./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.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/loops-crafted-1/mono-crafted_6.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 a0e1e4b700be1f29c3e51242b4a74b80feb10d65ba6788a48a42ab27b5c7017d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:20:46,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:20:46,475 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:20:46,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:20:46,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:20:46,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:20:46,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:20:46,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:20:46,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:20:46,515 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:20:46,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:20:46,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:20:46,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:20:46,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:20:46,516 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:20:46,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:20:46,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:20:46,517 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:20:46,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:20:46,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:20:46,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:20:46,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:20:46,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:20:46,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:20:46,517 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:20:46,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:20:46,518 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:20:46,518 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:20:46,518 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:20:46,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:20:46,518 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:20:46,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:20:46,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:20:46,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:20:46,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:20:46,519 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:20:46,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:20:46,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:20:46,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:20:46,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:20:46,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:20:46,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:20:46,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:20:46,520 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 -> a0e1e4b700be1f29c3e51242b4a74b80feb10d65ba6788a48a42ab27b5c7017d [2025-02-07 20:20:46,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:20:46,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:20:46,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:20:46,799 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:20:46,799 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:20:46,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c [2025-02-07 20:20:47,995 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f6cf8678b/68fd99d324c44548a8fafddc5992e6b5/FLAGf12fbbd88 [2025-02-07 20:20:48,242 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:20:48,243 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_6.c [2025-02-07 20:20:48,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f6cf8678b/68fd99d324c44548a8fafddc5992e6b5/FLAGf12fbbd88 [2025-02-07 20:20:48,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f6cf8678b/68fd99d324c44548a8fafddc5992e6b5 [2025-02-07 20:20:48,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:20:48,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:20:48,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:20:48,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:20:48,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:20:48,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44452acf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48, skipping insertion in model container [2025-02-07 20:20:48,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,596 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:20:48,731 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/loops-crafted-1/mono-crafted_6.c[318,331] [2025-02-07 20:20:48,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:20:48,757 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:20:48,767 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/loops-crafted-1/mono-crafted_6.c[318,331] [2025-02-07 20:20:48,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:20:48,784 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:20:48,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48 WrapperNode [2025-02-07 20:20:48,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:20:48,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:20:48,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:20:48,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:20:48,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,813 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2025-02-07 20:20:48,814 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:20:48,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:20:48,815 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:20:48,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:20:48,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,823 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,832 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 20:20:48,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,839 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:20:48,844 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:20:48,844 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:20:48,844 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:20:48,845 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (1/1) ... [2025-02-07 20:20:48,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:20:48,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:48,876 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 20:20:48,880 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 20:20:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:20:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:20:48,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:20:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:20:48,940 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:20:48,941 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:20:49,019 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-07 20:20:49,019 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:20:49,026 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:20:49,026 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:20:49,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:20:49 BoogieIcfgContainer [2025-02-07 20:20:49,026 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:20:49,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:20:49,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:20:49,032 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:20:49,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:20:48" (1/3) ... [2025-02-07 20:20:49,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f126be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:20:49, skipping insertion in model container [2025-02-07 20:20:49,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:20:48" (2/3) ... [2025-02-07 20:20:49,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f126be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:20:49, skipping insertion in model container [2025-02-07 20:20:49,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:20:49" (3/3) ... [2025-02-07 20:20:49,035 INFO L128 eAbstractionObserver]: Analyzing ICFG mono-crafted_6.c [2025-02-07 20:20:49,049 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:20:49,051 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mono-crafted_6.c that has 1 procedures, 11 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 20:20:49,103 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:20:49,115 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;@7a0fa404, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:20:49,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:20:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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 20:20:49,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-07 20:20:49,124 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:49,126 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-07 20:20:49,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:49,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1285913, now seen corresponding path program 1 times [2025-02-07 20:20:49,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:49,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028944530] [2025-02-07 20:20:49,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:20:49,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:49,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-07 20:20:49,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-07 20:20:49,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:49,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:49,304 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 20:20:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:49,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028944530] [2025-02-07 20:20:49,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028944530] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:20:49,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:20:49,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 20:20:49,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008643088] [2025-02-07 20:20:49,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:20:49,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 20:20:49,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:49,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 20:20:49,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 20:20:49,332 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 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) 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 20:20:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:49,365 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2025-02-07 20:20:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 20:20:49,367 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 20:20:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:49,372 INFO L225 Difference]: With dead ends: 23 [2025-02-07 20:20:49,373 INFO L226 Difference]: Without dead ends: 10 [2025-02-07 20:20:49,375 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 20:20:49,380 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:49,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:20:49,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-02-07 20:20:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2025-02-07 20:20:49,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 20:20:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2025-02-07 20:20:49,400 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 4 [2025-02-07 20:20:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:49,400 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2025-02-07 20:20:49,400 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 20:20:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2025-02-07 20:20:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-07 20:20:49,401 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:49,401 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-07 20:20:49,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 20:20:49,401 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:49,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:49,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1241395870, now seen corresponding path program 1 times [2025-02-07 20:20:49,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:49,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950902872] [2025-02-07 20:20:49,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:20:49,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:49,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-07 20:20:49,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-07 20:20:49,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:49,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:20:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950902872] [2025-02-07 20:20:49,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950902872] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436000092] [2025-02-07 20:20:49,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:20:49,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:49,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:49,468 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 20:20:49,472 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 20:20:49,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-07 20:20:49,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-07 20:20:49,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:49,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:49,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 20:20:49,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:20:49,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:20:49,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436000092] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:49,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:49,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-07 20:20:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78874374] [2025-02-07 20:20:49,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:49,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 20:20:49,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:49,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 20:20:49,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:20:49,598 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 20:20:49,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:49,637 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2025-02-07 20:20:49,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 20:20:49,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 6 [2025-02-07 20:20:49,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:49,639 INFO L225 Difference]: With dead ends: 23 [2025-02-07 20:20:49,639 INFO L226 Difference]: Without dead ends: 16 [2025-02-07 20:20:49,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:20:49,640 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:49,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:20:49,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-07 20:20:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2025-02-07 20:20:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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 20:20:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-02-07 20:20:49,643 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2025-02-07 20:20:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:49,644 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-02-07 20:20:49,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 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 20:20:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-02-07 20:20:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-07 20:20:49,645 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:49,645 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:49,653 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 20:20:49,846 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 20:20:49,846 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:49,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1877867130, now seen corresponding path program 1 times [2025-02-07 20:20:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:49,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694754430] [2025-02-07 20:20:49,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:20:49,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:49,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-07 20:20:49,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-07 20:20:49,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:49,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:20:49,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:49,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694754430] [2025-02-07 20:20:49,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694754430] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:49,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754629967] [2025-02-07 20:20:49,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:20:49,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:49,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:49,940 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 20:20:49,943 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 20:20:49,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-07 20:20:49,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-07 20:20:49,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:49,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:49,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 20:20:49,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:20:50,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:20:50,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754629967] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:50,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:50,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-07 20:20:50,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174270433] [2025-02-07 20:20:50,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:50,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 20:20:50,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:50,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 20:20:50,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:20:50,077 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 20:20:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:50,145 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2025-02-07 20:20:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 20:20:50,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 12 [2025-02-07 20:20:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:50,147 INFO L225 Difference]: With dead ends: 36 [2025-02-07 20:20:50,147 INFO L226 Difference]: Without dead ends: 27 [2025-02-07 20:20:50,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:20:50,149 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:50,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 17 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:20:50,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-07 20:20:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-07 20:20:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2025-02-07 20:20:50,155 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 12 [2025-02-07 20:20:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:50,155 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2025-02-07 20:20:50,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 20:20:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2025-02-07 20:20:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-07 20:20:50,158 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:50,158 INFO L218 NwaCegarLoop]: trace histogram [7, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2025-02-07 20:20:50,165 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 20:20:50,358 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 20:20:50,359 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:50,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2079310351, now seen corresponding path program 1 times [2025-02-07 20:20:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:50,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792516321] [2025-02-07 20:20:50,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:20:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:50,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-07 20:20:50,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 20:20:50,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:50,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:20:50,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:50,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792516321] [2025-02-07 20:20:50,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792516321] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:50,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84924102] [2025-02-07 20:20:50,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:20:50,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:50,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:50,522 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 20:20:50,524 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 20:20:50,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-07 20:20:50,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 20:20:50,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:50,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:50,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 20:20:50,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:20:50,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:20:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84924102] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:50,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:50,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-07 20:20:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153556534] [2025-02-07 20:20:50,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:50,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-07 20:20:50,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:50,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-07 20:20:50,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2025-02-07 20:20:50,680 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 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 20:20:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:50,742 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2025-02-07 20:20:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 20:20:50,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 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 26 [2025-02-07 20:20:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:50,743 INFO L225 Difference]: With dead ends: 57 [2025-02-07 20:20:50,743 INFO L226 Difference]: Without dead ends: 37 [2025-02-07 20:20:50,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2025-02-07 20:20:50,744 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:50,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:20:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-07 20:20:50,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-02-07 20:20:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 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 20:20:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2025-02-07 20:20:50,749 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 26 [2025-02-07 20:20:50,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:50,750 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2025-02-07 20:20:50,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 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 20:20:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2025-02-07 20:20:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-07 20:20:50,750 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:50,751 INFO L218 NwaCegarLoop]: trace histogram [12, 8, 4, 4, 3, 1, 1, 1, 1, 1] [2025-02-07 20:20:50,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-07 20:20:50,955 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 20:20:50,955 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:50,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:50,955 INFO L85 PathProgramCache]: Analyzing trace with hash 93876810, now seen corresponding path program 2 times [2025-02-07 20:20:50,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:50,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106491997] [2025-02-07 20:20:50,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:20:50,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:50,965 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-07 20:20:50,980 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 20:20:50,981 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:20:50,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:20:51,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:51,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106491997] [2025-02-07 20:20:51,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106491997] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:51,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398751538] [2025-02-07 20:20:51,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:20:51,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:51,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:51,224 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 20:20:51,226 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 20:20:51,253 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-07 20:20:51,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 20:20:51,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:20:51,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:51,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-07 20:20:51,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:20:51,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:20:51,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398751538] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:51,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:51,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-02-07 20:20:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861653307] [2025-02-07 20:20:51,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:51,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-07 20:20:51,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:51,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-07 20:20:51,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2025-02-07 20:20:51,520 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 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 20:20:51,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:51,579 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2025-02-07 20:20:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-07 20:20:51,579 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 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 36 [2025-02-07 20:20:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:51,581 INFO L225 Difference]: With dead ends: 77 [2025-02-07 20:20:51,581 INFO L226 Difference]: Without dead ends: 57 [2025-02-07 20:20:51,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2025-02-07 20:20:51,582 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:51,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:20:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-07 20:20:51,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-02-07 20:20:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2025-02-07 20:20:51,593 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 36 [2025-02-07 20:20:51,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:51,594 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2025-02-07 20:20:51,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 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 20:20:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2025-02-07 20:20:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 20:20:51,595 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:51,595 INFO L218 NwaCegarLoop]: trace histogram [22, 18, 4, 4, 3, 1, 1, 1, 1, 1] [2025-02-07 20:20:51,602 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 20:20:51,795 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 20:20:51,796 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:51,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:51,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1434802492, now seen corresponding path program 3 times [2025-02-07 20:20:51,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:51,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72920762] [2025-02-07 20:20:51,796 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:20:51,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:51,808 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 23 equivalence classes. [2025-02-07 20:20:51,815 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 14 of 56 statements. [2025-02-07 20:20:51,816 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 20:20:51,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2025-02-07 20:20:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72920762] [2025-02-07 20:20:51,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72920762] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893207809] [2025-02-07 20:20:51,845 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:20:51,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:51,848 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 20:20:51,850 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 20:20:51,883 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 23 equivalence classes. [2025-02-07 20:20:51,891 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 14 of 56 statements. [2025-02-07 20:20:51,891 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 20:20:51,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:51,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 20:20:51,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2025-02-07 20:20:51,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2025-02-07 20:20:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893207809] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:51,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2025-02-07 20:20:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395040521] [2025-02-07 20:20:51,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:51,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 20:20:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:51,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 20:20:51,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:20:51,933 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:51,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:51,984 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2025-02-07 20:20:51,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 20:20:51,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-02-07 20:20:51,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:51,985 INFO L225 Difference]: With dead ends: 72 [2025-02-07 20:20:51,985 INFO L226 Difference]: Without dead ends: 69 [2025-02-07 20:20:51,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:20:51,989 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:51,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:20:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-07 20:20:51,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-02-07 20:20:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 68 states have internal predecessors, (80), 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 20:20:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2025-02-07 20:20:52,000 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 56 [2025-02-07 20:20:52,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:52,000 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2025-02-07 20:20:52,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2025-02-07 20:20:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-07 20:20:52,002 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:52,002 INFO L218 NwaCegarLoop]: trace histogram [25, 18, 7, 7, 4, 3, 1, 1, 1, 1] [2025-02-07 20:20:52,009 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 20:20:52,202 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 20:20:52,203 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:52,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 56386853, now seen corresponding path program 4 times [2025-02-07 20:20:52,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:52,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312253024] [2025-02-07 20:20:52,203 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:20:52,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:52,216 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 68 statements into 2 equivalence classes. [2025-02-07 20:20:52,237 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-02-07 20:20:52,238 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:20:52,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 247 proven. 342 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-02-07 20:20:52,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:52,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312253024] [2025-02-07 20:20:52,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312253024] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:52,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301440946] [2025-02-07 20:20:52,803 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:20:52,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:52,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:52,805 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 20:20:52,808 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 20:20:52,842 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 68 statements into 2 equivalence classes. [2025-02-07 20:20:52,867 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-02-07 20:20:52,867 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:20:52,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:52,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-07 20:20:52,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 247 proven. 342 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-02-07 20:20:52,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 247 proven. 342 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-02-07 20:20:53,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301440946] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:53,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:53,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2025-02-07 20:20:53,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688883909] [2025-02-07 20:20:53,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:53,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-07 20:20:53,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:53,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-07 20:20:53,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2025-02-07 20:20:53,597 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand has 40 states, 40 states have (on average 2.15) internal successors, (86), 39 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:53,736 INFO L93 Difference]: Finished difference Result 141 states and 183 transitions. [2025-02-07 20:20:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-07 20:20:53,737 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.15) internal successors, (86), 39 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-02-07 20:20:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:53,738 INFO L225 Difference]: With dead ends: 141 [2025-02-07 20:20:53,738 INFO L226 Difference]: Without dead ends: 109 [2025-02-07 20:20:53,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2025-02-07 20:20:53,739 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:53,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:20:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-02-07 20:20:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-02-07 20:20:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1111111111111112) internal successors, (120), 108 states have internal predecessors, (120), 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 20:20:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2025-02-07 20:20:53,754 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 68 [2025-02-07 20:20:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:53,754 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2025-02-07 20:20:53,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.15) internal successors, (86), 39 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2025-02-07 20:20:53,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-02-07 20:20:53,756 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:53,756 INFO L218 NwaCegarLoop]: trace histogram [45, 38, 7, 7, 4, 3, 1, 1, 1, 1] [2025-02-07 20:20:53,764 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 20:20:53,961 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 20:20:53,961 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:53,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash 453162505, now seen corresponding path program 5 times [2025-02-07 20:20:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:53,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121917902] [2025-02-07 20:20:53,962 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:20:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:53,979 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 108 statements into 46 equivalence classes. [2025-02-07 20:20:54,025 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) and asserted 86 of 108 statements. [2025-02-07 20:20:54,025 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2025-02-07 20:20:54,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 622 proven. 21 refuted. 0 times theorem prover too weak. 1424 trivial. 0 not checked. [2025-02-07 20:20:54,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:54,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121917902] [2025-02-07 20:20:54,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121917902] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:54,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941215246] [2025-02-07 20:20:54,119 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:20:54,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:54,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:54,122 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:20:54,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 20:20:54,171 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 108 statements into 46 equivalence classes. [2025-02-07 20:20:54,219 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) and asserted 86 of 108 statements. [2025-02-07 20:20:54,219 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2025-02-07 20:20:54,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:54,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-07 20:20:54,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 1192 proven. 351 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2025-02-07 20:20:54,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 1192 proven. 351 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2025-02-07 20:20:55,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941215246] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:55,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:55,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 21, 21] total 40 [2025-02-07 20:20:55,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7055819] [2025-02-07 20:20:55,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:55,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-07 20:20:55,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:55,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-07 20:20:55,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2025-02-07 20:20:55,103 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 40 states, 40 states have (on average 2.825) internal successors, (113), 40 states have internal predecessors, (113), 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 20:20:55,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:55,371 INFO L93 Difference]: Finished difference Result 281 states and 373 transitions. [2025-02-07 20:20:55,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-07 20:20:55,371 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.825) internal successors, (113), 40 states have internal predecessors, (113), 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 108 [2025-02-07 20:20:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:55,373 INFO L225 Difference]: With dead ends: 281 [2025-02-07 20:20:55,373 INFO L226 Difference]: Without dead ends: 249 [2025-02-07 20:20:55,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2025-02-07 20:20:55,374 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 106 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:55,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 52 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:20:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2025-02-07 20:20:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2025-02-07 20:20:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.189516129032258) internal successors, (295), 248 states have internal predecessors, (295), 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 20:20:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 295 transitions. [2025-02-07 20:20:55,405 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 295 transitions. Word has length 108 [2025-02-07 20:20:55,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:55,405 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 295 transitions. [2025-02-07 20:20:55,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.825) internal successors, (113), 40 states have internal predecessors, (113), 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 20:20:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 295 transitions. [2025-02-07 20:20:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-02-07 20:20:55,410 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:55,411 INFO L218 NwaCegarLoop]: trace histogram [80, 42, 42, 38, 38, 4, 1, 1, 1, 1] [2025-02-07 20:20:55,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-07 20:20:55,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:55,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:55,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:55,615 INFO L85 PathProgramCache]: Analyzing trace with hash 581239727, now seen corresponding path program 6 times [2025-02-07 20:20:55,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:55,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036901105] [2025-02-07 20:20:55,616 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:20:55,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:55,632 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 248 statements into 81 equivalence classes. [2025-02-07 20:20:55,642 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 62 of 248 statements. [2025-02-07 20:20:55,642 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-02-07 20:20:55,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1021 proven. 32 refuted. 0 times theorem prover too weak. 7069 trivial. 0 not checked. [2025-02-07 20:20:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036901105] [2025-02-07 20:20:55,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036901105] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:55,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570412193] [2025-02-07 20:20:55,725 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:20:55,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:55,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:55,727 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:20:55,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-07 20:20:55,787 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 248 statements into 81 equivalence classes. [2025-02-07 20:20:55,815 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 62 of 248 statements. [2025-02-07 20:20:55,815 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-02-07 20:20:55,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:55,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:20:55,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1021 proven. 32 refuted. 0 times theorem prover too weak. 7069 trivial. 0 not checked. [2025-02-07 20:20:55,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1021 proven. 32 refuted. 0 times theorem prover too weak. 7069 trivial. 0 not checked. [2025-02-07 20:20:55,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570412193] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:55,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:55,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-07 20:20:55,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428543084] [2025-02-07 20:20:55,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:55,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 20:20:55,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:55,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 20:20:55,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-02-07 20:20:55,959 INFO L87 Difference]: Start difference. First operand 249 states and 295 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 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 20:20:56,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:56,033 INFO L93 Difference]: Finished difference Result 276 states and 339 transitions. [2025-02-07 20:20:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 20:20:56,033 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 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 248 [2025-02-07 20:20:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:56,036 INFO L225 Difference]: With dead ends: 276 [2025-02-07 20:20:56,037 INFO L226 Difference]: Without dead ends: 273 [2025-02-07 20:20:56,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-02-07 20:20:56,038 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:56,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 21 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:20:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2025-02-07 20:20:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2025-02-07 20:20:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.2169117647058822) internal successors, (331), 272 states have internal predecessors, (331), 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 20:20:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 331 transitions. [2025-02-07 20:20:56,060 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 331 transitions. Word has length 248 [2025-02-07 20:20:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:56,062 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 331 transitions. [2025-02-07 20:20:56,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 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 20:20:56,062 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 331 transitions. [2025-02-07 20:20:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2025-02-07 20:20:56,069 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:56,069 INFO L218 NwaCegarLoop]: trace histogram [86, 48, 48, 38, 38, 10, 1, 1, 1, 1] [2025-02-07 20:20:56,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 20:20:56,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:56,270 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:56,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:56,270 INFO L85 PathProgramCache]: Analyzing trace with hash -231727871, now seen corresponding path program 7 times [2025-02-07 20:20:56,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:56,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964142801] [2025-02-07 20:20:56,271 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:20:56,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:56,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 272 statements into 1 equivalence classes. [2025-02-07 20:20:56,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 272 of 272 statements. [2025-02-07 20:20:56,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:56,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9652 backedges. 3705 proven. 1482 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-02-07 20:20:58,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:58,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964142801] [2025-02-07 20:20:58,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964142801] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:58,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466258181] [2025-02-07 20:20:58,580 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:20:58,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:58,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:58,583 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:20:58,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-07 20:20:58,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 272 statements into 1 equivalence classes. [2025-02-07 20:20:58,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 272 of 272 statements. [2025-02-07 20:20:58,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:58,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:58,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 78 conjuncts are in the unsatisfiable core [2025-02-07 20:20:58,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:58,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9652 backedges. 3705 proven. 1482 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-02-07 20:20:58,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:21:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9652 backedges. 3705 proven. 1482 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-02-07 20:21:00,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466258181] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:21:00,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:21:00,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 79 [2025-02-07 20:21:00,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506735765] [2025-02-07 20:21:00,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:21:00,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2025-02-07 20:21:00,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:21:00,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2025-02-07 20:21:00,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2025-02-07 20:21:00,781 INFO L87 Difference]: Start difference. First operand 273 states and 331 transitions. Second operand has 80 states, 80 states have (on average 2.075) internal successors, (166), 79 states have internal predecessors, (166), 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 20:21:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:21:00,999 INFO L93 Difference]: Finished difference Result 549 states and 705 transitions. [2025-02-07 20:21:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-02-07 20:21:01,000 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.075) internal successors, (166), 79 states have internal predecessors, (166), 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 272 [2025-02-07 20:21:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:21:01,001 INFO L225 Difference]: With dead ends: 549 [2025-02-07 20:21:01,001 INFO L226 Difference]: Without dead ends: 353 [2025-02-07 20:21:01,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2025-02-07 20:21:01,004 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:21:01,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:21:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2025-02-07 20:21:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2025-02-07 20:21:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.1676136363636365) internal successors, (411), 352 states have internal predecessors, (411), 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 20:21:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 411 transitions. [2025-02-07 20:21:01,017 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 411 transitions. Word has length 272 [2025-02-07 20:21:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:21:01,018 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 411 transitions. [2025-02-07 20:21:01,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.075) internal successors, (166), 79 states have internal predecessors, (166), 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 20:21:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 411 transitions. [2025-02-07 20:21:01,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2025-02-07 20:21:01,022 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:21:01,022 INFO L218 NwaCegarLoop]: trace histogram [126, 78, 48, 48, 38, 10, 1, 1, 1, 1] [2025-02-07 20:21:01,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-07 20:21:01,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:01,223 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:21:01,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:21:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1360912073, now seen corresponding path program 8 times [2025-02-07 20:21:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:21:01,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651264203] [2025-02-07 20:21:01,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:21:01,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:21:01,244 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 352 statements into 2 equivalence classes. [2025-02-07 20:21:01,366 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 352 of 352 statements. [2025-02-07 20:21:01,367 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:21:01,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18132 backedges. 7505 proven. 6162 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-02-07 20:21:06,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:21:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651264203] [2025-02-07 20:21:06,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651264203] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:21:06,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895421917] [2025-02-07 20:21:06,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:21:06,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:06,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:21:06,772 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:21:06,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-07 20:21:06,845 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 352 statements into 2 equivalence classes. [2025-02-07 20:21:06,931 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 352 of 352 statements. [2025-02-07 20:21:06,932 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:21:06,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:06,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 158 conjuncts are in the unsatisfiable core [2025-02-07 20:21:06,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:21:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18132 backedges. 7505 proven. 6162 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-02-07 20:21:07,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:21:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18132 backedges. 7505 proven. 6162 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-02-07 20:21:13,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895421917] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:21:13,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:21:13,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 159 [2025-02-07 20:21:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104973129] [2025-02-07 20:21:13,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:21:13,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2025-02-07 20:21:13,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:21:13,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2025-02-07 20:21:13,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2025-02-07 20:21:13,558 INFO L87 Difference]: Start difference. First operand 353 states and 411 transitions. Second operand has 160 states, 160 states have (on average 2.0375) internal successors, (326), 159 states have internal predecessors, (326), 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 20:21:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:21:14,091 INFO L93 Difference]: Finished difference Result 709 states and 905 transitions. [2025-02-07 20:21:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2025-02-07 20:21:14,092 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 160 states have (on average 2.0375) internal successors, (326), 159 states have internal predecessors, (326), 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 352 [2025-02-07 20:21:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:21:14,094 INFO L225 Difference]: With dead ends: 709 [2025-02-07 20:21:14,094 INFO L226 Difference]: Without dead ends: 513 [2025-02-07 20:21:14,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=12720, Invalid=12720, Unknown=0, NotChecked=0, Total=25440 [2025-02-07 20:21:14,100 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 20:21:14,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 20:21:14,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2025-02-07 20:21:14,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2025-02-07 20:21:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.115234375) internal successors, (571), 512 states have internal predecessors, (571), 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 20:21:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 571 transitions. [2025-02-07 20:21:14,150 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 571 transitions. Word has length 352 [2025-02-07 20:21:14,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:21:14,150 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 571 transitions. [2025-02-07 20:21:14,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 160 states have (on average 2.0375) internal successors, (326), 159 states have internal predecessors, (326), 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 20:21:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 571 transitions. [2025-02-07 20:21:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2025-02-07 20:21:14,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:21:14,169 INFO L218 NwaCegarLoop]: trace histogram [206, 158, 48, 48, 38, 10, 1, 1, 1, 1] [2025-02-07 20:21:14,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 20:21:14,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:14,370 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:21:14,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:21:14,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1224536665, now seen corresponding path program 9 times [2025-02-07 20:21:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:21:14,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972122752] [2025-02-07 20:21:14,370 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:21:14,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:21:14,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 512 statements into 207 equivalence classes. [2025-02-07 20:21:14,410 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) and asserted 68 of 512 statements. [2025-02-07 20:21:14,410 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2025-02-07 20:21:14,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 44692 backedges. 4903 proven. 200 refuted. 0 times theorem prover too weak. 39589 trivial. 0 not checked. [2025-02-07 20:21:14,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:21:14,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972122752] [2025-02-07 20:21:14,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972122752] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:21:14,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087225908] [2025-02-07 20:21:14,525 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:21:14,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:14,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:21:14,527 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:21:14,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-07 20:21:14,642 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 512 statements into 207 equivalence classes. [2025-02-07 20:21:14,667 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) and asserted 68 of 512 statements. [2025-02-07 20:21:14,668 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2025-02-07 20:21:14,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:14,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-07 20:21:14,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:21:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 44692 backedges. 4903 proven. 200 refuted. 0 times theorem prover too weak. 39589 trivial. 0 not checked. [2025-02-07 20:21:14,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:21:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 44692 backedges. 4903 proven. 200 refuted. 0 times theorem prover too weak. 39589 trivial. 0 not checked. [2025-02-07 20:21:14,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087225908] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:21:14,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:21:14,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2025-02-07 20:21:14,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915831176] [2025-02-07 20:21:14,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:21:14,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-07 20:21:14,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:21:14,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-07 20:21:14,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2025-02-07 20:21:14,946 INFO L87 Difference]: Start difference. First operand 513 states and 571 transitions. Second operand has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 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 20:21:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:21:15,085 INFO L93 Difference]: Finished difference Result 564 states and 657 transitions. [2025-02-07 20:21:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-07 20:21:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 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 512 [2025-02-07 20:21:15,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:21:15,090 INFO L225 Difference]: With dead ends: 564 [2025-02-07 20:21:15,091 INFO L226 Difference]: Without dead ends: 561 [2025-02-07 20:21:15,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1013 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2025-02-07 20:21:15,092 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:21:15,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:21:15,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-02-07 20:21:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2025-02-07 20:21:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 560 states have (on average 1.1482142857142856) internal successors, (643), 560 states have internal predecessors, (643), 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 20:21:15,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 643 transitions. [2025-02-07 20:21:15,140 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 643 transitions. Word has length 512 [2025-02-07 20:21:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:21:15,145 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 643 transitions. [2025-02-07 20:21:15,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 states have internal predecessors, (94), 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 20:21:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 643 transitions. [2025-02-07 20:21:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2025-02-07 20:21:15,148 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:21:15,148 INFO L218 NwaCegarLoop]: trace histogram [218, 158, 60, 60, 38, 22, 1, 1, 1, 1] [2025-02-07 20:21:15,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-07 20:21:15,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-07 20:21:15,353 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:21:15,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:21:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1164111107, now seen corresponding path program 10 times [2025-02-07 20:21:15,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:21:15,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366034669] [2025-02-07 20:21:15,354 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:21:15,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:21:15,385 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 560 statements into 2 equivalence classes. [2025-02-07 20:21:15,611 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 560 of 560 statements. [2025-02-07 20:21:15,612 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:21:15,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 51064 backedges. 18921 proven. 25122 refuted. 0 times theorem prover too weak. 7021 trivial. 0 not checked. [2025-02-07 20:21:35,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:21:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366034669] [2025-02-07 20:21:35,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366034669] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:21:35,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096489983] [2025-02-07 20:21:35,111 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:21:35,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:35,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:21:35,112 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:21:35,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-07 20:21:35,236 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 560 statements into 2 equivalence classes. [2025-02-07 20:21:35,396 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 560 of 560 statements. [2025-02-07 20:21:35,396 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:21:35,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:35,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 318 conjuncts are in the unsatisfiable core [2025-02-07 20:21:35,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:21:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 51064 backedges. 18921 proven. 25122 refuted. 0 times theorem prover too weak. 7021 trivial. 0 not checked. [2025-02-07 20:21:35,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:21:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 51064 backedges. 18921 proven. 25122 refuted. 0 times theorem prover too weak. 7021 trivial. 0 not checked. [2025-02-07 20:21:59,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096489983] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:21:59,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:21:59,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160, 160] total 319 [2025-02-07 20:21:59,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399203321] [2025-02-07 20:21:59,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:21:59,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 320 states [2025-02-07 20:21:59,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:21:59,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 320 interpolants. [2025-02-07 20:21:59,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51040, Invalid=51040, Unknown=0, NotChecked=0, Total=102080 [2025-02-07 20:21:59,668 INFO L87 Difference]: Start difference. First operand 561 states and 643 transitions. Second operand has 320 states, 320 states have (on average 2.01875) internal successors, (646), 319 states have internal predecessors, (646), 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 20:22:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:22:01,516 INFO L93 Difference]: Finished difference Result 1125 states and 1449 transitions. [2025-02-07 20:22:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2025-02-07 20:22:01,517 INFO L78 Accepts]: Start accepts. Automaton has has 320 states, 320 states have (on average 2.01875) internal successors, (646), 319 states have internal predecessors, (646), 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 560 [2025-02-07 20:22:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:22:01,520 INFO L225 Difference]: With dead ends: 1125 [2025-02-07 20:22:01,521 INFO L226 Difference]: Without dead ends: 881 [2025-02-07 20:22:01,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1278 GetRequests, 960 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=51040, Invalid=51040, Unknown=0, NotChecked=0, Total=102080 [2025-02-07 20:22:01,528 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-07 20:22:01,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-07 20:22:01,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2025-02-07 20:22:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2025-02-07 20:22:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.0943181818181817) internal successors, (963), 880 states have internal predecessors, (963), 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 20:22:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 963 transitions. [2025-02-07 20:22:01,561 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 963 transitions. Word has length 560 [2025-02-07 20:22:01,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:22:01,561 INFO L471 AbstractCegarLoop]: Abstraction has 881 states and 963 transitions. [2025-02-07 20:22:01,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 320 states, 320 states have (on average 2.01875) internal successors, (646), 319 states have internal predecessors, (646), 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 20:22:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 963 transitions. [2025-02-07 20:22:01,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2025-02-07 20:22:01,571 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:22:01,571 INFO L218 NwaCegarLoop]: trace histogram [378, 318, 60, 60, 38, 22, 1, 1, 1, 1] [2025-02-07 20:22:01,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-07 20:22:01,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:22:01,776 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:22:01,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:22:01,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1142077981, now seen corresponding path program 11 times [2025-02-07 20:22:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:22:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306155609] [2025-02-07 20:22:01,779 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:22:01,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:22:01,832 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 880 statements into 379 equivalence classes. [2025-02-07 20:22:02,494 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 336 check-sat command(s) and asserted 750 of 880 statements. [2025-02-07 20:22:02,495 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 336 check-sat command(s) [2025-02-07 20:22:02,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:22:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 146424 backedges. 41810 proven. 2926 refuted. 0 times theorem prover too weak. 101688 trivial. 0 not checked. [2025-02-07 20:22:04,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:22:04,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306155609] [2025-02-07 20:22:04,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306155609] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:22:04,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743909533] [2025-02-07 20:22:04,247 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:22:04,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:22:04,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:22:04,250 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:22:04,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-07 20:22:04,438 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 880 statements into 379 equivalence classes. [2025-02-07 20:22:06,348 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 336 check-sat command(s) and asserted 750 of 880 statements. [2025-02-07 20:22:06,349 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 336 check-sat command(s) [2025-02-07 20:22:06,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:22:06,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 300 conjuncts are in the unsatisfiable core [2025-02-07 20:22:06,392 INFO L279 TraceCheckSpWp]: Computing forward predicates...