./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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 60c415120e2678b24f3b884ebcebefc19905a98d476a557ead28c297441bd0dd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 20:17:22,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 20:17:22,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 20:17:22,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 20:17:22,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 20:17:22,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 20:17:22,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 20:17:22,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 20:17:22,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 20:17:22,973 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 20:17:22,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 20:17:22,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 20:17:22,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 20:17:22,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 20:17:22,975 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 20:17:22,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 20:17:22,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 20:17:22,976 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 20:17:22,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 20:17:22,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 20:17:22,977 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 20:17:22,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 20:17:22,978 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 20:17:22,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 20:17:22,979 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 20:17:22,979 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 20:17:22,979 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 20:17:22,980 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 20:17:22,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 20:17:22,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 20:17:22,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 20:17:22,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 20:17:22,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:17:22,982 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 20:17:22,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 20:17:22,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 20:17:22,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 20:17:22,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 20:17:22,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 20:17:22,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 20:17:22,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 20:17:22,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 20:17:22,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60c415120e2678b24f3b884ebcebefc19905a98d476a557ead28c297441bd0dd [2024-10-12 20:17:23,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 20:17:23,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 20:17:23,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 20:17:23,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 20:17:23,255 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 20:17:23,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-12 20:17:24,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 20:17:25,016 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 20:17:25,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-12 20:17:25,042 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/addbca202/63b4e286c8c949a59661f4a50875d112/FLAGf7d0413e7 [2024-10-12 20:17:25,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/addbca202/63b4e286c8c949a59661f4a50875d112 [2024-10-12 20:17:25,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 20:17:25,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 20:17:25,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 20:17:25,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 20:17:25,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 20:17:25,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55826e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25, skipping insertion in model container [2024-10-12 20:17:25,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,132 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 20:17:25,437 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/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2024-10-12 20:17:25,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:17:25,526 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 20:17:25,601 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/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2024-10-12 20:17:25,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 20:17:25,667 INFO L204 MainTranslator]: Completed translation [2024-10-12 20:17:25,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25 WrapperNode [2024-10-12 20:17:25,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 20:17:25,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 20:17:25,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 20:17:25,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 20:17:25,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,748 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1367 [2024-10-12 20:17:25,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 20:17:25,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 20:17:25,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 20:17:25,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 20:17:25,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,780 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,824 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 20:17:25,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,865 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,874 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 20:17:25,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 20:17:25,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 20:17:25,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 20:17:25,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (1/1) ... [2024-10-12 20:17:25,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 20:17:25,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 20:17:25,944 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 20:17:25,950 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 20:17:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 20:17:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 20:17:25,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 20:17:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 20:17:26,170 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 20:17:26,172 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 20:17:27,408 INFO L? ?]: Removed 119 outVars from TransFormulas that were not future-live. [2024-10-12 20:17:27,409 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 20:17:27,485 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 20:17:27,488 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 20:17:27,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:17:27 BoogieIcfgContainer [2024-10-12 20:17:27,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 20:17:27,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 20:17:27,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 20:17:27,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 20:17:27,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:17:25" (1/3) ... [2024-10-12 20:17:27,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7b7a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:17:27, skipping insertion in model container [2024-10-12 20:17:27,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:17:25" (2/3) ... [2024-10-12 20:17:27,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7b7a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:17:27, skipping insertion in model container [2024-10-12 20:17:27,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:17:27" (3/3) ... [2024-10-12 20:17:27,527 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-10-12 20:17:27,544 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 20:17:27,545 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 20:17:27,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 20:17:27,634 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;@1668ef93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 20:17:27,635 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 20:17:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 1.8012422360248448) internal successors, (580), 323 states have internal predecessors, (580), 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 20:17:27,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-12 20:17:27,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:27,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:27,664 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:27,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1684200636, now seen corresponding path program 1 times [2024-10-12 20:17:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:27,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206148686] [2024-10-12 20:17:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:27,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:28,337 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 20:17:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206148686] [2024-10-12 20:17:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206148686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:28,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:28,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056570237] [2024-10-12 20:17:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:28,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:28,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:28,382 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 1.8012422360248448) internal successors, (580), 323 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:28,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:28,552 INFO L93 Difference]: Finished difference Result 585 states and 1017 transitions. [2024-10-12 20:17:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:28,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-10-12 20:17:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:28,570 INFO L225 Difference]: With dead ends: 585 [2024-10-12 20:17:28,570 INFO L226 Difference]: Without dead ends: 445 [2024-10-12 20:17:28,573 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 20:17:28,577 INFO L432 NwaCegarLoop]: 570 mSDtfsCounter, 231 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:28,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1066 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:17:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-10-12 20:17:28,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 442. [2024-10-12 20:17:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.6621315192743764) internal successors, (733), 441 states have internal predecessors, (733), 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 20:17:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 733 transitions. [2024-10-12 20:17:28,641 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 733 transitions. Word has length 109 [2024-10-12 20:17:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:28,642 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 733 transitions. [2024-10-12 20:17:28,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 733 transitions. [2024-10-12 20:17:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 20:17:28,647 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:28,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:28,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 20:17:28,648 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:28,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:28,649 INFO L85 PathProgramCache]: Analyzing trace with hash 64332195, now seen corresponding path program 1 times [2024-10-12 20:17:28,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:28,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448278882] [2024-10-12 20:17:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:28,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:28,977 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 20:17:28,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:28,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448278882] [2024-10-12 20:17:28,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448278882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:28,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:28,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:28,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140633909] [2024-10-12 20:17:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:28,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:28,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:28,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:28,983 INFO L87 Difference]: Start difference. First operand 442 states and 733 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 20:17:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:29,039 INFO L93 Difference]: Finished difference Result 932 states and 1549 transitions. [2024-10-12 20:17:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:29,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2024-10-12 20:17:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:29,046 INFO L225 Difference]: With dead ends: 932 [2024-10-12 20:17:29,046 INFO L226 Difference]: Without dead ends: 678 [2024-10-12 20:17:29,047 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 20:17:29,051 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 200 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:29,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1026 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-10-12 20:17:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 674. [2024-10-12 20:17:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.6597325408618129) internal successors, (1117), 673 states have internal predecessors, (1117), 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 20:17:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1117 transitions. [2024-10-12 20:17:29,085 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1117 transitions. Word has length 112 [2024-10-12 20:17:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:29,086 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1117 transitions. [2024-10-12 20:17:29,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 20:17:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1117 transitions. [2024-10-12 20:17:29,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-12 20:17:29,088 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:29,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:29,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 20:17:29,089 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:29,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:29,093 INFO L85 PathProgramCache]: Analyzing trace with hash 338851648, now seen corresponding path program 1 times [2024-10-12 20:17:29,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:29,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965897196] [2024-10-12 20:17:29,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:29,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:29,342 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 20:17:29,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:29,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965897196] [2024-10-12 20:17:29,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965897196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:29,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:29,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:29,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255666276] [2024-10-12 20:17:29,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:29,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:29,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:29,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:29,347 INFO L87 Difference]: Start difference. First operand 674 states and 1117 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 20:17:29,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:29,393 INFO L93 Difference]: Finished difference Result 1610 states and 2667 transitions. [2024-10-12 20:17:29,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:29,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2024-10-12 20:17:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:29,401 INFO L225 Difference]: With dead ends: 1610 [2024-10-12 20:17:29,401 INFO L226 Difference]: Without dead ends: 1124 [2024-10-12 20:17:29,403 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 20:17:29,404 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 194 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:29,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1027 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-10-12 20:17:29,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1118. [2024-10-12 20:17:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1117 states have (on average 1.6517457475380484) internal successors, (1845), 1117 states have internal predecessors, (1845), 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 20:17:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1845 transitions. [2024-10-12 20:17:29,441 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1845 transitions. Word has length 115 [2024-10-12 20:17:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:29,443 INFO L471 AbstractCegarLoop]: Abstraction has 1118 states and 1845 transitions. [2024-10-12 20:17:29,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 20:17:29,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1845 transitions. [2024-10-12 20:17:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-12 20:17:29,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:29,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:29,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 20:17:29,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:29,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:29,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2139714335, now seen corresponding path program 1 times [2024-10-12 20:17:29,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:29,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036103642] [2024-10-12 20:17:29,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:29,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:29,658 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 20:17:29,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:29,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036103642] [2024-10-12 20:17:29,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036103642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:29,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:29,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:29,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48952599] [2024-10-12 20:17:29,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:29,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:29,661 INFO L87 Difference]: Start difference. First operand 1118 states and 1845 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 20:17:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:29,731 INFO L93 Difference]: Finished difference Result 2906 states and 4783 transitions. [2024-10-12 20:17:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:29,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 118 [2024-10-12 20:17:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:29,759 INFO L225 Difference]: With dead ends: 2906 [2024-10-12 20:17:29,759 INFO L226 Difference]: Without dead ends: 1976 [2024-10-12 20:17:29,763 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 20:17:29,765 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 188 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:29,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1028 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2024-10-12 20:17:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1966. [2024-10-12 20:17:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1965 states have (on average 1.6391857506361323) internal successors, (3221), 1965 states have internal predecessors, (3221), 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 20:17:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3221 transitions. [2024-10-12 20:17:29,815 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3221 transitions. Word has length 118 [2024-10-12 20:17:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:29,816 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 3221 transitions. [2024-10-12 20:17:29,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 20:17:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3221 transitions. [2024-10-12 20:17:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-12 20:17:29,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:29,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:29,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 20:17:29,819 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:29,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:29,820 INFO L85 PathProgramCache]: Analyzing trace with hash 949471684, now seen corresponding path program 1 times [2024-10-12 20:17:29,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:29,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307299924] [2024-10-12 20:17:29,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:29,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:30,080 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 20:17:30,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:30,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307299924] [2024-10-12 20:17:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307299924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:30,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:30,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:17:30,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55121893] [2024-10-12 20:17:30,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:30,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:17:30,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:17:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:17:30,085 INFO L87 Difference]: Start difference. First operand 1966 states and 3221 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 20:17:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:30,419 INFO L93 Difference]: Finished difference Result 10222 states and 16897 transitions. [2024-10-12 20:17:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 20:17:30,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 121 [2024-10-12 20:17:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:30,453 INFO L225 Difference]: With dead ends: 10222 [2024-10-12 20:17:30,453 INFO L226 Difference]: Without dead ends: 8444 [2024-10-12 20:17:30,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-12 20:17:30,461 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 2115 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:30,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 3918 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:17:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8444 states. [2024-10-12 20:17:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8444 to 3624. [2024-10-12 20:17:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 1.638421197902291) internal successors, (5936), 3623 states have internal predecessors, (5936), 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 20:17:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 5936 transitions. [2024-10-12 20:17:30,595 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 5936 transitions. Word has length 121 [2024-10-12 20:17:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:30,595 INFO L471 AbstractCegarLoop]: Abstraction has 3624 states and 5936 transitions. [2024-10-12 20:17:30,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 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 20:17:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 5936 transitions. [2024-10-12 20:17:30,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-10-12 20:17:30,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:30,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:30,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 20:17:30,600 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:30,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash -698210882, now seen corresponding path program 1 times [2024-10-12 20:17:30,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792313319] [2024-10-12 20:17:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:30,832 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 20:17:30,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:30,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792313319] [2024-10-12 20:17:30,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792313319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:30,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:30,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:17:30,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539912316] [2024-10-12 20:17:30,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:30,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:17:30,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:30,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:17:30,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:17:30,836 INFO L87 Difference]: Start difference. First operand 3624 states and 5936 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 20:17:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:30,978 INFO L93 Difference]: Finished difference Result 10604 states and 17474 transitions. [2024-10-12 20:17:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:17:30,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2024-10-12 20:17:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:31,010 INFO L225 Difference]: With dead ends: 10604 [2024-10-12 20:17:31,011 INFO L226 Difference]: Without dead ends: 7168 [2024-10-12 20:17:31,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:17:31,021 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 658 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:31,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1761 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:17:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7168 states. [2024-10-12 20:17:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7168 to 5379. [2024-10-12 20:17:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.6418743027147638) internal successors, (8830), 5378 states have internal predecessors, (8830), 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 20:17:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8830 transitions. [2024-10-12 20:17:31,185 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8830 transitions. Word has length 122 [2024-10-12 20:17:31,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:31,187 INFO L471 AbstractCegarLoop]: Abstraction has 5379 states and 8830 transitions. [2024-10-12 20:17:31,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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 20:17:31,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8830 transitions. [2024-10-12 20:17:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-10-12 20:17:31,191 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:31,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:31,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 20:17:31,191 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:31,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash -232204853, now seen corresponding path program 1 times [2024-10-12 20:17:31,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:31,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447706396] [2024-10-12 20:17:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:31,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:31,350 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 20:17:31,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:31,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447706396] [2024-10-12 20:17:31,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447706396] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:31,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:31,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:17:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929679903] [2024-10-12 20:17:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:31,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:17:31,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:31,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:17:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:17:31,354 INFO L87 Difference]: Start difference. First operand 5379 states and 8830 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 20:17:31,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:31,532 INFO L93 Difference]: Finished difference Result 15776 states and 25980 transitions. [2024-10-12 20:17:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:17:31,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 123 [2024-10-12 20:17:31,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:31,574 INFO L225 Difference]: With dead ends: 15776 [2024-10-12 20:17:31,574 INFO L226 Difference]: Without dead ends: 10585 [2024-10-12 20:17:31,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:17:31,588 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 656 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:31,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1651 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:17:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10585 states. [2024-10-12 20:17:31,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 7958. [2024-10-12 20:17:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7958 states, 7957 states have (on average 1.6406937287922585) internal successors, (13055), 7957 states have internal predecessors, (13055), 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 20:17:31,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7958 states to 7958 states and 13055 transitions. [2024-10-12 20:17:31,807 INFO L78 Accepts]: Start accepts. Automaton has 7958 states and 13055 transitions. Word has length 123 [2024-10-12 20:17:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:31,808 INFO L471 AbstractCegarLoop]: Abstraction has 7958 states and 13055 transitions. [2024-10-12 20:17:31,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 20:17:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 7958 states and 13055 transitions. [2024-10-12 20:17:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:17:31,813 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:31,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:31,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 20:17:31,814 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:31,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:31,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1393040642, now seen corresponding path program 1 times [2024-10-12 20:17:31,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:31,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500578555] [2024-10-12 20:17:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:31,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:31,937 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 20:17:31,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:31,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500578555] [2024-10-12 20:17:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500578555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:31,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:31,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:31,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538688240] [2024-10-12 20:17:31,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:31,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:31,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:31,940 INFO L87 Difference]: Start difference. First operand 7958 states and 13055 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:32,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:32,053 INFO L93 Difference]: Finished difference Result 15655 states and 25738 transitions. [2024-10-12 20:17:32,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:32,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-10-12 20:17:32,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:32,077 INFO L225 Difference]: With dead ends: 15655 [2024-10-12 20:17:32,077 INFO L226 Difference]: Without dead ends: 11379 [2024-10-12 20:17:32,087 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 20:17:32,089 INFO L432 NwaCegarLoop]: 617 mSDtfsCounter, 193 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:32,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11379 states. [2024-10-12 20:17:32,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11379 to 11377. [2024-10-12 20:17:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11377 states, 11376 states have (on average 1.6374824191279886) internal successors, (18628), 11376 states have internal predecessors, (18628), 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 20:17:32,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11377 states to 11377 states and 18628 transitions. [2024-10-12 20:17:32,298 INFO L78 Accepts]: Start accepts. Automaton has 11377 states and 18628 transitions. Word has length 124 [2024-10-12 20:17:32,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:32,299 INFO L471 AbstractCegarLoop]: Abstraction has 11377 states and 18628 transitions. [2024-10-12 20:17:32,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:32,299 INFO L276 IsEmpty]: Start isEmpty. Operand 11377 states and 18628 transitions. [2024-10-12 20:17:32,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:17:32,302 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:32,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:32,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 20:17:32,303 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:32,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:32,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1101994650, now seen corresponding path program 1 times [2024-10-12 20:17:32,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:32,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032885608] [2024-10-12 20:17:32,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:32,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:32,463 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 20:17:32,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032885608] [2024-10-12 20:17:32,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032885608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:32,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:32,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:32,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695771821] [2024-10-12 20:17:32,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:32,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:32,465 INFO L87 Difference]: Start difference. First operand 11377 states and 18628 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:32,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:32,546 INFO L93 Difference]: Finished difference Result 22087 states and 36262 transitions. [2024-10-12 20:17:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-10-12 20:17:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:32,579 INFO L225 Difference]: With dead ends: 22087 [2024-10-12 20:17:32,579 INFO L226 Difference]: Without dead ends: 16095 [2024-10-12 20:17:32,596 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 20:17:32,597 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 187 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:32,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1092 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16095 states. [2024-10-12 20:17:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16095 to 16093. [2024-10-12 20:17:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16093 states, 16092 states have (on average 1.6341039025602784) internal successors, (26296), 16092 states have internal predecessors, (26296), 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 20:17:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16093 states to 16093 states and 26296 transitions. [2024-10-12 20:17:33,034 INFO L78 Accepts]: Start accepts. Automaton has 16093 states and 26296 transitions. Word has length 124 [2024-10-12 20:17:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:33,034 INFO L471 AbstractCegarLoop]: Abstraction has 16093 states and 26296 transitions. [2024-10-12 20:17:33,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 16093 states and 26296 transitions. [2024-10-12 20:17:33,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:17:33,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:33,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:33,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 20:17:33,039 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:33,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1333638181, now seen corresponding path program 1 times [2024-10-12 20:17:33,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:33,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016743471] [2024-10-12 20:17:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:33,353 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 20:17:33,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016743471] [2024-10-12 20:17:33,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016743471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:33,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:33,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:17:33,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79017270] [2024-10-12 20:17:33,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:33,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:17:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:17:33,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:17:33,356 INFO L87 Difference]: Start difference. First operand 16093 states and 26296 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:33,571 INFO L93 Difference]: Finished difference Result 50959 states and 83571 transitions. [2024-10-12 20:17:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:17:33,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-10-12 20:17:33,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:33,651 INFO L225 Difference]: With dead ends: 50959 [2024-10-12 20:17:33,651 INFO L226 Difference]: Without dead ends: 35473 [2024-10-12 20:17:33,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:17:33,688 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 654 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:33,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1548 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:17:33,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35473 states. [2024-10-12 20:17:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35473 to 25731. [2024-10-12 20:17:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25731 states, 25730 states have (on average 1.632568985619899) internal successors, (42006), 25730 states have internal predecessors, (42006), 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 20:17:34,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25731 states to 25731 states and 42006 transitions. [2024-10-12 20:17:34,347 INFO L78 Accepts]: Start accepts. Automaton has 25731 states and 42006 transitions. Word has length 124 [2024-10-12 20:17:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:34,347 INFO L471 AbstractCegarLoop]: Abstraction has 25731 states and 42006 transitions. [2024-10-12 20:17:34,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 25731 states and 42006 transitions. [2024-10-12 20:17:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:17:34,350 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:34,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:34,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 20:17:34,351 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:34,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1933285482, now seen corresponding path program 1 times [2024-10-12 20:17:34,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:34,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121159977] [2024-10-12 20:17:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:34,470 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 20:17:34,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:34,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121159977] [2024-10-12 20:17:34,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121159977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:34,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:34,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:34,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164658857] [2024-10-12 20:17:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:34,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:34,473 INFO L87 Difference]: Start difference. First operand 25731 states and 42006 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:34,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:34,794 INFO L93 Difference]: Finished difference Result 55909 states and 91584 transitions. [2024-10-12 20:17:34,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:34,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-10-12 20:17:34,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:34,889 INFO L225 Difference]: With dead ends: 55909 [2024-10-12 20:17:34,889 INFO L226 Difference]: Without dead ends: 38186 [2024-10-12 20:17:34,925 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 20:17:34,926 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 199 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:34,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1163 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38186 states. [2024-10-12 20:17:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38186 to 38184. [2024-10-12 20:17:35,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38184 states, 38183 states have (on average 1.630280491318126) internal successors, (62249), 38183 states have internal predecessors, (62249), 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 20:17:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38184 states to 38184 states and 62249 transitions. [2024-10-12 20:17:35,817 INFO L78 Accepts]: Start accepts. Automaton has 38184 states and 62249 transitions. Word has length 124 [2024-10-12 20:17:35,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:35,817 INFO L471 AbstractCegarLoop]: Abstraction has 38184 states and 62249 transitions. [2024-10-12 20:17:35,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 38184 states and 62249 transitions. [2024-10-12 20:17:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 20:17:35,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:35,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:35,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 20:17:35,820 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:35,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash 701976565, now seen corresponding path program 1 times [2024-10-12 20:17:35,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:35,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987428351] [2024-10-12 20:17:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:35,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:35,923 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 20:17:35,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:35,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987428351] [2024-10-12 20:17:35,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987428351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:35,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:35,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 20:17:35,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855552814] [2024-10-12 20:17:35,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:35,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 20:17:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:35,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 20:17:35,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 20:17:35,926 INFO L87 Difference]: Start difference. First operand 38184 states and 62249 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:36,288 INFO L93 Difference]: Finished difference Result 83691 states and 137538 transitions. [2024-10-12 20:17:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 20:17:36,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-10-12 20:17:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:36,405 INFO L225 Difference]: With dead ends: 83691 [2024-10-12 20:17:36,405 INFO L226 Difference]: Without dead ends: 56810 [2024-10-12 20:17:36,450 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 20:17:36,451 INFO L432 NwaCegarLoop]: 702 mSDtfsCounter, 205 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:36,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1201 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:36,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56810 states. [2024-10-12 20:17:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56810 to 56808. [2024-10-12 20:17:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56808 states, 56807 states have (on average 1.6321404052317496) internal successors, (92717), 56807 states have internal predecessors, (92717), 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 20:17:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56808 states to 56808 states and 92717 transitions. [2024-10-12 20:17:37,597 INFO L78 Accepts]: Start accepts. Automaton has 56808 states and 92717 transitions. Word has length 124 [2024-10-12 20:17:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:37,598 INFO L471 AbstractCegarLoop]: Abstraction has 56808 states and 92717 transitions. [2024-10-12 20:17:37,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand 56808 states and 92717 transitions. [2024-10-12 20:17:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-12 20:17:37,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:37,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:37,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 20:17:37,600 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:37,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1660277294, now seen corresponding path program 1 times [2024-10-12 20:17:37,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:37,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250628449] [2024-10-12 20:17:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:37,983 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 20:17:37,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:37,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250628449] [2024-10-12 20:17:37,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250628449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:37,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:37,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 20:17:37,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347723209] [2024-10-12 20:17:37,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:37,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 20:17:37,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:37,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 20:17:37,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 20:17:37,987 INFO L87 Difference]: Start difference. First operand 56808 states and 92717 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 20:17:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:38,792 INFO L93 Difference]: Finished difference Result 182061 states and 297982 transitions. [2024-10-12 20:17:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 20:17:38,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 125 [2024-10-12 20:17:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:39,099 INFO L225 Difference]: With dead ends: 182061 [2024-10-12 20:17:39,100 INFO L226 Difference]: Without dead ends: 125496 [2024-10-12 20:17:39,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:17:39,174 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 652 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:39,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1764 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:17:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125496 states. [2024-10-12 20:17:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125496 to 90927. [2024-10-12 20:17:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90927 states, 90926 states have (on average 1.628467105118448) internal successors, (148070), 90926 states have internal predecessors, (148070), 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 20:17:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90927 states to 90927 states and 148070 transitions. [2024-10-12 20:17:40,783 INFO L78 Accepts]: Start accepts. Automaton has 90927 states and 148070 transitions. Word has length 125 [2024-10-12 20:17:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:40,783 INFO L471 AbstractCegarLoop]: Abstraction has 90927 states and 148070 transitions. [2024-10-12 20:17:40,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 20:17:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 90927 states and 148070 transitions. [2024-10-12 20:17:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-12 20:17:40,785 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:40,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:40,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 20:17:40,785 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:40,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:40,786 INFO L85 PathProgramCache]: Analyzing trace with hash 684049603, now seen corresponding path program 1 times [2024-10-12 20:17:40,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:40,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376125095] [2024-10-12 20:17:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:40,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:41,555 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 20:17:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:41,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376125095] [2024-10-12 20:17:41,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376125095] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:41,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:41,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:17:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113448409] [2024-10-12 20:17:41,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:41,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:17:41,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:17:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:17:41,558 INFO L87 Difference]: Start difference. First operand 90927 states and 148070 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 20:17:42,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:42,155 INFO L93 Difference]: Finished difference Result 181613 states and 295751 transitions. [2024-10-12 20:17:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:17:42,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 127 [2024-10-12 20:17:42,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:42,669 INFO L225 Difference]: With dead ends: 181613 [2024-10-12 20:17:42,669 INFO L226 Difference]: Without dead ends: 90929 [2024-10-12 20:17:42,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:17:42,754 INFO L432 NwaCegarLoop]: 530 mSDtfsCounter, 192 mSDsluCounter, 2012 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:42,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 2542 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:17:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90929 states. [2024-10-12 20:17:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90929 to 90927. [2024-10-12 20:17:44,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90927 states, 90926 states have (on average 1.6215933836306446) internal successors, (147445), 90926 states have internal predecessors, (147445), 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 20:17:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90927 states to 90927 states and 147445 transitions. [2024-10-12 20:17:44,229 INFO L78 Accepts]: Start accepts. Automaton has 90927 states and 147445 transitions. Word has length 127 [2024-10-12 20:17:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:44,229 INFO L471 AbstractCegarLoop]: Abstraction has 90927 states and 147445 transitions. [2024-10-12 20:17:44,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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 20:17:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 90927 states and 147445 transitions. [2024-10-12 20:17:44,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-12 20:17:44,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:44,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:44,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 20:17:44,231 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:44,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1148518135, now seen corresponding path program 1 times [2024-10-12 20:17:44,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:44,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146870335] [2024-10-12 20:17:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:44,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:44,552 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 20:17:44,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:44,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146870335] [2024-10-12 20:17:44,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146870335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:44,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:44,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:17:44,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548768336] [2024-10-12 20:17:44,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:44,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:17:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:17:44,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:17:44,555 INFO L87 Difference]: Start difference. First operand 90927 states and 147445 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:45,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:45,766 INFO L93 Difference]: Finished difference Result 265771 states and 431467 transitions. [2024-10-12 20:17:45,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:17:45,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2024-10-12 20:17:45,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:46,041 INFO L225 Difference]: With dead ends: 265771 [2024-10-12 20:17:46,041 INFO L226 Difference]: Without dead ends: 175087 [2024-10-12 20:17:46,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-10-12 20:17:46,112 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 377 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:46,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 2050 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:17:46,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175087 states. [2024-10-12 20:17:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175087 to 175085. [2024-10-12 20:17:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175085 states, 175084 states have (on average 1.6129058052134975) internal successors, (282394), 175084 states have internal predecessors, (282394), 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 20:17:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175085 states to 175085 states and 282394 transitions. [2024-10-12 20:17:48,806 INFO L78 Accepts]: Start accepts. Automaton has 175085 states and 282394 transitions. Word has length 130 [2024-10-12 20:17:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:48,807 INFO L471 AbstractCegarLoop]: Abstraction has 175085 states and 282394 transitions. [2024-10-12 20:17:48,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 20:17:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 175085 states and 282394 transitions. [2024-10-12 20:17:48,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 20:17:48,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:48,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:48,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 20:17:48,809 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:48,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1242414720, now seen corresponding path program 1 times [2024-10-12 20:17:48,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:48,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686935672] [2024-10-12 20:17:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:48,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:50,380 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 20:17:50,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:50,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686935672] [2024-10-12 20:17:50,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686935672] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:50,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:50,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 20:17:50,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988795410] [2024-10-12 20:17:50,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:50,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 20:17:50,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:50,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 20:17:50,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:17:50,384 INFO L87 Difference]: Start difference. First operand 175085 states and 282394 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:17:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:50,954 INFO L93 Difference]: Finished difference Result 178959 states and 288203 transitions. [2024-10-12 20:17:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 20:17:50,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 131 [2024-10-12 20:17:50,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:51,246 INFO L225 Difference]: With dead ends: 178959 [2024-10-12 20:17:51,247 INFO L226 Difference]: Without dead ends: 178957 [2024-10-12 20:17:51,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 20:17:51,312 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 0 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:51,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 20:17:51,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178957 states. [2024-10-12 20:17:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178957 to 178957. [2024-10-12 20:17:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178957 states, 178956 states have (on average 1.5994937303024208) internal successors, (286239), 178956 states have internal predecessors, (286239), 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 20:17:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178957 states to 178957 states and 286239 transitions. [2024-10-12 20:17:54,006 INFO L78 Accepts]: Start accepts. Automaton has 178957 states and 286239 transitions. Word has length 131 [2024-10-12 20:17:54,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:17:54,007 INFO L471 AbstractCegarLoop]: Abstraction has 178957 states and 286239 transitions. [2024-10-12 20:17:54,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:17:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 178957 states and 286239 transitions. [2024-10-12 20:17:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-12 20:17:54,011 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:17:54,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:17:54,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 20:17:54,012 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:17:54,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:17:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1909117538, now seen corresponding path program 1 times [2024-10-12 20:17:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:17:54,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188252428] [2024-10-12 20:17:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:17:54,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:17:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:17:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 20:17:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:17:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188252428] [2024-10-12 20:17:55,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188252428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:17:55,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:17:55,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:17:55,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118039503] [2024-10-12 20:17:55,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:17:55,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:17:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:17:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:17:55,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:17:55,015 INFO L87 Difference]: Start difference. First operand 178957 states and 286239 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 20:17:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:17:57,713 INFO L93 Difference]: Finished difference Result 487719 states and 782944 transitions. [2024-10-12 20:17:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:17:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-10-12 20:17:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:17:58,545 INFO L225 Difference]: With dead ends: 487719 [2024-10-12 20:17:58,545 INFO L226 Difference]: Without dead ends: 409067 [2024-10-12 20:17:58,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:17:58,595 INFO L432 NwaCegarLoop]: 748 mSDtfsCounter, 1423 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 20:17:58,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 2708 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 20:17:58,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409067 states. [2024-10-12 20:18:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409067 to 287505. [2024-10-12 20:18:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287505 states, 287504 states have (on average 1.5981934164394234) internal successors, (459487), 287504 states have internal predecessors, (459487), 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 20:18:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287505 states to 287505 states and 459487 transitions. [2024-10-12 20:18:04,686 INFO L78 Accepts]: Start accepts. Automaton has 287505 states and 459487 transitions. Word has length 162 [2024-10-12 20:18:04,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:04,687 INFO L471 AbstractCegarLoop]: Abstraction has 287505 states and 459487 transitions. [2024-10-12 20:18:04,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 20:18:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 287505 states and 459487 transitions. [2024-10-12 20:18:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-12 20:18:04,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:04,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:04,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 20:18:04,693 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:04,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2094803766, now seen corresponding path program 1 times [2024-10-12 20:18:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248335014] [2024-10-12 20:18:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:04,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 20:18:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 20:18:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-12 20:18:04,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 20:18:04,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248335014] [2024-10-12 20:18:04,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248335014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 20:18:04,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 20:18:04,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 20:18:04,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021563951] [2024-10-12 20:18:04,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 20:18:04,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 20:18:04,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 20:18:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 20:18:04,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 20:18:04,930 INFO L87 Difference]: Start difference. First operand 287505 states and 459487 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 20:18:07,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 20:18:07,291 INFO L93 Difference]: Finished difference Result 518939 states and 833204 transitions. [2024-10-12 20:18:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 20:18:07,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-10-12 20:18:07,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 20:18:08,255 INFO L225 Difference]: With dead ends: 518939 [2024-10-12 20:18:08,255 INFO L226 Difference]: Without dead ends: 440287 [2024-10-12 20:18:08,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-12 20:18:08,429 INFO L432 NwaCegarLoop]: 751 mSDtfsCounter, 1394 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 20:18:08,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 3054 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 20:18:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440287 states. [2024-10-12 20:18:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440287 to 388623. [2024-10-12 20:18:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388623 states, 388622 states have (on average 1.599556895903989) internal successors, (621623), 388622 states have internal predecessors, (621623), 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 20:18:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388623 states to 388623 states and 621623 transitions. [2024-10-12 20:18:15,127 INFO L78 Accepts]: Start accepts. Automaton has 388623 states and 621623 transitions. Word has length 162 [2024-10-12 20:18:15,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 20:18:15,128 INFO L471 AbstractCegarLoop]: Abstraction has 388623 states and 621623 transitions. [2024-10-12 20:18:15,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 20:18:15,128 INFO L276 IsEmpty]: Start isEmpty. Operand 388623 states and 621623 transitions. [2024-10-12 20:18:15,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-12 20:18:15,132 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 20:18:15,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:18:15,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 20:18:15,133 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 20:18:15,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 20:18:15,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1368872698, now seen corresponding path program 1 times [2024-10-12 20:18:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 20:18:15,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692576789] [2024-10-12 20:18:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 20:18:15,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms