./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/unroll-cond-3.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 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:21:34,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:21:34,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:21:34,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:21:34,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:21:34,780 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:21:34,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:21:34,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:21:34,781 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:21:34,781 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:21:34,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:21:34,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:21:34,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:21:34,782 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:21:34,782 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:21:34,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:21:34,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:21:34,782 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:21:34,783 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:21:34,783 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:21:34,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:21:34,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:21:34,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:21:34,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:21:34,785 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 -> 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 [2025-02-08 01:21:35,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:21:35,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:21:35,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:21:35,042 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:21:35,043 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:21:35,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2025-02-08 01:21:36,167 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a727bc4b3/e26f3494087e421e91e06d5c5f0c81e4/FLAG4d585b3c7 [2025-02-08 01:21:36,506 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:21:36,508 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2025-02-08 01:21:36,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a727bc4b3/e26f3494087e421e91e06d5c5f0c81e4/FLAG4d585b3c7 [2025-02-08 01:21:36,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a727bc4b3/e26f3494087e421e91e06d5c5f0c81e4 [2025-02-08 01:21:36,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:21:36,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:21:36,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:21:36,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:21:36,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:21:36,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:36,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dbac680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36, skipping insertion in model container [2025-02-08 01:21:36,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:36,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:21:36,911 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/unroll-cond-3.wvr.c[2667,2680] [2025-02-08 01:21:36,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:21:36,931 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:21:36,953 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/unroll-cond-3.wvr.c[2667,2680] [2025-02-08 01:21:36,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:21:36,972 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:21:36,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36 WrapperNode [2025-02-08 01:21:36,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:21:36,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:21:36,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:21:36,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:21:36,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:36,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,015 INFO L138 Inliner]: procedures = 23, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 146 [2025-02-08 01:21:37,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:21:37,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:21:37,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:21:37,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:21:37,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,045 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 01:21:37,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,049 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,051 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:21:37,054 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:21:37,054 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:21:37,054 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:21:37,055 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (1/1) ... [2025-02-08 01:21:37,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:21:37,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:37,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:21:37,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:21:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:21:37,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:21:37,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:21:37,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:21:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:21:37,112 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:21:37,171 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:21:37,172 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:21:37,456 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:21:37,457 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:21:37,636 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:21:37,636 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:21:37,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:21:37 BoogieIcfgContainer [2025-02-08 01:21:37,636 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:21:37,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:21:37,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:21:37,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:21:37,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:21:36" (1/3) ... [2025-02-08 01:21:37,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be92fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:21:37, skipping insertion in model container [2025-02-08 01:21:37,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:36" (2/3) ... [2025-02-08 01:21:37,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be92fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:21:37, skipping insertion in model container [2025-02-08 01:21:37,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:21:37" (3/3) ... [2025-02-08 01:21:37,643 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2025-02-08 01:21:37,654 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:21:37,655 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-cond-3.wvr.c that has 3 procedures, 18 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-08 01:21:37,655 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:21:37,691 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 01:21:37,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 20 transitions, 54 flow [2025-02-08 01:21:37,731 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2025-02-08 01:21:37,736 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:21:37,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 3/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-02-08 01:21:37,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 20 transitions, 54 flow [2025-02-08 01:21:37,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 46 flow [2025-02-08 01:21:37,750 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:21:37,757 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;@3f9762cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:21:37,758 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-08 01:21:37,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:21:37,765 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2025-02-08 01:21:37,765 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:21:37,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:37,766 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:37,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:37,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:37,770 INFO L85 PathProgramCache]: Analyzing trace with hash 696813122, now seen corresponding path program 1 times [2025-02-08 01:21:37,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:37,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68697504] [2025-02-08 01:21:37,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:37,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:37,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:21:37,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:21:37,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:37,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:38,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:38,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68697504] [2025-02-08 01:21:38,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68697504] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:38,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:38,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:21:38,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975588730] [2025-02-08 01:21:38,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:38,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:21:38,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:38,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:21:38,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:21:38,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:38,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:38,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:38,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:38,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:38,071 INFO L124 PetriNetUnfolderBase]: 38/71 cut-off events. [2025-02-08 01:21:38,072 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-08 01:21:38,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 71 events. 38/71 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 22 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 120. Up to 70 conditions per place. [2025-02-08 01:21:38,073 INFO L140 encePairwiseOnDemand]: 17/20 looper letters, 15 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2025-02-08 01:21:38,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 82 flow [2025-02-08 01:21:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:21:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:21:38,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2025-02-08 01:21:38,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-08 01:21:38,081 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 27 transitions. [2025-02-08 01:21:38,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 82 flow [2025-02-08 01:21:38,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:21:38,085 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2025-02-08 01:21:38,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2025-02-08 01:21:38,089 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2025-02-08 01:21:38,089 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2025-02-08 01:21:38,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:38,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:38,089 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:38,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:21:38,089 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:38,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:38,090 INFO L85 PathProgramCache]: Analyzing trace with hash 679871291, now seen corresponding path program 1 times [2025-02-08 01:21:38,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:38,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102958683] [2025-02-08 01:21:38,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:38,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:38,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:21:38,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:21:38,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:38,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:38,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:38,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102958683] [2025-02-08 01:21:38,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102958683] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:38,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:38,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:38,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413535056] [2025-02-08 01:21:38,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:38,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:21:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:38,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:21:38,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:21:38,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:38,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:38,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:38,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:38,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:38,540 INFO L124 PetriNetUnfolderBase]: 65/123 cut-off events. [2025-02-08 01:21:38,541 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:21:38,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 123 events. 65/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 324 event pairs, 22 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 248. Up to 71 conditions per place. [2025-02-08 01:21:38,542 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 32 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2025-02-08 01:21:38,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 169 flow [2025-02-08 01:21:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:21:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:21:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2025-02-08 01:21:38,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.52 [2025-02-08 01:21:38,546 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 52 transitions. [2025-02-08 01:21:38,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 169 flow [2025-02-08 01:21:38,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 38 transitions, 165 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 01:21:38,547 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2025-02-08 01:21:38,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2025-02-08 01:21:38,549 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2025-02-08 01:21:38,549 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2025-02-08 01:21:38,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:38,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:38,549 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:38,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:21:38,550 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:38,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1989279697, now seen corresponding path program 2 times [2025-02-08 01:21:38,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:38,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306028574] [2025-02-08 01:21:38,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:21:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:38,564 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:21:38,608 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 15 statements. [2025-02-08 01:21:38,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:21:38,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:38,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:38,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306028574] [2025-02-08 01:21:38,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306028574] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:38,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:38,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855043145] [2025-02-08 01:21:38,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:38,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:21:38,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:38,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:21:38,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:21:38,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:38,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:38,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:38,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:38,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:38,825 INFO L124 PetriNetUnfolderBase]: 98/180 cut-off events. [2025-02-08 01:21:38,825 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2025-02-08 01:21:38,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 180 events. 98/180 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 525 event pairs, 22 based on Foata normal form. 2/147 useless extension candidates. Maximal degree in co-relation 508. Up to 78 conditions per place. [2025-02-08 01:21:38,827 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 36 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2025-02-08 01:21:38,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 278 flow [2025-02-08 01:21:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:21:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:21:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2025-02-08 01:21:38,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2025-02-08 01:21:38,829 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 6 states and 62 transitions. [2025-02-08 01:21:38,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 278 flow [2025-02-08 01:21:38,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 49 transitions, 261 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-02-08 01:21:38,831 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 163 flow [2025-02-08 01:21:38,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2025-02-08 01:21:38,832 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2025-02-08 01:21:38,832 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 163 flow [2025-02-08 01:21:38,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:38,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:38,832 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:38,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:21:38,832 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:38,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:38,833 INFO L85 PathProgramCache]: Analyzing trace with hash -990890169, now seen corresponding path program 3 times [2025-02-08 01:21:38,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:38,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324611368] [2025-02-08 01:21:38,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:21:38,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:38,841 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:21:38,862 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 15 statements. [2025-02-08 01:21:38,865 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:21:38,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:38,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:38,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324611368] [2025-02-08 01:21:38,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324611368] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:38,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:38,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:38,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453908373] [2025-02-08 01:21:38,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:38,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:21:38,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:38,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:21:38,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:21:38,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:38,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:38,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:38,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:38,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:39,152 INFO L124 PetriNetUnfolderBase]: 107/194 cut-off events. [2025-02-08 01:21:39,152 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2025-02-08 01:21:39,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 194 events. 107/194 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 600 event pairs, 25 based on Foata normal form. 3/169 useless extension candidates. Maximal degree in co-relation 699. Up to 102 conditions per place. [2025-02-08 01:21:39,154 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 36 selfloop transitions, 14 changer transitions 0/51 dead transitions. [2025-02-08 01:21:39,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 362 flow [2025-02-08 01:21:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:21:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:21:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2025-02-08 01:21:39,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.52 [2025-02-08 01:21:39,156 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 163 flow. Second operand 5 states and 52 transitions. [2025-02-08 01:21:39,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 362 flow [2025-02-08 01:21:39,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 51 transitions, 348 flow, removed 7 selfloop flow, removed 0 redundant places. [2025-02-08 01:21:39,159 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 255 flow [2025-02-08 01:21:39,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2025-02-08 01:21:39,159 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2025-02-08 01:21:39,159 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 255 flow [2025-02-08 01:21:39,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:39,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:39,160 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:39,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:21:39,160 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:39,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2099507571, now seen corresponding path program 4 times [2025-02-08 01:21:39,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:39,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449786873] [2025-02-08 01:21:39,161 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:21:39,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:39,167 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:21:39,183 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:21:39,186 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:21:39,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:39,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:39,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449786873] [2025-02-08 01:21:39,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449786873] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:39,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:39,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610345051] [2025-02-08 01:21:39,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:39,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:21:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:39,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:21:39,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:21:39,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:39,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2025-02-08 01:21:39,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:39,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:39,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:39,487 INFO L124 PetriNetUnfolderBase]: 104/191 cut-off events. [2025-02-08 01:21:39,487 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2025-02-08 01:21:39,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 191 events. 104/191 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 563 event pairs, 15 based on Foata normal form. 3/171 useless extension candidates. Maximal degree in co-relation 771. Up to 144 conditions per place. [2025-02-08 01:21:39,489 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 35 selfloop transitions, 18 changer transitions 0/54 dead transitions. [2025-02-08 01:21:39,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 459 flow [2025-02-08 01:21:39,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:21:39,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:21:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 58 transitions. [2025-02-08 01:21:39,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2025-02-08 01:21:39,490 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 255 flow. Second operand 6 states and 58 transitions. [2025-02-08 01:21:39,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 459 flow [2025-02-08 01:21:39,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 441 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-08 01:21:39,494 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 358 flow [2025-02-08 01:21:39,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2025-02-08 01:21:39,494 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 27 predicate places. [2025-02-08 01:21:39,494 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 358 flow [2025-02-08 01:21:39,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 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) [2025-02-08 01:21:39,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:39,495 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:39,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:21:39,495 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:39,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:39,496 INFO L85 PathProgramCache]: Analyzing trace with hash -885430029, now seen corresponding path program 5 times [2025-02-08 01:21:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:39,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258547388] [2025-02-08 01:21:39,496 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:21:39,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:39,502 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:21:39,509 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:21:39,510 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:21:39,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:39,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:39,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258547388] [2025-02-08 01:21:39,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258547388] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:39,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:39,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:39,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549076097] [2025-02-08 01:21:39,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:39,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:21:39,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:39,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:21:39,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:21:39,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:39,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 358 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:39,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:39,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:39,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:39,738 INFO L124 PetriNetUnfolderBase]: 105/194 cut-off events. [2025-02-08 01:21:39,738 INFO L125 PetriNetUnfolderBase]: For 489/489 co-relation queries the response was YES. [2025-02-08 01:21:39,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 194 events. 105/194 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 611 event pairs, 25 based on Foata normal form. 2/173 useless extension candidates. Maximal degree in co-relation 835. Up to 104 conditions per place. [2025-02-08 01:21:39,740 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 16 changer transitions 0/55 dead transitions. [2025-02-08 01:21:39,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 506 flow [2025-02-08 01:21:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:21:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:21:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 51 transitions. [2025-02-08 01:21:39,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51 [2025-02-08 01:21:39,741 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 358 flow. Second operand 5 states and 51 transitions. [2025-02-08 01:21:39,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 506 flow [2025-02-08 01:21:39,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 451 flow, removed 14 selfloop flow, removed 2 redundant places. [2025-02-08 01:21:39,745 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 345 flow [2025-02-08 01:21:39,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2025-02-08 01:21:39,746 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 30 predicate places. [2025-02-08 01:21:39,746 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 345 flow [2025-02-08 01:21:39,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:39,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:39,747 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:39,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:21:39,747 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:39,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:39,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1215084363, now seen corresponding path program 6 times [2025-02-08 01:21:39,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:39,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175896666] [2025-02-08 01:21:39,748 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:21:39,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:39,753 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:21:39,765 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 15 statements. [2025-02-08 01:21:39,768 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:21:39,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:39,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:39,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175896666] [2025-02-08 01:21:39,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175896666] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:39,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:39,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:39,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128429676] [2025-02-08 01:21:39,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:39,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:21:39,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:39,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:21:39,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:21:39,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:39,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:39,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:39,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:39,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:39,957 INFO L124 PetriNetUnfolderBase]: 104/187 cut-off events. [2025-02-08 01:21:39,957 INFO L125 PetriNetUnfolderBase]: For 678/678 co-relation queries the response was YES. [2025-02-08 01:21:39,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 187 events. 104/187 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 564 event pairs, 36 based on Foata normal form. 2/166 useless extension candidates. Maximal degree in co-relation 800. Up to 145 conditions per place. [2025-02-08 01:21:39,959 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 32 selfloop transitions, 18 changer transitions 0/51 dead transitions. [2025-02-08 01:21:39,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 465 flow [2025-02-08 01:21:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:21:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:21:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2025-02-08 01:21:39,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47 [2025-02-08 01:21:39,960 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 345 flow. Second operand 5 states and 47 transitions. [2025-02-08 01:21:39,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 465 flow [2025-02-08 01:21:39,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 429 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-08 01:21:39,963 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 349 flow [2025-02-08 01:21:39,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=349, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2025-02-08 01:21:39,963 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 32 predicate places. [2025-02-08 01:21:39,964 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 349 flow [2025-02-08 01:21:39,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:39,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:39,964 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:39,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:21:39,964 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:39,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1541134345, now seen corresponding path program 1 times [2025-02-08 01:21:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:39,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981450889] [2025-02-08 01:21:39,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:39,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:39,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:21:40,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:40,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:40,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:40,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:40,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:40,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981450889] [2025-02-08 01:21:40,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981450889] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:21:40,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565649419] [2025-02-08 01:21:40,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:40,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:21:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:40,166 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:21:40,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 01:21:40,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:21:40,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:40,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:40,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:40,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 01:21:40,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:21:40,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 01:21:40,587 INFO L349 Elim1Store]: treesize reduction 80, result has 14.0 percent of original size [2025-02-08 01:21:40,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 223 treesize of output 152 [2025-02-08 01:21:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:40,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:21:41,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 280 [2025-02-08 01:21:41,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:21:41,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 1183 treesize of output 873 [2025-02-08 01:21:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565649419] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:21:59,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:21:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-02-08 01:21:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040355562] [2025-02-08 01:21:59,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:21:59,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 01:21:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:59,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 01:21:59,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2025-02-08 01:21:59,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:59,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 349 flow. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:59,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:59,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:59,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:00,014 INFO L124 PetriNetUnfolderBase]: 339/613 cut-off events. [2025-02-08 01:22:00,014 INFO L125 PetriNetUnfolderBase]: For 1874/1874 co-relation queries the response was YES. [2025-02-08 01:22:00,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2549 conditions, 613 events. 339/613 cut-off events. For 1874/1874 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2686 event pairs, 20 based on Foata normal form. 8/512 useless extension candidates. Maximal degree in co-relation 1968. Up to 191 conditions per place. [2025-02-08 01:22:00,018 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 67 selfloop transitions, 35 changer transitions 70/173 dead transitions. [2025-02-08 01:22:00,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 173 transitions, 1471 flow [2025-02-08 01:22:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 01:22:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 01:22:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 205 transitions. [2025-02-08 01:22:00,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2025-02-08 01:22:00,022 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 349 flow. Second operand 21 states and 205 transitions. [2025-02-08 01:22:00,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 173 transitions, 1471 flow [2025-02-08 01:22:00,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 173 transitions, 1399 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-08 01:22:00,029 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 564 flow [2025-02-08 01:22:00,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=564, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2025-02-08 01:22:00,030 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 60 predicate places. [2025-02-08 01:22:00,031 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 564 flow [2025-02-08 01:22:00,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:00,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:00,032 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:00,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 01:22:00,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:00,233 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:00,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1897349953, now seen corresponding path program 1 times [2025-02-08 01:22:00,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:00,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717534466] [2025-02-08 01:22:00,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:22:00,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:00,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:22:00,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:00,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:00,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:00,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:00,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717534466] [2025-02-08 01:22:00,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717534466] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:00,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348309187] [2025-02-08 01:22:00,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:22:00,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:00,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:00,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:00,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 01:22:00,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:22:00,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:00,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:00,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:00,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 01:22:00,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:00,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 01:22:00,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 01:22:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:00,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:01,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2025-02-08 01:22:01,017 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:22:01,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2025-02-08 01:22:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:01,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348309187] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:01,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:01,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2025-02-08 01:22:01,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705325143] [2025-02-08 01:22:01,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:01,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 01:22:01,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:01,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 01:22:01,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2025-02-08 01:22:01,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:01,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 564 flow. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:01,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:01,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:01,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:02,258 INFO L124 PetriNetUnfolderBase]: 323/624 cut-off events. [2025-02-08 01:22:02,258 INFO L125 PetriNetUnfolderBase]: For 2405/2405 co-relation queries the response was YES. [2025-02-08 01:22:02,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 624 events. 323/624 cut-off events. For 2405/2405 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2929 event pairs, 4 based on Foata normal form. 7/629 useless extension candidates. Maximal degree in co-relation 2618. Up to 191 conditions per place. [2025-02-08 01:22:02,262 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 93 selfloop transitions, 55 changer transitions 4/153 dead transitions. [2025-02-08 01:22:02,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 153 transitions, 1400 flow [2025-02-08 01:22:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 01:22:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 01:22:02,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 169 transitions. [2025-02-08 01:22:02,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2025-02-08 01:22:02,264 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 564 flow. Second operand 19 states and 169 transitions. [2025-02-08 01:22:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 153 transitions, 1400 flow [2025-02-08 01:22:02,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 153 transitions, 1218 flow, removed 72 selfloop flow, removed 10 redundant places. [2025-02-08 01:22:02,274 INFO L231 Difference]: Finished difference. Result has 89 places, 88 transitions, 846 flow [2025-02-08 01:22:02,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=846, PETRI_PLACES=89, PETRI_TRANSITIONS=88} [2025-02-08 01:22:02,274 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 68 predicate places. [2025-02-08 01:22:02,275 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 88 transitions, 846 flow [2025-02-08 01:22:02,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:02,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:02,275 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:02,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 01:22:02,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:02,476 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:02,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:02,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1850783191, now seen corresponding path program 2 times [2025-02-08 01:22:02,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:02,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857937800] [2025-02-08 01:22:02,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:22:02,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:02,484 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:22:02,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:02,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:02,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857937800] [2025-02-08 01:22:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857937800] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:02,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155806337] [2025-02-08 01:22:02,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:22:02,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:02,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:02,653 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:02,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 01:22:02,690 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:22:02,776 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:02,777 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:02,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:02,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:22:02,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:02,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:02,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155806337] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:02,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:02,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-08 01:22:02,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896292735] [2025-02-08 01:22:02,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:02,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:22:02,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:02,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:22:02,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:22:02,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:02,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 88 transitions, 846 flow. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:02,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:02,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:02,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:03,121 INFO L124 PetriNetUnfolderBase]: 363/697 cut-off events. [2025-02-08 01:22:03,122 INFO L125 PetriNetUnfolderBase]: For 2720/2720 co-relation queries the response was YES. [2025-02-08 01:22:03,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3352 conditions, 697 events. 363/697 cut-off events. For 2720/2720 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3359 event pairs, 96 based on Foata normal form. 15/698 useless extension candidates. Maximal degree in co-relation 3122. Up to 317 conditions per place. [2025-02-08 01:22:03,126 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 90 selfloop transitions, 50 changer transitions 0/141 dead transitions. [2025-02-08 01:22:03,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 141 transitions, 1437 flow [2025-02-08 01:22:03,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:22:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:22:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2025-02-08 01:22:03,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.495 [2025-02-08 01:22:03,128 INFO L175 Difference]: Start difference. First operand has 89 places, 88 transitions, 846 flow. Second operand 10 states and 99 transitions. [2025-02-08 01:22:03,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 141 transitions, 1437 flow [2025-02-08 01:22:03,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 141 transitions, 1361 flow, removed 32 selfloop flow, removed 3 redundant places. [2025-02-08 01:22:03,138 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 1141 flow [2025-02-08 01:22:03,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1141, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2025-02-08 01:22:03,138 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 78 predicate places. [2025-02-08 01:22:03,139 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 1141 flow [2025-02-08 01:22:03,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:03,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:03,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:03,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 01:22:03,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:03,340 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:03,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1956243331, now seen corresponding path program 3 times [2025-02-08 01:22:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:03,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593039534] [2025-02-08 01:22:03,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:03,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:03,347 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:22:03,359 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:03,359 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:22:03,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:03,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593039534] [2025-02-08 01:22:03,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593039534] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021884774] [2025-02-08 01:22:03,598 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:03,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:03,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:03,603 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:03,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:22:03,656 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:22:03,684 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:03,684 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:22:03,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:03,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 01:22:03,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:03,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:22:03,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 109 [2025-02-08 01:22:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:03,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:04,611 INFO L349 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2025-02-08 01:22:04,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 42 [2025-02-08 01:22:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:04,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021884774] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:04,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:04,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2025-02-08 01:22:04,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552747556] [2025-02-08 01:22:04,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:04,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 01:22:04,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:04,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 01:22:04,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-02-08 01:22:04,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:04,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 1141 flow. Second operand has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:04,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:04,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:04,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:05,241 INFO L124 PetriNetUnfolderBase]: 408/798 cut-off events. [2025-02-08 01:22:05,241 INFO L125 PetriNetUnfolderBase]: For 3669/3669 co-relation queries the response was YES. [2025-02-08 01:22:05,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 798 events. 408/798 cut-off events. For 3669/3669 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4057 event pairs, 11 based on Foata normal form. 7/805 useless extension candidates. Maximal degree in co-relation 3910. Up to 226 conditions per place. [2025-02-08 01:22:05,246 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 92 selfloop transitions, 87 changer transitions 12/192 dead transitions. [2025-02-08 01:22:05,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 192 transitions, 1974 flow [2025-02-08 01:22:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-08 01:22:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-08 01:22:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 206 transitions. [2025-02-08 01:22:05,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.412 [2025-02-08 01:22:05,248 INFO L175 Difference]: Start difference. First operand has 99 places, 109 transitions, 1141 flow. Second operand 25 states and 206 transitions. [2025-02-08 01:22:05,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 192 transitions, 1974 flow [2025-02-08 01:22:05,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 192 transitions, 1911 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-02-08 01:22:05,263 INFO L231 Difference]: Finished difference. Result has 128 places, 125 transitions, 1463 flow [2025-02-08 01:22:05,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1463, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2025-02-08 01:22:05,265 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 107 predicate places. [2025-02-08 01:22:05,265 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 125 transitions, 1463 flow [2025-02-08 01:22:05,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:05,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:05,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:05,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 01:22:05,469 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,SelfDestructingSolverStorable10 [2025-02-08 01:22:05,469 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:05,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash 112626017, now seen corresponding path program 4 times [2025-02-08 01:22:05,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:05,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219780521] [2025-02-08 01:22:05,469 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:22:05,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:05,478 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:22:05,491 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:05,491 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:22:05,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:05,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:05,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219780521] [2025-02-08 01:22:05,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219780521] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:05,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774285688] [2025-02-08 01:22:05,591 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:22:05,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:05,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:05,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:05,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 01:22:05,632 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:22:05,645 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:05,645 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:22:05,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:05,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 01:22:05,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:05,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 01:22:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:05,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:06,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:22:06,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 127 [2025-02-08 01:22:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:06,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774285688] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:06,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:06,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 18 [2025-02-08 01:22:06,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913316356] [2025-02-08 01:22:06,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:06,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:22:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:06,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:22:06,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:22:06,484 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:06,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 125 transitions, 1463 flow. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:06,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:06,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:06,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:07,184 INFO L124 PetriNetUnfolderBase]: 401/775 cut-off events. [2025-02-08 01:22:07,186 INFO L125 PetriNetUnfolderBase]: For 5284/5284 co-relation queries the response was YES. [2025-02-08 01:22:07,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4473 conditions, 775 events. 401/775 cut-off events. For 5284/5284 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3861 event pairs, 31 based on Foata normal form. 7/782 useless extension candidates. Maximal degree in co-relation 4346. Up to 515 conditions per place. [2025-02-08 01:22:07,192 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 88 selfloop transitions, 63 changer transitions 3/155 dead transitions. [2025-02-08 01:22:07,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 155 transitions, 1915 flow [2025-02-08 01:22:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 01:22:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 01:22:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 110 transitions. [2025-02-08 01:22:07,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2025-02-08 01:22:07,194 INFO L175 Difference]: Start difference. First operand has 128 places, 125 transitions, 1463 flow. Second operand 13 states and 110 transitions. [2025-02-08 01:22:07,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 155 transitions, 1915 flow [2025-02-08 01:22:07,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 155 transitions, 1778 flow, removed 31 selfloop flow, removed 11 redundant places. [2025-02-08 01:22:07,209 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 1486 flow [2025-02-08 01:22:07,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1486, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2025-02-08 01:22:07,211 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 108 predicate places. [2025-02-08 01:22:07,212 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 1486 flow [2025-02-08 01:22:07,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:07,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:07,212 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:07,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 01:22:07,412 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,SelfDestructingSolverStorable11 [2025-02-08 01:22:07,413 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:07,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash 750690183, now seen corresponding path program 5 times [2025-02-08 01:22:07,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:07,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581200995] [2025-02-08 01:22:07,414 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:22:07,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:07,419 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:22:07,434 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:07,434 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:07,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:07,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:07,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581200995] [2025-02-08 01:22:07,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581200995] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:07,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113329096] [2025-02-08 01:22:07,567 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:22:07,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:07,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:07,570 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) [2025-02-08 01:22:07,572 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 [2025-02-08 01:22:07,616 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:22:07,630 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:22:07,630 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:07,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:07,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-08 01:22:07,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:07,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 01:22:07,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 93 [2025-02-08 01:22:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:07,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:08,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2025-02-08 01:22:08,496 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:22:08,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2025-02-08 01:22:08,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2025-02-08 01:22:08,551 INFO L349 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2025-02-08 01:22:08,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 216 treesize of output 164 [2025-02-08 01:22:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:08,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113329096] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:08,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:08,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 19 [2025-02-08 01:22:08,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041702679] [2025-02-08 01:22:08,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:08,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:22:08,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:08,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:22:08,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:22:08,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:08,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 1486 flow. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:08,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:08,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:08,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:10,341 INFO L124 PetriNetUnfolderBase]: 475/969 cut-off events. [2025-02-08 01:22:10,341 INFO L125 PetriNetUnfolderBase]: For 6530/6530 co-relation queries the response was YES. [2025-02-08 01:22:10,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5516 conditions, 969 events. 475/969 cut-off events. For 6530/6530 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5481 event pairs, 31 based on Foata normal form. 9/978 useless extension candidates. Maximal degree in co-relation 5244. Up to 454 conditions per place. [2025-02-08 01:22:10,349 INFO L140 encePairwiseOnDemand]: 9/20 looper letters, 130 selfloop transitions, 94 changer transitions 26/251 dead transitions. [2025-02-08 01:22:10,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 251 transitions, 2857 flow [2025-02-08 01:22:10,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 01:22:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-08 01:22:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 235 transitions. [2025-02-08 01:22:10,351 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2025-02-08 01:22:10,351 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 1486 flow. Second operand 27 states and 235 transitions. [2025-02-08 01:22:10,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 251 transitions, 2857 flow [2025-02-08 01:22:10,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 251 transitions, 2802 flow, removed 11 selfloop flow, removed 4 redundant places. [2025-02-08 01:22:10,371 INFO L231 Difference]: Finished difference. Result has 156 places, 158 transitions, 2038 flow [2025-02-08 01:22:10,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2038, PETRI_PLACES=156, PETRI_TRANSITIONS=158} [2025-02-08 01:22:10,372 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 135 predicate places. [2025-02-08 01:22:10,373 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 158 transitions, 2038 flow [2025-02-08 01:22:10,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:10,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:10,373 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:10,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 01:22:10,573 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,SelfDestructingSolverStorable12 [2025-02-08 01:22:10,574 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:10,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash -53482210, now seen corresponding path program 2 times [2025-02-08 01:22:10,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:10,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718711294] [2025-02-08 01:22:10,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:22:10,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:10,580 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:10,599 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:10,599 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:10,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:10,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:10,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718711294] [2025-02-08 01:22:10,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718711294] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:10,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146576292] [2025-02-08 01:22:10,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:22:10,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:10,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:10,684 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) [2025-02-08 01:22:10,685 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 [2025-02-08 01:22:10,731 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:10,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:10,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:10,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:10,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:22:10,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:10,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:10,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146576292] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:10,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:10,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-08 01:22:10,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998638853] [2025-02-08 01:22:10,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:10,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:22:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:10,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:22:10,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:22:10,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:10,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 158 transitions, 2038 flow. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:10,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:10,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:10,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:11,317 INFO L124 PetriNetUnfolderBase]: 478/981 cut-off events. [2025-02-08 01:22:11,317 INFO L125 PetriNetUnfolderBase]: For 8416/8416 co-relation queries the response was YES. [2025-02-08 01:22:11,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6054 conditions, 981 events. 478/981 cut-off events. For 8416/8416 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5595 event pairs, 87 based on Foata normal form. 12/993 useless extension candidates. Maximal degree in co-relation 5817. Up to 303 conditions per place. [2025-02-08 01:22:11,324 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 128 selfloop transitions, 95 changer transitions 1/225 dead transitions. [2025-02-08 01:22:11,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 225 transitions, 2982 flow [2025-02-08 01:22:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 01:22:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 01:22:11,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 133 transitions. [2025-02-08 01:22:11,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.415625 [2025-02-08 01:22:11,329 INFO L175 Difference]: Start difference. First operand has 156 places, 158 transitions, 2038 flow. Second operand 16 states and 133 transitions. [2025-02-08 01:22:11,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 225 transitions, 2982 flow [2025-02-08 01:22:11,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 225 transitions, 2802 flow, removed 5 selfloop flow, removed 12 redundant places. [2025-02-08 01:22:11,353 INFO L231 Difference]: Finished difference. Result has 163 places, 176 transitions, 2278 flow [2025-02-08 01:22:11,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2278, PETRI_PLACES=163, PETRI_TRANSITIONS=176} [2025-02-08 01:22:11,353 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 142 predicate places. [2025-02-08 01:22:11,353 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 176 transitions, 2278 flow [2025-02-08 01:22:11,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:11,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:11,354 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:11,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 01:22:11,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:11,554 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:11,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash 533438005, now seen corresponding path program 6 times [2025-02-08 01:22:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086209860] [2025-02-08 01:22:11,555 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:22:11,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:11,566 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:11,584 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:11,588 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:22:11,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086209860] [2025-02-08 01:22:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086209860] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:11,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095826227] [2025-02-08 01:22:11,833 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:22:11,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:11,834 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) [2025-02-08 01:22:11,836 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 [2025-02-08 01:22:11,875 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:11,954 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:11,954 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:22:11,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:11,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 01:22:11,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:11,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-08 01:22:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:12,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:12,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 77 [2025-02-08 01:22:12,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:22:12,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 204 treesize of output 188 [2025-02-08 01:22:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:13,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095826227] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:13,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:13,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2025-02-08 01:22:13,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178376053] [2025-02-08 01:22:13,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:13,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 01:22:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:13,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 01:22:13,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2025-02-08 01:22:13,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:13,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 176 transitions, 2278 flow. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:13,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:13,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:13,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:14,258 INFO L124 PetriNetUnfolderBase]: 478/973 cut-off events. [2025-02-08 01:22:14,258 INFO L125 PetriNetUnfolderBase]: For 8053/8053 co-relation queries the response was YES. [2025-02-08 01:22:14,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6151 conditions, 973 events. 478/973 cut-off events. For 8053/8053 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5451 event pairs, 70 based on Foata normal form. 4/977 useless extension candidates. Maximal degree in co-relation 5931. Up to 569 conditions per place. [2025-02-08 01:22:14,265 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 121 selfloop transitions, 15 changer transitions 82/219 dead transitions. [2025-02-08 01:22:14,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 219 transitions, 3027 flow [2025-02-08 01:22:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 01:22:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 01:22:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 107 transitions. [2025-02-08 01:22:14,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2025-02-08 01:22:14,266 INFO L175 Difference]: Start difference. First operand has 163 places, 176 transitions, 2278 flow. Second operand 12 states and 107 transitions. [2025-02-08 01:22:14,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 219 transitions, 3027 flow [2025-02-08 01:22:14,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 219 transitions, 2918 flow, removed 28 selfloop flow, removed 4 redundant places. [2025-02-08 01:22:14,294 INFO L231 Difference]: Finished difference. Result has 172 places, 132 transitions, 1607 flow [2025-02-08 01:22:14,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1607, PETRI_PLACES=172, PETRI_TRANSITIONS=132} [2025-02-08 01:22:14,294 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 151 predicate places. [2025-02-08 01:22:14,295 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 132 transitions, 1607 flow [2025-02-08 01:22:14,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:14,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:14,295 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:14,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 01:22:14,499 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 [2025-02-08 01:22:14,499 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:14,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:14,499 INFO L85 PathProgramCache]: Analyzing trace with hash 435611956, now seen corresponding path program 7 times [2025-02-08 01:22:14,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:14,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819328030] [2025-02-08 01:22:14,499 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:22:14,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:14,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:22:14,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:14,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:14,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:14,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:14,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819328030] [2025-02-08 01:22:14,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819328030] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:14,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105698077] [2025-02-08 01:22:14,604 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:22:14,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:14,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:14,610 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) [2025-02-08 01:22:14,617 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 [2025-02-08 01:22:14,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:22:14,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:14,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:14,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:14,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-08 01:22:14,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:14,987 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:22:14,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 39 [2025-02-08 01:22:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:15,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:15,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:22:15,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 154 [2025-02-08 01:22:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:16,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105698077] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:16,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:16,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 18 [2025-02-08 01:22:16,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695416796] [2025-02-08 01:22:16,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:16,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:22:16,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:16,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:22:16,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:22:16,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:16,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 132 transitions, 1607 flow. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:16,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:16,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:16,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:16,585 INFO L124 PetriNetUnfolderBase]: 355/718 cut-off events. [2025-02-08 01:22:16,586 INFO L125 PetriNetUnfolderBase]: For 5527/5527 co-relation queries the response was YES. [2025-02-08 01:22:16,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4428 conditions, 718 events. 355/718 cut-off events. For 5527/5527 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3720 event pairs, 3 based on Foata normal form. 3/721 useless extension candidates. Maximal degree in co-relation 4347. Up to 373 conditions per place. [2025-02-08 01:22:16,591 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 113 selfloop transitions, 73 changer transitions 7/194 dead transitions. [2025-02-08 01:22:16,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 194 transitions, 2539 flow [2025-02-08 01:22:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 01:22:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 01:22:16,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 125 transitions. [2025-02-08 01:22:16,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-02-08 01:22:16,592 INFO L175 Difference]: Start difference. First operand has 172 places, 132 transitions, 1607 flow. Second operand 15 states and 125 transitions. [2025-02-08 01:22:16,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 194 transitions, 2539 flow [2025-02-08 01:22:16,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 194 transitions, 2405 flow, removed 29 selfloop flow, removed 13 redundant places. [2025-02-08 01:22:16,608 INFO L231 Difference]: Finished difference. Result has 156 places, 152 transitions, 1999 flow [2025-02-08 01:22:16,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1999, PETRI_PLACES=156, PETRI_TRANSITIONS=152} [2025-02-08 01:22:16,609 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 135 predicate places. [2025-02-08 01:22:16,609 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 152 transitions, 1999 flow [2025-02-08 01:22:16,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:16,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:16,610 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:16,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 01:22:16,810 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 [2025-02-08 01:22:16,810 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:16,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:16,811 INFO L85 PathProgramCache]: Analyzing trace with hash -101852078, now seen corresponding path program 3 times [2025-02-08 01:22:16,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:16,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304160402] [2025-02-08 01:22:16,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:16,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:16,817 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:16,830 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:16,833 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:22:16,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:16,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:16,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304160402] [2025-02-08 01:22:16,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304160402] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:16,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785269459] [2025-02-08 01:22:16,936 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:16,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:16,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:16,937 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) [2025-02-08 01:22:16,939 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 [2025-02-08 01:22:16,981 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:17,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:17,040 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:22:17,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:17,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:22:17,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:17,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:17,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785269459] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:17,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:17,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-08 01:22:17,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403419521] [2025-02-08 01:22:17,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:17,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:22:17,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:17,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:22:17,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:22:17,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:17,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 152 transitions, 1999 flow. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:17,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:17,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:17,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:21,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-08 01:22:21,643 INFO L124 PetriNetUnfolderBase]: 363/739 cut-off events. [2025-02-08 01:22:21,644 INFO L125 PetriNetUnfolderBase]: For 6487/6487 co-relation queries the response was YES. [2025-02-08 01:22:21,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4869 conditions, 739 events. 363/739 cut-off events. For 6487/6487 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3923 event pairs, 45 based on Foata normal form. 15/754 useless extension candidates. Maximal degree in co-relation 4790. Up to 187 conditions per place. [2025-02-08 01:22:21,649 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 120 selfloop transitions, 90 changer transitions 0/211 dead transitions. [2025-02-08 01:22:21,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 211 transitions, 2864 flow [2025-02-08 01:22:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 01:22:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 01:22:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 151 transitions. [2025-02-08 01:22:21,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4441176470588235 [2025-02-08 01:22:21,651 INFO L175 Difference]: Start difference. First operand has 156 places, 152 transitions, 1999 flow. Second operand 17 states and 151 transitions. [2025-02-08 01:22:21,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 211 transitions, 2864 flow [2025-02-08 01:22:21,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 211 transitions, 2714 flow, removed 54 selfloop flow, removed 12 redundant places. [2025-02-08 01:22:21,672 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 2278 flow [2025-02-08 01:22:21,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2278, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2025-02-08 01:22:21,672 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 144 predicate places. [2025-02-08 01:22:21,672 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 2278 flow [2025-02-08 01:22:21,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:21,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:21,673 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:21,680 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 [2025-02-08 01:22:21,873 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 [2025-02-08 01:22:21,874 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:21,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2014135194, now seen corresponding path program 4 times [2025-02-08 01:22:21,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:21,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848613346] [2025-02-08 01:22:21,874 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:22:21,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:21,878 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:21,884 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:21,884 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:22:21,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:21,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:21,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848613346] [2025-02-08 01:22:21,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848613346] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:21,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129394270] [2025-02-08 01:22:21,979 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:22:21,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:21,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:21,981 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) [2025-02-08 01:22:21,986 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 [2025-02-08 01:22:22,028 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:22,058 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:22,058 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:22:22,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:22,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:22:22,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:22,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129394270] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:22,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-08 01:22:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342884394] [2025-02-08 01:22:22,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:22,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:22:22,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:22,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:22:22,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:22:22,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:22,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 2278 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:22,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:22,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:22,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:23,049 INFO L124 PetriNetUnfolderBase]: 413/850 cut-off events. [2025-02-08 01:22:23,049 INFO L125 PetriNetUnfolderBase]: For 7818/7818 co-relation queries the response was YES. [2025-02-08 01:22:23,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5796 conditions, 850 events. 413/850 cut-off events. For 7818/7818 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4729 event pairs, 70 based on Foata normal form. 18/868 useless extension candidates. Maximal degree in co-relation 5718. Up to 308 conditions per place. [2025-02-08 01:22:23,055 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 145 selfloop transitions, 98 changer transitions 0/244 dead transitions. [2025-02-08 01:22:23,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 244 transitions, 3490 flow [2025-02-08 01:22:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 01:22:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 01:22:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 174 transitions. [2025-02-08 01:22:23,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2025-02-08 01:22:23,056 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 2278 flow. Second operand 19 states and 174 transitions. [2025-02-08 01:22:23,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 244 transitions, 3490 flow [2025-02-08 01:22:23,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 244 transitions, 3296 flow, removed 68 selfloop flow, removed 6 redundant places. [2025-02-08 01:22:23,084 INFO L231 Difference]: Finished difference. Result has 182 places, 185 transitions, 2801 flow [2025-02-08 01:22:23,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2801, PETRI_PLACES=182, PETRI_TRANSITIONS=185} [2025-02-08 01:22:23,084 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 161 predicate places. [2025-02-08 01:22:23,084 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 185 transitions, 2801 flow [2025-02-08 01:22:23,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:23,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:23,085 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:23,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 01:22:23,285 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 [2025-02-08 01:22:23,286 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:23,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:23,286 INFO L85 PathProgramCache]: Analyzing trace with hash -548308240, now seen corresponding path program 5 times [2025-02-08 01:22:23,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:23,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219825566] [2025-02-08 01:22:23,286 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:22:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:23,294 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:23,306 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:23,306 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:23,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219825566] [2025-02-08 01:22:23,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219825566] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:23,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487938916] [2025-02-08 01:22:23,408 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:22:23,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:23,411 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) [2025-02-08 01:22:23,417 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 [2025-02-08 01:22:23,461 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:23,500 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:23,500 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:23,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:23,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:22:23,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:23,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487938916] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:23,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:23,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-08 01:22:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127632007] [2025-02-08 01:22:23,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:23,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:22:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:23,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:22:23,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:22:23,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:23,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 185 transitions, 2801 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:23,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:23,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:23,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:24,205 INFO L124 PetriNetUnfolderBase]: 606/1245 cut-off events. [2025-02-08 01:22:24,205 INFO L125 PetriNetUnfolderBase]: For 14441/14441 co-relation queries the response was YES. [2025-02-08 01:22:24,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8854 conditions, 1245 events. 606/1245 cut-off events. For 14441/14441 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7514 event pairs, 38 based on Foata normal form. 6/1251 useless extension candidates. Maximal degree in co-relation 8771. Up to 365 conditions per place. [2025-02-08 01:22:24,221 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 184 selfloop transitions, 155 changer transitions 0/340 dead transitions. [2025-02-08 01:22:24,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 340 transitions, 5504 flow [2025-02-08 01:22:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 01:22:24,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 01:22:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 178 transitions. [2025-02-08 01:22:24,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2025-02-08 01:22:24,223 INFO L175 Difference]: Start difference. First operand has 182 places, 185 transitions, 2801 flow. Second operand 19 states and 178 transitions. [2025-02-08 01:22:24,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 340 transitions, 5504 flow [2025-02-08 01:22:24,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 340 transitions, 5190 flow, removed 134 selfloop flow, removed 8 redundant places. [2025-02-08 01:22:24,273 INFO L231 Difference]: Finished difference. Result has 203 places, 252 transitions, 4370 flow [2025-02-08 01:22:24,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4370, PETRI_PLACES=203, PETRI_TRANSITIONS=252} [2025-02-08 01:22:24,274 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 182 predicate places. [2025-02-08 01:22:24,274 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 252 transitions, 4370 flow [2025-02-08 01:22:24,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:24,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:24,274 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:24,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 01:22:24,474 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 [2025-02-08 01:22:24,475 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:24,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash -548902886, now seen corresponding path program 6 times [2025-02-08 01:22:24,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:24,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376732273] [2025-02-08 01:22:24,476 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:22:24,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:24,480 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:24,491 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:24,491 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:22:24,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:24,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:24,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376732273] [2025-02-08 01:22:24,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376732273] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:24,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579460720] [2025-02-08 01:22:24,551 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:22:24,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:24,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:24,555 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) [2025-02-08 01:22:24,556 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 [2025-02-08 01:22:24,600 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:24,630 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:24,630 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:22:24,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:24,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:22:24,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:24,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:24,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579460720] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:24,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:24,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-08 01:22:24,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801085153] [2025-02-08 01:22:24,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:24,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:22:24,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:24,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:22:24,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:22:24,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:24,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 252 transitions, 4370 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:24,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:24,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:24,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:25,336 INFO L124 PetriNetUnfolderBase]: 604/1227 cut-off events. [2025-02-08 01:22:25,337 INFO L125 PetriNetUnfolderBase]: For 15959/15959 co-relation queries the response was YES. [2025-02-08 01:22:25,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9292 conditions, 1227 events. 604/1227 cut-off events. For 15959/15959 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7261 event pairs, 33 based on Foata normal form. 8/1235 useless extension candidates. Maximal degree in co-relation 9199. Up to 403 conditions per place. [2025-02-08 01:22:25,346 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 171 selfloop transitions, 150 changer transitions 0/322 dead transitions. [2025-02-08 01:22:25,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 322 transitions, 5776 flow [2025-02-08 01:22:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 01:22:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 01:22:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 153 transitions. [2025-02-08 01:22:25,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-08 01:22:25,347 INFO L175 Difference]: Start difference. First operand has 203 places, 252 transitions, 4370 flow. Second operand 17 states and 153 transitions. [2025-02-08 01:22:25,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 322 transitions, 5776 flow [2025-02-08 01:22:25,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 322 transitions, 5232 flow, removed 219 selfloop flow, removed 7 redundant places. [2025-02-08 01:22:25,411 INFO L231 Difference]: Finished difference. Result has 216 places, 260 transitions, 4365 flow [2025-02-08 01:22:25,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4365, PETRI_PLACES=216, PETRI_TRANSITIONS=260} [2025-02-08 01:22:25,411 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 195 predicate places. [2025-02-08 01:22:25,411 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 260 transitions, 4365 flow [2025-02-08 01:22:25,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:25,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:25,412 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:25,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 01:22:25,616 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 [2025-02-08 01:22:25,616 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:25,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 325432440, now seen corresponding path program 7 times [2025-02-08 01:22:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:25,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196864208] [2025-02-08 01:22:25,616 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:22:25,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:25,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:22:25,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:25,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:25,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:25,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:25,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196864208] [2025-02-08 01:22:25,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196864208] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:25,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149214054] [2025-02-08 01:22:25,730 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:22:25,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:25,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:25,732 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) [2025-02-08 01:22:25,735 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 [2025-02-08 01:22:25,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:22:25,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:25,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:22:25,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:25,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:22:25,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:25,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:25,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149214054] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:25,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:25,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-08 01:22:25,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144181660] [2025-02-08 01:22:25,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:25,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:22:25,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:25,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:22:25,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:22:25,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:25,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 260 transitions, 4365 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:25,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:25,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:25,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:26,340 INFO L124 PetriNetUnfolderBase]: 674/1356 cut-off events. [2025-02-08 01:22:26,340 INFO L125 PetriNetUnfolderBase]: For 15563/15563 co-relation queries the response was YES. [2025-02-08 01:22:26,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9904 conditions, 1356 events. 674/1356 cut-off events. For 15563/15563 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8127 event pairs, 144 based on Foata normal form. 10/1366 useless extension candidates. Maximal degree in co-relation 9808. Up to 786 conditions per place. [2025-02-08 01:22:26,350 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 201 selfloop transitions, 130 changer transitions 0/332 dead transitions. [2025-02-08 01:22:26,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 332 transitions, 5880 flow [2025-02-08 01:22:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 01:22:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 01:22:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2025-02-08 01:22:26,351 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2025-02-08 01:22:26,351 INFO L175 Difference]: Start difference. First operand has 216 places, 260 transitions, 4365 flow. Second operand 13 states and 122 transitions. [2025-02-08 01:22:26,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 332 transitions, 5880 flow [2025-02-08 01:22:26,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 332 transitions, 5536 flow, removed 135 selfloop flow, removed 7 redundant places. [2025-02-08 01:22:26,412 INFO L231 Difference]: Finished difference. Result has 227 places, 291 transitions, 5026 flow [2025-02-08 01:22:26,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4097, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5026, PETRI_PLACES=227, PETRI_TRANSITIONS=291} [2025-02-08 01:22:26,412 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 206 predicate places. [2025-02-08 01:22:26,413 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 291 transitions, 5026 flow [2025-02-08 01:22:26,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:26,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:26,413 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:26,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 01:22:26,613 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 [2025-02-08 01:22:26,614 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:26,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2132255416, now seen corresponding path program 8 times [2025-02-08 01:22:26,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:26,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453798736] [2025-02-08 01:22:26,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:22:26,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:26,619 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:26,625 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:26,625 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:26,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:26,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:26,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453798736] [2025-02-08 01:22:26,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453798736] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401183370] [2025-02-08 01:22:26,685 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:22:26,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:26,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:26,692 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) [2025-02-08 01:22:26,693 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 [2025-02-08 01:22:26,739 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:26,784 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:26,784 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:26,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:26,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:22:26,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:26,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:26,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401183370] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:26,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-08 01:22:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852809390] [2025-02-08 01:22:26,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:26,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:22:26,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:26,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:22:26,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:22:26,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:26,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 291 transitions, 5026 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:26,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:26,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:26,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:27,447 INFO L124 PetriNetUnfolderBase]: 686/1379 cut-off events. [2025-02-08 01:22:27,448 INFO L125 PetriNetUnfolderBase]: For 16737/16737 co-relation queries the response was YES. [2025-02-08 01:22:27,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10222 conditions, 1379 events. 686/1379 cut-off events. For 16737/16737 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8322 event pairs, 100 based on Foata normal form. 21/1400 useless extension candidates. Maximal degree in co-relation 10120. Up to 528 conditions per place. [2025-02-08 01:22:27,458 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 193 selfloop transitions, 150 changer transitions 0/344 dead transitions. [2025-02-08 01:22:27,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 344 transitions, 6221 flow [2025-02-08 01:22:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 01:22:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 01:22:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 132 transitions. [2025-02-08 01:22:27,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4125 [2025-02-08 01:22:27,463 INFO L175 Difference]: Start difference. First operand has 227 places, 291 transitions, 5026 flow. Second operand 16 states and 132 transitions. [2025-02-08 01:22:27,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 344 transitions, 6221 flow [2025-02-08 01:22:27,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 344 transitions, 6000 flow, removed 65 selfloop flow, removed 7 redundant places. [2025-02-08 01:22:27,542 INFO L231 Difference]: Finished difference. Result has 237 places, 304 transitions, 5364 flow [2025-02-08 01:22:27,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5364, PETRI_PLACES=237, PETRI_TRANSITIONS=304} [2025-02-08 01:22:27,543 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 216 predicate places. [2025-02-08 01:22:27,543 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 304 transitions, 5364 flow [2025-02-08 01:22:27,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:27,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:27,544 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:27,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 01:22:27,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:27,745 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:27,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash 219972300, now seen corresponding path program 9 times [2025-02-08 01:22:27,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:27,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525536319] [2025-02-08 01:22:27,745 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:27,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:27,749 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:27,755 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:27,755 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:22:27,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:27,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:27,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525536319] [2025-02-08 01:22:27,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525536319] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:27,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056713147] [2025-02-08 01:22:27,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:27,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:27,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:27,895 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:27,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 01:22:27,943 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:27,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:27,988 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:22:27,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:27,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:22:27,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:28,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:28,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056713147] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:28,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:28,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-08 01:22:28,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613452784] [2025-02-08 01:22:28,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:28,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:22:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:28,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:22:28,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:22:28,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:28,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 304 transitions, 5364 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:28,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:28,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:28,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:29,020 INFO L124 PetriNetUnfolderBase]: 669/1338 cut-off events. [2025-02-08 01:22:29,021 INFO L125 PetriNetUnfolderBase]: For 16636/16636 co-relation queries the response was YES. [2025-02-08 01:22:29,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10185 conditions, 1338 events. 669/1338 cut-off events. For 16636/16636 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7980 event pairs, 143 based on Foata normal form. 21/1359 useless extension candidates. Maximal degree in co-relation 10083. Up to 792 conditions per place. [2025-02-08 01:22:29,030 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 202 selfloop transitions, 138 changer transitions 0/341 dead transitions. [2025-02-08 01:22:29,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 341 transitions, 6248 flow [2025-02-08 01:22:29,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 01:22:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 01:22:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 141 transitions. [2025-02-08 01:22:29,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4147058823529412 [2025-02-08 01:22:29,032 INFO L175 Difference]: Start difference. First operand has 237 places, 304 transitions, 5364 flow. Second operand 17 states and 141 transitions. [2025-02-08 01:22:29,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 341 transitions, 6248 flow [2025-02-08 01:22:29,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 341 transitions, 6058 flow, removed 37 selfloop flow, removed 6 redundant places. [2025-02-08 01:22:29,103 INFO L231 Difference]: Finished difference. Result has 250 places, 302 transitions, 5474 flow [2025-02-08 01:22:29,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5068, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5474, PETRI_PLACES=250, PETRI_TRANSITIONS=302} [2025-02-08 01:22:29,103 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 229 predicate places. [2025-02-08 01:22:29,103 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 302 transitions, 5474 flow [2025-02-08 01:22:29,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:29,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:29,104 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:29,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-08 01:22:29,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:29,305 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:29,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:29,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1127048668, now seen corresponding path program 8 times [2025-02-08 01:22:29,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:29,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593997986] [2025-02-08 01:22:29,305 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:22:29,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:29,310 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:29,318 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:29,318 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:29,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:29,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:29,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593997986] [2025-02-08 01:22:29,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593997986] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:29,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892439318] [2025-02-08 01:22:29,407 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:22:29,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:29,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:29,409 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:29,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 01:22:29,459 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-08 01:22:29,478 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:22:29,478 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:29,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:29,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 01:22:29,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:29,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:29,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892439318] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:29,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:29,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-08 01:22:29,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949974411] [2025-02-08 01:22:29,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:29,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:22:29,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:29,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:22:29,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:22:29,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:29,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 302 transitions, 5474 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:29,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:29,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:29,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:29,868 INFO L124 PetriNetUnfolderBase]: 669/1334 cut-off events. [2025-02-08 01:22:29,868 INFO L125 PetriNetUnfolderBase]: For 16754/16754 co-relation queries the response was YES. [2025-02-08 01:22:29,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10339 conditions, 1334 events. 669/1334 cut-off events. For 16754/16754 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7916 event pairs, 174 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 10234. Up to 917 conditions per place. [2025-02-08 01:22:29,878 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 222 selfloop transitions, 101 changer transitions 0/324 dead transitions. [2025-02-08 01:22:29,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 324 transitions, 6296 flow [2025-02-08 01:22:29,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:22:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:22:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 83 transitions. [2025-02-08 01:22:29,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.415 [2025-02-08 01:22:29,879 INFO L175 Difference]: Start difference. First operand has 250 places, 302 transitions, 5474 flow. Second operand 10 states and 83 transitions. [2025-02-08 01:22:29,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 324 transitions, 6296 flow [2025-02-08 01:22:29,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 324 transitions, 6097 flow, removed 25 selfloop flow, removed 10 redundant places. [2025-02-08 01:22:29,956 INFO L231 Difference]: Finished difference. Result has 251 places, 304 transitions, 5528 flow [2025-02-08 01:22:29,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5275, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5528, PETRI_PLACES=251, PETRI_TRANSITIONS=304} [2025-02-08 01:22:29,956 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 230 predicate places. [2025-02-08 01:22:29,956 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 304 transitions, 5528 flow [2025-02-08 01:22:29,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:29,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:29,957 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:29,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-08 01:22:30,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:30,158 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:30,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:30,158 INFO L85 PathProgramCache]: Analyzing trace with hash -520694512, now seen corresponding path program 9 times [2025-02-08 01:22:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:30,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898883062] [2025-02-08 01:22:30,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:30,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:30,163 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:22:30,181 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:22:30,181 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:22:30,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:30,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898883062] [2025-02-08 01:22:30,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898883062] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127418759] [2025-02-08 01:22:30,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:22:30,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:30,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:30,362 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:30,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 01:22:30,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:22:30,454 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:22:30,454 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:22:30,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:30,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-08 01:22:30,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:30,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 01:22:30,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:22:30,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2025-02-08 01:22:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:30,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:32,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 124 [2025-02-08 01:22:32,157 INFO L349 Elim1Store]: treesize reduction 5, result has 95.2 percent of original size [2025-02-08 01:22:32,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 452 treesize of output 369 [2025-02-08 01:22:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:34,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127418759] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:34,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:34,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 25 [2025-02-08 01:22:34,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916639278] [2025-02-08 01:22:34,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:34,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 01:22:34,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:34,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 01:22:34,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2025-02-08 01:22:34,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:34,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 304 transitions, 5528 flow. Second operand has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:34,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:34,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:34,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:38,467 INFO L124 PetriNetUnfolderBase]: 951/1847 cut-off events. [2025-02-08 01:22:38,468 INFO L125 PetriNetUnfolderBase]: For 22887/22887 co-relation queries the response was YES. [2025-02-08 01:22:38,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14889 conditions, 1847 events. 951/1847 cut-off events. For 22887/22887 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11532 event pairs, 2 based on Foata normal form. 4/1851 useless extension candidates. Maximal degree in co-relation 14694. Up to 1034 conditions per place. [2025-02-08 01:22:38,485 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 275 selfloop transitions, 257 changer transitions 7/540 dead transitions. [2025-02-08 01:22:38,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 540 transitions, 9872 flow [2025-02-08 01:22:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-08 01:22:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-02-08 01:22:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 345 transitions. [2025-02-08 01:22:38,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4011627906976744 [2025-02-08 01:22:38,490 INFO L175 Difference]: Start difference. First operand has 251 places, 304 transitions, 5528 flow. Second operand 43 states and 345 transitions. [2025-02-08 01:22:38,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 540 transitions, 9872 flow [2025-02-08 01:22:38,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 540 transitions, 9634 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-08 01:22:38,635 INFO L231 Difference]: Finished difference. Result has 297 places, 448 transitions, 9154 flow [2025-02-08 01:22:38,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5393, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=9154, PETRI_PLACES=297, PETRI_TRANSITIONS=448} [2025-02-08 01:22:38,636 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 276 predicate places. [2025-02-08 01:22:38,636 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 448 transitions, 9154 flow [2025-02-08 01:22:38,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:38,636 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:38,637 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:38,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 01:22:38,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-08 01:22:38,841 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:38,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1637387244, now seen corresponding path program 10 times [2025-02-08 01:22:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:38,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338660011] [2025-02-08 01:22:38,844 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:22:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:38,849 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:22:38,867 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:22:38,868 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:22:38,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338660011] [2025-02-08 01:22:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338660011] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355795419] [2025-02-08 01:22:39,557 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:22:39,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:39,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:39,559 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:39,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 01:22:39,609 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:22:39,644 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:22:39,644 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:22:39,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:39,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:22:39,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:39,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:22:39,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-02-08 01:22:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:39,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:40,695 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-02-08 01:22:40,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 77 [2025-02-08 01:22:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:40,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355795419] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:40,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:40,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 21 [2025-02-08 01:22:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833850799] [2025-02-08 01:22:40,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:40,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 01:22:40,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:40,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 01:22:40,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2025-02-08 01:22:40,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:40,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 448 transitions, 9154 flow. Second operand has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 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) [2025-02-08 01:22:40,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:40,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:40,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:49,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-08 01:22:50,052 INFO L124 PetriNetUnfolderBase]: 1112/2157 cut-off events. [2025-02-08 01:22:50,052 INFO L125 PetriNetUnfolderBase]: For 34520/34520 co-relation queries the response was YES. [2025-02-08 01:22:50,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18657 conditions, 2157 events. 1112/2157 cut-off events. For 34520/34520 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 13916 event pairs, 10 based on Foata normal form. 3/2160 useless extension candidates. Maximal degree in co-relation 18415. Up to 571 conditions per place. [2025-02-08 01:22:50,072 INFO L140 encePairwiseOnDemand]: 9/20 looper letters, 174 selfloop transitions, 431 changer transitions 8/614 dead transitions. [2025-02-08 01:22:50,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 614 transitions, 12276 flow [2025-02-08 01:22:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 01:22:50,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-08 01:22:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 317 transitions. [2025-02-08 01:22:50,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4283783783783784 [2025-02-08 01:22:50,075 INFO L175 Difference]: Start difference. First operand has 297 places, 448 transitions, 9154 flow. Second operand 37 states and 317 transitions. [2025-02-08 01:22:50,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 614 transitions, 12276 flow [2025-02-08 01:22:50,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 614 transitions, 11781 flow, removed 144 selfloop flow, removed 15 redundant places. [2025-02-08 01:22:50,288 INFO L231 Difference]: Finished difference. Result has 328 places, 526 transitions, 11688 flow [2025-02-08 01:22:50,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8714, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=11688, PETRI_PLACES=328, PETRI_TRANSITIONS=526} [2025-02-08 01:22:50,289 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 307 predicate places. [2025-02-08 01:22:50,289 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 526 transitions, 11688 flow [2025-02-08 01:22:50,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.090909090909091) internal successors, (112), 22 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) [2025-02-08 01:22:50,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:50,290 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:50,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 01:22:50,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:50,490 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:50,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash 178436130, now seen corresponding path program 10 times [2025-02-08 01:22:50,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213867399] [2025-02-08 01:22:50,491 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:22:50,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:50,496 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:22:50,501 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:22:50,501 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:22:50,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:50,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:50,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213867399] [2025-02-08 01:22:50,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213867399] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:50,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037779951] [2025-02-08 01:22:50,619 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:22:50,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:50,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:50,621 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:50,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 01:22:50,672 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:22:50,717 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:22:50,717 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:22:50,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:50,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 01:22:50,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:50,770 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:50,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037779951] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:50,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:50,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-02-08 01:22:50,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007143530] [2025-02-08 01:22:50,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:50,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 01:22:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:50,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 01:22:50,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-08 01:22:50,896 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:50,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 526 transitions, 11688 flow. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:50,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:50,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:50,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:53,595 INFO L124 PetriNetUnfolderBase]: 1219/2358 cut-off events. [2025-02-08 01:22:53,596 INFO L125 PetriNetUnfolderBase]: For 43475/43475 co-relation queries the response was YES. [2025-02-08 01:22:53,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21869 conditions, 2358 events. 1219/2358 cut-off events. For 43475/43475 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 15419 event pairs, 166 based on Foata normal form. 18/2376 useless extension candidates. Maximal degree in co-relation 21648. Up to 873 conditions per place. [2025-02-08 01:22:53,616 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 376 selfloop transitions, 266 changer transitions 0/643 dead transitions. [2025-02-08 01:22:53,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 643 transitions, 14627 flow [2025-02-08 01:22:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 01:22:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 01:22:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 195 transitions. [2025-02-08 01:22:53,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-02-08 01:22:53,617 INFO L175 Difference]: Start difference. First operand has 328 places, 526 transitions, 11688 flow. Second operand 21 states and 195 transitions. [2025-02-08 01:22:53,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 643 transitions, 14627 flow [2025-02-08 01:22:53,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 643 transitions, 13782 flow, removed 301 selfloop flow, removed 18 redundant places. [2025-02-08 01:22:53,981 INFO L231 Difference]: Finished difference. Result has 337 places, 575 transitions, 12708 flow [2025-02-08 01:22:53,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=10913, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=12708, PETRI_PLACES=337, PETRI_TRANSITIONS=575} [2025-02-08 01:22:53,982 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 316 predicate places. [2025-02-08 01:22:53,982 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 575 transitions, 12708 flow [2025-02-08 01:22:53,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:22:53,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:53,983 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:53,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 01:22:54,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-08 01:22:54,187 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:22:54,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:22:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1298568356, now seen corresponding path program 11 times [2025-02-08 01:22:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:22:54,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146941270] [2025-02-08 01:22:54,188 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:22:54,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:22:54,193 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:22:54,211 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:22:54,211 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:54,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:22:54,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:22:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146941270] [2025-02-08 01:22:54,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146941270] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:22:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164526488] [2025-02-08 01:22:54,964 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:22:54,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:22:54,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:22:54,966 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:22:54,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 01:22:55,016 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:22:55,059 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:22:55,060 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:22:55,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:22:55,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 01:22:55,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:22:55,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:22:55,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 23 [2025-02-08 01:22:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:22:55,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:22:56,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:22:56,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 193 treesize of output 186 [2025-02-08 01:22:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:22:57,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164526488] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:22:57,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:22:57,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 22 [2025-02-08 01:22:57,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130675664] [2025-02-08 01:22:57,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:22:57,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 01:22:57,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:22:57,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 01:22:57,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2025-02-08 01:22:57,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:22:57,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 575 transitions, 12708 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) [2025-02-08 01:22:57,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:22:57,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:22:57,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:22:59,582 INFO L124 PetriNetUnfolderBase]: 1240/2406 cut-off events. [2025-02-08 01:22:59,582 INFO L125 PetriNetUnfolderBase]: For 39899/39899 co-relation queries the response was YES. [2025-02-08 01:22:59,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21854 conditions, 2406 events. 1240/2406 cut-off events. For 39899/39899 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 15795 event pairs, 10 based on Foata normal form. 2/2408 useless extension candidates. Maximal degree in co-relation 21643. Up to 1629 conditions per place. [2025-02-08 01:22:59,609 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 400 selfloop transitions, 226 changer transitions 15/642 dead transitions. [2025-02-08 01:22:59,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 642 transitions, 14449 flow [2025-02-08 01:22:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-08 01:22:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-02-08 01:22:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 233 transitions. [2025-02-08 01:22:59,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3758064516129032 [2025-02-08 01:22:59,611 INFO L175 Difference]: Start difference. First operand has 337 places, 575 transitions, 12708 flow. Second operand 31 states and 233 transitions. [2025-02-08 01:22:59,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 642 transitions, 14449 flow [2025-02-08 01:22:59,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 642 transitions, 13994 flow, removed 110 selfloop flow, removed 6 redundant places. [2025-02-08 01:22:59,925 INFO L231 Difference]: Finished difference. Result has 367 places, 583 transitions, 13202 flow [2025-02-08 01:22:59,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=12253, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=13202, PETRI_PLACES=367, PETRI_TRANSITIONS=583} [2025-02-08 01:22:59,926 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 346 predicate places. [2025-02-08 01:22:59,926 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 583 transitions, 13202 flow [2025-02-08 01:22:59,926 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) [2025-02-08 01:22:59,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:22:59,926 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:22:59,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-08 01:23:00,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 01:23:00,127 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:23:00,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:23:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash 598207228, now seen corresponding path program 12 times [2025-02-08 01:23:00,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:23:00,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535781243] [2025-02-08 01:23:00,127 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:23:00,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:23:00,132 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:23:00,139 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:23:00,139 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:23:00,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:23:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:23:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:23:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535781243] [2025-02-08 01:23:00,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535781243] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:23:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095129383] [2025-02-08 01:23:00,322 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:23:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:23:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:23:00,324 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:23:00,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 01:23:00,381 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:23:00,399 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:23:00,400 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:23:00,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:23:00,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-08 01:23:00,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:23:00,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-08 01:23:00,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:23:00,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2025-02-08 01:23:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:23:00,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:23:02,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 124 [2025-02-08 01:23:02,665 INFO L349 Elim1Store]: treesize reduction 5, result has 95.2 percent of original size [2025-02-08 01:23:02,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 452 treesize of output 369 [2025-02-08 01:23:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:23:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095129383] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:23:06,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:23:06,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 23 [2025-02-08 01:23:06,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381185943] [2025-02-08 01:23:06,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:23:06,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 01:23:06,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:23:06,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 01:23:06,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2025-02-08 01:23:06,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:23:06,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 583 transitions, 13202 flow. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:23:06,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:23:06,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:23:06,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:23:07,787 INFO L124 PetriNetUnfolderBase]: 1246/2430 cut-off events. [2025-02-08 01:23:07,787 INFO L125 PetriNetUnfolderBase]: For 45623/45623 co-relation queries the response was YES. [2025-02-08 01:23:07,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22825 conditions, 2430 events. 1246/2430 cut-off events. For 45623/45623 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 16115 event pairs, 10 based on Foata normal form. 3/2433 useless extension candidates. Maximal degree in co-relation 22629. Up to 1599 conditions per place. [2025-02-08 01:23:07,814 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 390 selfloop transitions, 240 changer transitions 17/648 dead transitions. [2025-02-08 01:23:07,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 648 transitions, 15009 flow [2025-02-08 01:23:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-08 01:23:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-08 01:23:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 223 transitions. [2025-02-08 01:23:07,815 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37166666666666665 [2025-02-08 01:23:07,816 INFO L175 Difference]: Start difference. First operand has 367 places, 583 transitions, 13202 flow. Second operand 30 states and 223 transitions. [2025-02-08 01:23:07,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 648 transitions, 15009 flow [2025-02-08 01:23:08,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 648 transitions, 14797 flow, removed 31 selfloop flow, removed 22 redundant places. [2025-02-08 01:23:08,192 INFO L231 Difference]: Finished difference. Result has 377 places, 587 transitions, 13769 flow [2025-02-08 01:23:08,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=13001, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13769, PETRI_PLACES=377, PETRI_TRANSITIONS=587} [2025-02-08 01:23:08,193 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 356 predicate places. [2025-02-08 01:23:08,194 INFO L471 AbstractCegarLoop]: Abstraction has has 377 places, 587 transitions, 13769 flow [2025-02-08 01:23:08,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:23:08,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:23:08,194 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:23:08,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 01:23:08,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-08 01:23:08,395 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:23:08,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:23:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1579066416, now seen corresponding path program 11 times [2025-02-08 01:23:08,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:23:08,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789987882] [2025-02-08 01:23:08,396 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:23:08,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:23:08,404 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:23:08,412 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:23:08,412 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:23:08,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:23:08,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:23:08,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:23:08,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789987882] [2025-02-08 01:23:08,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789987882] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:23:08,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594441404] [2025-02-08 01:23:08,648 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:23:08,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:23:08,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:23:08,654 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:23:08,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 01:23:08,746 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-08 01:23:08,785 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:23:08,785 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:23:08,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:23:08,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 01:23:08,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:23:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:23:08,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:23:08,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:23:08,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594441404] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:23:08,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:23:08,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-02-08 01:23:08,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460676590] [2025-02-08 01:23:08,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:23:08,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 01:23:08,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:23:08,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 01:23:08,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2025-02-08 01:23:08,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:23:08,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 587 transitions, 13769 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:23:08,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:23:08,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:23:08,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand