./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/mult-comm.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/mult-comm.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 de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:14:25,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:14:25,731 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:14:25,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:14:25,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:14:25,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:14:25,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:14:25,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:14:25,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:14:25,762 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:14:25,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:14:25,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:14:25,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:14:25,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:14:25,763 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:14:25,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:14:25,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:14:25,763 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:14:25,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:14:25,764 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:14:25,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:14:25,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:14:25,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:14:25,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:14:25,766 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 -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2025-02-08 01:14:25,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:14:25,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:14:25,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:14:25,998 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:14:25,998 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:14:25,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-comm.wvr.c [2025-02-08 01:14:27,188 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/383640c31/0866b1f6b604444bb8cac64d69aa0bed/FLAGa0333647b [2025-02-08 01:14:27,450 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:14:27,451 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2025-02-08 01:14:27,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/383640c31/0866b1f6b604444bb8cac64d69aa0bed/FLAGa0333647b [2025-02-08 01:14:27,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/383640c31/0866b1f6b604444bb8cac64d69aa0bed [2025-02-08 01:14:27,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:14:27,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:14:27,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:14:27,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:14:27,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:14:27,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:27,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13cea645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27, skipping insertion in model container [2025-02-08 01:14:27,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:27,817 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:14:27,932 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/mult-comm.wvr.c[1936,1949] [2025-02-08 01:14:27,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:14:27,940 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:14:27,953 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/mult-comm.wvr.c[1936,1949] [2025-02-08 01:14:27,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:14:27,969 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:14:27,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27 WrapperNode [2025-02-08 01:14:27,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:14:27,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:14:27,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:14:27,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:14:27,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:27,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:27,991 INFO L138 Inliner]: procedures = 20, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2025-02-08 01:14:27,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:14:27,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:14:27,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:14:27,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:14:27,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:27,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:28,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:28,009 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 01:14:28,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:28,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:28,014 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:28,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:28,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:28,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:28,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:14:28,020 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:14:28,020 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:14:28,020 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:14:28,021 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (1/1) ... [2025-02-08 01:14:28,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:14:28,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:28,053 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 01:14:28,059 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 01:14:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:14:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:14:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:14:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:14:28,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:14:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:14:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:14:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:14:28,076 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 01:14:28,150 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:14:28,154 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:14:28,267 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:14:28,268 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:14:28,341 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:14:28,341 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:14:28,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:14:28 BoogieIcfgContainer [2025-02-08 01:14:28,342 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:14:28,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:14:28,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:14:28,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:14:28,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:14:27" (1/3) ... [2025-02-08 01:14:28,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788c0c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:14:28, skipping insertion in model container [2025-02-08 01:14:28,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:27" (2/3) ... [2025-02-08 01:14:28,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788c0c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:14:28, skipping insertion in model container [2025-02-08 01:14:28,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:14:28" (3/3) ... [2025-02-08 01:14:28,349 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2025-02-08 01:14:28,360 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:14:28,361 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-comm.wvr.c that has 3 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-08 01:14:28,361 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:14:28,394 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 01:14:28,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2025-02-08 01:14:28,442 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-02-08 01:14:28,443 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:14:28,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-02-08 01:14:28,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2025-02-08 01:14:28,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2025-02-08 01:14:28,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:14:28,463 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;@24be05f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:14:28,463 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-08 01:14:28,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:14:28,469 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-02-08 01:14:28,469 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:14:28,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:28,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:28,470 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 01:14:28,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash -713607127, now seen corresponding path program 1 times [2025-02-08 01:14:28,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:28,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225404632] [2025-02-08 01:14:28,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:28,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:28,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 01:14:28,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 01:14:28,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:28,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:28,834 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 01:14:28,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:28,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225404632] [2025-02-08 01:14:28,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225404632] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:28,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:28,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:14:28,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215762316] [2025-02-08 01:14:28,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:28,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:14:28,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:28,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:14:28,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:14:28,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:28,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 01:14:28,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:28,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:28,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:28,947 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2025-02-08 01:14:28,949 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-02-08 01:14:28,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 327 event pairs, 22 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place. [2025-02-08 01:14:28,953 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2025-02-08 01:14:28,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2025-02-08 01:14:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:14:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:14:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2025-02-08 01:14:28,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2025-02-08 01:14:28,971 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 35 transitions. [2025-02-08 01:14:28,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2025-02-08 01:14:28,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:14:28,981 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2025-02-08 01:14:28,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2025-02-08 01:14:28,988 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2025-02-08 01:14:28,989 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2025-02-08 01:14:28,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 01:14:28,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:28,990 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:28,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:14:28,990 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 01:14:28,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:28,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1941819656, now seen corresponding path program 1 times [2025-02-08 01:14:28,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:28,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490550802] [2025-02-08 01:14:28,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:28,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:28,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:14:29,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:29,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:29,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:29,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:29,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:29,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490550802] [2025-02-08 01:14:29,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490550802] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597025866] [2025-02-08 01:14:29,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:29,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:29,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:29,284 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 01:14:29,287 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 01:14:29,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:14:29,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:29,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:29,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:29,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:14:29,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:29,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:29,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597025866] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:29,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:29,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2025-02-08 01:14:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230778056] [2025-02-08 01:14:29,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:29,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 01:14:29,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:29,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 01:14:29,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-02-08 01:14:29,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:29,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:29,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:29,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:29,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:29,811 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2025-02-08 01:14:29,811 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-08 01:14:29,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 354 event pairs, 12 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place. [2025-02-08 01:14:29,813 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2025-02-08 01:14:29,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2025-02-08 01:14:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:14:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:14:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2025-02-08 01:14:29,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2025-02-08 01:14:29,814 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 59 transitions. [2025-02-08 01:14:29,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2025-02-08 01:14:29,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:29,815 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2025-02-08 01:14:29,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2025-02-08 01:14:29,816 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places. [2025-02-08 01:14:29,816 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2025-02-08 01:14:29,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:29,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:29,816 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:29,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:14:30,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:30,017 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 01:14:30,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1433471378, now seen corresponding path program 2 times [2025-02-08 01:14:30,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:30,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039709974] [2025-02-08 01:14:30,019 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:30,024 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 01:14:30,037 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:30,037 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:30,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:30,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:30,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039709974] [2025-02-08 01:14:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039709974] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701130901] [2025-02-08 01:14:30,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:30,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:30,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:30,277 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 01:14:30,278 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 01:14:30,307 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 01:14:30,320 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:30,321 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:30,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:30,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:14:30,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:30,394 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:30,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701130901] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:30,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:30,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2025-02-08 01:14:30,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041060366] [2025-02-08 01:14:30,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:30,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:14:30,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:30,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:14:30,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:14:30,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:30,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 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 01:14:30,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:30,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:30,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:30,651 INFO L124 PetriNetUnfolderBase]: 113/210 cut-off events. [2025-02-08 01:14:30,651 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2025-02-08 01:14:30,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 210 events. 113/210 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 678 event pairs, 17 based on Foata normal form. 3/213 useless extension candidates. Maximal degree in co-relation 555. Up to 87 conditions per place. [2025-02-08 01:14:30,652 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 36 selfloop transitions, 17 changer transitions 9/63 dead transitions. [2025-02-08 01:14:30,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 63 transitions, 333 flow [2025-02-08 01:14:30,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:14:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:14:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2025-02-08 01:14:30,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-02-08 01:14:30,654 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 10 states and 94 transitions. [2025-02-08 01:14:30,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 63 transitions, 333 flow [2025-02-08 01:14:30,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 63 transitions, 315 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-08 01:14:30,656 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 175 flow [2025-02-08 01:14:30,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=175, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2025-02-08 01:14:30,656 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2025-02-08 01:14:30,656 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 175 flow [2025-02-08 01:14:30,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 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 01:14:30,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:30,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:30,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 01:14:30,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:30,861 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 01:14:30,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash 209325082, now seen corresponding path program 1 times [2025-02-08 01:14:30,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:30,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581686188] [2025-02-08 01:14:30,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:30,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:30,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:14:30,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:30,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:30,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:30,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:30,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581686188] [2025-02-08 01:14:30,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581686188] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:30,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62747493] [2025-02-08 01:14:30,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:30,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:30,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:30,972 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 01:14:30,978 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 01:14:31,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:14:31,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:31,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:31,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:31,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:14:31,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:31,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:31,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62747493] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:31,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:31,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2025-02-08 01:14:31,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673929593] [2025-02-08 01:14:31,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:31,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 01:14:31,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:31,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 01:14:31,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-02-08 01:14:31,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:31,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 175 flow. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:31,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:31,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:31,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:31,321 INFO L124 PetriNetUnfolderBase]: 117/221 cut-off events. [2025-02-08 01:14:31,322 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2025-02-08 01:14:31,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 221 events. 117/221 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 764 event pairs, 19 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 675. Up to 171 conditions per place. [2025-02-08 01:14:31,324 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 33 selfloop transitions, 6 changer transitions 12/52 dead transitions. [2025-02-08 01:14:31,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 349 flow [2025-02-08 01:14:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:14:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:14:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2025-02-08 01:14:31,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-02-08 01:14:31,327 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 175 flow. Second operand 6 states and 57 transitions. [2025-02-08 01:14:31,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 349 flow [2025-02-08 01:14:31,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 295 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-02-08 01:14:31,330 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 159 flow [2025-02-08 01:14:31,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2025-02-08 01:14:31,330 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 19 predicate places. [2025-02-08 01:14:31,330 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 159 flow [2025-02-08 01:14:31,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:31,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:31,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:31,337 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 01:14:31,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:31,535 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 01:14:31,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:31,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1918363764, now seen corresponding path program 2 times [2025-02-08 01:14:31,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:31,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464301972] [2025-02-08 01:14:31,536 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:31,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:31,540 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 01:14:31,545 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:31,545 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:31,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464301972] [2025-02-08 01:14:31,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464301972] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143539123] [2025-02-08 01:14:31,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:31,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:31,674 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 01:14:31,675 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 01:14:31,702 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 01:14:31,713 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:31,714 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:31,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:31,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:14:31,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:31,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:31,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143539123] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:31,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:31,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-02-08 01:14:31,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018574077] [2025-02-08 01:14:31,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:31,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 01:14:31,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:31,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 01:14:31,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-02-08 01:14:31,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:31,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 159 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:31,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:31,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:31,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:31,976 INFO L124 PetriNetUnfolderBase]: 131/242 cut-off events. [2025-02-08 01:14:31,976 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2025-02-08 01:14:31,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 242 events. 131/242 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 827 event pairs, 21 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 743. Up to 185 conditions per place. [2025-02-08 01:14:31,978 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 41 selfloop transitions, 14 changer transitions 4/60 dead transitions. [2025-02-08 01:14:31,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 380 flow [2025-02-08 01:14:31,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:14:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:14:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2025-02-08 01:14:31,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 01:14:31,982 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 159 flow. Second operand 8 states and 72 transitions. [2025-02-08 01:14:31,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 380 flow [2025-02-08 01:14:31,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 369 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 01:14:31,985 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 222 flow [2025-02-08 01:14:31,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2025-02-08 01:14:31,985 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2025-02-08 01:14:31,985 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 222 flow [2025-02-08 01:14:31,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:31,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:31,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:31,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 01:14:32,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:32,186 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 01:14:32,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:32,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1173411192, now seen corresponding path program 3 times [2025-02-08 01:14:32,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:32,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355286540] [2025-02-08 01:14:32,187 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:32,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:32,191 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-02-08 01:14:32,196 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:32,196 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:14:32,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:32,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:32,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355286540] [2025-02-08 01:14:32,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355286540] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:32,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305047582] [2025-02-08 01:14:32,315 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:32,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:32,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:32,317 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 01:14:32,322 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 01:14:32,360 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-02-08 01:14:32,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:32,390 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:14:32,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:32,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 01:14:32,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:32,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:32,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305047582] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:32,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:32,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-02-08 01:14:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276575376] [2025-02-08 01:14:32,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:32,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 01:14:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:32,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 01:14:32,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2025-02-08 01:14:32,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:32,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 222 flow. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 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 01:14:32,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:32,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:32,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:32,712 INFO L124 PetriNetUnfolderBase]: 145/265 cut-off events. [2025-02-08 01:14:32,713 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2025-02-08 01:14:32,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 265 events. 145/265 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 941 event pairs, 26 based on Foata normal form. 2/265 useless extension candidates. Maximal degree in co-relation 876. Up to 209 conditions per place. [2025-02-08 01:14:32,714 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 46 selfloop transitions, 14 changer transitions 6/67 dead transitions. [2025-02-08 01:14:32,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 463 flow [2025-02-08 01:14:32,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:14:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:14:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2025-02-08 01:14:32,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 01:14:32,716 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 222 flow. Second operand 8 states and 72 transitions. [2025-02-08 01:14:32,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 463 flow [2025-02-08 01:14:32,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 419 flow, removed 15 selfloop flow, removed 3 redundant places. [2025-02-08 01:14:32,718 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 279 flow [2025-02-08 01:14:32,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=279, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2025-02-08 01:14:32,719 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2025-02-08 01:14:32,719 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 279 flow [2025-02-08 01:14:32,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 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 01:14:32,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:32,719 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:32,728 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 01:14:32,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:32,924 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 01:14:32,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:32,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1013630236, now seen corresponding path program 3 times [2025-02-08 01:14:32,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:32,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335865279] [2025-02-08 01:14:32,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:32,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:32,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-02-08 01:14:32,933 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:32,934 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:14:32,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:33,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335865279] [2025-02-08 01:14:33,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335865279] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974289832] [2025-02-08 01:14:33,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:33,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:33,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:33,060 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 01:14:33,061 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 01:14:33,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-02-08 01:14:33,099 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:14:33,099 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:14:33,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:33,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 01:14:33,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:33,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:33,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974289832] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:33,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:33,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 13 [2025-02-08 01:14:33,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627911127] [2025-02-08 01:14:33,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:33,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 01:14:33,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:33,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 01:14:33,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:14:33,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:33,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 279 flow. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 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 01:14:33,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:33,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:33,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:33,539 INFO L124 PetriNetUnfolderBase]: 183/336 cut-off events. [2025-02-08 01:14:33,539 INFO L125 PetriNetUnfolderBase]: For 706/706 co-relation queries the response was YES. [2025-02-08 01:14:33,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 336 events. 183/336 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1288 event pairs, 33 based on Foata normal form. 3/337 useless extension candidates. Maximal degree in co-relation 1177. Up to 238 conditions per place. [2025-02-08 01:14:33,541 INFO L140 encePairwiseOnDemand]: 11/18 looper letters, 55 selfloop transitions, 21 changer transitions 7/84 dead transitions. [2025-02-08 01:14:33,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 631 flow [2025-02-08 01:14:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 01:14:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 01:14:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2025-02-08 01:14:33,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2025-02-08 01:14:33,543 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 279 flow. Second operand 11 states and 93 transitions. [2025-02-08 01:14:33,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 631 flow [2025-02-08 01:14:33,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 584 flow, removed 18 selfloop flow, removed 3 redundant places. [2025-02-08 01:14:33,547 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 380 flow [2025-02-08 01:14:33,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=380, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2025-02-08 01:14:33,548 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 41 predicate places. [2025-02-08 01:14:33,548 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 380 flow [2025-02-08 01:14:33,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 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 01:14:33,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:33,549 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:33,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 01:14:33,749 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,SelfDestructingSolverStorable6 [2025-02-08 01:14:33,750 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 01:14:33,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1510158773, now seen corresponding path program 1 times [2025-02-08 01:14:33,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:33,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355642821] [2025-02-08 01:14:33,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:33,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:14:33,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:33,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:33,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:34,027 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 01:14:34,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:34,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355642821] [2025-02-08 01:14:34,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355642821] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:34,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822369314] [2025-02-08 01:14:34,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:34,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:34,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:34,030 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 01:14:34,034 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 01:14:34,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:14:34,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:34,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:34,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:34,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:14:34,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:34,263 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 01:14:34,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:34,603 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 01:14:34,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822369314] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:34,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:34,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:14:34,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848979580] [2025-02-08 01:14:34,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:34,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:14:34,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:34,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:14:34,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:14:34,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:34,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 380 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 01:14:34,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:34,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:34,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:39,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 01:14:40,405 INFO L124 PetriNetUnfolderBase]: 253/483 cut-off events. [2025-02-08 01:14:40,405 INFO L125 PetriNetUnfolderBase]: For 966/966 co-relation queries the response was YES. [2025-02-08 01:14:40,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 483 events. 253/483 cut-off events. For 966/966 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2201 event pairs, 25 based on Foata normal form. 3/484 useless extension candidates. Maximal degree in co-relation 1691. Up to 240 conditions per place. [2025-02-08 01:14:40,409 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 83 selfloop transitions, 49 changer transitions 30/163 dead transitions. [2025-02-08 01:14:40,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 163 transitions, 1168 flow [2025-02-08 01:14:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 01:14:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-08 01:14:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 199 transitions. [2025-02-08 01:14:40,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2025-02-08 01:14:40,410 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 380 flow. Second operand 24 states and 199 transitions. [2025-02-08 01:14:40,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 163 transitions, 1168 flow [2025-02-08 01:14:40,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 163 transitions, 1101 flow, removed 27 selfloop flow, removed 4 redundant places. [2025-02-08 01:14:40,415 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 630 flow [2025-02-08 01:14:40,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=630, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2025-02-08 01:14:40,416 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2025-02-08 01:14:40,416 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 630 flow [2025-02-08 01:14:40,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 01:14:40,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:40,416 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:40,423 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 01:14:40,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:40,621 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 01:14:40,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:40,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1019479343, now seen corresponding path program 2 times [2025-02-08 01:14:40,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:40,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980733707] [2025-02-08 01:14:40,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:40,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:40,624 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:40,632 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:40,632 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:40,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:41,015 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 01:14:41,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:41,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980733707] [2025-02-08 01:14:41,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980733707] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:41,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880362863] [2025-02-08 01:14:41,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:41,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:41,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:41,022 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 01:14:41,030 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 01:14:41,053 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:41,081 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:41,081 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:41,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:41,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:14:41,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:41,262 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 01:14:41,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:41,591 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 01:14:41,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880362863] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:41,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:41,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-02-08 01:14:41,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602366529] [2025-02-08 01:14:41,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:41,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:14:41,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:41,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:14:41,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:14:41,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:41,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 630 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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 01:14:41,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:41,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:41,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:43,468 INFO L124 PetriNetUnfolderBase]: 286/574 cut-off events. [2025-02-08 01:14:43,468 INFO L125 PetriNetUnfolderBase]: For 3147/3147 co-relation queries the response was YES. [2025-02-08 01:14:43,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 574 events. 286/574 cut-off events. For 3147/3147 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2854 event pairs, 20 based on Foata normal form. 3/575 useless extension candidates. Maximal degree in co-relation 2543. Up to 244 conditions per place. [2025-02-08 01:14:43,473 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 97 selfloop transitions, 77 changer transitions 18/193 dead transitions. [2025-02-08 01:14:43,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 193 transitions, 1791 flow [2025-02-08 01:14:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-08 01:14:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-08 01:14:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 243 transitions. [2025-02-08 01:14:43,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-08 01:14:43,475 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 630 flow. Second operand 30 states and 243 transitions. [2025-02-08 01:14:43,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 193 transitions, 1791 flow [2025-02-08 01:14:43,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 193 transitions, 1579 flow, removed 88 selfloop flow, removed 12 redundant places. [2025-02-08 01:14:43,489 INFO L231 Difference]: Finished difference. Result has 108 places, 116 transitions, 1029 flow [2025-02-08 01:14:43,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1029, PETRI_PLACES=108, PETRI_TRANSITIONS=116} [2025-02-08 01:14:43,492 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 88 predicate places. [2025-02-08 01:14:43,492 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 116 transitions, 1029 flow [2025-02-08 01:14:43,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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 01:14:43,493 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:43,493 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:43,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 01:14:43,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:43,694 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 01:14:43,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash -964068083, now seen corresponding path program 3 times [2025-02-08 01:14:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:43,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834581988] [2025-02-08 01:14:43,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:43,697 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:43,707 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:43,707 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:14:43,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:44,035 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 01:14:44,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834581988] [2025-02-08 01:14:44,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834581988] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:44,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794924819] [2025-02-08 01:14:44,036 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:44,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:44,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:44,039 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 01:14:44,040 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 01:14:44,062 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:44,085 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:44,085 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:14:44,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:44,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:14:44,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:44,240 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 01:14:44,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:44,559 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 01:14:44,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794924819] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:44,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-02-08 01:14:44,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940227402] [2025-02-08 01:14:44,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:44,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:14:44,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:44,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:14:44,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:14:44,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:44,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 116 transitions, 1029 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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 01:14:44,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:44,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:44,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:45,720 INFO L124 PetriNetUnfolderBase]: 277/542 cut-off events. [2025-02-08 01:14:45,720 INFO L125 PetriNetUnfolderBase]: For 2506/2506 co-relation queries the response was YES. [2025-02-08 01:14:45,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2636 conditions, 542 events. 277/542 cut-off events. For 2506/2506 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2610 event pairs, 20 based on Foata normal form. 3/537 useless extension candidates. Maximal degree in co-relation 2525. Up to 247 conditions per place. [2025-02-08 01:14:45,725 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 85 selfloop transitions, 79 changer transitions 14/179 dead transitions. [2025-02-08 01:14:45,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 179 transitions, 1666 flow [2025-02-08 01:14:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 01:14:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-08 01:14:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 209 transitions. [2025-02-08 01:14:45,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4465811965811966 [2025-02-08 01:14:45,728 INFO L175 Difference]: Start difference. First operand has 108 places, 116 transitions, 1029 flow. Second operand 26 states and 209 transitions. [2025-02-08 01:14:45,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 179 transitions, 1666 flow [2025-02-08 01:14:45,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 179 transitions, 1304 flow, removed 158 selfloop flow, removed 15 redundant places. [2025-02-08 01:14:45,737 INFO L231 Difference]: Finished difference. Result has 120 places, 120 transitions, 949 flow [2025-02-08 01:14:45,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=949, PETRI_PLACES=120, PETRI_TRANSITIONS=120} [2025-02-08 01:14:45,739 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 100 predicate places. [2025-02-08 01:14:45,741 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 120 transitions, 949 flow [2025-02-08 01:14:45,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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 01:14:45,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:45,742 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:45,748 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 01:14:45,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:45,943 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 01:14:45,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:45,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1821299679, now seen corresponding path program 4 times [2025-02-08 01:14:45,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:45,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006054369] [2025-02-08 01:14:45,944 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:45,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:45,947 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:45,960 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 01:14:45,961 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:14:45,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:46,196 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 01:14:46,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:46,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006054369] [2025-02-08 01:14:46,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006054369] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:46,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326580816] [2025-02-08 01:14:46,197 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:46,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:46,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:46,201 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 01:14:46,202 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 01:14:46,225 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:46,246 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 01:14:46,246 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:14:46,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:46,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:14:46,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:46,424 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 01:14:46,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:47,328 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 01:14:47,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326580816] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:47,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:47,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:14:47,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803401517] [2025-02-08 01:14:47,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:47,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:14:47,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:47,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:14:47,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:14:47,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:47,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 120 transitions, 949 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 01:14:47,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:47,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:47,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:47,917 INFO L124 PetriNetUnfolderBase]: 342/656 cut-off events. [2025-02-08 01:14:47,917 INFO L125 PetriNetUnfolderBase]: For 1779/1779 co-relation queries the response was YES. [2025-02-08 01:14:47,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2961 conditions, 656 events. 342/656 cut-off events. For 1779/1779 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3252 event pairs, 37 based on Foata normal form. 3/637 useless extension candidates. Maximal degree in co-relation 2872. Up to 511 conditions per place. [2025-02-08 01:14:47,922 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 135 selfloop transitions, 45 changer transitions 15/196 dead transitions. [2025-02-08 01:14:47,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 196 transitions, 1836 flow [2025-02-08 01:14:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 01:14:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-08 01:14:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 146 transitions. [2025-02-08 01:14:47,923 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2025-02-08 01:14:47,923 INFO L175 Difference]: Start difference. First operand has 120 places, 120 transitions, 949 flow. Second operand 18 states and 146 transitions. [2025-02-08 01:14:47,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 196 transitions, 1836 flow [2025-02-08 01:14:47,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 196 transitions, 1599 flow, removed 38 selfloop flow, removed 21 redundant places. [2025-02-08 01:14:47,932 INFO L231 Difference]: Finished difference. Result has 120 places, 153 transitions, 1221 flow [2025-02-08 01:14:47,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1221, PETRI_PLACES=120, PETRI_TRANSITIONS=153} [2025-02-08 01:14:47,932 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 100 predicate places. [2025-02-08 01:14:47,933 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 153 transitions, 1221 flow [2025-02-08 01:14:47,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 01:14:47,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:47,933 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:47,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 01:14:48,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:48,133 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 01:14:48,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:48,134 INFO L85 PathProgramCache]: Analyzing trace with hash -448054221, now seen corresponding path program 4 times [2025-02-08 01:14:48,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:48,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186276762] [2025-02-08 01:14:48,134 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:48,137 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:48,143 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 01:14:48,143 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:14:48,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:48,312 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 01:14:48,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:48,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186276762] [2025-02-08 01:14:48,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186276762] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:48,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516529646] [2025-02-08 01:14:48,312 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:48,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:48,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:48,314 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 01:14:48,316 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 01:14:48,339 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:48,354 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 01:14:48,354 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:14:48,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:48,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 01:14:48,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:48,500 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 01:14:48,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:48,662 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 01:14:48,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516529646] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:48,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:48,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2025-02-08 01:14:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955935446] [2025-02-08 01:14:48,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:48,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 01:14:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:48,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 01:14:48,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-02-08 01:14:48,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:48,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 153 transitions, 1221 flow. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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 01:14:48,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:48,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:48,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:49,005 INFO L124 PetriNetUnfolderBase]: 334/644 cut-off events. [2025-02-08 01:14:49,006 INFO L125 PetriNetUnfolderBase]: For 1726/1726 co-relation queries the response was YES. [2025-02-08 01:14:49,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 644 events. 334/644 cut-off events. For 1726/1726 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3213 event pairs, 36 based on Foata normal form. 4/626 useless extension candidates. Maximal degree in co-relation 2900. Up to 513 conditions per place. [2025-02-08 01:14:49,011 INFO L140 encePairwiseOnDemand]: 11/18 looper letters, 134 selfloop transitions, 30 changer transitions 25/190 dead transitions. [2025-02-08 01:14:49,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 190 transitions, 1792 flow [2025-02-08 01:14:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 01:14:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 01:14:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 109 transitions. [2025-02-08 01:14:49,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2025-02-08 01:14:49,012 INFO L175 Difference]: Start difference. First operand has 120 places, 153 transitions, 1221 flow. Second operand 13 states and 109 transitions. [2025-02-08 01:14:49,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 190 transitions, 1792 flow [2025-02-08 01:14:49,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 1702 flow, removed 33 selfloop flow, removed 4 redundant places. [2025-02-08 01:14:49,023 INFO L231 Difference]: Finished difference. Result has 130 places, 150 transitions, 1178 flow [2025-02-08 01:14:49,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1178, PETRI_PLACES=130, PETRI_TRANSITIONS=150} [2025-02-08 01:14:49,024 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 110 predicate places. [2025-02-08 01:14:49,024 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 150 transitions, 1178 flow [2025-02-08 01:14:49,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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 01:14:49,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:49,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:49,030 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 01:14:49,229 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,SelfDestructingSolverStorable11 [2025-02-08 01:14:49,229 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 01:14:49,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash 525336913, now seen corresponding path program 5 times [2025-02-08 01:14:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:49,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411949520] [2025-02-08 01:14:49,230 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:49,233 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:49,240 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:49,240 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:49,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:49,633 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 01:14:49,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:49,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411949520] [2025-02-08 01:14:49,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411949520] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:49,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950748409] [2025-02-08 01:14:49,633 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:49,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:49,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:49,635 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 01:14:49,640 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 01:14:49,664 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:49,676 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:49,676 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:49,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:49,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:14:49,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:49,957 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 01:14:49,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:51,094 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 01:14:51,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950748409] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:51,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:51,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:14:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676159877] [2025-02-08 01:14:51,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:51,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:14:51,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:51,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:14:51,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:14:51,097 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:51,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 150 transitions, 1178 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:14:51,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:51,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:51,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:55,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 01:14:55,972 INFO L124 PetriNetUnfolderBase]: 349/665 cut-off events. [2025-02-08 01:14:55,972 INFO L125 PetriNetUnfolderBase]: For 1970/1970 co-relation queries the response was YES. [2025-02-08 01:14:55,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3158 conditions, 665 events. 349/665 cut-off events. For 1970/1970 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3289 event pairs, 35 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 3076. Up to 500 conditions per place. [2025-02-08 01:14:55,978 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 133 selfloop transitions, 53 changer transitions 9/196 dead transitions. [2025-02-08 01:14:55,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 196 transitions, 1916 flow [2025-02-08 01:14:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 01:14:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 01:14:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 128 transitions. [2025-02-08 01:14:55,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41830065359477125 [2025-02-08 01:14:55,979 INFO L175 Difference]: Start difference. First operand has 130 places, 150 transitions, 1178 flow. Second operand 17 states and 128 transitions. [2025-02-08 01:14:55,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 196 transitions, 1916 flow [2025-02-08 01:14:55,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 196 transitions, 1839 flow, removed 13 selfloop flow, removed 9 redundant places. [2025-02-08 01:14:55,993 INFO L231 Difference]: Finished difference. Result has 138 places, 164 transitions, 1463 flow [2025-02-08 01:14:55,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1463, PETRI_PLACES=138, PETRI_TRANSITIONS=164} [2025-02-08 01:14:55,994 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 118 predicate places. [2025-02-08 01:14:55,995 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 164 transitions, 1463 flow [2025-02-08 01:14:55,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:14:55,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:55,995 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:56,005 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 01:14:56,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:56,200 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 01:14:56,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash 476181763, now seen corresponding path program 6 times [2025-02-08 01:14:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:56,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277598920] [2025-02-08 01:14:56,200 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:56,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:56,203 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:56,224 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:56,230 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:14:56,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:56,642 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 01:14:56,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:56,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277598920] [2025-02-08 01:14:56,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277598920] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:56,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953021460] [2025-02-08 01:14:56,643 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:56,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:56,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:56,645 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 01:14:56,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 01:14:56,671 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:14:56,701 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:56,701 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:14:56,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:56,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:14:56,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:56,828 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 01:14:56,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:57,544 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 01:14:57,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953021460] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:57,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:57,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:14:57,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639413854] [2025-02-08 01:14:57,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:57,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:14:57,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:57,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:14:57,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:14:57,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:57,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 164 transitions, 1463 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 01:14:57,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:57,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:57,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:58,231 INFO L124 PetriNetUnfolderBase]: 354/672 cut-off events. [2025-02-08 01:14:58,231 INFO L125 PetriNetUnfolderBase]: For 2471/2471 co-relation queries the response was YES. [2025-02-08 01:14:58,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 672 events. 354/672 cut-off events. For 2471/2471 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3313 event pairs, 35 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 3339. Up to 503 conditions per place. [2025-02-08 01:14:58,236 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 139 selfloop transitions, 55 changer transitions 8/203 dead transitions. [2025-02-08 01:14:58,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 203 transitions, 2083 flow [2025-02-08 01:14:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 01:14:58,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-08 01:14:58,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 141 transitions. [2025-02-08 01:14:58,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2025-02-08 01:14:58,237 INFO L175 Difference]: Start difference. First operand has 138 places, 164 transitions, 1463 flow. Second operand 18 states and 141 transitions. [2025-02-08 01:14:58,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 203 transitions, 2083 flow [2025-02-08 01:14:58,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 203 transitions, 1886 flow, removed 75 selfloop flow, removed 11 redundant places. [2025-02-08 01:14:58,251 INFO L231 Difference]: Finished difference. Result has 145 places, 169 transitions, 1488 flow [2025-02-08 01:14:58,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1488, PETRI_PLACES=145, PETRI_TRANSITIONS=169} [2025-02-08 01:14:58,252 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 125 predicate places. [2025-02-08 01:14:58,252 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 169 transitions, 1488 flow [2025-02-08 01:14:58,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 01:14:58,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:58,253 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:58,259 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 01:14:58,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:58,453 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 01:14:58,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:58,454 INFO L85 PathProgramCache]: Analyzing trace with hash -403815027, now seen corresponding path program 7 times [2025-02-08 01:14:58,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:58,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634411575] [2025-02-08 01:14:58,454 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:14:58,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:58,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:14:58,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:58,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:58,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:58,724 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 01:14:58,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:58,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634411575] [2025-02-08 01:14:58,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634411575] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:58,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485143872] [2025-02-08 01:14:58,725 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:14:58,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:58,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:58,727 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 01:14:58,729 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 01:14:58,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:14:58,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:14:58,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:58,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:58,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:14:58,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:58,933 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 01:14:58,934 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:59,634 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 01:14:59,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485143872] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:59,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:59,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:14:59,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233221463] [2025-02-08 01:14:59,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:59,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:14:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:59,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:14:59,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:14:59,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:14:59,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 169 transitions, 1488 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:14:59,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:59,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:14:59,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:00,176 INFO L124 PetriNetUnfolderBase]: 392/741 cut-off events. [2025-02-08 01:15:00,177 INFO L125 PetriNetUnfolderBase]: For 2969/2969 co-relation queries the response was YES. [2025-02-08 01:15:00,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 741 events. 392/741 cut-off events. For 2969/2969 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3753 event pairs, 33 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 3816. Up to 601 conditions per place. [2025-02-08 01:15:00,182 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 162 selfloop transitions, 52 changer transitions 9/224 dead transitions. [2025-02-08 01:15:00,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 224 transitions, 2392 flow [2025-02-08 01:15:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 01:15:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-08 01:15:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 146 transitions. [2025-02-08 01:15:00,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2025-02-08 01:15:00,188 INFO L175 Difference]: Start difference. First operand has 145 places, 169 transitions, 1488 flow. Second operand 20 states and 146 transitions. [2025-02-08 01:15:00,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 224 transitions, 2392 flow [2025-02-08 01:15:00,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 224 transitions, 2194 flow, removed 59 selfloop flow, removed 15 redundant places. [2025-02-08 01:15:00,201 INFO L231 Difference]: Finished difference. Result has 155 places, 189 transitions, 1778 flow [2025-02-08 01:15:00,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1778, PETRI_PLACES=155, PETRI_TRANSITIONS=189} [2025-02-08 01:15:00,202 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 135 predicate places. [2025-02-08 01:15:00,202 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 189 transitions, 1778 flow [2025-02-08 01:15:00,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:15:00,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:00,203 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:00,211 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 01:15:00,403 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,SelfDestructingSolverStorable14 [2025-02-08 01:15:00,403 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 01:15:00,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:00,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2066747473, now seen corresponding path program 8 times [2025-02-08 01:15:00,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:00,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254294866] [2025-02-08 01:15:00,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:00,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:00,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:00,413 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:00,413 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:00,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:00,676 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 01:15:00,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:00,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254294866] [2025-02-08 01:15:00,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254294866] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:00,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305658610] [2025-02-08 01:15:00,677 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:00,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:00,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:00,679 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 01:15:00,680 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 01:15:00,704 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:00,732 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:00,732 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:00,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:00,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:00,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:00,849 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 01:15:00,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:01,444 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 01:15:01,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305658610] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:01,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:01,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2025-02-08 01:15:01,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535050913] [2025-02-08 01:15:01,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:01,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 01:15:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:01,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 01:15:01,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-02-08 01:15:01,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:01,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 189 transitions, 1778 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:01,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:01,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:01,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:02,003 INFO L124 PetriNetUnfolderBase]: 395/752 cut-off events. [2025-02-08 01:15:02,003 INFO L125 PetriNetUnfolderBase]: For 3452/3452 co-relation queries the response was YES. [2025-02-08 01:15:02,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 752 events. 395/752 cut-off events. For 3452/3452 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3852 event pairs, 33 based on Foata normal form. 3/731 useless extension candidates. Maximal degree in co-relation 4021. Up to 645 conditions per place. [2025-02-08 01:15:02,008 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 174 selfloop transitions, 43 changer transitions 7/225 dead transitions. [2025-02-08 01:15:02,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 225 transitions, 2482 flow [2025-02-08 01:15:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 01:15:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-08 01:15:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 135 transitions. [2025-02-08 01:15:02,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-02-08 01:15:02,010 INFO L175 Difference]: Start difference. First operand has 155 places, 189 transitions, 1778 flow. Second operand 18 states and 135 transitions. [2025-02-08 01:15:02,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 225 transitions, 2482 flow [2025-02-08 01:15:02,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 225 transitions, 2275 flow, removed 85 selfloop flow, removed 10 redundant places. [2025-02-08 01:15:02,024 INFO L231 Difference]: Finished difference. Result has 166 places, 195 transitions, 1828 flow [2025-02-08 01:15:02,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1828, PETRI_PLACES=166, PETRI_TRANSITIONS=195} [2025-02-08 01:15:02,024 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 146 predicate places. [2025-02-08 01:15:02,024 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 195 transitions, 1828 flow [2025-02-08 01:15:02,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:02,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:02,025 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:02,031 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 01:15:02,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 01:15:02,225 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 01:15:02,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash 742065997, now seen corresponding path program 4 times [2025-02-08 01:15:02,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:02,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251483389] [2025-02-08 01:15:02,226 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:02,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:02,229 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:02,233 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 01:15:02,233 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:15:02,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:02,320 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 01:15:02,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251483389] [2025-02-08 01:15:02,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251483389] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205494673] [2025-02-08 01:15:02,320 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:02,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:02,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:02,323 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 01:15:02,324 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 01:15:02,345 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:02,360 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 01:15:02,361 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:15:02,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:02,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 01:15:02,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:02,439 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 01:15:02,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:06,958 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 01:15:06,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205494673] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:06,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:06,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2025-02-08 01:15:06,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149568313] [2025-02-08 01:15:06,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:06,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 01:15:06,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:06,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 01:15:06,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=110, Unknown=1, NotChecked=0, Total=156 [2025-02-08 01:15:06,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:06,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 195 transitions, 1828 flow. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:06,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:06,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:06,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:07,247 INFO L124 PetriNetUnfolderBase]: 400/757 cut-off events. [2025-02-08 01:15:07,248 INFO L125 PetriNetUnfolderBase]: For 3896/3896 co-relation queries the response was YES. [2025-02-08 01:15:07,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 757 events. 400/757 cut-off events. For 3896/3896 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3876 event pairs, 39 based on Foata normal form. 3/734 useless extension candidates. Maximal degree in co-relation 4055. Up to 641 conditions per place. [2025-02-08 01:15:07,253 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 172 selfloop transitions, 27 changer transitions 19/219 dead transitions. [2025-02-08 01:15:07,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 219 transitions, 2397 flow [2025-02-08 01:15:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 01:15:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 01:15:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2025-02-08 01:15:07,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2025-02-08 01:15:07,253 INFO L175 Difference]: Start difference. First operand has 166 places, 195 transitions, 1828 flow. Second operand 11 states and 93 transitions. [2025-02-08 01:15:07,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 219 transitions, 2397 flow [2025-02-08 01:15:07,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 219 transitions, 2287 flow, removed 36 selfloop flow, removed 9 redundant places. [2025-02-08 01:15:07,268 INFO L231 Difference]: Finished difference. Result has 168 places, 189 transitions, 1715 flow [2025-02-08 01:15:07,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1715, PETRI_PLACES=168, PETRI_TRANSITIONS=189} [2025-02-08 01:15:07,268 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 148 predicate places. [2025-02-08 01:15:07,269 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 189 transitions, 1715 flow [2025-02-08 01:15:07,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:07,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:07,269 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:07,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 01:15:07,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-08 01:15:07,470 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 01:15:07,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:07,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1934208047, now seen corresponding path program 9 times [2025-02-08 01:15:07,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:07,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765340976] [2025-02-08 01:15:07,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:15:07,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:07,473 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:07,480 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:07,480 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:15:07,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:07,729 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 01:15:07,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:07,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765340976] [2025-02-08 01:15:07,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765340976] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:07,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467865794] [2025-02-08 01:15:07,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:15:07,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:07,731 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 01:15:07,732 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 01:15:07,756 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:07,787 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:07,787 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:15:07,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:07,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:07,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:07,938 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 01:15:07,939 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:09,860 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 01:15:09,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467865794] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:09,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:09,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:15:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114449259] [2025-02-08 01:15:09,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:09,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:15:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:09,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:15:09,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:15:09,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:09,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 189 transitions, 1715 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:09,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:09,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:09,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:10,398 INFO L124 PetriNetUnfolderBase]: 394/749 cut-off events. [2025-02-08 01:15:10,399 INFO L125 PetriNetUnfolderBase]: For 3819/3819 co-relation queries the response was YES. [2025-02-08 01:15:10,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 749 events. 394/749 cut-off events. For 3819/3819 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3810 event pairs, 41 based on Foata normal form. 3/726 useless extension candidates. Maximal degree in co-relation 3926. Up to 654 conditions per place. [2025-02-08 01:15:10,405 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 175 selfloop transitions, 36 changer transitions 8/220 dead transitions. [2025-02-08 01:15:10,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 220 transitions, 2297 flow [2025-02-08 01:15:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 01:15:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 01:15:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 114 transitions. [2025-02-08 01:15:10,408 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2025-02-08 01:15:10,408 INFO L175 Difference]: Start difference. First operand has 168 places, 189 transitions, 1715 flow. Second operand 15 states and 114 transitions. [2025-02-08 01:15:10,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 220 transitions, 2297 flow [2025-02-08 01:15:10,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 220 transitions, 2184 flow, removed 28 selfloop flow, removed 9 redundant places. [2025-02-08 01:15:10,423 INFO L231 Difference]: Finished difference. Result has 172 places, 192 transitions, 1743 flow [2025-02-08 01:15:10,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1743, PETRI_PLACES=172, PETRI_TRANSITIONS=192} [2025-02-08 01:15:10,425 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 152 predicate places. [2025-02-08 01:15:10,425 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 192 transitions, 1743 flow [2025-02-08 01:15:10,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:10,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:10,425 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:10,432 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 01:15:10,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 01:15:10,627 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 01:15:10,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:10,627 INFO L85 PathProgramCache]: Analyzing trace with hash -348403767, now seen corresponding path program 10 times [2025-02-08 01:15:10,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:10,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491237781] [2025-02-08 01:15:10,627 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:10,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:10,630 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:10,635 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 01:15:10,637 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:15:10,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:10,879 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 01:15:10,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491237781] [2025-02-08 01:15:10,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491237781] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508305837] [2025-02-08 01:15:10,880 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:10,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:10,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:10,882 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 01:15:10,883 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 01:15:10,907 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:10,930 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 01:15:10,930 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:15:10,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:10,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:10,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:11,098 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 01:15:11,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:13,005 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 01:15:13,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508305837] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:13,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:13,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:15:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615186062] [2025-02-08 01:15:13,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:13,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:15:13,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:13,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:15:13,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:15:13,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:13,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 192 transitions, 1743 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:15:13,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:13,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:13,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:13,719 INFO L124 PetriNetUnfolderBase]: 389/742 cut-off events. [2025-02-08 01:15:13,719 INFO L125 PetriNetUnfolderBase]: For 3695/3695 co-relation queries the response was YES. [2025-02-08 01:15:13,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3995 conditions, 742 events. 389/742 cut-off events. For 3695/3695 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3754 event pairs, 39 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 3936. Up to 613 conditions per place. [2025-02-08 01:15:13,724 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 166 selfloop transitions, 53 changer transitions 7/227 dead transitions. [2025-02-08 01:15:13,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 227 transitions, 2384 flow [2025-02-08 01:15:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 01:15:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 01:15:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 153 transitions. [2025-02-08 01:15:13,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2025-02-08 01:15:13,725 INFO L175 Difference]: Start difference. First operand has 172 places, 192 transitions, 1743 flow. Second operand 21 states and 153 transitions. [2025-02-08 01:15:13,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 227 transitions, 2384 flow [2025-02-08 01:15:13,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 227 transitions, 2281 flow, removed 26 selfloop flow, removed 11 redundant places. [2025-02-08 01:15:13,740 INFO L231 Difference]: Finished difference. Result has 183 places, 195 transitions, 1830 flow [2025-02-08 01:15:13,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1830, PETRI_PLACES=183, PETRI_TRANSITIONS=195} [2025-02-08 01:15:13,741 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 163 predicate places. [2025-02-08 01:15:13,741 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 195 transitions, 1830 flow [2025-02-08 01:15:13,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:15:13,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:13,741 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:13,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 01:15:13,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:13,942 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 01:15:13,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:13,943 INFO L85 PathProgramCache]: Analyzing trace with hash 134040551, now seen corresponding path program 11 times [2025-02-08 01:15:13,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:13,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893393983] [2025-02-08 01:15:13,943 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:13,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:13,945 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:13,949 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:13,952 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:13,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:14,269 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 01:15:14,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:14,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893393983] [2025-02-08 01:15:14,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893393983] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:14,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575708396] [2025-02-08 01:15:14,269 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:14,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:14,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:14,273 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 01:15:14,277 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 01:15:14,302 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:14,331 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:14,331 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:14,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:14,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:14,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:15,045 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 01:15:15,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:15,932 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 01:15:15,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575708396] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:15,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:15,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:15:15,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455208835] [2025-02-08 01:15:15,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:15,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:15:15,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:15,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:15:15,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:15:15,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:15,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 195 transitions, 1830 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:15:15,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:15,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:15,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:21,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 01:15:22,465 INFO L124 PetriNetUnfolderBase]: 419/794 cut-off events. [2025-02-08 01:15:22,465 INFO L125 PetriNetUnfolderBase]: For 5223/5223 co-relation queries the response was YES. [2025-02-08 01:15:22,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4576 conditions, 794 events. 419/794 cut-off events. For 5223/5223 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4071 event pairs, 42 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 4516. Up to 652 conditions per place. [2025-02-08 01:15:22,471 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 174 selfloop transitions, 52 changer transitions 9/236 dead transitions. [2025-02-08 01:15:22,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 236 transitions, 2756 flow [2025-02-08 01:15:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 01:15:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 01:15:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 119 transitions. [2025-02-08 01:15:22,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2025-02-08 01:15:22,477 INFO L175 Difference]: Start difference. First operand has 183 places, 195 transitions, 1830 flow. Second operand 16 states and 119 transitions. [2025-02-08 01:15:22,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 236 transitions, 2756 flow [2025-02-08 01:15:22,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 236 transitions, 2555 flow, removed 61 selfloop flow, removed 21 redundant places. [2025-02-08 01:15:22,514 INFO L231 Difference]: Finished difference. Result has 182 places, 208 transitions, 2091 flow [2025-02-08 01:15:22,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1649, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2091, PETRI_PLACES=182, PETRI_TRANSITIONS=208} [2025-02-08 01:15:22,517 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 162 predicate places. [2025-02-08 01:15:22,517 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 208 transitions, 2091 flow [2025-02-08 01:15:22,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:15:22,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:22,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:22,523 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 01:15:22,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:22,718 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 01:15:22,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:22,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2100346701, now seen corresponding path program 12 times [2025-02-08 01:15:22,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:22,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169322033] [2025-02-08 01:15:22,719 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:22,725 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:22,732 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:22,732 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:15:22,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:22,977 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 01:15:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169322033] [2025-02-08 01:15:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169322033] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631844883] [2025-02-08 01:15:22,977 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:22,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:22,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:22,982 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 01:15:22,985 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 01:15:23,005 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:23,032 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:23,032 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:15:23,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:23,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:23,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:23,174 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 01:15:23,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:23,486 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 01:15:23,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631844883] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:23,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:23,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2025-02-08 01:15:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122977829] [2025-02-08 01:15:23,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:23,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 01:15:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:23,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 01:15:23,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-02-08 01:15:23,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:23,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 208 transitions, 2091 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:23,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:23,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:23,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:24,418 INFO L124 PetriNetUnfolderBase]: 473/901 cut-off events. [2025-02-08 01:15:24,419 INFO L125 PetriNetUnfolderBase]: For 7403/7403 co-relation queries the response was YES. [2025-02-08 01:15:24,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5347 conditions, 901 events. 473/901 cut-off events. For 7403/7403 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4849 event pairs, 35 based on Foata normal form. 3/882 useless extension candidates. Maximal degree in co-relation 5244. Up to 688 conditions per place. [2025-02-08 01:15:24,426 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 194 selfloop transitions, 71 changer transitions 19/285 dead transitions. [2025-02-08 01:15:24,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 285 transitions, 3425 flow [2025-02-08 01:15:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 01:15:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 01:15:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 172 transitions. [2025-02-08 01:15:24,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-02-08 01:15:24,429 INFO L175 Difference]: Start difference. First operand has 182 places, 208 transitions, 2091 flow. Second operand 22 states and 172 transitions. [2025-02-08 01:15:24,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 285 transitions, 3425 flow [2025-02-08 01:15:24,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 285 transitions, 3165 flow, removed 102 selfloop flow, removed 11 redundant places. [2025-02-08 01:15:24,453 INFO L231 Difference]: Finished difference. Result has 194 places, 239 transitions, 2522 flow [2025-02-08 01:15:24,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2522, PETRI_PLACES=194, PETRI_TRANSITIONS=239} [2025-02-08 01:15:24,454 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 174 predicate places. [2025-02-08 01:15:24,454 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 239 transitions, 2522 flow [2025-02-08 01:15:24,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:24,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:24,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:24,460 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 01:15:24,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:24,657 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 01:15:24,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash -382002995, now seen corresponding path program 13 times [2025-02-08 01:15:24,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:24,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594928493] [2025-02-08 01:15:24,658 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:24,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:15:24,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:24,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:24,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:25,076 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 01:15:25,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594928493] [2025-02-08 01:15:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594928493] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113750088] [2025-02-08 01:15:25,076 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:25,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:25,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:25,083 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 01:15:25,084 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 01:15:25,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:15:25,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:25,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:25,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:25,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:25,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:25,338 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 01:15:25,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:25,678 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 01:15:25,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113750088] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:25,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:25,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-02-08 01:15:25,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496869275] [2025-02-08 01:15:25,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:25,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:15:25,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:25,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:15:25,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:15:25,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:25,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 239 transitions, 2522 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:25,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:25,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:25,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:27,035 INFO L124 PetriNetUnfolderBase]: 499/960 cut-off events. [2025-02-08 01:15:27,036 INFO L125 PetriNetUnfolderBase]: For 9538/9538 co-relation queries the response was YES. [2025-02-08 01:15:27,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 960 events. 499/960 cut-off events. For 9538/9538 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5279 event pairs, 35 based on Foata normal form. 3/939 useless extension candidates. Maximal degree in co-relation 5915. Up to 690 conditions per place. [2025-02-08 01:15:27,043 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 206 selfloop transitions, 96 changer transitions 12/315 dead transitions. [2025-02-08 01:15:27,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 315 transitions, 3994 flow [2025-02-08 01:15:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 01:15:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-08 01:15:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 219 transitions. [2025-02-08 01:15:27,045 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41954022988505746 [2025-02-08 01:15:27,045 INFO L175 Difference]: Start difference. First operand has 194 places, 239 transitions, 2522 flow. Second operand 29 states and 219 transitions. [2025-02-08 01:15:27,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 315 transitions, 3994 flow [2025-02-08 01:15:27,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 315 transitions, 3528 flow, removed 221 selfloop flow, removed 9 redundant places. [2025-02-08 01:15:27,080 INFO L231 Difference]: Finished difference. Result has 220 places, 258 transitions, 2867 flow [2025-02-08 01:15:27,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2867, PETRI_PLACES=220, PETRI_TRANSITIONS=258} [2025-02-08 01:15:27,080 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 200 predicate places. [2025-02-08 01:15:27,080 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 258 transitions, 2867 flow [2025-02-08 01:15:27,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:27,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:27,081 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:27,087 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 01:15:27,281 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,SelfDestructingSolverStorable21 [2025-02-08 01:15:27,282 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 01:15:27,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1063192491, now seen corresponding path program 14 times [2025-02-08 01:15:27,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:27,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760669775] [2025-02-08 01:15:27,283 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:27,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:27,285 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:27,293 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:27,293 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:27,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:27,649 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 01:15:27,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:27,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760669775] [2025-02-08 01:15:27,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760669775] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:27,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111842983] [2025-02-08 01:15:27,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:27,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:27,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:27,657 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 01:15:27,658 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 01:15:27,684 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:27,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:27,747 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:27,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:27,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:27,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:27,914 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 01:15:27,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:28,737 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 01:15:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111842983] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:28,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:28,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:15:28,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812410726] [2025-02-08 01:15:28,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:28,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:15:28,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:28,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:15:28,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:15:28,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:28,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 258 transitions, 2867 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:15:28,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:28,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:28,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:29,608 INFO L124 PetriNetUnfolderBase]: 522/1008 cut-off events. [2025-02-08 01:15:29,608 INFO L125 PetriNetUnfolderBase]: For 12154/12154 co-relation queries the response was YES. [2025-02-08 01:15:29,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6540 conditions, 1008 events. 522/1008 cut-off events. For 12154/12154 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5631 event pairs, 42 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 6393. Up to 855 conditions per place. [2025-02-08 01:15:29,617 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 240 selfloop transitions, 54 changer transitions 8/303 dead transitions. [2025-02-08 01:15:29,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 303 transitions, 3971 flow [2025-02-08 01:15:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 01:15:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 01:15:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 144 transitions. [2025-02-08 01:15:29,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2025-02-08 01:15:29,619 INFO L175 Difference]: Start difference. First operand has 220 places, 258 transitions, 2867 flow. Second operand 19 states and 144 transitions. [2025-02-08 01:15:29,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 303 transitions, 3971 flow [2025-02-08 01:15:29,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 303 transitions, 3489 flow, removed 212 selfloop flow, removed 14 redundant places. [2025-02-08 01:15:29,654 INFO L231 Difference]: Finished difference. Result has 225 places, 269 transitions, 2824 flow [2025-02-08 01:15:29,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2824, PETRI_PLACES=225, PETRI_TRANSITIONS=269} [2025-02-08 01:15:29,655 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 205 predicate places. [2025-02-08 01:15:29,655 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 269 transitions, 2824 flow [2025-02-08 01:15:29,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:15:29,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:29,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:29,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-08 01:15:29,859 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,SelfDestructingSolverStorable22 [2025-02-08 01:15:29,859 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 01:15:29,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:29,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1320879915, now seen corresponding path program 15 times [2025-02-08 01:15:29,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:29,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995422555] [2025-02-08 01:15:29,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:15:29,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:29,862 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:29,867 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:29,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:15:29,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:30,340 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 01:15:30,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:30,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995422555] [2025-02-08 01:15:30,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995422555] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:30,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978990968] [2025-02-08 01:15:30,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:15:30,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:30,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:30,344 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 01:15:30,350 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 01:15:30,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:30,391 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:30,392 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:15:30,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:30,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:30,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:30,532 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 01:15:30,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:30,859 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 01:15:30,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978990968] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:30,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:30,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2025-02-08 01:15:30,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95785240] [2025-02-08 01:15:30,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:30,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 01:15:30,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:30,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 01:15:30,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-02-08 01:15:30,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:30,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 269 transitions, 2824 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:30,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:30,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:30,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:31,863 INFO L124 PetriNetUnfolderBase]: 526/1022 cut-off events. [2025-02-08 01:15:31,863 INFO L125 PetriNetUnfolderBase]: For 11093/11093 co-relation queries the response was YES. [2025-02-08 01:15:31,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6418 conditions, 1022 events. 526/1022 cut-off events. For 11093/11093 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5735 event pairs, 41 based on Foata normal form. 3/994 useless extension candidates. Maximal degree in co-relation 6270. Up to 836 conditions per place. [2025-02-08 01:15:31,870 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 232 selfloop transitions, 68 changer transitions 15/316 dead transitions. [2025-02-08 01:15:31,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 316 transitions, 3796 flow [2025-02-08 01:15:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 01:15:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 01:15:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 167 transitions. [2025-02-08 01:15:31,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4033816425120773 [2025-02-08 01:15:31,873 INFO L175 Difference]: Start difference. First operand has 225 places, 269 transitions, 2824 flow. Second operand 23 states and 167 transitions. [2025-02-08 01:15:31,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 316 transitions, 3796 flow [2025-02-08 01:15:31,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 316 transitions, 3586 flow, removed 79 selfloop flow, removed 10 redundant places. [2025-02-08 01:15:31,919 INFO L231 Difference]: Finished difference. Result has 243 places, 274 transitions, 2897 flow [2025-02-08 01:15:31,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2897, PETRI_PLACES=243, PETRI_TRANSITIONS=274} [2025-02-08 01:15:31,921 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 223 predicate places. [2025-02-08 01:15:31,921 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 274 transitions, 2897 flow [2025-02-08 01:15:31,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:31,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:31,921 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:31,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-08 01:15:32,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 01:15:32,125 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 01:15:32,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:32,126 INFO L85 PathProgramCache]: Analyzing trace with hash -431158145, now seen corresponding path program 16 times [2025-02-08 01:15:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:32,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001428275] [2025-02-08 01:15:32,126 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:32,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:32,129 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:32,132 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 01:15:32,133 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:15:32,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:32,452 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 01:15:32,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:32,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001428275] [2025-02-08 01:15:32,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001428275] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:32,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641070262] [2025-02-08 01:15:32,453 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:32,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:32,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:32,455 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:32,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 01:15:32,479 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:32,500 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 01:15:32,500 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:15:32,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:32,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:32,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:32,682 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 01:15:32,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:33,015 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 01:15:33,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641070262] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:33,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:33,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-02-08 01:15:33,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495946594] [2025-02-08 01:15:33,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:33,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:15:33,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:33,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:15:33,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:15:33,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:33,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 274 transitions, 2897 flow. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:33,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:33,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:33,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:34,128 INFO L124 PetriNetUnfolderBase]: 521/999 cut-off events. [2025-02-08 01:15:34,128 INFO L125 PetriNetUnfolderBase]: For 10907/10907 co-relation queries the response was YES. [2025-02-08 01:15:34,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6268 conditions, 999 events. 521/999 cut-off events. For 10907/10907 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5530 event pairs, 38 based on Foata normal form. 3/971 useless extension candidates. Maximal degree in co-relation 6135. Up to 750 conditions per place. [2025-02-08 01:15:34,135 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 204 selfloop transitions, 97 changer transitions 13/315 dead transitions. [2025-02-08 01:15:34,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 315 transitions, 3731 flow [2025-02-08 01:15:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 01:15:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-02-08 01:15:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 183 transitions. [2025-02-08 01:15:34,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2025-02-08 01:15:34,137 INFO L175 Difference]: Start difference. First operand has 243 places, 274 transitions, 2897 flow. Second operand 24 states and 183 transitions. [2025-02-08 01:15:34,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 315 transitions, 3731 flow [2025-02-08 01:15:34,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 315 transitions, 3568 flow, removed 49 selfloop flow, removed 15 redundant places. [2025-02-08 01:15:34,177 INFO L231 Difference]: Finished difference. Result has 251 places, 274 transitions, 3043 flow [2025-02-08 01:15:34,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2735, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3043, PETRI_PLACES=251, PETRI_TRANSITIONS=274} [2025-02-08 01:15:34,178 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 231 predicate places. [2025-02-08 01:15:34,178 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 274 transitions, 3043 flow [2025-02-08 01:15:34,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:34,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:34,178 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:34,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 01:15:34,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-08 01:15:34,379 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 01:15:34,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1528891895, now seen corresponding path program 17 times [2025-02-08 01:15:34,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:34,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99581790] [2025-02-08 01:15:34,379 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:34,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:34,381 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:34,389 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:34,390 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:34,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:34,671 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 01:15:34,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:34,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99581790] [2025-02-08 01:15:34,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99581790] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:34,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975430744] [2025-02-08 01:15:34,672 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:34,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:34,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:34,674 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:34,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 01:15:34,700 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:34,715 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:34,715 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:34,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:34,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:34,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:35,081 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 01:15:35,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:35,862 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 01:15:35,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975430744] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:35,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:35,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:15:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816435312] [2025-02-08 01:15:35,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:35,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:15:35,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:35,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:15:35,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:15:35,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:35,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 274 transitions, 3043 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:15:35,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:35,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:35,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:38,659 INFO L124 PetriNetUnfolderBase]: 524/1010 cut-off events. [2025-02-08 01:15:38,659 INFO L125 PetriNetUnfolderBase]: For 11457/11457 co-relation queries the response was YES. [2025-02-08 01:15:38,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 1010 events. 524/1010 cut-off events. For 11457/11457 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5639 event pairs, 43 based on Foata normal form. 3/991 useless extension candidates. Maximal degree in co-relation 6424. Up to 922 conditions per place. [2025-02-08 01:15:38,668 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 258 selfloop transitions, 38 changer transitions 7/304 dead transitions. [2025-02-08 01:15:38,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 304 transitions, 3874 flow [2025-02-08 01:15:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 01:15:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 01:15:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 120 transitions. [2025-02-08 01:15:38,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39215686274509803 [2025-02-08 01:15:38,669 INFO L175 Difference]: Start difference. First operand has 251 places, 274 transitions, 3043 flow. Second operand 17 states and 120 transitions. [2025-02-08 01:15:38,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 304 transitions, 3874 flow [2025-02-08 01:15:38,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 304 transitions, 3592 flow, removed 61 selfloop flow, removed 19 redundant places. [2025-02-08 01:15:38,723 INFO L231 Difference]: Finished difference. Result has 248 places, 279 transitions, 2967 flow [2025-02-08 01:15:38,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2967, PETRI_PLACES=248, PETRI_TRANSITIONS=279} [2025-02-08 01:15:38,724 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 228 predicate places. [2025-02-08 01:15:38,724 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 279 transitions, 2967 flow [2025-02-08 01:15:38,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 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 01:15:38,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:38,725 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:38,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-08 01:15:38,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-08 01:15:38,929 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 01:15:38,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:38,930 INFO L85 PathProgramCache]: Analyzing trace with hash 189451811, now seen corresponding path program 18 times [2025-02-08 01:15:38,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:38,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138677179] [2025-02-08 01:15:38,930 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:38,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:38,932 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:38,936 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:38,936 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:15:38,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:39,193 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 01:15:39,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:39,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138677179] [2025-02-08 01:15:39,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138677179] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:39,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555934006] [2025-02-08 01:15:39,193 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:39,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:39,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:39,196 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:39,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-08 01:15:39,220 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-02-08 01:15:39,247 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:39,247 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-08 01:15:39,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:39,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:39,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:39,421 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 01:15:39,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:40,546 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 01:15:40,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555934006] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:40,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:40,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-02-08 01:15:40,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823590062] [2025-02-08 01:15:40,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:40,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 01:15:40,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:40,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 01:15:40,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-02-08 01:15:40,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:40,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 279 transitions, 2967 flow. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:40,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:40,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:40,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:41,286 INFO L124 PetriNetUnfolderBase]: 522/1006 cut-off events. [2025-02-08 01:15:41,286 INFO L125 PetriNetUnfolderBase]: For 9968/9968 co-relation queries the response was YES. [2025-02-08 01:15:41,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6279 conditions, 1006 events. 522/1006 cut-off events. For 9968/9968 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5598 event pairs, 42 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 6198. Up to 861 conditions per place. [2025-02-08 01:15:41,293 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 241 selfloop transitions, 57 changer transitions 7/306 dead transitions. [2025-02-08 01:15:41,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 306 transitions, 3767 flow [2025-02-08 01:15:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 01:15:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 01:15:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 116 transitions. [2025-02-08 01:15:41,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2025-02-08 01:15:41,295 INFO L175 Difference]: Start difference. First operand has 248 places, 279 transitions, 2967 flow. Second operand 15 states and 116 transitions. [2025-02-08 01:15:41,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 306 transitions, 3767 flow [2025-02-08 01:15:41,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 306 transitions, 3606 flow, removed 45 selfloop flow, removed 14 redundant places. [2025-02-08 01:15:41,345 INFO L231 Difference]: Finished difference. Result has 250 places, 282 transitions, 3026 flow [2025-02-08 01:15:41,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3026, PETRI_PLACES=250, PETRI_TRANSITIONS=282} [2025-02-08 01:15:41,345 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 230 predicate places. [2025-02-08 01:15:41,345 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 282 transitions, 3026 flow [2025-02-08 01:15:41,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:41,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:41,346 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:41,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-08 01:15:41,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-08 01:15:41,550 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 01:15:41,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1014037341, now seen corresponding path program 19 times [2025-02-08 01:15:41,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:41,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889837068] [2025-02-08 01:15:41,550 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:41,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:41,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:15:41,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:41,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:41,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:41,809 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 01:15:41,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:41,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889837068] [2025-02-08 01:15:41,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889837068] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:41,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235924507] [2025-02-08 01:15:41,810 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:41,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:41,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:41,811 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:41,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-08 01:15:41,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:15:41,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:15:41,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:41,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:41,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 01:15:41,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:42,022 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 01:15:42,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:42,774 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 01:15:42,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235924507] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:42,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:42,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-02-08 01:15:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654045236] [2025-02-08 01:15:42,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:42,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:15:42,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:42,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:15:42,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:15:42,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:42,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 282 transitions, 3026 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:42,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:42,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:42,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:43,673 INFO L124 PetriNetUnfolderBase]: 522/1003 cut-off events. [2025-02-08 01:15:43,673 INFO L125 PetriNetUnfolderBase]: For 9934/9934 co-relation queries the response was YES. [2025-02-08 01:15:43,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6318 conditions, 1003 events. 522/1003 cut-off events. For 9934/9934 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5572 event pairs, 38 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 6236. Up to 857 conditions per place. [2025-02-08 01:15:43,678 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 258 selfloop transitions, 54 changer transitions 8/321 dead transitions. [2025-02-08 01:15:43,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 321 transitions, 3922 flow [2025-02-08 01:15:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 01:15:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 01:15:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 163 transitions. [2025-02-08 01:15:43,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2025-02-08 01:15:43,680 INFO L175 Difference]: Start difference. First operand has 250 places, 282 transitions, 3026 flow. Second operand 22 states and 163 transitions. [2025-02-08 01:15:43,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 321 transitions, 3922 flow [2025-02-08 01:15:43,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 321 transitions, 3811 flow, removed 34 selfloop flow, removed 13 redundant places. [2025-02-08 01:15:43,730 INFO L231 Difference]: Finished difference. Result has 259 places, 284 transitions, 3166 flow [2025-02-08 01:15:43,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2912, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3166, PETRI_PLACES=259, PETRI_TRANSITIONS=284} [2025-02-08 01:15:43,731 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 239 predicate places. [2025-02-08 01:15:43,731 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 284 transitions, 3166 flow [2025-02-08 01:15:43,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:43,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:43,731 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:43,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-08 01:15:43,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 01:15:43,932 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 01:15:43,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:43,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1215091400, now seen corresponding path program 20 times [2025-02-08 01:15:43,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:43,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296050352] [2025-02-08 01:15:43,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:43,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:43,935 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:15:43,940 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:15:43,940 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:43,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:44,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296050352] [2025-02-08 01:15:44,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296050352] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101904738] [2025-02-08 01:15:44,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:44,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:44,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:44,596 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:44,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-08 01:15:44,617 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:15:44,651 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:15:44,651 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:44,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:44,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 01:15:44,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:46,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101904738] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:46,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:46,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2025-02-08 01:15:46,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426333472] [2025-02-08 01:15:46,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:46,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 01:15:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:46,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 01:15:46,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-02-08 01:15:46,777 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-02-08 01:15:46,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 284 transitions, 3166 flow. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:46,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:46,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-02-08 01:15:46,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:51,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 01:15:55,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 01:16:00,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-08 01:16:04,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []