./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label50.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 40dac47caceafe03bc0ffa25ad5f74a6ba08287baf5277ee6c97f2f17e5210aa --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:48:22,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:48:23,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:48:23,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:48:23,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:48:23,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:48:23,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:48:23,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:48:23,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:48:23,042 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:48:23,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:48:23,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:48:23,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:48:23,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:48:23,044 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:48:23,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:48:23,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:48:23,045 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:48:23,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:48:23,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:48:23,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:48:23,045 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:48:23,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:48:23,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:48:23,046 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:48:23,046 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:48:23,046 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:48:23,046 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:48:23,046 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:48:23,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:48:23,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:48:23,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:48:23,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:48:23,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:48:23,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:48:23,048 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:48:23,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:48:23,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:48:23,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:48:23,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:48:23,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:48:23,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:48:23,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:48:23,048 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40dac47caceafe03bc0ffa25ad5f74a6ba08287baf5277ee6c97f2f17e5210aa [2025-02-05 10:48:23,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:48:23,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:48:23,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:48:23,382 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:48:23,383 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:48:23,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label50.c [2025-02-05 10:48:24,622 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1f88eaa76/b1e61420fe3345fab4439a3470cc0a28/FLAGcb7356b98 [2025-02-05 10:48:24,982 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:48:24,984 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label50.c [2025-02-05 10:48:25,005 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1f88eaa76/b1e61420fe3345fab4439a3470cc0a28/FLAGcb7356b98 [2025-02-05 10:48:25,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1f88eaa76/b1e61420fe3345fab4439a3470cc0a28 [2025-02-05 10:48:25,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:48:25,026 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:48:25,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:48:25,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:48:25,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:48:25,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:25,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c514f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25, skipping insertion in model container [2025-02-05 10:48:25,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:25,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:48:25,598 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/eca-rers2012/Problem03_label50.c[55003,55016] [2025-02-05 10:48:25,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:48:25,652 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:48:25,838 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/eca-rers2012/Problem03_label50.c[55003,55016] [2025-02-05 10:48:25,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:48:25,883 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:48:25,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25 WrapperNode [2025-02-05 10:48:25,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:48:25,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:48:25,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:48:25,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:48:25,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:25,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,037 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2025-02-05 10:48:26,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:48:26,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:48:26,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:48:26,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:48:26,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,066 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,113 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]. [2025-02-05 10:48:26,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,172 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:48:26,217 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:48:26,218 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:48:26,218 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:48:26,219 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (1/1) ... [2025-02-05 10:48:26,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:48:26,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:48:26,252 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) [2025-02-05 10:48:26,256 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 [2025-02-05 10:48:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:48:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:48:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:48:26,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:48:26,361 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:48:26,363 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:48:28,268 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2025-02-05 10:48:28,269 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:48:28,286 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:48:28,287 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:48:28,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:48:28 BoogieIcfgContainer [2025-02-05 10:48:28,287 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:48:28,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:48:28,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:48:28,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:48:28,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:48:25" (1/3) ... [2025-02-05 10:48:28,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e248968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:48:28, skipping insertion in model container [2025-02-05 10:48:28,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:48:25" (2/3) ... [2025-02-05 10:48:28,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e248968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:48:28, skipping insertion in model container [2025-02-05 10:48:28,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:48:28" (3/3) ... [2025-02-05 10:48:28,297 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem03_label50.c [2025-02-05 10:48:28,314 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:48:28,317 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label50.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 10:48:28,380 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:48:28,391 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;@6692afde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:48:28,391 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:48:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.7266666666666666) internal successors, (518), 301 states have internal predecessors, (518), 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) [2025-02-05 10:48:28,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-02-05 10:48:28,410 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:28,411 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:28,411 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:28,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1832924899, now seen corresponding path program 1 times [2025-02-05 10:48:28,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:28,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409948898] [2025-02-05 10:48:28,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:28,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:28,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-02-05 10:48:28,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-02-05 10:48:28,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:28,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:48:29,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409948898] [2025-02-05 10:48:29,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409948898] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:29,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:48:29,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:48:29,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292938280] [2025-02-05 10:48:29,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:29,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:29,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:29,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:48:29,448 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.7266666666666666) internal successors, (518), 301 states have internal predecessors, (518), 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 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2025-02-05 10:48:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:30,522 INFO L93 Difference]: Finished difference Result 860 states and 1504 transitions. [2025-02-05 10:48:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:30,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 154 [2025-02-05 10:48:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:30,535 INFO L225 Difference]: With dead ends: 860 [2025-02-05 10:48:30,536 INFO L226 Difference]: Without dead ends: 465 [2025-02-05 10:48:30,539 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 [2025-02-05 10:48:30,542 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 150 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:30,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 170 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 10:48:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-02-05 10:48:30,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 459. [2025-02-05 10:48:30,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.556768558951965) internal successors, (713), 458 states have internal predecessors, (713), 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) [2025-02-05 10:48:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 713 transitions. [2025-02-05 10:48:30,611 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 713 transitions. Word has length 154 [2025-02-05 10:48:30,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:30,612 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 713 transitions. [2025-02-05 10:48:30,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2025-02-05 10:48:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 713 transitions. [2025-02-05 10:48:30,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-05 10:48:30,615 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:30,615 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:30,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:48:30,616 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:30,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:30,617 INFO L85 PathProgramCache]: Analyzing trace with hash 530262713, now seen corresponding path program 1 times [2025-02-05 10:48:30,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:30,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259678359] [2025-02-05 10:48:30,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:30,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-05 10:48:30,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-05 10:48:30,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:30,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:48:30,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:30,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259678359] [2025-02-05 10:48:30,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259678359] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:30,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:48:30,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:48:30,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814296416] [2025-02-05 10:48:30,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:30,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:30,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:30,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:48:30,875 INFO L87 Difference]: Start difference. First operand 459 states and 713 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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) [2025-02-05 10:48:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:31,697 INFO L93 Difference]: Finished difference Result 1343 states and 2102 transitions. [2025-02-05 10:48:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:31,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 162 [2025-02-05 10:48:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:31,701 INFO L225 Difference]: With dead ends: 1343 [2025-02-05 10:48:31,701 INFO L226 Difference]: Without dead ends: 886 [2025-02-05 10:48:31,703 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 [2025-02-05 10:48:31,703 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:31,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 10:48:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2025-02-05 10:48:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 868. [2025-02-05 10:48:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.532871972318339) internal successors, (1329), 867 states have internal predecessors, (1329), 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) [2025-02-05 10:48:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1329 transitions. [2025-02-05 10:48:31,738 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1329 transitions. Word has length 162 [2025-02-05 10:48:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:31,739 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1329 transitions. [2025-02-05 10:48:31,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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) [2025-02-05 10:48:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1329 transitions. [2025-02-05 10:48:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-05 10:48:31,743 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:31,743 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:31,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 10:48:31,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:31,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash -140470599, now seen corresponding path program 1 times [2025-02-05 10:48:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:31,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552743231] [2025-02-05 10:48:31,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:31,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 10:48:31,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 10:48:31,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:31,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:48:31,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:31,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552743231] [2025-02-05 10:48:31,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552743231] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:31,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:48:31,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:48:31,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567192894] [2025-02-05 10:48:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:31,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:31,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:31,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:31,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:48:31,954 INFO L87 Difference]: Start difference. First operand 868 states and 1329 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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) [2025-02-05 10:48:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:32,360 INFO L93 Difference]: Finished difference Result 1710 states and 2622 transitions. [2025-02-05 10:48:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:32,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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 167 [2025-02-05 10:48:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:32,363 INFO L225 Difference]: With dead ends: 1710 [2025-02-05 10:48:32,364 INFO L226 Difference]: Without dead ends: 844 [2025-02-05 10:48:32,365 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 [2025-02-05 10:48:32,366 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:32,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:48:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2025-02-05 10:48:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2025-02-05 10:48:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 1.4768683274021353) internal successors, (1245), 843 states have internal predecessors, (1245), 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) [2025-02-05 10:48:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1245 transitions. [2025-02-05 10:48:32,388 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1245 transitions. Word has length 167 [2025-02-05 10:48:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:32,389 INFO L471 AbstractCegarLoop]: Abstraction has 844 states and 1245 transitions. [2025-02-05 10:48:32,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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) [2025-02-05 10:48:32,390 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1245 transitions. [2025-02-05 10:48:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-05 10:48:32,392 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:32,393 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:32,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 10:48:32,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:32,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:32,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1390886227, now seen corresponding path program 1 times [2025-02-05 10:48:32,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:32,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996108901] [2025-02-05 10:48:32,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:32,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:32,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 10:48:32,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 10:48:32,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:32,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:48:32,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:32,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996108901] [2025-02-05 10:48:32,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996108901] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:32,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:48:32,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:48:32,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323040658] [2025-02-05 10:48:32,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:32,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:32,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:32,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:32,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:48:32,669 INFO L87 Difference]: Start difference. First operand 844 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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) [2025-02-05 10:48:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:33,419 INFO L93 Difference]: Finished difference Result 2498 states and 3690 transitions. [2025-02-05 10:48:33,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:33,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 168 [2025-02-05 10:48:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:33,426 INFO L225 Difference]: With dead ends: 2498 [2025-02-05 10:48:33,426 INFO L226 Difference]: Without dead ends: 1656 [2025-02-05 10:48:33,428 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 [2025-02-05 10:48:33,428 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 209 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:33,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 142 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 10:48:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2025-02-05 10:48:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1656. [2025-02-05 10:48:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1655 states have (on average 1.3069486404833837) internal successors, (2163), 1655 states have internal predecessors, (2163), 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) [2025-02-05 10:48:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2163 transitions. [2025-02-05 10:48:33,467 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2163 transitions. Word has length 168 [2025-02-05 10:48:33,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:33,467 INFO L471 AbstractCegarLoop]: Abstraction has 1656 states and 2163 transitions. [2025-02-05 10:48:33,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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) [2025-02-05 10:48:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2163 transitions. [2025-02-05 10:48:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-02-05 10:48:33,471 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:33,471 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:33,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 10:48:33,472 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:33,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:33,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2050476188, now seen corresponding path program 1 times [2025-02-05 10:48:33,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:33,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33543471] [2025-02-05 10:48:33,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:33,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:33,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-02-05 10:48:33,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-02-05 10:48:33,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:33,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 10:48:33,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:33,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33543471] [2025-02-05 10:48:33,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33543471] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:33,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:48:33,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:48:33,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596179353] [2025-02-05 10:48:33,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:33,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:33,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:33,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:33,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:48:33,809 INFO L87 Difference]: Start difference. First operand 1656 states and 2163 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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) [2025-02-05 10:48:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:34,680 INFO L93 Difference]: Finished difference Result 4962 states and 6483 transitions. [2025-02-05 10:48:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:34,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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 173 [2025-02-05 10:48:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:34,693 INFO L225 Difference]: With dead ends: 4962 [2025-02-05 10:48:34,693 INFO L226 Difference]: Without dead ends: 3308 [2025-02-05 10:48:34,695 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 [2025-02-05 10:48:34,696 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 286 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:34,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 51 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 10:48:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2025-02-05 10:48:34,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3305. [2025-02-05 10:48:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3305 states, 3304 states have (on average 1.3014527845036319) internal successors, (4300), 3304 states have internal predecessors, (4300), 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) [2025-02-05 10:48:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 4300 transitions. [2025-02-05 10:48:34,757 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 4300 transitions. Word has length 173 [2025-02-05 10:48:34,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:34,757 INFO L471 AbstractCegarLoop]: Abstraction has 3305 states and 4300 transitions. [2025-02-05 10:48:34,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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) [2025-02-05 10:48:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 4300 transitions. [2025-02-05 10:48:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-02-05 10:48:34,762 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:34,762 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:34,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 10:48:34,762 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:34,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash 483356370, now seen corresponding path program 1 times [2025-02-05 10:48:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868231913] [2025-02-05 10:48:34,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:34,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:34,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-05 10:48:34,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-05 10:48:34,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:34,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:48:35,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:35,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868231913] [2025-02-05 10:48:35,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868231913] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:48:35,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428199207] [2025-02-05 10:48:35,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:35,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:48:35,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:48:35,053 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) [2025-02-05 10:48:35,057 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 [2025-02-05 10:48:35,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-05 10:48:35,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-05 10:48:35,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:35,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:35,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:48:35,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:48:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 10:48:35,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:48:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428199207] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:35,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:48:35,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-02-05 10:48:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915336627] [2025-02-05 10:48:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:35,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:35,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:35,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:48:35,268 INFO L87 Difference]: Start difference. First operand 3305 states and 4300 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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) [2025-02-05 10:48:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:35,559 INFO L93 Difference]: Finished difference Result 9903 states and 12888 transitions. [2025-02-05 10:48:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:35,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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 174 [2025-02-05 10:48:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:35,582 INFO L225 Difference]: With dead ends: 9903 [2025-02-05 10:48:35,582 INFO L226 Difference]: Without dead ends: 6600 [2025-02-05 10:48:35,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:48:35,588 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 321 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:35,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 535 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:48:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6600 states. [2025-02-05 10:48:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6600 to 6592. [2025-02-05 10:48:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6592 states, 6591 states have (on average 1.3010165377029281) internal successors, (8575), 6591 states have internal predecessors, (8575), 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) [2025-02-05 10:48:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6592 states to 6592 states and 8575 transitions. [2025-02-05 10:48:35,727 INFO L78 Accepts]: Start accepts. Automaton has 6592 states and 8575 transitions. Word has length 174 [2025-02-05 10:48:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:35,728 INFO L471 AbstractCegarLoop]: Abstraction has 6592 states and 8575 transitions. [2025-02-05 10:48:35,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 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) [2025-02-05 10:48:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6592 states and 8575 transitions. [2025-02-05 10:48:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-02-05 10:48:35,735 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:35,735 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:35,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 10:48:35,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:48:35,936 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:35,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1679914067, now seen corresponding path program 1 times [2025-02-05 10:48:35,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:35,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205435035] [2025-02-05 10:48:35,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:35,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:35,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-05 10:48:35,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-05 10:48:35,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:35,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:48:36,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:36,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205435035] [2025-02-05 10:48:36,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205435035] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:48:36,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151718844] [2025-02-05 10:48:36,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:36,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:48:36,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:48:36,185 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) [2025-02-05 10:48:36,187 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 [2025-02-05 10:48:36,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-05 10:48:36,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-05 10:48:36,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:36,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:36,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:48:36,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:48:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:48:36,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:48:36,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151718844] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:36,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:48:36,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 10:48:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416723981] [2025-02-05 10:48:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:36,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:36,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:36,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:48:36,350 INFO L87 Difference]: Start difference. First operand 6592 states and 8575 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2025-02-05 10:48:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:37,240 INFO L93 Difference]: Finished difference Result 16438 states and 21944 transitions. [2025-02-05 10:48:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:37,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 176 [2025-02-05 10:48:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:37,282 INFO L225 Difference]: With dead ends: 16438 [2025-02-05 10:48:37,282 INFO L226 Difference]: Without dead ends: 9848 [2025-02-05 10:48:37,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:48:37,294 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 210 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:37,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 367 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 10:48:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9848 states. [2025-02-05 10:48:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9848 to 9840. [2025-02-05 10:48:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9840 states, 9839 states have (on average 1.2353897753836771) internal successors, (12155), 9839 states have internal predecessors, (12155), 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) [2025-02-05 10:48:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9840 states to 9840 states and 12155 transitions. [2025-02-05 10:48:37,575 INFO L78 Accepts]: Start accepts. Automaton has 9840 states and 12155 transitions. Word has length 176 [2025-02-05 10:48:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:37,579 INFO L471 AbstractCegarLoop]: Abstraction has 9840 states and 12155 transitions. [2025-02-05 10:48:37,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2025-02-05 10:48:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9840 states and 12155 transitions. [2025-02-05 10:48:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-02-05 10:48:37,587 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:37,587 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:37,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 10:48:37,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:48:37,788 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:37,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash -92055373, now seen corresponding path program 1 times [2025-02-05 10:48:37,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:37,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085516] [2025-02-05 10:48:37,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:37,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:37,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-02-05 10:48:37,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-02-05 10:48:37,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:37,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:48:38,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:38,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085516] [2025-02-05 10:48:38,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085516] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:38,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:48:38,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:48:38,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016044897] [2025-02-05 10:48:38,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:38,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:48:38,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:38,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:48:38,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:48:38,116 INFO L87 Difference]: Start difference. First operand 9840 states and 12155 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 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) [2025-02-05 10:48:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:38,996 INFO L93 Difference]: Finished difference Result 19700 states and 24350 transitions. [2025-02-05 10:48:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:48:38,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 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 210 [2025-02-05 10:48:38,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:39,032 INFO L225 Difference]: With dead ends: 19700 [2025-02-05 10:48:39,032 INFO L226 Difference]: Without dead ends: 9862 [2025-02-05 10:48:39,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:48:39,044 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 462 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:39,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 44 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 10:48:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9862 states. [2025-02-05 10:48:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9862 to 9840. [2025-02-05 10:48:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9840 states, 9839 states have (on average 1.2256326862486024) internal successors, (12059), 9839 states have internal predecessors, (12059), 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) [2025-02-05 10:48:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9840 states to 9840 states and 12059 transitions. [2025-02-05 10:48:39,232 INFO L78 Accepts]: Start accepts. Automaton has 9840 states and 12059 transitions. Word has length 210 [2025-02-05 10:48:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:39,233 INFO L471 AbstractCegarLoop]: Abstraction has 9840 states and 12059 transitions. [2025-02-05 10:48:39,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 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) [2025-02-05 10:48:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 9840 states and 12059 transitions. [2025-02-05 10:48:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2025-02-05 10:48:39,239 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:39,240 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:39,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 10:48:39,240 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:39,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:39,243 INFO L85 PathProgramCache]: Analyzing trace with hash -948962535, now seen corresponding path program 1 times [2025-02-05 10:48:39,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:39,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928640354] [2025-02-05 10:48:39,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:39,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:39,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 224 statements into 1 equivalence classes. [2025-02-05 10:48:39,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 224 of 224 statements. [2025-02-05 10:48:39,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:39,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:48:39,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928640354] [2025-02-05 10:48:39,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928640354] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:39,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:48:39,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:48:39,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518095627] [2025-02-05 10:48:39,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:39,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:48:39,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:39,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:48:39,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:48:39,491 INFO L87 Difference]: Start difference. First operand 9840 states and 12059 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 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) [2025-02-05 10:48:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:40,631 INFO L93 Difference]: Finished difference Result 34386 states and 42315 transitions. [2025-02-05 10:48:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:48:40,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 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 224 [2025-02-05 10:48:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:40,683 INFO L225 Difference]: With dead ends: 34386 [2025-02-05 10:48:40,684 INFO L226 Difference]: Without dead ends: 24548 [2025-02-05 10:48:40,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:48:40,701 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 458 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:40,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 475 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 10:48:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24548 states. [2025-02-05 10:48:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24548 to 24534. [2025-02-05 10:48:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24534 states, 24533 states have (on average 1.211796355928749) internal successors, (29729), 24533 states have internal predecessors, (29729), 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) [2025-02-05 10:48:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24534 states to 24534 states and 29729 transitions. [2025-02-05 10:48:41,143 INFO L78 Accepts]: Start accepts. Automaton has 24534 states and 29729 transitions. Word has length 224 [2025-02-05 10:48:41,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:41,143 INFO L471 AbstractCegarLoop]: Abstraction has 24534 states and 29729 transitions. [2025-02-05 10:48:41,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 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) [2025-02-05 10:48:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 24534 states and 29729 transitions. [2025-02-05 10:48:41,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2025-02-05 10:48:41,152 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:41,152 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:41,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 10:48:41,152 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:41,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:41,153 INFO L85 PathProgramCache]: Analyzing trace with hash -648167732, now seen corresponding path program 1 times [2025-02-05 10:48:41,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:41,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284264052] [2025-02-05 10:48:41,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:41,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:41,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 233 statements into 1 equivalence classes. [2025-02-05 10:48:41,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 233 of 233 statements. [2025-02-05 10:48:41,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:41,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 10:48:42,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:42,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284264052] [2025-02-05 10:48:42,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284264052] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:48:42,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742900325] [2025-02-05 10:48:42,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:42,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:48:42,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:48:42,269 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) [2025-02-05 10:48:42,271 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 [2025-02-05 10:48:42,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 233 statements into 1 equivalence classes. [2025-02-05 10:48:42,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 233 of 233 statements. [2025-02-05 10:48:42,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:42,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:42,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 10:48:42,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:48:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-02-05 10:48:42,640 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:48:42,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742900325] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:42,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:48:42,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2025-02-05 10:48:42,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018077036] [2025-02-05 10:48:42,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:42,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:42,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:42,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:42,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 10:48:42,641 INFO L87 Difference]: Start difference. First operand 24534 states and 29729 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2025-02-05 10:48:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:43,526 INFO L93 Difference]: Finished difference Result 72654 states and 88088 transitions. [2025-02-05 10:48:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:43,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 233 [2025-02-05 10:48:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:43,635 INFO L225 Difference]: With dead ends: 72654 [2025-02-05 10:48:43,636 INFO L226 Difference]: Without dead ends: 48122 [2025-02-05 10:48:43,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 10:48:43,673 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 106 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:43,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 324 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 10:48:43,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48122 states. [2025-02-05 10:48:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48122 to 48112. [2025-02-05 10:48:44,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48112 states, 48111 states have (on average 1.1647855999667436) internal successors, (56039), 48111 states have internal predecessors, (56039), 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) [2025-02-05 10:48:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48112 states to 48112 states and 56039 transitions. [2025-02-05 10:48:44,475 INFO L78 Accepts]: Start accepts. Automaton has 48112 states and 56039 transitions. Word has length 233 [2025-02-05 10:48:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:44,477 INFO L471 AbstractCegarLoop]: Abstraction has 48112 states and 56039 transitions. [2025-02-05 10:48:44,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2025-02-05 10:48:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 48112 states and 56039 transitions. [2025-02-05 10:48:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2025-02-05 10:48:44,511 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:44,511 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:44,519 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 [2025-02-05 10:48:44,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:48:44,712 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:44,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash 229624935, now seen corresponding path program 1 times [2025-02-05 10:48:44,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:44,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658652956] [2025-02-05 10:48:44,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:44,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 346 statements into 1 equivalence classes. [2025-02-05 10:48:44,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 346 of 346 statements. [2025-02-05 10:48:44,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:44,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2025-02-05 10:48:45,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:45,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658652956] [2025-02-05 10:48:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658652956] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:45,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:48:45,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:48:45,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715994855] [2025-02-05 10:48:45,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:45,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:45,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:45,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:45,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:48:45,127 INFO L87 Difference]: Start difference. First operand 48112 states and 56039 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 states have internal predecessors, (233), 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) [2025-02-05 10:48:46,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:46,037 INFO L93 Difference]: Finished difference Result 120694 states and 140046 transitions. [2025-02-05 10:48:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:46,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 states have internal predecessors, (233), 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 346 [2025-02-05 10:48:46,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:46,268 INFO L225 Difference]: With dead ends: 120694 [2025-02-05 10:48:46,269 INFO L226 Difference]: Without dead ends: 72584 [2025-02-05 10:48:46,296 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 [2025-02-05 10:48:46,296 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 155 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:46,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 134 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 10:48:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72584 states. [2025-02-05 10:48:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72584 to 72572. [2025-02-05 10:48:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72572 states, 72571 states have (on average 1.1567017128053907) internal successors, (83943), 72571 states have internal predecessors, (83943), 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) [2025-02-05 10:48:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72572 states to 72572 states and 83943 transitions. [2025-02-05 10:48:47,258 INFO L78 Accepts]: Start accepts. Automaton has 72572 states and 83943 transitions. Word has length 346 [2025-02-05 10:48:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:47,259 INFO L471 AbstractCegarLoop]: Abstraction has 72572 states and 83943 transitions. [2025-02-05 10:48:47,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 states have internal predecessors, (233), 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) [2025-02-05 10:48:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 72572 states and 83943 transitions. [2025-02-05 10:48:47,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-02-05 10:48:47,299 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:47,299 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:47,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-05 10:48:47,299 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:47,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:47,300 INFO L85 PathProgramCache]: Analyzing trace with hash -750428692, now seen corresponding path program 1 times [2025-02-05 10:48:47,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:47,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120005581] [2025-02-05 10:48:47,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:47,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:47,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-02-05 10:48:47,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-02-05 10:48:47,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:47,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 169 proven. 6 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2025-02-05 10:48:48,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:48,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120005581] [2025-02-05 10:48:48,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120005581] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:48:48,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102003280] [2025-02-05 10:48:48,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:48,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:48:48,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:48:48,936 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) [2025-02-05 10:48:48,937 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 [2025-02-05 10:48:49,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-02-05 10:48:49,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-02-05 10:48:49,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:49,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:49,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:48:49,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:48:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-02-05 10:48:49,222 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:48:49,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102003280] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:49,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:48:49,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-02-05 10:48:49,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014959680] [2025-02-05 10:48:49,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:49,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:49,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:49,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:49,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 10:48:49,224 INFO L87 Difference]: Start difference. First operand 72572 states and 83943 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 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) [2025-02-05 10:48:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:50,192 INFO L93 Difference]: Finished difference Result 195186 states and 226599 transitions. [2025-02-05 10:48:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:50,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 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 353 [2025-02-05 10:48:50,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:50,356 INFO L225 Difference]: With dead ends: 195186 [2025-02-05 10:48:50,356 INFO L226 Difference]: Without dead ends: 122616 [2025-02-05 10:48:50,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 10:48:50,417 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 154 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:50,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 170 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 10:48:50,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122616 states. [2025-02-05 10:48:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122616 to 109128. [2025-02-05 10:48:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109128 states, 109127 states have (on average 1.1693989571783334) internal successors, (127613), 109127 states have internal predecessors, (127613), 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) [2025-02-05 10:48:52,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109128 states to 109128 states and 127613 transitions. [2025-02-05 10:48:52,418 INFO L78 Accepts]: Start accepts. Automaton has 109128 states and 127613 transitions. Word has length 353 [2025-02-05 10:48:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:52,418 INFO L471 AbstractCegarLoop]: Abstraction has 109128 states and 127613 transitions. [2025-02-05 10:48:52,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 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) [2025-02-05 10:48:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 109128 states and 127613 transitions. [2025-02-05 10:48:52,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-02-05 10:48:52,456 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:52,456 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:52,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 10:48:52,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 10:48:52,657 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:52,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2029776318, now seen corresponding path program 1 times [2025-02-05 10:48:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:52,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516453244] [2025-02-05 10:48:52,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:52,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:52,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-02-05 10:48:52,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-02-05 10:48:52,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:52,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 205 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 10:48:53,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:53,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516453244] [2025-02-05 10:48:53,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516453244] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:48:53,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578166428] [2025-02-05 10:48:53,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:53,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:48:53,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:48:53,244 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) [2025-02-05 10:48:53,275 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 [2025-02-05 10:48:53,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-02-05 10:48:53,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-02-05 10:48:53,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:53,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:53,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 10:48:53,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:48:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-02-05 10:48:53,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:48:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578166428] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:53,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:48:53,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-02-05 10:48:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256519308] [2025-02-05 10:48:53,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:53,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:53,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:53,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:53,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:48:53,475 INFO L87 Difference]: Start difference. First operand 109128 states and 127613 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2025-02-05 10:48:54,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:54,574 INFO L93 Difference]: Finished difference Result 280995 states and 327820 transitions. [2025-02-05 10:48:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:54,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 354 [2025-02-05 10:48:54,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:55,056 INFO L225 Difference]: With dead ends: 280995 [2025-02-05 10:48:55,056 INFO L226 Difference]: Without dead ends: 171869 [2025-02-05 10:48:55,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:48:55,116 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 242 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:55,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 314 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:48:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171869 states. [2025-02-05 10:48:56,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171869 to 119473. [2025-02-05 10:48:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119473 states, 119472 states have (on average 1.1488214811838757) internal successors, (137252), 119472 states have internal predecessors, (137252), 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) [2025-02-05 10:48:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119473 states to 119473 states and 137252 transitions. [2025-02-05 10:48:57,098 INFO L78 Accepts]: Start accepts. Automaton has 119473 states and 137252 transitions. Word has length 354 [2025-02-05 10:48:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:48:57,099 INFO L471 AbstractCegarLoop]: Abstraction has 119473 states and 137252 transitions. [2025-02-05 10:48:57,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2025-02-05 10:48:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 119473 states and 137252 transitions. [2025-02-05 10:48:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2025-02-05 10:48:57,130 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:48:57,130 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:48:57,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 10:48:57,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-05 10:48:57,331 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:48:57,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:48:57,331 INFO L85 PathProgramCache]: Analyzing trace with hash 643554640, now seen corresponding path program 1 times [2025-02-05 10:48:57,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:48:57,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170926514] [2025-02-05 10:48:57,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:57,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:48:57,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-02-05 10:48:57,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-02-05 10:48:57,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:57,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 272 proven. 62 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-05 10:48:58,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:48:58,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170926514] [2025-02-05 10:48:58,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170926514] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:48:58,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931189764] [2025-02-05 10:48:58,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:48:58,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:48:58,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:48:58,209 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) [2025-02-05 10:48:58,213 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 [2025-02-05 10:48:58,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-02-05 10:48:58,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-02-05 10:48:58,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:48:58,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:48:58,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:48:58,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:48:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-02-05 10:48:58,551 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:48:58,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931189764] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:48:58,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:48:58,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-02-05 10:48:58,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005282351] [2025-02-05 10:48:58,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:48:58,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:48:58,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:48:58,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:48:58,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:48:58,553 INFO L87 Difference]: Start difference. First operand 119473 states and 137252 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2025-02-05 10:48:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:48:59,578 INFO L93 Difference]: Finished difference Result 238958 states and 274528 transitions. [2025-02-05 10:48:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:48:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 388 [2025-02-05 10:48:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:48:59,935 INFO L225 Difference]: With dead ends: 238958 [2025-02-05 10:48:59,936 INFO L226 Difference]: Without dead ends: 119487 [2025-02-05 10:48:59,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:48:59,982 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 88 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:48:59,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 124 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:49:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119487 states. [2025-02-05 10:49:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119487 to 118661. [2025-02-05 10:49:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118661 states, 118660 states have (on average 1.1237569526377886) internal successors, (133345), 118660 states have internal predecessors, (133345), 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) [2025-02-05 10:49:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118661 states to 118661 states and 133345 transitions. [2025-02-05 10:49:01,430 INFO L78 Accepts]: Start accepts. Automaton has 118661 states and 133345 transitions. Word has length 388 [2025-02-05 10:49:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:49:01,431 INFO L471 AbstractCegarLoop]: Abstraction has 118661 states and 133345 transitions. [2025-02-05 10:49:01,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2025-02-05 10:49:01,431 INFO L276 IsEmpty]: Start isEmpty. Operand 118661 states and 133345 transitions. [2025-02-05 10:49:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2025-02-05 10:49:01,478 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:49:01,479 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:49:01,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 10:49:01,679 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,SelfDestructingSolverStorable13 [2025-02-05 10:49:01,679 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:49:01,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:49:01,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1619005804, now seen corresponding path program 1 times [2025-02-05 10:49:01,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:49:01,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969270865] [2025-02-05 10:49:01,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:49:01,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:49:01,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 395 statements into 1 equivalence classes. [2025-02-05 10:49:01,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 395 of 395 statements. [2025-02-05 10:49:01,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:49:01,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:49:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2025-02-05 10:49:01,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:49:01,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969270865] [2025-02-05 10:49:01,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969270865] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:49:01,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:49:01,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:49:01,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663382139] [2025-02-05 10:49:01,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:49:01,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:49:01,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:49:01,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:49:01,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:49:01,959 INFO L87 Difference]: Start difference. First operand 118661 states and 133345 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 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) [2025-02-05 10:49:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:49:03,087 INFO L93 Difference]: Finished difference Result 318533 states and 357341 transitions. [2025-02-05 10:49:03,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:49:03,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 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 395 [2025-02-05 10:49:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:49:03,366 INFO L225 Difference]: With dead ends: 318533 [2025-02-05 10:49:03,366 INFO L226 Difference]: Without dead ends: 199874 [2025-02-05 10:49:03,457 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 [2025-02-05 10:49:03,458 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 204 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:49:03,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 452 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:49:03,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199874 states. [2025-02-05 10:49:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199874 to 199872. [2025-02-05 10:49:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199872 states, 199871 states have (on average 1.1201675080426876) internal successors, (223889), 199871 states have internal predecessors, (223889), 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) [2025-02-05 10:49:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199872 states to 199872 states and 223889 transitions. [2025-02-05 10:49:06,742 INFO L78 Accepts]: Start accepts. Automaton has 199872 states and 223889 transitions. Word has length 395 [2025-02-05 10:49:06,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:49:06,742 INFO L471 AbstractCegarLoop]: Abstraction has 199872 states and 223889 transitions. [2025-02-05 10:49:06,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 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) [2025-02-05 10:49:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 199872 states and 223889 transitions. [2025-02-05 10:49:06,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2025-02-05 10:49:06,773 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:49:06,773 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:49:06,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-05 10:49:06,773 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:49:06,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:49:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash -995060724, now seen corresponding path program 1 times [2025-02-05 10:49:06,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:49:06,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996301735] [2025-02-05 10:49:06,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:49:06,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:49:06,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 418 statements into 1 equivalence classes. [2025-02-05 10:49:06,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 418 of 418 statements. [2025-02-05 10:49:06,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:49:06,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:49:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 331 proven. 62 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2025-02-05 10:49:07,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:49:07,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996301735] [2025-02-05 10:49:07,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996301735] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:49:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465350435] [2025-02-05 10:49:07,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:49:07,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:49:07,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:49:07,473 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) [2025-02-05 10:49:07,474 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 [2025-02-05 10:49:07,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 418 statements into 1 equivalence classes. [2025-02-05 10:49:07,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 418 of 418 statements. [2025-02-05 10:49:07,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:49:07,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:49:07,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:49:07,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:49:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-02-05 10:49:07,751 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:49:07,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465350435] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:49:07,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:49:07,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-02-05 10:49:07,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356365004] [2025-02-05 10:49:07,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:49:07,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:49:07,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:49:07,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:49:07,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:49:07,753 INFO L87 Difference]: Start difference. First operand 199872 states and 223889 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2025-02-05 10:49:09,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:49:09,193 INFO L93 Difference]: Finished difference Result 398134 states and 445936 transitions. [2025-02-05 10:49:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:49:09,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 418 [2025-02-05 10:49:09,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:49:09,447 INFO L225 Difference]: With dead ends: 398134 [2025-02-05 10:49:09,447 INFO L226 Difference]: Without dead ends: 198264 [2025-02-05 10:49:09,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:49:09,514 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 216 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:49:09,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 105 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:49:09,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198264 states. [2025-02-05 10:49:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198264 to 195812. [2025-02-05 10:49:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195812 states, 195811 states have (on average 1.1050298502127052) internal successors, (216377), 195811 states have internal predecessors, (216377), 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) [2025-02-05 10:49:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195812 states to 195812 states and 216377 transitions. [2025-02-05 10:49:12,083 INFO L78 Accepts]: Start accepts. Automaton has 195812 states and 216377 transitions. Word has length 418 [2025-02-05 10:49:12,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:49:12,084 INFO L471 AbstractCegarLoop]: Abstraction has 195812 states and 216377 transitions. [2025-02-05 10:49:12,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2025-02-05 10:49:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 195812 states and 216377 transitions. [2025-02-05 10:49:12,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2025-02-05 10:49:12,125 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:49:12,125 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:49:12,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 10:49:12,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:49:12,327 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:49:12,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:49:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2055107385, now seen corresponding path program 1 times [2025-02-05 10:49:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:49:12,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524064166] [2025-02-05 10:49:12,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:49:12,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:49:12,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 421 statements into 1 equivalence classes. [2025-02-05 10:49:12,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 421 of 421 statements. [2025-02-05 10:49:12,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:49:12,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:49:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:49:13,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:49:13,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524064166] [2025-02-05 10:49:13,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524064166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:49:13,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:49:13,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 10:49:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054179800] [2025-02-05 10:49:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:49:13,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:49:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:49:13,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:49:13,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:49:13,031 INFO L87 Difference]: Start difference. First operand 195812 states and 216377 transitions. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2025-02-05 10:49:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:49:14,957 INFO L93 Difference]: Finished difference Result 439688 states and 485588 transitions. [2025-02-05 10:49:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:49:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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 421 [2025-02-05 10:49:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:49:15,274 INFO L225 Difference]: With dead ends: 439688 [2025-02-05 10:49:15,275 INFO L226 Difference]: Without dead ends: 243878 [2025-02-05 10:49:15,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:49:15,390 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 322 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 10:49:15,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 101 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 10:49:15,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243878 states. [2025-02-05 10:49:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243878 to 165054. [2025-02-05 10:49:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165054 states, 165053 states have (on average 1.1005313444772284) internal successors, (181646), 165053 states have internal predecessors, (181646), 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) [2025-02-05 10:49:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165054 states to 165054 states and 181646 transitions. [2025-02-05 10:49:18,647 INFO L78 Accepts]: Start accepts. Automaton has 165054 states and 181646 transitions. Word has length 421 [2025-02-05 10:49:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:49:18,647 INFO L471 AbstractCegarLoop]: Abstraction has 165054 states and 181646 transitions. [2025-02-05 10:49:18,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2025-02-05 10:49:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 165054 states and 181646 transitions. [2025-02-05 10:49:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2025-02-05 10:49:18,663 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:49:18,663 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:49:18,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-05 10:49:18,663 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:49:18,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:49:18,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1507826457, now seen corresponding path program 1 times [2025-02-05 10:49:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:49:18,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220571396] [2025-02-05 10:49:18,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:49:18,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:49:18,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 451 statements into 1 equivalence classes. [2025-02-05 10:49:18,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 451 of 451 statements. [2025-02-05 10:49:18,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:49:18,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:49:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2025-02-05 10:49:18,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:49:18,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220571396] [2025-02-05 10:49:18,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220571396] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:49:18,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:49:18,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:49:18,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213521901] [2025-02-05 10:49:18,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:49:18,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:49:18,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:49:18,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:49:18,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:49:18,901 INFO L87 Difference]: Start difference. First operand 165054 states and 181646 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2025-02-05 10:49:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:49:20,227 INFO L93 Difference]: Finished difference Result 318823 states and 350724 transitions. [2025-02-05 10:49:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:49:20,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 451 [2025-02-05 10:49:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:49:20,433 INFO L225 Difference]: With dead ends: 318823 [2025-02-05 10:49:20,433 INFO L226 Difference]: Without dead ends: 153771 [2025-02-05 10:49:20,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:49:20,541 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 80 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:49:20,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 360 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 10:49:20,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153771 states. [2025-02-05 10:49:22,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153771 to 151644. [2025-02-05 10:49:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151644 states, 151643 states have (on average 1.0955995331139585) internal successors, (166140), 151643 states have internal predecessors, (166140), 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) [2025-02-05 10:49:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151644 states to 151644 states and 166140 transitions. [2025-02-05 10:49:23,006 INFO L78 Accepts]: Start accepts. Automaton has 151644 states and 166140 transitions. Word has length 451 [2025-02-05 10:49:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:49:23,007 INFO L471 AbstractCegarLoop]: Abstraction has 151644 states and 166140 transitions. [2025-02-05 10:49:23,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2025-02-05 10:49:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 151644 states and 166140 transitions. [2025-02-05 10:49:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2025-02-05 10:49:23,027 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:49:23,028 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:49:23,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-05 10:49:23,028 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:49:23,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:49:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1696293199, now seen corresponding path program 1 times [2025-02-05 10:49:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:49:23,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471248709] [2025-02-05 10:49:23,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:49:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:49:23,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 472 statements into 1 equivalence classes. [2025-02-05 10:49:23,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 472 of 472 statements. [2025-02-05 10:49:23,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:49:23,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:49:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 498 proven. 18 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-02-05 10:49:23,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:49:23,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471248709] [2025-02-05 10:49:23,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471248709] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:49:23,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68878153] [2025-02-05 10:49:23,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:49:23,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:49:23,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:49:23,794 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) [2025-02-05 10:49:23,796 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