./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem02_label29.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/Problem02_label29.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 b63b3bf7ef08814c7616207e01fc54fc4cf0e6569356ae10e2de73225afc9bce --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:44:15,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:44:15,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:44:15,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:44:15,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:44:15,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:44:15,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:44:15,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:44:15,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:44:15,137 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:44:15,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:44:15,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:44:15,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:44:15,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:44:15,137 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:44:15,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:44:15,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:44:15,137 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:44:15,138 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:44:15,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:44:15,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:44:15,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:44:15,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:44:15,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:44:15,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:44:15,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:44:15,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:44:15,139 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 -> b63b3bf7ef08814c7616207e01fc54fc4cf0e6569356ae10e2de73225afc9bce [2025-02-05 10:44:15,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:44:15,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:44:15,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:44:15,364 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:44:15,365 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:44:15,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem02_label29.c [2025-02-05 10:44:16,445 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7fc1eb3d7/a9f023e06148418b9830876d0310db4e/FLAG755ed4f93 [2025-02-05 10:44:16,775 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:44:16,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label29.c [2025-02-05 10:44:16,786 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7fc1eb3d7/a9f023e06148418b9830876d0310db4e/FLAG755ed4f93 [2025-02-05 10:44:17,019 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7fc1eb3d7/a9f023e06148418b9830876d0310db4e [2025-02-05 10:44:17,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:44:17,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:44:17,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:44:17,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:44:17,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:44:17,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f1a273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17, skipping insertion in model container [2025-02-05 10:44:17,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:44:17,285 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/Problem02_label29.c[17015,17028] [2025-02-05 10:44:17,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:44:17,330 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:44:17,385 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/Problem02_label29.c[17015,17028] [2025-02-05 10:44:17,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:44:17,403 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:44:17,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17 WrapperNode [2025-02-05 10:44:17,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:44:17,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:44:17,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:44:17,405 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:44:17,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,449 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 666 [2025-02-05 10:44:17,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:44:17,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:44:17,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:44:17,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:44:17,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,492 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 10:44:17,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,503 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:44:17,518 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:44:17,518 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:44:17,518 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:44:17,519 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (1/1) ... [2025-02-05 10:44:17,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:44:17,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:44:17,555 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 10:44:17,557 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 10:44:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:44:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:44:17,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:44:17,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:44:17,624 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:44:17,625 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:44:18,370 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2025-02-05 10:44:18,371 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:44:18,380 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:44:18,380 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:44:18,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:44:18 BoogieIcfgContainer [2025-02-05 10:44:18,380 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:44:18,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:44:18,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:44:18,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:44:18,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:44:17" (1/3) ... [2025-02-05 10:44:18,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d8fc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:44:18, skipping insertion in model container [2025-02-05 10:44:18,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:44:17" (2/3) ... [2025-02-05 10:44:18,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d8fc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:44:18, skipping insertion in model container [2025-02-05 10:44:18,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:44:18" (3/3) ... [2025-02-05 10:44:18,387 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2025-02-05 10:44:18,397 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:44:18,398 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem02_label29.c that has 1 procedures, 227 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 10:44:18,433 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:44:18,441 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;@18dee9a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:44:18,441 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:44:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 225 states have (on average 1.6622222222222223) internal successors, (374), 226 states have internal predecessors, (374), 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 10:44:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-02-05 10:44:18,449 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:18,449 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] [2025-02-05 10:44:18,450 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:18,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash -163849109, now seen corresponding path program 1 times [2025-02-05 10:44:18,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:18,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123925926] [2025-02-05 10:44:18,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:18,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:18,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 102 statements into 1 equivalence classes. [2025-02-05 10:44:18,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 102 of 102 statements. [2025-02-05 10:44:18,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:18,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:18,797 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 10:44:18,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:18,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123925926] [2025-02-05 10:44:18,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123925926] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:18,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:18,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:44:18,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491538567] [2025-02-05 10:44:18,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:18,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:18,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:18,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:18,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:18,822 INFO L87 Difference]: Start difference. First operand has 227 states, 225 states have (on average 1.6622222222222223) internal successors, (374), 226 states have internal predecessors, (374), 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 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 10:44:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:19,367 INFO L93 Difference]: Finished difference Result 601 states and 1032 transitions. [2025-02-05 10:44:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:19,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 102 [2025-02-05 10:44:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:19,374 INFO L225 Difference]: With dead ends: 601 [2025-02-05 10:44:19,374 INFO L226 Difference]: Without dead ends: 310 [2025-02-05 10:44:19,377 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 10:44:19,378 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 132 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:19,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 117 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:44:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2025-02-05 10:44:19,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2025-02-05 10:44:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.4368932038834952) internal successors, (444), 309 states have internal predecessors, (444), 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 10:44:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 444 transitions. [2025-02-05 10:44:19,410 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 444 transitions. Word has length 102 [2025-02-05 10:44:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:19,411 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 444 transitions. [2025-02-05 10:44:19,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 10:44:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 444 transitions. [2025-02-05 10:44:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-02-05 10:44:19,413 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:19,414 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-02-05 10:44:19,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:44:19,414 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:19,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:19,414 INFO L85 PathProgramCache]: Analyzing trace with hash 292002918, now seen corresponding path program 1 times [2025-02-05 10:44:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:19,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185969306] [2025-02-05 10:44:19,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:19,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:19,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-02-05 10:44:19,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-02-05 10:44:19,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:19,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:44:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:19,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185969306] [2025-02-05 10:44:19,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185969306] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:19,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:19,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:44:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105010046] [2025-02-05 10:44:19,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:19,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:19,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:19,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:19,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:19,567 INFO L87 Difference]: Start difference. First operand 310 states and 444 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:44:19,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:19,928 INFO L93 Difference]: Finished difference Result 911 states and 1313 transitions. [2025-02-05 10:44:19,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:19,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2025-02-05 10:44:19,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:19,931 INFO L225 Difference]: With dead ends: 911 [2025-02-05 10:44:19,931 INFO L226 Difference]: Without dead ends: 603 [2025-02-05 10:44:19,932 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 10:44:19,932 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:19,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 98 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:44:19,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2025-02-05 10:44:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 598. [2025-02-05 10:44:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.3953098827470687) internal successors, (833), 597 states have internal predecessors, (833), 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 10:44:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 833 transitions. [2025-02-05 10:44:19,951 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 833 transitions. Word has length 120 [2025-02-05 10:44:19,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:19,951 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 833 transitions. [2025-02-05 10:44:19,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:44:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 833 transitions. [2025-02-05 10:44:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 10:44:19,954 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:19,954 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-02-05 10:44:19,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 10:44:19,954 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:19,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2024198458, now seen corresponding path program 1 times [2025-02-05 10:44:19,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:19,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775417471] [2025-02-05 10:44:19,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:19,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:19,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 10:44:19,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 10:44:19,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:19,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:44:20,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:20,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775417471] [2025-02-05 10:44:20,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775417471] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:20,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:20,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:44:20,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49829781] [2025-02-05 10:44:20,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:20,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:20,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:20,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:20,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:20,054 INFO L87 Difference]: Start difference. First operand 598 states and 833 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 10:44:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:20,426 INFO L93 Difference]: Finished difference Result 1754 states and 2450 transitions. [2025-02-05 10:44:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:20,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 130 [2025-02-05 10:44:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:20,430 INFO L225 Difference]: With dead ends: 1754 [2025-02-05 10:44:20,430 INFO L226 Difference]: Without dead ends: 1158 [2025-02-05 10:44:20,431 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 10:44:20,431 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 125 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:20,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 272 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:44:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2025-02-05 10:44:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 878. [2025-02-05 10:44:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.3021664766248575) internal successors, (1142), 877 states have internal predecessors, (1142), 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 10:44:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1142 transitions. [2025-02-05 10:44:20,457 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1142 transitions. Word has length 130 [2025-02-05 10:44:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:20,457 INFO L471 AbstractCegarLoop]: Abstraction has 878 states and 1142 transitions. [2025-02-05 10:44:20,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 10:44:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1142 transitions. [2025-02-05 10:44:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-05 10:44:20,461 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:20,461 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-02-05 10:44:20,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 10:44:20,461 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:20,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:20,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1433962625, now seen corresponding path program 1 times [2025-02-05 10:44:20,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:20,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268506301] [2025-02-05 10:44:20,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:20,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:20,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 10:44:20,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 10:44:20,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:20,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 10:44:20,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:20,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268506301] [2025-02-05 10:44:20,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268506301] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:20,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:44:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193170573] [2025-02-05 10:44:20,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:20,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:20,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:20,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:20,581 INFO L87 Difference]: Start difference. First operand 878 states and 1142 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 10:44:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:20,928 INFO L93 Difference]: Finished difference Result 1751 states and 2279 transitions. [2025-02-05 10:44:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 138 [2025-02-05 10:44:20,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:20,932 INFO L225 Difference]: With dead ends: 1751 [2025-02-05 10:44:20,932 INFO L226 Difference]: Without dead ends: 875 [2025-02-05 10:44:20,933 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 10:44:20,935 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 186 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:20,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 56 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:44:20,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2025-02-05 10:44:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 875. [2025-02-05 10:44:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.231121281464531) internal successors, (1076), 874 states have internal predecessors, (1076), 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 10:44:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1076 transitions. [2025-02-05 10:44:20,956 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1076 transitions. Word has length 138 [2025-02-05 10:44:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:20,956 INFO L471 AbstractCegarLoop]: Abstraction has 875 states and 1076 transitions. [2025-02-05 10:44:20,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 10:44:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1076 transitions. [2025-02-05 10:44:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-02-05 10:44:20,959 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:20,959 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-02-05 10:44:20,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 10:44:20,960 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:20,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash -300236636, now seen corresponding path program 1 times [2025-02-05 10:44:20,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:20,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364401138] [2025-02-05 10:44:20,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:20,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:20,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-02-05 10:44:20,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-02-05 10:44:20,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:20,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 10:44:21,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:21,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364401138] [2025-02-05 10:44:21,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364401138] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:21,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:21,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:44:21,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260805412] [2025-02-05 10:44:21,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:21,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:21,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:21,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:21,052 INFO L87 Difference]: Start difference. First operand 875 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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 10:44:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:21,220 INFO L93 Difference]: Finished difference Result 1735 states and 2135 transitions. [2025-02-05 10:44:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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 142 [2025-02-05 10:44:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:21,222 INFO L225 Difference]: With dead ends: 1735 [2025-02-05 10:44:21,222 INFO L226 Difference]: Without dead ends: 580 [2025-02-05 10:44:21,223 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 10:44:21,224 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:21,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 21 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:44:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2025-02-05 10:44:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 579. [2025-02-05 10:44:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.217993079584775) internal successors, (704), 578 states have internal predecessors, (704), 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 10:44:21,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 704 transitions. [2025-02-05 10:44:21,232 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 704 transitions. Word has length 142 [2025-02-05 10:44:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:21,232 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 704 transitions. [2025-02-05 10:44:21,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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 10:44:21,233 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 704 transitions. [2025-02-05 10:44:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-02-05 10:44:21,234 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:21,234 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:21,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 10:44:21,234 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:21,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2094319094, now seen corresponding path program 1 times [2025-02-05 10:44:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:21,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738712986] [2025-02-05 10:44:21,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:21,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:21,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-02-05 10:44:21,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-02-05 10:44:21,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:21,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:44:21,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:21,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738712986] [2025-02-05 10:44:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738712986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:21,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:21,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:44:21,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487265888] [2025-02-05 10:44:21,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:21,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:21,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:21,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:21,313 INFO L87 Difference]: Start difference. First operand 579 states and 704 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 10:44:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:21,579 INFO L93 Difference]: Finished difference Result 1436 states and 1734 transitions. [2025-02-05 10:44:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 143 [2025-02-05 10:44:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:21,582 INFO L225 Difference]: With dead ends: 1436 [2025-02-05 10:44:21,582 INFO L226 Difference]: Without dead ends: 859 [2025-02-05 10:44:21,583 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 10:44:21,583 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 112 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:21,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 215 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:44:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2025-02-05 10:44:21,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2025-02-05 10:44:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 858 states have (on average 1.155011655011655) internal successors, (991), 858 states have internal predecessors, (991), 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 10:44:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 991 transitions. [2025-02-05 10:44:21,594 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 991 transitions. Word has length 143 [2025-02-05 10:44:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:21,595 INFO L471 AbstractCegarLoop]: Abstraction has 859 states and 991 transitions. [2025-02-05 10:44:21,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 10:44:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 991 transitions. [2025-02-05 10:44:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-05 10:44:21,596 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:21,596 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:21,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 10:44:21,597 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:21,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2045528096, now seen corresponding path program 1 times [2025-02-05 10:44:21,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:21,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617641118] [2025-02-05 10:44:21,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:21,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:21,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 10:44:21,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 10:44:21,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:21,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:44:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617641118] [2025-02-05 10:44:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617641118] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:21,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:44:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531956910] [2025-02-05 10:44:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:21,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:21,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:21,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:21,719 INFO L87 Difference]: Start difference. First operand 859 states and 991 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 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 10:44:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:22,019 INFO L93 Difference]: Finished difference Result 2278 states and 2666 transitions. [2025-02-05 10:44:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 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 164 [2025-02-05 10:44:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:22,024 INFO L225 Difference]: With dead ends: 2278 [2025-02-05 10:44:22,024 INFO L226 Difference]: Without dead ends: 1421 [2025-02-05 10:44:22,025 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 10:44:22,025 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 121 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:22,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 208 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:44:22,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2025-02-05 10:44:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1420. [2025-02-05 10:44:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 1.1564482029598309) internal successors, (1641), 1419 states have internal predecessors, (1641), 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 10:44:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1641 transitions. [2025-02-05 10:44:22,043 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1641 transitions. Word has length 164 [2025-02-05 10:44:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:22,043 INFO L471 AbstractCegarLoop]: Abstraction has 1420 states and 1641 transitions. [2025-02-05 10:44:22,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 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 10:44:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1641 transitions. [2025-02-05 10:44:22,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-02-05 10:44:22,045 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:22,045 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:22,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 10:44:22,045 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:22,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:22,046 INFO L85 PathProgramCache]: Analyzing trace with hash 15439932, now seen corresponding path program 1 times [2025-02-05 10:44:22,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:22,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218793218] [2025-02-05 10:44:22,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:22,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-02-05 10:44:22,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-02-05 10:44:22,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:22,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 10:44:22,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:22,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218793218] [2025-02-05 10:44:22,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218793218] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:22,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:22,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:44:22,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317648300] [2025-02-05 10:44:22,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:22,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:22,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:22,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:22,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:22,185 INFO L87 Difference]: Start difference. First operand 1420 states and 1641 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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 10:44:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:22,545 INFO L93 Difference]: Finished difference Result 2979 states and 3461 transitions. [2025-02-05 10:44:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:22,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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 192 [2025-02-05 10:44:22,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:22,550 INFO L225 Difference]: With dead ends: 2979 [2025-02-05 10:44:22,551 INFO L226 Difference]: Without dead ends: 1701 [2025-02-05 10:44:22,552 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 10:44:22,552 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 74 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:22,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 70 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:44:22,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2025-02-05 10:44:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1701. [2025-02-05 10:44:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 1.1070588235294119) internal successors, (1882), 1700 states have internal predecessors, (1882), 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 10:44:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 1882 transitions. [2025-02-05 10:44:22,575 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 1882 transitions. Word has length 192 [2025-02-05 10:44:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:22,575 INFO L471 AbstractCegarLoop]: Abstraction has 1701 states and 1882 transitions. [2025-02-05 10:44:22,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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 10:44:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 1882 transitions. [2025-02-05 10:44:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2025-02-05 10:44:22,579 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:22,579 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:44:22,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 10:44:22,579 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:22,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1950639912, now seen corresponding path program 1 times [2025-02-05 10:44:22,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:22,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43207158] [2025-02-05 10:44:22,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:22,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:22,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 205 statements into 1 equivalence classes. [2025-02-05 10:44:22,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 205 of 205 statements. [2025-02-05 10:44:22,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:22,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:44:22,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43207158] [2025-02-05 10:44:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43207158] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:22,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:22,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:44:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221211889] [2025-02-05 10:44:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:22,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:22,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:22,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:22,688 INFO L87 Difference]: Start difference. First operand 1701 states and 1882 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) 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 10:44:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:22,989 INFO L93 Difference]: Finished difference Result 3262 states and 3619 transitions. [2025-02-05 10:44:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:22,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) 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 205 [2025-02-05 10:44:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:22,994 INFO L225 Difference]: With dead ends: 3262 [2025-02-05 10:44:22,994 INFO L226 Difference]: Without dead ends: 1420 [2025-02-05 10:44:22,995 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 10:44:22,998 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 91 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:22,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 223 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:44:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2025-02-05 10:44:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1417. [2025-02-05 10:44:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 1.0889830508474576) internal successors, (1542), 1416 states have internal predecessors, (1542), 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 10:44:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1542 transitions. [2025-02-05 10:44:23,019 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1542 transitions. Word has length 205 [2025-02-05 10:44:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:23,020 INFO L471 AbstractCegarLoop]: Abstraction has 1417 states and 1542 transitions. [2025-02-05 10:44:23,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) 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 10:44:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1542 transitions. [2025-02-05 10:44:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-02-05 10:44:23,022 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:23,023 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2025-02-05 10:44:23,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 10:44:23,023 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:23,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1885889721, now seen corresponding path program 1 times [2025-02-05 10:44:23,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:23,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554673643] [2025-02-05 10:44:23,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:23,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-02-05 10:44:23,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-02-05 10:44:23,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:23,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-02-05 10:44:23,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:23,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554673643] [2025-02-05 10:44:23,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554673643] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:23,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:44:23,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:44:23,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462071347] [2025-02-05 10:44:23,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:23,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:23,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:23,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:23,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:44:23,168 INFO L87 Difference]: Start difference. First operand 1417 states and 1542 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 10:44:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:23,656 INFO L93 Difference]: Finished difference Result 2972 states and 3241 transitions. [2025-02-05 10:44:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 214 [2025-02-05 10:44:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:23,660 INFO L225 Difference]: With dead ends: 2972 [2025-02-05 10:44:23,660 INFO L226 Difference]: Without dead ends: 1134 [2025-02-05 10:44:23,661 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 10:44:23,662 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 81 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:23,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 195 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:44:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2025-02-05 10:44:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2025-02-05 10:44:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 1.0388349514563107) internal successors, (1177), 1133 states have internal predecessors, (1177), 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 10:44:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1177 transitions. [2025-02-05 10:44:23,677 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1177 transitions. Word has length 214 [2025-02-05 10:44:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:23,677 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1177 transitions. [2025-02-05 10:44:23,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 10:44:23,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1177 transitions. [2025-02-05 10:44:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2025-02-05 10:44:23,679 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:44:23,680 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2025-02-05 10:44:23,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-05 10:44:23,680 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:44:23,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:44:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash 192998807, now seen corresponding path program 1 times [2025-02-05 10:44:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:44:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628605099] [2025-02-05 10:44:23,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:23,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:44:23,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 256 statements into 1 equivalence classes. [2025-02-05 10:44:23,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 256 of 256 statements. [2025-02-05 10:44:23,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:23,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 181 proven. 74 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 10:44:23,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:44:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628605099] [2025-02-05 10:44:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628605099] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:44:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133355537] [2025-02-05 10:44:23,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:44:23,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:44:23,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:44:24,012 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 10:44:24,014 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 10:44:24,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 256 statements into 1 equivalence classes. [2025-02-05 10:44:24,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 256 of 256 statements. [2025-02-05 10:44:24,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:44:24,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:44:24,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:44:24,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:44:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-02-05 10:44:24,484 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:44:24,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133355537] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:44:24,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:44:24,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-02-05 10:44:24,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95853100] [2025-02-05 10:44:24,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:44:24,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:44:24,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:44:24,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:44:24,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:44:24,485 INFO L87 Difference]: Start difference. First operand 1134 states and 1177 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 10:44:24,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:44:24,613 INFO L93 Difference]: Finished difference Result 2123 states and 2208 transitions. [2025-02-05 10:44:24,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:44:24,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 256 [2025-02-05 10:44:24,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:44:24,615 INFO L225 Difference]: With dead ends: 2123 [2025-02-05 10:44:24,615 INFO L226 Difference]: Without dead ends: 0 [2025-02-05 10:44:24,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 256 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 10:44:24,616 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:44:24,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 13 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:44:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-05 10:44:24,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-05 10:44:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 10:44:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-05 10:44:24,617 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 256 [2025-02-05 10:44:24,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:44:24,617 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-05 10:44:24,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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 10:44:24,617 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-05 10:44:24,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-05 10:44:24,620 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 10:44:24,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 10:44:24,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-05 10:44:24,823 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:44:24,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-05 10:44:24,972 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 10:44:24,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 10:44:24 BoogieIcfgContainer [2025-02-05 10:44:24,988 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 10:44:24,989 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 10:44:24,989 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 10:44:24,989 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 10:44:24,989 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:44:18" (3/4) ... [2025-02-05 10:44:24,991 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-05 10:44:25,005 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-05 10:44:25,007 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-05 10:44:25,008 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-05 10:44:25,009 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-05 10:44:25,102 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-05 10:44:25,102 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-05 10:44:25,102 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 10:44:25,104 INFO L158 Benchmark]: Toolchain (without parser) took 8080.28ms. Allocated memory was 142.6MB in the beginning and 343.9MB in the end (delta: 201.3MB). Free memory was 110.5MB in the beginning and 135.3MB in the end (delta: -24.8MB). Peak memory consumption was 178.4MB. Max. memory is 16.1GB. [2025-02-05 10:44:25,104 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 10:44:25,104 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.75ms. Allocated memory is still 142.6MB. Free memory was 110.5MB in the beginning and 85.1MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-05 10:44:25,104 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.64ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 79.3MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 10:44:25,105 INFO L158 Benchmark]: Boogie Preprocessor took 67.21ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 75.8MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 10:44:25,105 INFO L158 Benchmark]: IcfgBuilder took 862.55ms. Allocated memory is still 142.6MB. Free memory was 75.8MB in the beginning and 65.4MB in the end (delta: 10.4MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2025-02-05 10:44:25,105 INFO L158 Benchmark]: TraceAbstraction took 6606.35ms. Allocated memory was 142.6MB in the beginning and 343.9MB in the end (delta: 201.3MB). Free memory was 64.6MB in the beginning and 146.7MB in the end (delta: -82.1MB). Peak memory consumption was 111.6MB. Max. memory is 16.1GB. [2025-02-05 10:44:25,106 INFO L158 Benchmark]: Witness Printer took 113.68ms. Allocated memory is still 343.9MB. Free memory was 146.7MB in the beginning and 135.3MB in the end (delta: 11.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-05 10:44:25,107 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 379.75ms. Allocated memory is still 142.6MB. Free memory was 110.5MB in the beginning and 85.1MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.64ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 79.3MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.21ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 75.8MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 862.55ms. Allocated memory is still 142.6MB. Free memory was 75.8MB in the beginning and 65.4MB in the end (delta: 10.4MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6606.35ms. Allocated memory was 142.6MB in the beginning and 343.9MB in the end (delta: 201.3MB). Free memory was 64.6MB in the beginning and 146.7MB in the end (delta: -82.1MB). Peak memory consumption was 111.6MB. Max. memory is 16.1GB. * Witness Printer took 113.68ms. Allocated memory is still 343.9MB. Free memory was 146.7MB in the beginning and 135.3MB in the end (delta: 11.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 488]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1330 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1330 mSDsluCounter, 1488 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 139 mSDsCounter, 524 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3443 IncrementalHoareTripleChecker+Invalid, 3967 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 524 mSolverCounterUnsat, 1349 mSDtfsCounter, 3443 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1701occurred in iteration=8, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 290 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 2062 NumberOfCodeBlocks, 2062 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2050 ConstructedInterpolants, 0 QuantifiedInterpolants, 3698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 1154/1228 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Location Invariant Derived location invariant: (((((((((((10 <= a28) && (a17 == 8)) && (a25 == 1)) && (a11 <= 0)) || (((((a25 == 1) && (a17 <= 8)) && (a11 <= 0)) && (a19 == 1)) && (a28 <= 7))) || (((a17 == 8) && (a11 <= 0)) && (a25 == 0))) || (((((10 <= a28) && (a17 <= 8)) && (a11 <= 0)) && (a19 == 1)) && (a25 == 0))) || (((((9 <= a28) && (a25 == 1)) && (a17 <= 8)) && (a11 <= 0)) && (a19 == 1))) || ((((a17 == 8) && (a25 == 1)) && (a11 <= 0)) && (a19 == 1))) || ((((a17 == 8) && (a25 == 1)) && (a11 <= 0)) && (a28 <= 7))) || ((a11 == 1) && (a17 <= 8))) RESULT: Ultimate proved your program to be correct! [2025-02-05 10:44:25,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE