-06 04:43:12,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 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 04:43:12,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:12,461 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 04:43:12,467 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 04:43:12,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:12,666 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:43:12,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash 408112485, now seen corresponding path program 18 times [2025-02-06 04:43:12,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:12,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799448938] [2025-02-06 04:43:12,668 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:43:12,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:12,671 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:12,674 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:12,674 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:43:12,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:12,900 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 04:43:12,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:12,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799448938] [2025-02-06 04:43:12,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799448938] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:12,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116902190] [2025-02-06 04:43:12,901 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:43:12,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:12,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:12,904 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 04:43:12,905 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 04:43:12,929 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:12,937 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:12,937 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:43:12,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:12,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 04:43:12,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:13,127 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 04:43:13,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:13,451 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 04:43:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116902190] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:43:13,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:43:13,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2025-02-06 04:43:13,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137396501] [2025-02-06 04:43:13,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:43:13,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-06 04:43:13,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:13,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-06 04:43:13,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=937, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 04:43:13,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:43:13,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 1851 transitions, 54417 flow. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 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 04:43:13,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:13,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:43:13,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:18,299 INFO L124 PetriNetUnfolderBase]: 4367/7751 cut-off events. [2025-02-06 04:43:18,299 INFO L125 PetriNetUnfolderBase]: For 364495/364495 co-relation queries the response was YES. [2025-02-06 04:43:18,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99233 conditions, 7751 events. 4367/7751 cut-off events. For 364495/364495 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 54267 event pairs, 101 based on Foata normal form. 2/7753 useless extension candidates. Maximal degree in co-relation 99070. Up to 3888 conditions per place. [2025-02-06 04:43:18,404 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 664 selfloop transitions, 1508 changer transitions 12/2185 dead transitions. [2025-02-06 04:43:18,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 2185 transitions, 66707 flow [2025-02-06 04:43:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-02-06 04:43:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2025-02-06 04:43:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 444 transitions. [2025-02-06 04:43:18,406 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38441558441558443 [2025-02-06 04:43:18,406 INFO L175 Difference]: Start difference. First operand has 710 places, 1851 transitions, 54417 flow. Second operand 55 states and 444 transitions. [2025-02-06 04:43:18,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 2185 transitions, 66707 flow [2025-02-06 04:43:25,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 2185 transitions, 65170 flow, removed 685 selfloop flow, removed 18 redundant places. [2025-02-06 04:43:25,585 INFO L231 Difference]: Finished difference. Result has 771 places, 2069 transitions, 65454 flow [2025-02-06 04:43:25,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=53067, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=65454, PETRI_PLACES=771, PETRI_TRANSITIONS=2069} [2025-02-06 04:43:25,587 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 748 predicate places. [2025-02-06 04:43:25,587 INFO L471 AbstractCegarLoop]: Abstraction has has 771 places, 2069 transitions, 65454 flow [2025-02-06 04:43:25,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 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 04:43:25,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:25,588 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 04:43:25,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 04:43:25,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:25,792 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:43:25,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1281853165, now seen corresponding path program 19 times [2025-02-06 04:43:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483256217] [2025-02-06 04:43:25,793 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:43:25,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:25,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:43:25,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:25,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:25,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:26,112 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 04:43:26,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:26,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483256217] [2025-02-06 04:43:26,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483256217] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:26,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136748608] [2025-02-06 04:43:26,112 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:43:26,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:26,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:26,115 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:43:26,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 04:43:26,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:43:26,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:26,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:26,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:26,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 04:43:26,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:26,372 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 04:43:26,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:26,751 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 04:43:26,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136748608] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:43:26,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:43:26,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2025-02-06 04:43:26,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617663907] [2025-02-06 04:43:26,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:43:26,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-06 04:43:26,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:26,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-06 04:43:26,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 04:43:26,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:43:26,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 2069 transitions, 65454 flow. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 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 04:43:26,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:26,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:43:26,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:33,295 INFO L124 PetriNetUnfolderBase]: 4807/8572 cut-off events. [2025-02-06 04:43:33,295 INFO L125 PetriNetUnfolderBase]: For 369225/369225 co-relation queries the response was YES. [2025-02-06 04:43:33,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114469 conditions, 8572 events. 4807/8572 cut-off events. For 369225/369225 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 61697 event pairs, 97 based on Foata normal form. 4/8576 useless extension candidates. Maximal degree in co-relation 114285. Up to 3654 conditions per place. [2025-02-06 04:43:33,415 INFO L140 encePairwiseOnDemand]: 9/21 looper letters, 835 selfloop transitions, 1628 changer transitions 18/2482 dead transitions. [2025-02-06 04:43:33,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 2482 transitions, 80366 flow [2025-02-06 04:43:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-02-06 04:43:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2025-02-06 04:43:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 638 transitions. [2025-02-06 04:43:33,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3845690174804099 [2025-02-06 04:43:33,419 INFO L175 Difference]: Start difference. First operand has 771 places, 2069 transitions, 65454 flow. Second operand 79 states and 638 transitions. [2025-02-06 04:43:33,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 847 places, 2482 transitions, 80366 flow [2025-02-06 04:43:41,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 834 places, 2482 transitions, 79895 flow, removed 164 selfloop flow, removed 13 redundant places. [2025-02-06 04:43:41,778 INFO L231 Difference]: Finished difference. Result has 862 places, 2284 transitions, 78364 flow [2025-02-06 04:43:41,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=65003, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2069, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=78364, PETRI_PLACES=862, PETRI_TRANSITIONS=2284} [2025-02-06 04:43:41,780 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, 839 predicate places. [2025-02-06 04:43:41,781 INFO L471 AbstractCegarLoop]: Abstraction has has 862 places, 2284 transitions, 78364 flow [2025-02-06 04:43:41,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 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 04:43:41,781 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:41,781 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 04:43:41,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 04:43:41,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-02-06 04:43:41,981 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:43:41,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:41,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1343830449, now seen corresponding path program 20 times [2025-02-06 04:43:41,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:41,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042528219] [2025-02-06 04:43:41,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:43:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:41,985 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:41,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:41,988 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:43:41,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:42,132 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 04:43:42,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:42,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042528219] [2025-02-06 04:43:42,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042528219] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:42,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826985917] [2025-02-06 04:43:42,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:43:42,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:42,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:42,135 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:43:42,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 04:43:42,159 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:43:42,168 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:42,168 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:43:42,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:42,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 04:43:42,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:42,375 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 04:43:42,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:42,712 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 04:43:42,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826985917] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:43:42,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:43:42,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2025-02-06 04:43:42,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56854922] [2025-02-06 04:43:42,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:43:42,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-06 04:43:42,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:42,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-06 04:43:42,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 04:43:42,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 21 [2025-02-06 04:43:42,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 862 places, 2284 transitions, 78364 flow. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 34 states have internal predecessors, (159), 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 04:43:42,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:42,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 21 [2025-02-06 04:43:42,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:50,952 INFO L124 PetriNetUnfolderBase]: 5193/9259 cut-off events. [2025-02-06 04:43:50,953 INFO L125 PetriNetUnfolderBase]: For 457470/457470 co-relation queries the response was YES. [2025-02-06 04:43:51,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130552 conditions, 9259 events. 5193/9259 cut-off events. For 457470/457470 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 67639 event pairs, 107 based on Foata normal form. 5/9264 useless extension candidates. Maximal degree in co-relation 130343. Up to 4442 conditions per place. [2025-02-06 04:43:51,105 INFO L140 encePairwiseOnDemand]: 10/21 looper letters, 768 selfloop transitions, 1854 changer transitions 18/2641 dead transitions. [2025-02-06 04:43:51,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 2641 transitions, 91249 flow [2025-02-06 04:43:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-02-06 04:43:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2025-02-06 04:43:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 563 transitions. [2025-02-06 04:43:51,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36229086229086227 [2025-02-06 04:43:51,106 INFO L175 Difference]: Start difference. First operand has 862 places, 2284 transitions, 78364 flow. Second operand 74 states and 563 transitions. [2025-02-06 04:43:51,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 2641 transitions, 91249 flow