./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label38.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 96ba89cb3a10a6781dfc1b6622655a925bd28641990009005f1ed4397d7ee8ac --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:05:16,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:05:17,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:05:17,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:05:17,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:05:17,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:05:17,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:05:17,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:05:17,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:05:17,066 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:05:17,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:05:17,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:05:17,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:05:17,067 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:05:17,068 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:05:17,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:05:17,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:05:17,069 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:05:17,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:05:17,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:05:17,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:05:17,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:05:17,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:05:17,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:05:17,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:05:17,072 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:05:17,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:05:17,073 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:05:17,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:05:17,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:05:17,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:05:17,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:05:17,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:05:17,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:05:17,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:05:17,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:05:17,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:05:17,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:05:17,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:05:17,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:05:17,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:05:17,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:05:17,078 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96ba89cb3a10a6781dfc1b6622655a925bd28641990009005f1ed4397d7ee8ac [2024-10-12 16:05:17,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:05:17,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:05:17,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:05:17,403 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:05:17,404 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:05:17,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label38.c [2024-10-12 16:05:18,881 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:05:19,323 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:05:19,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label38.c [2024-10-12 16:05:19,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a62e7e1/0caa1ef2e2814b6ba9ddac0c3f5f171a/FLAGb13062dfd [2024-10-12 16:05:19,380 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a62e7e1/0caa1ef2e2814b6ba9ddac0c3f5f171a [2024-10-12 16:05:19,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:05:19,385 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:05:19,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:05:19,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:05:19,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:05:19,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:05:19" (1/1) ... [2024-10-12 16:05:19,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558d4b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:19, skipping insertion in model container [2024-10-12 16:05:19,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:05:19" (1/1) ... [2024-10-12 16:05:19,500 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:05:19,753 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label38.c[3304,3317] [2024-10-12 16:05:20,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:05:20,497 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:05:20,518 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label38.c[3304,3317] [2024-10-12 16:05:20,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:05:20,946 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:05:20,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20 WrapperNode [2024-10-12 16:05:20,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:05:20,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:05:20,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:05:20,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:05:20,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,340 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-12 16:05:21,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:05:21,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:05:21,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:05:21,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:05:21,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,646 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]. [2024-10-12 16:05:21,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:21,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:22,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:05:22,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:05:22,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:05:22,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:05:22,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (1/1) ... [2024-10-12 16:05:22,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:05:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:05:22,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:05:22,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:05:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:05:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:05:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:05:22,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:05:22,250 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:05:22,252 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:05:26,345 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-12 16:05:26,346 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:05:26,407 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:05:26,407 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:05:26,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:05:26 BoogieIcfgContainer [2024-10-12 16:05:26,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:05:26,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:05:26,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:05:26,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:05:26,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:05:19" (1/3) ... [2024-10-12 16:05:26,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469c43c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:05:26, skipping insertion in model container [2024-10-12 16:05:26,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:20" (2/3) ... [2024-10-12 16:05:26,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469c43c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:05:26, skipping insertion in model container [2024-10-12 16:05:26,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:05:26" (3/3) ... [2024-10-12 16:05:26,416 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label38.c [2024-10-12 16:05:26,433 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:05:26,433 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:05:26,517 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:05:26,525 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;@2e8bdf57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:05:26,525 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:05:26,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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) [2024-10-12 16:05:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 16:05:26,538 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:26,539 INFO L215 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] [2024-10-12 16:05:26,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:26,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:26,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1728246146, now seen corresponding path program 1 times [2024-10-12 16:05:26,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:26,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665386143] [2024-10-12 16:05:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:26,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:05:26,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:26,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665386143] [2024-10-12 16:05:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665386143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:26,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:26,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:05:26,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537957408] [2024-10-12 16:05:26,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:26,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:05:26,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:05:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:05:26,739 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 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 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-10-12 16:05:26,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:05:26,827 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-12 16:05:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:05:26,838 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2024-10-12 16:05:26,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:05:26,856 INFO L225 Difference]: With dead ends: 1511 [2024-10-12 16:05:26,857 INFO L226 Difference]: Without dead ends: 754 [2024-10-12 16:05:26,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:05:26,866 INFO L432 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:05:26,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:05:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-12 16:05:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-12 16:05:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 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) [2024-10-12 16:05:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-12 16:05:26,943 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 23 [2024-10-12 16:05:26,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:05:26,944 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-12 16:05:26,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-10-12 16:05:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-12 16:05:26,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 16:05:26,945 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:26,945 INFO L215 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] [2024-10-12 16:05:26,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:05:26,946 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:26,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1496572785, now seen corresponding path program 1 times [2024-10-12 16:05:26,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:26,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602780531] [2024-10-12 16:05:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:26,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:05:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602780531] [2024-10-12 16:05:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602780531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:27,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:27,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:05:27,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121557843] [2024-10-12 16:05:27,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:27,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:05:27,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:05:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:05:27,134 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-10-12 16:05:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:05:30,199 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2024-10-12 16:05:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:05:30,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2024-10-12 16:05:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:05:30,211 INFO L225 Difference]: With dead ends: 2258 [2024-10-12 16:05:30,212 INFO L226 Difference]: Without dead ends: 1505 [2024-10-12 16:05:30,214 INFO L431 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 [2024-10-12 16:05:30,215 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 794 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:05:30,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 426 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-12 16:05:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-10-12 16:05:30,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2024-10-12 16:05:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6389627659574468) internal successors, (2465), 1504 states have internal predecessors, (2465), 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) [2024-10-12 16:05:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2465 transitions. [2024-10-12 16:05:30,262 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2465 transitions. Word has length 23 [2024-10-12 16:05:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:05:30,262 INFO L471 AbstractCegarLoop]: Abstraction has 1505 states and 2465 transitions. [2024-10-12 16:05:30,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2024-10-12 16:05:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2465 transitions. [2024-10-12 16:05:30,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 16:05:30,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:30,265 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 16:05:30,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:05:30,266 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:30,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:30,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1435002722, now seen corresponding path program 1 times [2024-10-12 16:05:30,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:30,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17922878] [2024-10-12 16:05:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:30,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:05:30,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:30,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17922878] [2024-10-12 16:05:30,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17922878] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:05:30,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342991510] [2024-10-12 16:05:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:30,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:05:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:05:30,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:05:30,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:05:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:30,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:05:30,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:05:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:05:30,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:05:30,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342991510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:30,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:05:30,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 16:05:30,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656206090] [2024-10-12 16:05:30,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:30,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:05:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:30,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:05:30,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:05:30,792 INFO L87 Difference]: Start difference. First operand 1505 states and 2465 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:05:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:05:34,152 INFO L93 Difference]: Finished difference Result 4511 states and 7392 transitions. [2024-10-12 16:05:34,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:05:34,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-10-12 16:05:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:05:34,165 INFO L225 Difference]: With dead ends: 4511 [2024-10-12 16:05:34,166 INFO L226 Difference]: Without dead ends: 3007 [2024-10-12 16:05:34,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:05:34,171 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 775 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:05:34,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 473 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-12 16:05:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2024-10-12 16:05:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2024-10-12 16:05:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.425482368596141) internal successors, (4285), 3006 states have internal predecessors, (4285), 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) [2024-10-12 16:05:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4285 transitions. [2024-10-12 16:05:34,238 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4285 transitions. Word has length 94 [2024-10-12 16:05:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:05:34,239 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 4285 transitions. [2024-10-12 16:05:34,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:05:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4285 transitions. [2024-10-12 16:05:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-12 16:05:34,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:34,241 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 16:05:34,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 16:05:34,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:05:34,446 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:34,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:34,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1634011688, now seen corresponding path program 1 times [2024-10-12 16:05:34,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:34,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225702899] [2024-10-12 16:05:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:34,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:05:34,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:34,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225702899] [2024-10-12 16:05:34,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225702899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:34,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:34,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:05:34,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271989108] [2024-10-12 16:05:34,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:34,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:05:34,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:05:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:05:34,617 INFO L87 Difference]: Start difference. First operand 3007 states and 4285 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2024-10-12 16:05:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:05:37,206 INFO L93 Difference]: Finished difference Result 9017 states and 12852 transitions. [2024-10-12 16:05:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:05:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2024-10-12 16:05:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:05:37,224 INFO L225 Difference]: With dead ends: 9017 [2024-10-12 16:05:37,224 INFO L226 Difference]: Without dead ends: 6011 [2024-10-12 16:05:37,229 INFO L431 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 [2024-10-12 16:05:37,230 INFO L432 NwaCegarLoop]: 440 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:05:37,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 446 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:05:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2024-10-12 16:05:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 6011. [2024-10-12 16:05:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6011 states, 6010 states have (on average 1.2948419301164726) internal successors, (7782), 6010 states have internal predecessors, (7782), 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) [2024-10-12 16:05:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6011 states to 6011 states and 7782 transitions. [2024-10-12 16:05:37,323 INFO L78 Accepts]: Start accepts. Automaton has 6011 states and 7782 transitions. Word has length 98 [2024-10-12 16:05:37,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:05:37,323 INFO L471 AbstractCegarLoop]: Abstraction has 6011 states and 7782 transitions. [2024-10-12 16:05:37,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2024-10-12 16:05:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 6011 states and 7782 transitions. [2024-10-12 16:05:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-12 16:05:37,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:37,326 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 16:05:37,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:05:37,326 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:37,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1593290359, now seen corresponding path program 1 times [2024-10-12 16:05:37,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:37,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165756109] [2024-10-12 16:05:37,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:37,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:05:37,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165756109] [2024-10-12 16:05:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165756109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:37,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:37,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:05:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098050318] [2024-10-12 16:05:37,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:37,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 16:05:37,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 16:05:37,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:05:37,733 INFO L87 Difference]: Start difference. First operand 6011 states and 7782 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-10-12 16:05:42,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:05:42,326 INFO L93 Difference]: Finished difference Result 16527 states and 20627 transitions. [2024-10-12 16:05:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 16:05:42,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 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 104 [2024-10-12 16:05:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:05:42,353 INFO L225 Difference]: With dead ends: 16527 [2024-10-12 16:05:42,353 INFO L226 Difference]: Without dead ends: 10517 [2024-10-12 16:05:42,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:05:42,364 INFO L432 NwaCegarLoop]: 692 mSDtfsCounter, 3582 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5406 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3582 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 5666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 5406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:05:42,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3582 Valid, 720 Invalid, 5666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 5406 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-10-12 16:05:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10517 states. [2024-10-12 16:05:42,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10517 to 9766. [2024-10-12 16:05:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2041986687147976) internal successors, (11759), 9765 states have internal predecessors, (11759), 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) [2024-10-12 16:05:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 11759 transitions. [2024-10-12 16:05:42,527 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 11759 transitions. Word has length 104 [2024-10-12 16:05:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:05:42,528 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 11759 transitions. [2024-10-12 16:05:42,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-10-12 16:05:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 11759 transitions. [2024-10-12 16:05:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-12 16:05:42,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:42,622 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:05:42,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:05:42,623 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:42,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:42,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1249438280, now seen corresponding path program 1 times [2024-10-12 16:05:42,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:42,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486481309] [2024-10-12 16:05:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:42,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:05:42,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486481309] [2024-10-12 16:05:42,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486481309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:42,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:42,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:05:42,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824548610] [2024-10-12 16:05:42,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:42,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:05:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:05:42,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:05:42,912 INFO L87 Difference]: Start difference. First operand 9766 states and 11759 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 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) [2024-10-12 16:05:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:05:45,918 INFO L93 Difference]: Finished difference Result 25576 states and 30216 transitions. [2024-10-12 16:05:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:05:45,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 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 175 [2024-10-12 16:05:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:05:45,960 INFO L225 Difference]: With dead ends: 25576 [2024-10-12 16:05:45,961 INFO L226 Difference]: Without dead ends: 15774 [2024-10-12 16:05:45,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:05:45,975 INFO L432 NwaCegarLoop]: 692 mSDtfsCounter, 688 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3805 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 4012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:05:45,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 709 Invalid, 4012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3805 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-12 16:05:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15774 states. [2024-10-12 16:05:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15774 to 13521. [2024-10-12 16:05:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13521 states, 13520 states have (on average 1.1523668639053255) internal successors, (15580), 13520 states have internal predecessors, (15580), 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) [2024-10-12 16:05:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 15580 transitions. [2024-10-12 16:05:46,201 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 15580 transitions. Word has length 175 [2024-10-12 16:05:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:05:46,201 INFO L471 AbstractCegarLoop]: Abstraction has 13521 states and 15580 transitions. [2024-10-12 16:05:46,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 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) [2024-10-12 16:05:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 15580 transitions. [2024-10-12 16:05:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-10-12 16:05:46,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:46,206 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:05:46,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:05:46,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:46,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash 504979323, now seen corresponding path program 1 times [2024-10-12 16:05:46,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:46,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183265728] [2024-10-12 16:05:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:46,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-12 16:05:46,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:46,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183265728] [2024-10-12 16:05:46,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183265728] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:46,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:46,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:05:46,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159447939] [2024-10-12 16:05:46,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:46,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:05:46,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:05:46,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:05:46,539 INFO L87 Difference]: Start difference. First operand 13521 states and 15580 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:05:49,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:05:49,261 INFO L93 Difference]: Finished difference Result 35304 states and 41244 transitions. [2024-10-12 16:05:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:05:49,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2024-10-12 16:05:49,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:05:49,307 INFO L225 Difference]: With dead ends: 35304 [2024-10-12 16:05:49,308 INFO L226 Difference]: Without dead ends: 21784 [2024-10-12 16:05:49,326 INFO L431 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 [2024-10-12 16:05:49,328 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:05:49,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 308 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:05:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21784 states. [2024-10-12 16:05:49,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21784 to 21031. [2024-10-12 16:05:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21031 states, 21030 states have (on average 1.1405611031859249) internal successors, (23986), 21030 states have internal predecessors, (23986), 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) [2024-10-12 16:05:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21031 states to 21031 states and 23986 transitions. [2024-10-12 16:05:49,635 INFO L78 Accepts]: Start accepts. Automaton has 21031 states and 23986 transitions. Word has length 236 [2024-10-12 16:05:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:05:49,636 INFO L471 AbstractCegarLoop]: Abstraction has 21031 states and 23986 transitions. [2024-10-12 16:05:49,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:05:49,636 INFO L276 IsEmpty]: Start isEmpty. Operand 21031 states and 23986 transitions. [2024-10-12 16:05:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-10-12 16:05:49,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:49,640 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:05:49,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:05:49,641 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:49,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:49,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1345438147, now seen corresponding path program 1 times [2024-10-12 16:05:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:49,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657692475] [2024-10-12 16:05:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:49,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:05:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657692475] [2024-10-12 16:05:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657692475] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:49,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:05:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650710471] [2024-10-12 16:05:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:49,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:05:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:05:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:05:49,857 INFO L87 Difference]: Start difference. First operand 21031 states and 23986 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2024-10-12 16:05:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:05:52,822 INFO L93 Difference]: Finished difference Result 60085 states and 68806 transitions. [2024-10-12 16:05:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:05:52,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 249 [2024-10-12 16:05:52,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:05:52,880 INFO L225 Difference]: With dead ends: 60085 [2024-10-12 16:05:52,880 INFO L226 Difference]: Without dead ends: 39055 [2024-10-12 16:05:52,901 INFO L431 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 [2024-10-12 16:05:52,903 INFO L432 NwaCegarLoop]: 1381 mSDtfsCounter, 667 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:05:52,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1388 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-12 16:05:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39055 states. [2024-10-12 16:05:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39055 to 35300. [2024-10-12 16:05:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35300 states, 35299 states have (on average 1.137369330575937) internal successors, (40148), 35299 states have internal predecessors, (40148), 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) [2024-10-12 16:05:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35300 states to 35300 states and 40148 transitions. [2024-10-12 16:05:53,373 INFO L78 Accepts]: Start accepts. Automaton has 35300 states and 40148 transitions. Word has length 249 [2024-10-12 16:05:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:05:53,374 INFO L471 AbstractCegarLoop]: Abstraction has 35300 states and 40148 transitions. [2024-10-12 16:05:53,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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) [2024-10-12 16:05:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 35300 states and 40148 transitions. [2024-10-12 16:05:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-12 16:05:53,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:53,378 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:05:53,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:05:53,379 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:53,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1813582457, now seen corresponding path program 1 times [2024-10-12 16:05:53,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:53,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647930619] [2024-10-12 16:05:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:53,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-12 16:05:53,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:53,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647930619] [2024-10-12 16:05:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647930619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:53,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:53,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:05:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318270726] [2024-10-12 16:05:53,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:53,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:05:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:05:53,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:05:53,614 INFO L87 Difference]: Start difference. First operand 35300 states and 40148 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-10-12 16:05:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:05:56,392 INFO L93 Difference]: Finished difference Result 88623 states and 101869 transitions. [2024-10-12 16:05:56,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:05:56,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 253 [2024-10-12 16:05:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:05:56,459 INFO L225 Difference]: With dead ends: 88623 [2024-10-12 16:05:56,459 INFO L226 Difference]: Without dead ends: 53324 [2024-10-12 16:05:56,489 INFO L431 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 [2024-10-12 16:05:56,490 INFO L432 NwaCegarLoop]: 1206 mSDtfsCounter, 751 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:05:56,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1213 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:05:56,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53324 states. [2024-10-12 16:05:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53324 to 53324. [2024-10-12 16:05:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53324 states, 53323 states have (on average 1.111921684826435) internal successors, (59291), 53323 states have internal predecessors, (59291), 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) [2024-10-12 16:05:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53324 states to 53324 states and 59291 transitions. [2024-10-12 16:05:57,194 INFO L78 Accepts]: Start accepts. Automaton has 53324 states and 59291 transitions. Word has length 253 [2024-10-12 16:05:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:05:57,195 INFO L471 AbstractCegarLoop]: Abstraction has 53324 states and 59291 transitions. [2024-10-12 16:05:57,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-10-12 16:05:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 53324 states and 59291 transitions. [2024-10-12 16:05:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-10-12 16:05:57,199 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:05:57,200 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:05:57,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:05:57,200 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:05:57,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:05:57,201 INFO L85 PathProgramCache]: Analyzing trace with hash -261010361, now seen corresponding path program 1 times [2024-10-12 16:05:57,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:05:57,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489038026] [2024-10-12 16:05:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:05:57,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:05:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:05:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-10-12 16:05:57,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:05:57,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489038026] [2024-10-12 16:05:57,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489038026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:05:57,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:05:57,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:05:57,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634296769] [2024-10-12 16:05:57,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:05:57,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:05:57,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:05:57,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:05:57,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:05:57,410 INFO L87 Difference]: Start difference. First operand 53324 states and 59291 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-10-12 16:06:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:00,142 INFO L93 Difference]: Finished difference Result 106647 states and 118581 transitions. [2024-10-12 16:06:00,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:00,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 308 [2024-10-12 16:06:00,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:00,203 INFO L225 Difference]: With dead ends: 106647 [2024-10-12 16:06:00,203 INFO L226 Difference]: Without dead ends: 53324 [2024-10-12 16:06:00,240 INFO L431 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 [2024-10-12 16:06:00,240 INFO L432 NwaCegarLoop]: 1178 mSDtfsCounter, 782 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:00,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1185 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:06:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53324 states. [2024-10-12 16:06:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53324 to 53324. [2024-10-12 16:06:00,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53324 states, 53323 states have (on average 1.0713763291637755) internal successors, (57129), 53323 states have internal predecessors, (57129), 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) [2024-10-12 16:06:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53324 states to 53324 states and 57129 transitions. [2024-10-12 16:06:01,027 INFO L78 Accepts]: Start accepts. Automaton has 53324 states and 57129 transitions. Word has length 308 [2024-10-12 16:06:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:01,028 INFO L471 AbstractCegarLoop]: Abstraction has 53324 states and 57129 transitions. [2024-10-12 16:06:01,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-10-12 16:06:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 53324 states and 57129 transitions. [2024-10-12 16:06:01,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-10-12 16:06:01,037 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:01,037 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:06:01,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:06:01,038 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:01,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash 925264929, now seen corresponding path program 1 times [2024-10-12 16:06:01,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56819872] [2024-10-12 16:06:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-12 16:06:01,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:01,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56819872] [2024-10-12 16:06:01,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56819872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:01,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:01,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:01,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034643062] [2024-10-12 16:06:01,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:01,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:01,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:01,525 INFO L87 Difference]: Start difference. First operand 53324 states and 57129 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:06:04,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:04,366 INFO L93 Difference]: Finished difference Result 122418 states and 132313 transitions. [2024-10-12 16:06:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2024-10-12 16:06:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:04,438 INFO L225 Difference]: With dead ends: 122418 [2024-10-12 16:06:04,438 INFO L226 Difference]: Without dead ends: 66842 [2024-10-12 16:06:04,470 INFO L431 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 [2024-10-12 16:06:04,471 INFO L432 NwaCegarLoop]: 1305 mSDtfsCounter, 769 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:04,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1312 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:06:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66842 states. [2024-10-12 16:06:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66842 to 60083. [2024-10-12 16:06:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60083 states, 60082 states have (on average 1.0693385706201524) internal successors, (64248), 60082 states have internal predecessors, (64248), 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) [2024-10-12 16:06:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60083 states to 60083 states and 64248 transitions. [2024-10-12 16:06:05,326 INFO L78 Accepts]: Start accepts. Automaton has 60083 states and 64248 transitions. Word has length 354 [2024-10-12 16:06:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:05,327 INFO L471 AbstractCegarLoop]: Abstraction has 60083 states and 64248 transitions. [2024-10-12 16:06:05,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:06:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 60083 states and 64248 transitions. [2024-10-12 16:06:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-10-12 16:06:05,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:05,334 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:06:05,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:06:05,334 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:05,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2101512949, now seen corresponding path program 1 times [2024-10-12 16:06:05,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:05,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964882303] [2024-10-12 16:06:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-12 16:06:05,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:05,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964882303] [2024-10-12 16:06:05,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964882303] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:05,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:05,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:05,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151325063] [2024-10-12 16:06:05,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:05,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:05,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:05,782 INFO L87 Difference]: Start difference. First operand 60083 states and 64248 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2024-10-12 16:06:08,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:08,430 INFO L93 Difference]: Finished difference Result 122418 states and 130792 transitions. [2024-10-12 16:06:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:08,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 361 [2024-10-12 16:06:08,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:08,496 INFO L225 Difference]: With dead ends: 122418 [2024-10-12 16:06:08,496 INFO L226 Difference]: Without dead ends: 62336 [2024-10-12 16:06:08,527 INFO L431 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 [2024-10-12 16:06:08,528 INFO L432 NwaCegarLoop]: 1170 mSDtfsCounter, 738 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:08,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1176 Invalid, 2688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:06:08,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62336 states. [2024-10-12 16:06:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62336 to 60834. [2024-10-12 16:06:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60834 states, 60833 states have (on average 1.0462249108214292) internal successors, (63645), 60833 states have internal predecessors, (63645), 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) [2024-10-12 16:06:09,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60834 states to 60834 states and 63645 transitions. [2024-10-12 16:06:09,360 INFO L78 Accepts]: Start accepts. Automaton has 60834 states and 63645 transitions. Word has length 361 [2024-10-12 16:06:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:09,361 INFO L471 AbstractCegarLoop]: Abstraction has 60834 states and 63645 transitions. [2024-10-12 16:06:09,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2024-10-12 16:06:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 60834 states and 63645 transitions. [2024-10-12 16:06:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-10-12 16:06:09,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:09,365 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:06:09,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:06:09,365 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:09,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash 928198235, now seen corresponding path program 1 times [2024-10-12 16:06:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:09,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165967595] [2024-10-12 16:06:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-10-12 16:06:09,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:09,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165967595] [2024-10-12 16:06:09,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165967595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:09,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:09,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:09,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240789926] [2024-10-12 16:06:09,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:09,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:09,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:09,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:09,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:09,893 INFO L87 Difference]: Start difference. First operand 60834 states and 63645 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:06:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:12,315 INFO L93 Difference]: Finished difference Result 135185 states and 141478 transitions. [2024-10-12 16:06:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:12,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2024-10-12 16:06:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:12,388 INFO L225 Difference]: With dead ends: 135185 [2024-10-12 16:06:12,388 INFO L226 Difference]: Without dead ends: 68344 [2024-10-12 16:06:12,413 INFO L431 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 [2024-10-12 16:06:12,413 INFO L432 NwaCegarLoop]: 1361 mSDtfsCounter, 748 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:12,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1368 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-12 16:06:12,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68344 states. [2024-10-12 16:06:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68344 to 59332. [2024-10-12 16:06:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59332 states, 59331 states have (on average 1.0410240852168344) internal successors, (61765), 59331 states have internal predecessors, (61765), 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) [2024-10-12 16:06:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59332 states to 59332 states and 61765 transitions. [2024-10-12 16:06:13,100 INFO L78 Accepts]: Start accepts. Automaton has 59332 states and 61765 transitions. Word has length 382 [2024-10-12 16:06:13,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:13,101 INFO L471 AbstractCegarLoop]: Abstraction has 59332 states and 61765 transitions. [2024-10-12 16:06:13,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:06:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 59332 states and 61765 transitions. [2024-10-12 16:06:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-10-12 16:06:13,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:13,109 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:06:13,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:06:13,109 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:13,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:13,110 INFO L85 PathProgramCache]: Analyzing trace with hash -783573117, now seen corresponding path program 1 times [2024-10-12 16:06:13,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:13,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554086466] [2024-10-12 16:06:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:13,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 16:06:13,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:13,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554086466] [2024-10-12 16:06:13,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554086466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:13,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:13,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:06:13,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109415630] [2024-10-12 16:06:13,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:13,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:13,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:13,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:06:13,780 INFO L87 Difference]: Start difference. First operand 59332 states and 61765 transitions. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:06:16,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:16,642 INFO L93 Difference]: Finished difference Result 146452 states and 153011 transitions. [2024-10-12 16:06:16,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:16,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 437 [2024-10-12 16:06:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:16,741 INFO L225 Difference]: With dead ends: 146452 [2024-10-12 16:06:16,741 INFO L226 Difference]: Without dead ends: 87872 [2024-10-12 16:06:16,781 INFO L431 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 [2024-10-12 16:06:16,782 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 715 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:16,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 530 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:06:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87872 states. [2024-10-12 16:06:17,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87872 to 84115. [2024-10-12 16:06:17,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84115 states, 84114 states have (on average 1.041883634115605) internal successors, (87637), 84114 states have internal predecessors, (87637), 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) [2024-10-12 16:06:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84115 states to 84115 states and 87637 transitions. [2024-10-12 16:06:17,986 INFO L78 Accepts]: Start accepts. Automaton has 84115 states and 87637 transitions. Word has length 437 [2024-10-12 16:06:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:17,987 INFO L471 AbstractCegarLoop]: Abstraction has 84115 states and 87637 transitions. [2024-10-12 16:06:17,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:06:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 84115 states and 87637 transitions. [2024-10-12 16:06:17,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-10-12 16:06:17,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:17,995 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:06:17,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:06:17,995 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:17,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1208849357, now seen corresponding path program 1 times [2024-10-12 16:06:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:17,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113337013] [2024-10-12 16:06:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:17,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 322 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:06:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113337013] [2024-10-12 16:06:18,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113337013] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:06:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779895818] [2024-10-12 16:06:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:18,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:06:18,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:06:18,943 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:06:18,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:06:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:19,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:06:19,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:06:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 16:06:19,270 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:06:19,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779895818] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:19,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:06:19,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 16:06:19,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262886473] [2024-10-12 16:06:19,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:19,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:06:19,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:06:19,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:06:19,273 INFO L87 Difference]: Start difference. First operand 84115 states and 87637 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2024-10-12 16:06:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:22,085 INFO L93 Difference]: Finished difference Result 203526 states and 212450 transitions. [2024-10-12 16:06:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:06:22,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 441 [2024-10-12 16:06:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:22,431 INFO L225 Difference]: With dead ends: 203526 [2024-10-12 16:06:22,431 INFO L226 Difference]: Without dead ends: 120163 [2024-10-12 16:06:22,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:06:22,473 INFO L432 NwaCegarLoop]: 1184 mSDtfsCounter, 696 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:22,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1190 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:06:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120163 states. [2024-10-12 16:06:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120163 to 112653. [2024-10-12 16:06:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112653 states, 112652 states have (on average 1.0420498526435393) internal successors, (117389), 112652 states have internal predecessors, (117389), 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) [2024-10-12 16:06:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112653 states to 112653 states and 117389 transitions. [2024-10-12 16:06:23,898 INFO L78 Accepts]: Start accepts. Automaton has 112653 states and 117389 transitions. Word has length 441 [2024-10-12 16:06:23,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:23,899 INFO L471 AbstractCegarLoop]: Abstraction has 112653 states and 117389 transitions. [2024-10-12 16:06:23,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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) [2024-10-12 16:06:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 112653 states and 117389 transitions. [2024-10-12 16:06:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-10-12 16:06:23,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:23,924 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:06:23,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 16:06:24,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 16:06:24,125 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:24,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash 233071310, now seen corresponding path program 1 times [2024-10-12 16:06:24,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:24,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179850980] [2024-10-12 16:06:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:24,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 16:06:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179850980] [2024-10-12 16:06:25,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179850980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:25,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:25,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:06:25,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827127382] [2024-10-12 16:06:25,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:25,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:06:25,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:06:25,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:06:25,747 INFO L87 Difference]: Start difference. First operand 112653 states and 117389 transitions. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2024-10-12 16:06:30,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:06:30,680 INFO L93 Difference]: Finished difference Result 296650 states and 309702 transitions. [2024-10-12 16:06:30,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:06:30,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 601 [2024-10-12 16:06:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:06:30,893 INFO L225 Difference]: With dead ends: 296650 [2024-10-12 16:06:30,893 INFO L226 Difference]: Without dead ends: 184749 [2024-10-12 16:06:30,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:06:30,974 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1430 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4391 mSolverCounterSat, 1233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 5624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1233 IncrementalHoareTripleChecker+Valid, 4391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:06:30,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 44 Invalid, 5624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1233 Valid, 4391 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-10-12 16:06:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184749 states. [2024-10-12 16:06:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184749 to 156962. [2024-10-12 16:06:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156962 states, 156961 states have (on average 1.0401055039149854) internal successors, (163256), 156961 states have internal predecessors, (163256), 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) [2024-10-12 16:06:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156962 states to 156962 states and 163256 transitions. [2024-10-12 16:06:33,082 INFO L78 Accepts]: Start accepts. Automaton has 156962 states and 163256 transitions. Word has length 601 [2024-10-12 16:06:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:06:33,082 INFO L471 AbstractCegarLoop]: Abstraction has 156962 states and 163256 transitions. [2024-10-12 16:06:33,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2024-10-12 16:06:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 156962 states and 163256 transitions. [2024-10-12 16:06:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2024-10-12 16:06:33,490 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:06:33,496 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:06:33,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:06:33,497 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:06:33,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:06:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1429716738, now seen corresponding path program 1 times [2024-10-12 16:06:33,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:06:33,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629918418] [2024-10-12 16:06:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:06:33,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:06:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:06:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-10-12 16:06:34,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:06:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629918418] [2024-10-12 16:06:34,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629918418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:06:34,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:06:34,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:06:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062558747] [2024-10-12 16:06:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:06:34,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:06:34,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:06:34,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:06:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:06:34,537 INFO L87 Difference]: Start difference. First operand 156962 states and 163256 transitions. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 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)