./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/rlim_exit.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/float-benchs/rlim_exit.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 d77357c243d95f35d00bc89e7fc23b91d82935f320cfab6cb2f6a7d192f5b03f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 18:28:57,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 18:28:57,731 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 18:28:57,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 18:28:57,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 18:28:57,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 18:28:57,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 18:28:57,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 18:28:57,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 18:28:57,761 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 18:28:57,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 18:28:57,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 18:28:57,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 18:28:57,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 18:28:57,762 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 18:28:57,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 18:28:57,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 18:28:57,762 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 18:28:57,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 18:28:57,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 18:28:57,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 18:28:57,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 18:28:57,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 18:28:57,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 18:28:57,763 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 18:28:57,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 18:28:57,763 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 18:28:57,763 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 18:28:57,763 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 18:28:57,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 18:28:57,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 18:28:57,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 18:28:57,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:28:57,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 18:28:57,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 18:28:57,764 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 18:28:57,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 18:28:57,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 18:28:57,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 18:28:57,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 18:28:57,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 18:28:57,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 18:28:57,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 18:28:57,765 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 -> d77357c243d95f35d00bc89e7fc23b91d82935f320cfab6cb2f6a7d192f5b03f [2025-02-07 18:28:57,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 18:28:57,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 18:28:57,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 18:28:57,997 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 18:28:57,997 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 18:28:57,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_exit.c [2025-02-07 18:28:59,144 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3134a310d/07cd9827b1844a2087854c12aea9b191/FLAGb7e9fc51d [2025-02-07 18:28:59,395 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 18:28:59,396 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_exit.c [2025-02-07 18:28:59,405 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3134a310d/07cd9827b1844a2087854c12aea9b191/FLAGb7e9fc51d [2025-02-07 18:28:59,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3134a310d/07cd9827b1844a2087854c12aea9b191 [2025-02-07 18:28:59,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 18:28:59,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 18:28:59,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 18:28:59,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 18:28:59,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 18:28:59,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c4f609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59, skipping insertion in model container [2025-02-07 18:28:59,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,755 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 18:28:59,844 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/float-benchs/rlim_exit.c[446,459] [2025-02-07 18:28:59,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:28:59,862 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 18:28:59,869 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/float-benchs/rlim_exit.c[446,459] [2025-02-07 18:28:59,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 18:28:59,882 INFO L204 MainTranslator]: Completed translation [2025-02-07 18:28:59,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59 WrapperNode [2025-02-07 18:28:59,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 18:28:59,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 18:28:59,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 18:28:59,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 18:28:59,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,901 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2025-02-07 18:28:59,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 18:28:59,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 18:28:59,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 18:28:59,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 18:28:59,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,916 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]. [2025-02-07 18:28:59,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,919 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 18:28:59,923 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 18:28:59,923 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 18:28:59,923 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 18:28:59,924 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (1/1) ... [2025-02-07 18:28:59,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 18:28:59,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:28:59,947 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) [2025-02-07 18:28:59,955 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 [2025-02-07 18:28:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 18:28:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 18:28:59,971 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 18:28:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 18:28:59,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 18:28:59,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 18:29:00,013 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 18:29:00,019 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 18:29:00,119 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-02-07 18:29:00,119 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 18:29:00,128 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 18:29:00,128 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 18:29:00,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:29:00 BoogieIcfgContainer [2025-02-07 18:29:00,128 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 18:29:00,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 18:29:00,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 18:29:00,134 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 18:29:00,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 06:28:59" (1/3) ... [2025-02-07 18:29:00,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771aef90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:29:00, skipping insertion in model container [2025-02-07 18:29:00,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 06:28:59" (2/3) ... [2025-02-07 18:29:00,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771aef90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 06:29:00, skipping insertion in model container [2025-02-07 18:29:00,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 06:29:00" (3/3) ... [2025-02-07 18:29:00,138 INFO L128 eAbstractionObserver]: Analyzing ICFG rlim_exit.c [2025-02-07 18:29:00,148 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 18:29:00,151 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rlim_exit.c that has 2 procedures, 18 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 18:29:00,191 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 18:29:00,204 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;@4e3788ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 18:29:00,205 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 18:29:00,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 18:29:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-07 18:29:00,213 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:00,213 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-07 18:29:00,215 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:00,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1375286, now seen corresponding path program 1 times [2025-02-07 18:29:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:00,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403338114] [2025-02-07 18:29:00,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:29:00,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:00,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-07 18:29:00,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-07 18:29:00,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:29:00,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 18:29:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:29:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403338114] [2025-02-07 18:29:00,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403338114] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 18:29:00,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 18:29:00,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 18:29:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547403658] [2025-02-07 18:29:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 18:29:00,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 18:29:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:29:00,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 18:29:00,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 18:29:00,381 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-02-07 18:29:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:29:00,410 INFO L93 Difference]: Finished difference Result 42 states and 61 transitions. [2025-02-07 18:29:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 18:29:00,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2025-02-07 18:29:00,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:29:00,415 INFO L225 Difference]: With dead ends: 42 [2025-02-07 18:29:00,416 INFO L226 Difference]: Without dead ends: 22 [2025-02-07 18:29:00,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 18:29:00,421 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 18:29:00,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 35 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 18:29:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-07 18:29:00,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2025-02-07 18:29:00,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 18:29:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2025-02-07 18:29:00,450 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 4 [2025-02-07 18:29:00,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:29:00,451 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2025-02-07 18:29:00,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-02-07 18:29:00,451 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2025-02-07 18:29:00,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-07 18:29:00,452 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:00,452 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 18:29:00,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 18:29:00,453 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:00,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:00,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1760689814, now seen corresponding path program 1 times [2025-02-07 18:29:00,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:00,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771492844] [2025-02-07 18:29:00,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:29:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:00,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 18:29:00,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 18:29:00,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:29:00,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 18:29:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:29:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771492844] [2025-02-07 18:29:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771492844] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:29:00,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585502854] [2025-02-07 18:29:00,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 18:29:00,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:29:00,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:29:00,562 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) [2025-02-07 18:29:00,563 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 [2025-02-07 18:29:00,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 18:29:00,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 18:29:00,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:29:00,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:00,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 18:29:00,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:29:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 18:29:00,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:29:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 18:29:00,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585502854] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:29:00,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:29:00,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-07 18:29:00,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533730692] [2025-02-07 18:29:00,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:29:00,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 18:29:00,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:29:00,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 18:29:00,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 18:29:00,724 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-07 18:29:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:29:00,759 INFO L93 Difference]: Finished difference Result 40 states and 57 transitions. [2025-02-07 18:29:00,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 18:29:00,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 18 [2025-02-07 18:29:00,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:29:00,762 INFO L225 Difference]: With dead ends: 40 [2025-02-07 18:29:00,762 INFO L226 Difference]: Without dead ends: 37 [2025-02-07 18:29:00,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 18:29:00,763 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 18:29:00,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 52 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 18:29:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-07 18:29:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-02-07 18:29:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 18:29:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2025-02-07 18:29:00,774 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 18 [2025-02-07 18:29:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:29:00,774 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2025-02-07 18:29:00,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-07 18:29:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2025-02-07 18:29:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-07 18:29:00,780 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:00,780 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2025-02-07 18:29:00,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 18:29:00,980 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 [2025-02-07 18:29:00,980 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:00,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:00,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1028330934, now seen corresponding path program 2 times [2025-02-07 18:29:00,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:00,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175027741] [2025-02-07 18:29:00,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 18:29:00,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:01,003 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 60 statements into 2 equivalence classes. [2025-02-07 18:29:01,032 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-02-07 18:29:01,032 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 18:29:01,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-07 18:29:01,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:29:01,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175027741] [2025-02-07 18:29:01,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175027741] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:29:01,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381550359] [2025-02-07 18:29:01,208 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 18:29:01,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:29:01,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:29:01,211 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) [2025-02-07 18:29:01,212 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 [2025-02-07 18:29:01,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 60 statements into 2 equivalence classes. [2025-02-07 18:29:01,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-02-07 18:29:01,272 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 18:29:01,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:01,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 18:29:01,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:29:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-07 18:29:01,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:29:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-07 18:29:01,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381550359] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:29:01,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:29:01,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-07 18:29:01,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94136402] [2025-02-07 18:29:01,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:29:01,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 18:29:01,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:29:01,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 18:29:01,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-07 18:29:01,470 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 9 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-02-07 18:29:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:29:01,535 INFO L93 Difference]: Finished difference Result 82 states and 126 transitions. [2025-02-07 18:29:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 18:29:01,536 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 9 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 60 [2025-02-07 18:29:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:29:01,537 INFO L225 Difference]: With dead ends: 82 [2025-02-07 18:29:01,537 INFO L226 Difference]: Without dead ends: 79 [2025-02-07 18:29:01,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-07 18:29:01,538 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 18:29:01,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 82 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 18:29:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-07 18:29:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2025-02-07 18:29:01,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-07 18:29:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2025-02-07 18:29:01,546 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 60 [2025-02-07 18:29:01,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:29:01,546 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2025-02-07 18:29:01,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 9 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-02-07 18:29:01,547 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2025-02-07 18:29:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-02-07 18:29:01,550 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:01,550 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2025-02-07 18:29:01,560 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 [2025-02-07 18:29:01,754 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 [2025-02-07 18:29:01,754 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:01,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:01,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1019382774, now seen corresponding path program 3 times [2025-02-07 18:29:01,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:01,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380072823] [2025-02-07 18:29:01,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 18:29:01,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:01,782 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 144 statements into 16 equivalence classes. [2025-02-07 18:29:01,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 139 of 144 statements. [2025-02-07 18:29:01,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-02-07 18:29:01,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-02-07 18:29:02,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:29:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380072823] [2025-02-07 18:29:02,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380072823] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:29:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188498206] [2025-02-07 18:29:02,160 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 18:29:02,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:29:02,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:29:02,162 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) [2025-02-07 18:29:02,165 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 [2025-02-07 18:29:02,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 144 statements into 16 equivalence classes. [2025-02-07 18:29:02,266 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 139 of 144 statements. [2025-02-07 18:29:02,267 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-02-07 18:29:02,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:02,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 18:29:02,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:29:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-02-07 18:29:02,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:29:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-02-07 18:29:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188498206] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:29:02,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:29:02,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-07 18:29:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274925553] [2025-02-07 18:29:02,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:29:02,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 18:29:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:29:02,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 18:29:02,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 18:29:02,736 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 21 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 21 states have call predecessors, (42), 21 states have call successors, (42) [2025-02-07 18:29:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:29:02,958 INFO L93 Difference]: Finished difference Result 166 states and 264 transitions. [2025-02-07 18:29:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-07 18:29:02,958 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 21 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 21 states have call predecessors, (42), 21 states have call successors, (42) Word has length 144 [2025-02-07 18:29:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:29:02,960 INFO L225 Difference]: With dead ends: 166 [2025-02-07 18:29:02,960 INFO L226 Difference]: Without dead ends: 163 [2025-02-07 18:29:02,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 18:29:02,961 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 150 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 18:29:02,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 170 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 18:29:02,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-02-07 18:29:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2025-02-07 18:29:02,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 117 states have (on average 1.3846153846153846) internal successors, (162), 117 states have internal predecessors, (162), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-02-07 18:29:02,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 250 transitions. [2025-02-07 18:29:02,974 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 250 transitions. Word has length 144 [2025-02-07 18:29:02,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:29:02,974 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 250 transitions. [2025-02-07 18:29:02,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 21 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 21 states have call predecessors, (42), 21 states have call successors, (42) [2025-02-07 18:29:02,974 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 250 transitions. [2025-02-07 18:29:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2025-02-07 18:29:02,977 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:02,977 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1] [2025-02-07 18:29:02,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 18:29:03,178 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 [2025-02-07 18:29:03,178 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:03,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2030135178, now seen corresponding path program 4 times [2025-02-07 18:29:03,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:03,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39136863] [2025-02-07 18:29:03,181 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 18:29:03,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:03,218 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 312 statements into 2 equivalence classes. [2025-02-07 18:29:03,256 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 312 of 312 statements. [2025-02-07 18:29:03,256 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 18:29:03,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-07 18:29:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:29:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39136863] [2025-02-07 18:29:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39136863] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:29:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311795407] [2025-02-07 18:29:04,029 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 18:29:04,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:29:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:29:04,033 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) [2025-02-07 18:29:04,044 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 [2025-02-07 18:29:04,116 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 312 statements into 2 equivalence classes. [2025-02-07 18:29:04,181 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 312 of 312 statements. [2025-02-07 18:29:04,182 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 18:29:04,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:04,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-07 18:29:04,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:29:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-07 18:29:04,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:29:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-07 18:29:05,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311795407] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:29:05,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:29:05,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-02-07 18:29:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567251695] [2025-02-07 18:29:05,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:29:05,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-07 18:29:05,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:29:05,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-07 18:29:05,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-07 18:29:05,286 INFO L87 Difference]: Start difference. First operand 163 states and 250 transitions. Second operand has 48 states, 48 states have (on average 3.8541666666666665) internal successors, (185), 48 states have internal predecessors, (185), 44 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 44 states have call predecessors, (88), 44 states have call successors, (88) [2025-02-07 18:29:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:29:05,636 INFO L93 Difference]: Finished difference Result 334 states and 540 transitions. [2025-02-07 18:29:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-07 18:29:05,637 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.8541666666666665) internal successors, (185), 48 states have internal predecessors, (185), 44 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 44 states have call predecessors, (88), 44 states have call successors, (88) Word has length 312 [2025-02-07 18:29:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:29:05,640 INFO L225 Difference]: With dead ends: 334 [2025-02-07 18:29:05,640 INFO L226 Difference]: Without dead ends: 331 [2025-02-07 18:29:05,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-07 18:29:05,642 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 486 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 18:29:05,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 283 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 18:29:05,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2025-02-07 18:29:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2025-02-07 18:29:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 237 states have (on average 1.3924050632911393) internal successors, (330), 237 states have internal predecessors, (330), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-07 18:29:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 514 transitions. [2025-02-07 18:29:05,677 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 514 transitions. Word has length 312 [2025-02-07 18:29:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:29:05,677 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 514 transitions. [2025-02-07 18:29:05,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.8541666666666665) internal successors, (185), 48 states have internal predecessors, (185), 44 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 44 states have call predecessors, (88), 44 states have call successors, (88) [2025-02-07 18:29:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 514 transitions. [2025-02-07 18:29:05,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2025-02-07 18:29:05,691 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:05,691 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1] [2025-02-07 18:29:05,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 18:29:05,892 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 [2025-02-07 18:29:05,893 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:05,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:05,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1449865590, now seen corresponding path program 5 times [2025-02-07 18:29:05,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:05,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007229189] [2025-02-07 18:29:05,893 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 18:29:05,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:05,957 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 648 statements into 67 equivalence classes. [2025-02-07 18:29:06,144 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) and asserted 648 of 648 statements. [2025-02-07 18:29:06,145 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2025-02-07 18:29:06,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 23000 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2025-02-07 18:29:08,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:29:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007229189] [2025-02-07 18:29:08,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007229189] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:29:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112406879] [2025-02-07 18:29:08,449 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 18:29:08,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:29:08,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:29:08,452 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) [2025-02-07 18:29:08,456 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 [2025-02-07 18:29:08,579 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 648 statements into 67 equivalence classes. [2025-02-07 18:29:08,811 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) and asserted 648 of 648 statements. [2025-02-07 18:29:08,812 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2025-02-07 18:29:08,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:08,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-07 18:29:08,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:29:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 23000 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2025-02-07 18:29:09,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:29:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 23000 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2025-02-07 18:29:11,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112406879] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:29:11,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:29:11,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-02-07 18:29:11,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553437760] [2025-02-07 18:29:11,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:29:11,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-07 18:29:11,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:29:11,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-07 18:29:11,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-07 18:29:11,898 INFO L87 Difference]: Start difference. First operand 331 states and 514 transitions. Second operand has 96 states, 96 states have (on average 3.9270833333333335) internal successors, (377), 96 states have internal predecessors, (377), 92 states have call successors, (184), 1 states have call predecessors, (184), 1 states have return successors, (184), 92 states have call predecessors, (184), 92 states have call successors, (184) [2025-02-07 18:29:13,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:29:13,417 INFO L93 Difference]: Finished difference Result 670 states and 1092 transitions. [2025-02-07 18:29:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-07 18:29:13,418 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.9270833333333335) internal successors, (377), 96 states have internal predecessors, (377), 92 states have call successors, (184), 1 states have call predecessors, (184), 1 states have return successors, (184), 92 states have call predecessors, (184), 92 states have call successors, (184) Word has length 648 [2025-02-07 18:29:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:29:13,423 INFO L225 Difference]: With dead ends: 670 [2025-02-07 18:29:13,423 INFO L226 Difference]: Without dead ends: 667 [2025-02-07 18:29:13,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1343 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-07 18:29:13,425 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 1170 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 18:29:13,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 523 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 18:29:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2025-02-07 18:29:13,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2025-02-07 18:29:13,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 477 states have (on average 1.3962264150943395) internal successors, (666), 477 states have internal predecessors, (666), 188 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2025-02-07 18:29:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1042 transitions. [2025-02-07 18:29:13,458 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1042 transitions. Word has length 648 [2025-02-07 18:29:13,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:29:13,462 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 1042 transitions. [2025-02-07 18:29:13,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.9270833333333335) internal successors, (377), 96 states have internal predecessors, (377), 92 states have call successors, (184), 1 states have call predecessors, (184), 1 states have return successors, (184), 92 states have call predecessors, (184), 92 states have call successors, (184) [2025-02-07 18:29:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1042 transitions. [2025-02-07 18:29:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1321 [2025-02-07 18:29:13,493 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:13,494 INFO L218 NwaCegarLoop]: trace histogram [188, 188, 188, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1] [2025-02-07 18:29:13,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 18:29:13,697 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 [2025-02-07 18:29:13,697 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:13,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 253125494, now seen corresponding path program 6 times [2025-02-07 18:29:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937661147] [2025-02-07 18:29:13,699 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 18:29:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:13,767 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1320 statements into 134 equivalence classes. [2025-02-07 18:29:14,050 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 134 check-sat command(s) and asserted 1320 of 1320 statements. [2025-02-07 18:29:14,050 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 134 check-sat command(s) [2025-02-07 18:29:14,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 96632 backedges. 0 proven. 26320 refuted. 0 times theorem prover too weak. 70312 trivial. 0 not checked. [2025-02-07 18:29:23,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 18:29:23,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937661147] [2025-02-07 18:29:23,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937661147] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 18:29:23,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060637101] [2025-02-07 18:29:23,472 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 18:29:23,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 18:29:23,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 18:29:23,475 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) [2025-02-07 18:29:23,477 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 [2025-02-07 18:29:23,688 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1320 statements into 134 equivalence classes. [2025-02-07 18:29:24,375 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 134 check-sat command(s) and asserted 1320 of 1320 statements. [2025-02-07 18:29:24,376 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 134 check-sat command(s) [2025-02-07 18:29:24,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 18:29:24,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-07 18:29:24,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 18:29:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 96632 backedges. 0 proven. 26320 refuted. 0 times theorem prover too weak. 70312 trivial. 0 not checked. [2025-02-07 18:29:24,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 18:29:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 96632 backedges. 0 proven. 26320 refuted. 0 times theorem prover too weak. 70312 trivial. 0 not checked. [2025-02-07 18:29:33,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060637101] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 18:29:33,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 18:29:33,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-02-07 18:29:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122063048] [2025-02-07 18:29:33,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 18:29:33,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-07 18:29:33,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 18:29:33,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-07 18:29:33,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-07 18:29:33,507 INFO L87 Difference]: Start difference. First operand 667 states and 1042 transitions. Second operand has 193 states, 193 states have (on average 3.9689119170984455) internal successors, (766), 193 states have internal predecessors, (766), 189 states have call successors, (378), 1 states have call predecessors, (378), 1 states have return successors, (378), 189 states have call predecessors, (378), 189 states have call successors, (378) [2025-02-07 18:29:46,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 18:29:46,191 INFO L93 Difference]: Finished difference Result 1342 states and 2196 transitions. [2025-02-07 18:29:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-02-07 18:29:46,193 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 3.9689119170984455) internal successors, (766), 193 states have internal predecessors, (766), 189 states have call successors, (378), 1 states have call predecessors, (378), 1 states have return successors, (378), 189 states have call predecessors, (378), 189 states have call successors, (378) Word has length 1320 [2025-02-07 18:29:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 18:29:46,207 INFO L225 Difference]: With dead ends: 1342 [2025-02-07 18:29:46,211 INFO L226 Difference]: Without dead ends: 1339 [2025-02-07 18:29:46,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2735 GetRequests, 2544 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-07 18:29:46,218 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 3339 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3343 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-07 18:29:46,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3343 Valid, 989 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-07 18:29:46,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2025-02-07 18:29:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2025-02-07 18:29:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 957 states have (on average 1.3981191222570533) internal successors, (1338), 957 states have internal predecessors, (1338), 380 states have call successors, (380), 1 states have call predecessors, (380), 1 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-02-07 18:29:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2098 transitions. [2025-02-07 18:29:46,269 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2098 transitions. Word has length 1320 [2025-02-07 18:29:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 18:29:46,273 INFO L471 AbstractCegarLoop]: Abstraction has 1339 states and 2098 transitions. [2025-02-07 18:29:46,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 3.9689119170984455) internal successors, (766), 193 states have internal predecessors, (766), 189 states have call successors, (378), 1 states have call predecessors, (378), 1 states have return successors, (378), 189 states have call predecessors, (378), 189 states have call successors, (378) [2025-02-07 18:29:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2098 transitions. [2025-02-07 18:29:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2665 [2025-02-07 18:29:46,304 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 18:29:46,305 INFO L218 NwaCegarLoop]: trace histogram [380, 380, 380, 190, 190, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1] [2025-02-07 18:29:46,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 18:29:46,509 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 [2025-02-07 18:29:46,509 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 18:29:46,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 18:29:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1471465334, now seen corresponding path program 7 times [2025-02-07 18:29:46,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 18:29:46,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550159703] [2025-02-07 18:29:46,511 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 18:29:46,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 18:29:46,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2664 statements into 1 equivalence classes. [2025-02-07 18:29:46,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2664 of 2664 statements. [2025-02-07 18:29:46,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 18:29:46,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat