./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label16.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 b3ca7ac045e48d38881d30e6a93ef4c7dacfed0b5d9d8607f5d28bf43102d8b7 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 17:20:59,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 17:20:59,923 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 17:20:59,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 17:20:59,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 17:20:59,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 17:20:59,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 17:20:59,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 17:20:59,952 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 17:20:59,953 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 17:20:59,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 17:20:59,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 17:20:59,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 17:20:59,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 17:20:59,956 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 17:20:59,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 17:20:59,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 17:20:59,957 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 17:20:59,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 17:20:59,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 17:20:59,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 17:20:59,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 17:20:59,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 17:20:59,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 17:20:59,961 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 17:20:59,961 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 17:20:59,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 17:20:59,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 17:20:59,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 17:20:59,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 17:20:59,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 17:20:59,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 17:20:59,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 17:20:59,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 17:20:59,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 17:20:59,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 17:20:59,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 17:20:59,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 17:20:59,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 17:20:59,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 17:20:59,963 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 17:20:59,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 17:20:59,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3ca7ac045e48d38881d30e6a93ef4c7dacfed0b5d9d8607f5d28bf43102d8b7 [2024-11-19 17:21:00,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 17:21:00,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 17:21:00,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 17:21:00,168 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 17:21:00,168 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 17:21:00,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label16.c [2024-11-19 17:21:01,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 17:21:01,617 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 17:21:01,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label16.c [2024-11-19 17:21:01,637 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77996b95/cebef73d58b640acac6301fca33f8997/FLAGa2fc45ea6 [2024-11-19 17:21:01,649 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77996b95/cebef73d58b640acac6301fca33f8997 [2024-11-19 17:21:01,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 17:21:01,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 17:21:01,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 17:21:01,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 17:21:01,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 17:21:01,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:01" (1/1) ... [2024-11-19 17:21:01,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240a5d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:01, skipping insertion in model container [2024-11-19 17:21:01,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:01" (1/1) ... [2024-11-19 17:21:01,717 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 17:21:02,114 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label16.c[56490,56503] [2024-11-19 17:21:02,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 17:21:02,157 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 17:21:02,275 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label16.c[56490,56503] [2024-11-19 17:21:02,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 17:21:02,302 INFO L204 MainTranslator]: Completed translation [2024-11-19 17:21:02,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02 WrapperNode [2024-11-19 17:21:02,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 17:21:02,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 17:21:02,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 17:21:02,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 17:21:02,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,416 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2024-11-19 17:21:02,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 17:21:02,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 17:21:02,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 17:21:02,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 17:21:02,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,462 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]. [2024-11-19 17:21:02,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 17:21:02,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 17:21:02,601 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 17:21:02,601 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 17:21:02,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (1/1) ... [2024-11-19 17:21:02,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 17:21:02,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:02,630 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) [2024-11-19 17:21:02,632 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 [2024-11-19 17:21:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 17:21:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 17:21:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 17:21:02,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 17:21:02,741 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 17:21:02,742 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 17:21:03,974 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-19 17:21:03,975 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 17:21:03,995 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 17:21:03,996 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 17:21:03,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:03 BoogieIcfgContainer [2024-11-19 17:21:03,997 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 17:21:03,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 17:21:03,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 17:21:04,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 17:21:04,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:01" (1/3) ... [2024-11-19 17:21:04,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116fdf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:04, skipping insertion in model container [2024-11-19 17:21:04,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:02" (2/3) ... [2024-11-19 17:21:04,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116fdf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:04, skipping insertion in model container [2024-11-19 17:21:04,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:03" (3/3) ... [2024-11-19 17:21:04,004 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label16.c [2024-11-19 17:21:04,016 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 17:21:04,017 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 17:21:04,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 17:21:04,083 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;@de52cbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 17:21:04,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 17:21:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-19 17:21:04,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:04,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:04,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:04,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:04,107 INFO L85 PathProgramCache]: Analyzing trace with hash 812227147, now seen corresponding path program 1 times [2024-11-19 17:21:04,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:04,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556319411] [2024-11-19 17:21:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:04,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:21:04,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:04,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556319411] [2024-11-19 17:21:04,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556319411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:04,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:04,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:21:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96946598] [2024-11-19 17:21:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:04,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:04,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:04,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:04,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:04,764 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:05,605 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2024-11-19 17:21:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:05,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2024-11-19 17:21:05,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:05,617 INFO L225 Difference]: With dead ends: 857 [2024-11-19 17:21:05,618 INFO L226 Difference]: Without dead ends: 462 [2024-11-19 17:21:05,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:05,623 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 123 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:05,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 187 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 17:21:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-19 17:21:05,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-11-19 17:21:05,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2024-11-19 17:21:05,687 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 165 [2024-11-19 17:21:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:05,687 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2024-11-19 17:21:05,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2024-11-19 17:21:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-19 17:21:05,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:05,691 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:05,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 17:21:05,691 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:05,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:05,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1291791372, now seen corresponding path program 1 times [2024-11-19 17:21:05,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:05,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493864279] [2024-11-19 17:21:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:05,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:21:05,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:05,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493864279] [2024-11-19 17:21:05,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493864279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:05,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:05,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:21:05,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043591433] [2024-11-19 17:21:05,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:05,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:05,868 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:06,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:06,483 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2024-11-19 17:21:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:06,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-11-19 17:21:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:06,487 INFO L225 Difference]: With dead ends: 1344 [2024-11-19 17:21:06,487 INFO L226 Difference]: Without dead ends: 886 [2024-11-19 17:21:06,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:06,491 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:06,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-19 17:21:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2024-11-19 17:21:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5132336018411967) internal successors, (1315), 869 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1315 transitions. [2024-11-19 17:21:06,515 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1315 transitions. Word has length 173 [2024-11-19 17:21:06,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:06,515 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1315 transitions. [2024-11-19 17:21:06,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1315 transitions. [2024-11-19 17:21:06,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-19 17:21:06,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:06,519 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:06,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 17:21:06,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:06,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash -479908031, now seen corresponding path program 1 times [2024-11-19 17:21:06,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:06,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308079321] [2024-11-19 17:21:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:06,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 17:21:06,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308079321] [2024-11-19 17:21:06,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308079321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:06,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:06,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 17:21:06,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409241680] [2024-11-19 17:21:06,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:06,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:06,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:06,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:06,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:06,699 INFO L87 Difference]: Start difference. First operand 870 states and 1315 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:07,332 INFO L93 Difference]: Finished difference Result 2558 states and 3877 transitions. [2024-11-19 17:21:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:07,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-11-19 17:21:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:07,337 INFO L225 Difference]: With dead ends: 2558 [2024-11-19 17:21:07,337 INFO L226 Difference]: Without dead ends: 1690 [2024-11-19 17:21:07,338 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 [2024-11-19 17:21:07,339 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 103 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:07,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 401 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2024-11-19 17:21:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1689. [2024-11-19 17:21:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1688 states have (on average 1.4099526066350712) internal successors, (2380), 1688 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2380 transitions. [2024-11-19 17:21:07,364 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2380 transitions. Word has length 180 [2024-11-19 17:21:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:07,368 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2380 transitions. [2024-11-19 17:21:07,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2380 transitions. [2024-11-19 17:21:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-19 17:21:07,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:07,371 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:07,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 17:21:07,372 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:07,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash -265270091, now seen corresponding path program 1 times [2024-11-19 17:21:07,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:07,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933058242] [2024-11-19 17:21:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 17:21:07,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:07,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933058242] [2024-11-19 17:21:07,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933058242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:07,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:07,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 17:21:07,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664979942] [2024-11-19 17:21:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:07,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:07,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:07,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:07,663 INFO L87 Difference]: Start difference. First operand 1689 states and 2380 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:08,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:08,333 INFO L93 Difference]: Finished difference Result 5013 states and 7074 transitions. [2024-11-19 17:21:08,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:08,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 186 [2024-11-19 17:21:08,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:08,341 INFO L225 Difference]: With dead ends: 5013 [2024-11-19 17:21:08,341 INFO L226 Difference]: Without dead ends: 3326 [2024-11-19 17:21:08,343 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 [2024-11-19 17:21:08,344 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:08,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 422 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:08,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2024-11-19 17:21:08,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3321. [2024-11-19 17:21:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.319879518072289) internal successors, (4382), 3320 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:08,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4382 transitions. [2024-11-19 17:21:08,387 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4382 transitions. Word has length 186 [2024-11-19 17:21:08,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:08,387 INFO L471 AbstractCegarLoop]: Abstraction has 3321 states and 4382 transitions. [2024-11-19 17:21:08,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:08,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4382 transitions. [2024-11-19 17:21:08,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-19 17:21:08,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:08,391 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:08,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 17:21:08,392 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:08,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash -555829536, now seen corresponding path program 1 times [2024-11-19 17:21:08,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:08,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527124619] [2024-11-19 17:21:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:08,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:21:08,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:08,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527124619] [2024-11-19 17:21:08,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527124619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:08,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:08,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:21:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760319864] [2024-11-19 17:21:08,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:08,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:08,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:08,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:08,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:08,606 INFO L87 Difference]: Start difference. First operand 3321 states and 4382 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:09,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:09,215 INFO L93 Difference]: Finished difference Result 8287 states and 11098 transitions. [2024-11-19 17:21:09,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:09,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2024-11-19 17:21:09,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:09,229 INFO L225 Difference]: With dead ends: 8287 [2024-11-19 17:21:09,230 INFO L226 Difference]: Without dead ends: 4968 [2024-11-19 17:21:09,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:09,235 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:09,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 201 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:09,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4968 states. [2024-11-19 17:21:09,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4968 to 4948. [2024-11-19 17:21:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4947 states have (on average 1.3402061855670102) internal successors, (6630), 4947 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 6630 transitions. [2024-11-19 17:21:09,305 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 6630 transitions. Word has length 191 [2024-11-19 17:21:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:09,305 INFO L471 AbstractCegarLoop]: Abstraction has 4948 states and 6630 transitions. [2024-11-19 17:21:09,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 6630 transitions. [2024-11-19 17:21:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-19 17:21:09,311 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:09,311 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:09,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 17:21:09,312 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:09,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash 715312805, now seen corresponding path program 1 times [2024-11-19 17:21:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967300077] [2024-11-19 17:21:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:09,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:21:09,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:09,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967300077] [2024-11-19 17:21:09,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967300077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:09,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:09,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:21:09,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988686796] [2024-11-19 17:21:09,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:09,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:09,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:09,504 INFO L87 Difference]: Start difference. First operand 4948 states and 6630 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:10,146 INFO L93 Difference]: Finished difference Result 12372 states and 16544 transitions. [2024-11-19 17:21:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:10,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2024-11-19 17:21:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:10,166 INFO L225 Difference]: With dead ends: 12372 [2024-11-19 17:21:10,167 INFO L226 Difference]: Without dead ends: 7426 [2024-11-19 17:21:10,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:10,173 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 221 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:10,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 144 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2024-11-19 17:21:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 7420. [2024-11-19 17:21:10,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7420 states, 7419 states have (on average 1.332524599002561) internal successors, (9886), 7419 states have internal predecessors, (9886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 9886 transitions. [2024-11-19 17:21:10,279 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 9886 transitions. Word has length 193 [2024-11-19 17:21:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:10,280 INFO L471 AbstractCegarLoop]: Abstraction has 7420 states and 9886 transitions. [2024-11-19 17:21:10,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 9886 transitions. [2024-11-19 17:21:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-19 17:21:10,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:10,290 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:10,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 17:21:10,290 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:10,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash 654029180, now seen corresponding path program 1 times [2024-11-19 17:21:10,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:10,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387446391] [2024-11-19 17:21:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 17:21:10,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:10,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387446391] [2024-11-19 17:21:10,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387446391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:10,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:10,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:21:10,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108256574] [2024-11-19 17:21:10,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:10,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:10,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:10,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:10,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:10,427 INFO L87 Difference]: Start difference. First operand 7420 states and 9886 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:11,044 INFO L93 Difference]: Finished difference Result 14840 states and 19774 transitions. [2024-11-19 17:21:11,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:11,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 194 [2024-11-19 17:21:11,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:11,069 INFO L225 Difference]: With dead ends: 14840 [2024-11-19 17:21:11,069 INFO L226 Difference]: Without dead ends: 7422 [2024-11-19 17:21:11,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:11,080 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 241 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:11,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 137 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:11,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7422 states. [2024-11-19 17:21:11,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7422 to 7420. [2024-11-19 17:21:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7420 states, 7419 states have (on average 1.2724086804151502) internal successors, (9440), 7419 states have internal predecessors, (9440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 9440 transitions. [2024-11-19 17:21:11,169 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 9440 transitions. Word has length 194 [2024-11-19 17:21:11,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:11,170 INFO L471 AbstractCegarLoop]: Abstraction has 7420 states and 9440 transitions. [2024-11-19 17:21:11,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 9440 transitions. [2024-11-19 17:21:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-19 17:21:11,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:11,178 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:11,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 17:21:11,179 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:11,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:11,179 INFO L85 PathProgramCache]: Analyzing trace with hash -124508838, now seen corresponding path program 1 times [2024-11-19 17:21:11,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:11,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062527327] [2024-11-19 17:21:11,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:11,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 17:21:11,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:11,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062527327] [2024-11-19 17:21:11,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062527327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:21:11,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513327816] [2024-11-19 17:21:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:11,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:11,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:11,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:21:11,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 17:21:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:11,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:21:11,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:21:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-19 17:21:11,835 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:21:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513327816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:11,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:21:11,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-19 17:21:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463738826] [2024-11-19 17:21:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:11,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:11,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:11,837 INFO L87 Difference]: Start difference. First operand 7420 states and 9440 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:12,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:12,487 INFO L93 Difference]: Finished difference Result 19756 states and 25346 transitions. [2024-11-19 17:21:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:12,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 200 [2024-11-19 17:21:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:12,505 INFO L225 Difference]: With dead ends: 19756 [2024-11-19 17:21:12,505 INFO L226 Difference]: Without dead ends: 12338 [2024-11-19 17:21:12,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:12,516 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:12,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 172 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12338 states. [2024-11-19 17:21:12,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12338 to 12321. [2024-11-19 17:21:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12321 states, 12320 states have (on average 1.2556006493506493) internal successors, (15469), 12320 states have internal predecessors, (15469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12321 states to 12321 states and 15469 transitions. [2024-11-19 17:21:12,696 INFO L78 Accepts]: Start accepts. Automaton has 12321 states and 15469 transitions. Word has length 200 [2024-11-19 17:21:12,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:12,696 INFO L471 AbstractCegarLoop]: Abstraction has 12321 states and 15469 transitions. [2024-11-19 17:21:12,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 12321 states and 15469 transitions. [2024-11-19 17:21:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-19 17:21:12,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:12,710 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:12,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 17:21:12,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:12,911 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:12,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:12,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1980773880, now seen corresponding path program 1 times [2024-11-19 17:21:12,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:12,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527125648] [2024-11-19 17:21:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:12,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-19 17:21:13,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527125648] [2024-11-19 17:21:13,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527125648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:13,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:13,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 17:21:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176913676] [2024-11-19 17:21:13,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:13,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:13,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:13,134 INFO L87 Difference]: Start difference. First operand 12321 states and 15469 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:13,792 INFO L93 Difference]: Finished difference Result 28318 states and 35573 transitions. [2024-11-19 17:21:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:13,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 223 [2024-11-19 17:21:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:13,813 INFO L225 Difference]: With dead ends: 28318 [2024-11-19 17:21:13,813 INFO L226 Difference]: Without dead ends: 15999 [2024-11-19 17:21:13,825 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 [2024-11-19 17:21:13,826 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:13,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 399 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15999 states. [2024-11-19 17:21:13,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15999 to 15974. [2024-11-19 17:21:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15974 states, 15973 states have (on average 1.2312652601264633) internal successors, (19667), 15973 states have internal predecessors, (19667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:14,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15974 states to 15974 states and 19667 transitions. [2024-11-19 17:21:14,010 INFO L78 Accepts]: Start accepts. Automaton has 15974 states and 19667 transitions. Word has length 223 [2024-11-19 17:21:14,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:14,010 INFO L471 AbstractCegarLoop]: Abstraction has 15974 states and 19667 transitions. [2024-11-19 17:21:14,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:14,010 INFO L276 IsEmpty]: Start isEmpty. Operand 15974 states and 19667 transitions. [2024-11-19 17:21:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-19 17:21:14,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:14,024 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:14,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 17:21:14,025 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:14,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -902741125, now seen corresponding path program 1 times [2024-11-19 17:21:14,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:14,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520264689] [2024-11-19 17:21:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 17:21:14,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:14,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520264689] [2024-11-19 17:21:14,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520264689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:14,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:14,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:21:14,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662437563] [2024-11-19 17:21:14,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:14,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:14,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:14,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:14,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:14,246 INFO L87 Difference]: Start difference. First operand 15974 states and 19667 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:15,015 INFO L93 Difference]: Finished difference Result 42538 states and 52245 transitions. [2024-11-19 17:21:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:15,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2024-11-19 17:21:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:15,053 INFO L225 Difference]: With dead ends: 42538 [2024-11-19 17:21:15,054 INFO L226 Difference]: Without dead ends: 26566 [2024-11-19 17:21:15,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:15,066 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 202 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:15,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 154 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:15,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26566 states. [2024-11-19 17:21:15,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26566 to 26564. [2024-11-19 17:21:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26564 states, 26563 states have (on average 1.2063396453713813) internal successors, (32044), 26563 states have internal predecessors, (32044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26564 states to 26564 states and 32044 transitions. [2024-11-19 17:21:15,400 INFO L78 Accepts]: Start accepts. Automaton has 26564 states and 32044 transitions. Word has length 236 [2024-11-19 17:21:15,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:15,400 INFO L471 AbstractCegarLoop]: Abstraction has 26564 states and 32044 transitions. [2024-11-19 17:21:15,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 26564 states and 32044 transitions. [2024-11-19 17:21:15,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-19 17:21:15,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:15,421 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:15,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 17:21:15,421 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:15,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1277996454, now seen corresponding path program 1 times [2024-11-19 17:21:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:15,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187285088] [2024-11-19 17:21:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:15,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 17:21:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:15,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187285088] [2024-11-19 17:21:15,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187285088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:21:15,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729597285] [2024-11-19 17:21:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:15,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:15,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:15,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:21:15,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 17:21:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:15,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:21:15,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:21:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-19 17:21:16,123 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:21:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729597285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:16,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:21:16,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-19 17:21:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806697896] [2024-11-19 17:21:16,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:16,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:16,125 INFO L87 Difference]: Start difference. First operand 26564 states and 32044 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:16,807 INFO L93 Difference]: Finished difference Result 70174 states and 84487 transitions. [2024-11-19 17:21:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 243 [2024-11-19 17:21:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:16,853 INFO L225 Difference]: With dead ends: 70174 [2024-11-19 17:21:16,854 INFO L226 Difference]: Without dead ends: 43612 [2024-11-19 17:21:16,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:16,874 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 97 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:16,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 136 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 17:21:16,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43612 states. [2024-11-19 17:21:17,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43612 to 39141. [2024-11-19 17:21:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39141 states, 39140 states have (on average 1.20539090444558) internal successors, (47179), 39140 states have internal predecessors, (47179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39141 states to 39141 states and 47179 transitions. [2024-11-19 17:21:17,233 INFO L78 Accepts]: Start accepts. Automaton has 39141 states and 47179 transitions. Word has length 243 [2024-11-19 17:21:17,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:17,234 INFO L471 AbstractCegarLoop]: Abstraction has 39141 states and 47179 transitions. [2024-11-19 17:21:17,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 39141 states and 47179 transitions. [2024-11-19 17:21:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-19 17:21:17,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:17,341 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:17,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 17:21:17,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 17:21:17,542 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:17,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:17,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1685100686, now seen corresponding path program 1 times [2024-11-19 17:21:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:17,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580915417] [2024-11-19 17:21:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:17,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-19 17:21:17,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580915417] [2024-11-19 17:21:17,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580915417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:21:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410097522] [2024-11-19 17:21:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:17,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:17,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:17,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:21:17,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 17:21:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:18,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:21:18,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:21:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-19 17:21:18,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:21:18,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410097522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:18,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:21:18,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-19 17:21:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675495715] [2024-11-19 17:21:18,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:18,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:18,255 INFO L87 Difference]: Start difference. First operand 39141 states and 47179 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:18,968 INFO L93 Difference]: Finished difference Result 73017 states and 87870 transitions. [2024-11-19 17:21:18,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:18,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 246 [2024-11-19 17:21:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:19,008 INFO L225 Difference]: With dead ends: 73017 [2024-11-19 17:21:19,009 INFO L226 Difference]: Without dead ends: 33878 [2024-11-19 17:21:19,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:19,038 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 72 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:19,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 377 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 17:21:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33878 states. [2024-11-19 17:21:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33878 to 33860. [2024-11-19 17:21:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33860 states, 33859 states have (on average 1.194305797572285) internal successors, (40438), 33859 states have internal predecessors, (40438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:19,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33860 states to 33860 states and 40438 transitions. [2024-11-19 17:21:19,571 INFO L78 Accepts]: Start accepts. Automaton has 33860 states and 40438 transitions. Word has length 246 [2024-11-19 17:21:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:19,572 INFO L471 AbstractCegarLoop]: Abstraction has 33860 states and 40438 transitions. [2024-11-19 17:21:19,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 33860 states and 40438 transitions. [2024-11-19 17:21:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-19 17:21:19,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:19,715 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:19,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 17:21:19,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:19,919 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:19,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:19,919 INFO L85 PathProgramCache]: Analyzing trace with hash -506352805, now seen corresponding path program 1 times [2024-11-19 17:21:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:19,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586234279] [2024-11-19 17:21:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 129 proven. 6 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-19 17:21:20,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:20,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586234279] [2024-11-19 17:21:20,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586234279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:21:20,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606855543] [2024-11-19 17:21:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:20,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:20,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:20,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:21:20,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 17:21:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:20,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 17:21:20,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:21:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-19 17:21:20,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:21:20,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606855543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:20,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:21:20,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-19 17:21:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268398847] [2024-11-19 17:21:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:20,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:20,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:20,475 INFO L87 Difference]: Start difference. First operand 33860 states and 40438 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:20,915 INFO L93 Difference]: Finished difference Result 65435 states and 78050 transitions. [2024-11-19 17:21:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:20,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 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 280 [2024-11-19 17:21:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:20,946 INFO L225 Difference]: With dead ends: 65435 [2024-11-19 17:21:20,947 INFO L226 Difference]: Without dead ends: 31577 [2024-11-19 17:21:20,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:20,964 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:20,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 17:21:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31577 states. [2024-11-19 17:21:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31577 to 24878. [2024-11-19 17:21:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24878 states, 24877 states have (on average 1.1820155163403947) internal successors, (29405), 24877 states have internal predecessors, (29405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24878 states to 24878 states and 29405 transitions. [2024-11-19 17:21:21,360 INFO L78 Accepts]: Start accepts. Automaton has 24878 states and 29405 transitions. Word has length 280 [2024-11-19 17:21:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:21,360 INFO L471 AbstractCegarLoop]: Abstraction has 24878 states and 29405 transitions. [2024-11-19 17:21:21,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 24878 states and 29405 transitions. [2024-11-19 17:21:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-19 17:21:21,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:21,378 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:21,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 17:21:21,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:21,579 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:21,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1801356670, now seen corresponding path program 1 times [2024-11-19 17:21:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:21,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006592387] [2024-11-19 17:21:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 17:21:21,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006592387] [2024-11-19 17:21:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006592387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:21,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:21:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331438514] [2024-11-19 17:21:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:21,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:21,907 INFO L87 Difference]: Start difference. First operand 24878 states and 29405 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:22,520 INFO L93 Difference]: Finished difference Result 66082 states and 77895 transitions. [2024-11-19 17:21:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:22,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 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 310 [2024-11-19 17:21:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:22,562 INFO L225 Difference]: With dead ends: 66082 [2024-11-19 17:21:22,562 INFO L226 Difference]: Without dead ends: 41206 [2024-11-19 17:21:22,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:22,584 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 120 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:22,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 117 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 17:21:22,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41206 states. [2024-11-19 17:21:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41206 to 41204. [2024-11-19 17:21:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41204 states, 41203 states have (on average 1.17508433851904) internal successors, (48417), 41203 states have internal predecessors, (48417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41204 states to 41204 states and 48417 transitions. [2024-11-19 17:21:22,988 INFO L78 Accepts]: Start accepts. Automaton has 41204 states and 48417 transitions. Word has length 310 [2024-11-19 17:21:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:22,988 INFO L471 AbstractCegarLoop]: Abstraction has 41204 states and 48417 transitions. [2024-11-19 17:21:22,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 41204 states and 48417 transitions. [2024-11-19 17:21:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-19 17:21:23,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:23,014 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:23,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 17:21:23,014 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:23,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1670290921, now seen corresponding path program 1 times [2024-11-19 17:21:23,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:23,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022059702] [2024-11-19 17:21:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:23,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 17:21:23,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:23,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022059702] [2024-11-19 17:21:23,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022059702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:23,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:23,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 17:21:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651208151] [2024-11-19 17:21:23,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:23,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 17:21:23,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:23,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 17:21:23,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 17:21:23,360 INFO L87 Difference]: Start difference. First operand 41204 states and 48417 transitions. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:24,245 INFO L93 Difference]: Finished difference Result 104254 states and 122643 transitions. [2024-11-19 17:21:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 17:21:24,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2024-11-19 17:21:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:24,317 INFO L225 Difference]: With dead ends: 104254 [2024-11-19 17:21:24,317 INFO L226 Difference]: Without dead ends: 63052 [2024-11-19 17:21:24,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 17:21:24,354 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 592 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:24,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 326 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 17:21:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63052 states. [2024-11-19 17:21:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63052 to 60967. [2024-11-19 17:21:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60967 states, 60966 states have (on average 1.1738017911622871) internal successors, (71562), 60966 states have internal predecessors, (71562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60967 states to 60967 states and 71562 transitions. [2024-11-19 17:21:25,149 INFO L78 Accepts]: Start accepts. Automaton has 60967 states and 71562 transitions. Word has length 317 [2024-11-19 17:21:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:25,150 INFO L471 AbstractCegarLoop]: Abstraction has 60967 states and 71562 transitions. [2024-11-19 17:21:25,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 60967 states and 71562 transitions. [2024-11-19 17:21:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-19 17:21:25,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:25,183 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:25,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 17:21:25,184 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:25,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:25,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1033114965, now seen corresponding path program 1 times [2024-11-19 17:21:25,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:25,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360332620] [2024-11-19 17:21:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:25,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-19 17:21:25,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360332620] [2024-11-19 17:21:25,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360332620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:25,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:25,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:21:25,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052117964] [2024-11-19 17:21:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:25,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:25,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:25,369 INFO L87 Difference]: Start difference. First operand 60967 states and 71562 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:26,183 INFO L93 Difference]: Finished difference Result 142841 states and 167962 transitions. [2024-11-19 17:21:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:26,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 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 329 [2024-11-19 17:21:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:26,265 INFO L225 Difference]: With dead ends: 142841 [2024-11-19 17:21:26,265 INFO L226 Difference]: Without dead ends: 81876 [2024-11-19 17:21:26,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:26,312 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 197 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:26,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 151 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 17:21:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81876 states. [2024-11-19 17:21:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81876 to 81064. [2024-11-19 17:21:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81064 states, 81063 states have (on average 1.1392620554383628) internal successors, (92352), 81063 states have internal predecessors, (92352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81064 states to 81064 states and 92352 transitions. [2024-11-19 17:21:27,459 INFO L78 Accepts]: Start accepts. Automaton has 81064 states and 92352 transitions. Word has length 329 [2024-11-19 17:21:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:27,459 INFO L471 AbstractCegarLoop]: Abstraction has 81064 states and 92352 transitions. [2024-11-19 17:21:27,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 81064 states and 92352 transitions. [2024-11-19 17:21:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-19 17:21:27,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:27,506 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:27,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 17:21:27,506 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:27,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash 637168186, now seen corresponding path program 1 times [2024-11-19 17:21:27,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:27,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772815420] [2024-11-19 17:21:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 127 proven. 6 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-19 17:21:28,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:28,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772815420] [2024-11-19 17:21:28,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772815420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:21:28,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066764966] [2024-11-19 17:21:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:28,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:28,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:28,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:21:28,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 17:21:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:28,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:21:28,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:21:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-19 17:21:28,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:21:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066764966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:28,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:21:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-19 17:21:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70386945] [2024-11-19 17:21:28,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:28,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:28,314 INFO L87 Difference]: Start difference. First operand 81064 states and 92352 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:29,097 INFO L93 Difference]: Finished difference Result 173656 states and 197887 transitions. [2024-11-19 17:21:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:29,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 364 [2024-11-19 17:21:29,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:29,185 INFO L225 Difference]: With dead ends: 173656 [2024-11-19 17:21:29,185 INFO L226 Difference]: Without dead ends: 87722 [2024-11-19 17:21:29,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:29,237 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 200 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:29,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 364 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 17:21:29,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87722 states. [2024-11-19 17:21:30,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87722 to 77557. [2024-11-19 17:21:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77557 states, 77556 states have (on average 1.0788075713033163) internal successors, (83668), 77556 states have internal predecessors, (83668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77557 states to 77557 states and 83668 transitions. [2024-11-19 17:21:30,427 INFO L78 Accepts]: Start accepts. Automaton has 77557 states and 83668 transitions. Word has length 364 [2024-11-19 17:21:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:30,427 INFO L471 AbstractCegarLoop]: Abstraction has 77557 states and 83668 transitions. [2024-11-19 17:21:30,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:30,427 INFO L276 IsEmpty]: Start isEmpty. Operand 77557 states and 83668 transitions. [2024-11-19 17:21:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-19 17:21:30,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:30,457 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:30,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 17:21:30,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 17:21:30,658 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:30,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:30,659 INFO L85 PathProgramCache]: Analyzing trace with hash 525764682, now seen corresponding path program 1 times [2024-11-19 17:21:30,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:30,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826149342] [2024-11-19 17:21:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:30,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 17:21:31,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:31,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826149342] [2024-11-19 17:21:31,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826149342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:31,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:31,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 17:21:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856141174] [2024-11-19 17:21:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:31,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:31,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:31,009 INFO L87 Difference]: Start difference. First operand 77557 states and 83668 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:31,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:31,678 INFO L93 Difference]: Finished difference Result 151664 states and 163758 transitions. [2024-11-19 17:21:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:31,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 384 [2024-11-19 17:21:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:31,754 INFO L225 Difference]: With dead ends: 151664 [2024-11-19 17:21:31,754 INFO L226 Difference]: Without dead ends: 73297 [2024-11-19 17:21:31,800 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 [2024-11-19 17:21:31,800 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 126 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:31,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 292 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 17:21:31,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73297 states. [2024-11-19 17:21:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73297 to 66788. [2024-11-19 17:21:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66788 states, 66787 states have (on average 1.0671837333612828) internal successors, (71274), 66787 states have internal predecessors, (71274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66788 states to 66788 states and 71274 transitions. [2024-11-19 17:21:32,823 INFO L78 Accepts]: Start accepts. Automaton has 66788 states and 71274 transitions. Word has length 384 [2024-11-19 17:21:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:32,824 INFO L471 AbstractCegarLoop]: Abstraction has 66788 states and 71274 transitions. [2024-11-19 17:21:32,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:32,824 INFO L276 IsEmpty]: Start isEmpty. Operand 66788 states and 71274 transitions. [2024-11-19 17:21:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2024-11-19 17:21:32,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:32,890 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:32,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 17:21:32,890 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:32,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash -209290712, now seen corresponding path program 1 times [2024-11-19 17:21:32,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:32,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170758322] [2024-11-19 17:21:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:32,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-19 17:21:33,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170758322] [2024-11-19 17:21:33,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170758322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:33,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 17:21:33,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 17:21:33,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516926310] [2024-11-19 17:21:33,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:33,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:33,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:33,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:33,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:33,748 INFO L87 Difference]: Start difference. First operand 66788 states and 71274 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:34,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:34,515 INFO L93 Difference]: Finished difference Result 136849 states and 146093 transitions. [2024-11-19 17:21:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:34,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 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 678 [2024-11-19 17:21:34,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:34,577 INFO L225 Difference]: With dead ends: 136849 [2024-11-19 17:21:34,577 INFO L226 Difference]: Without dead ends: 69251 [2024-11-19 17:21:34,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 17:21:34,590 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 89 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:34,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 117 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 17:21:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69251 states. [2024-11-19 17:21:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69251 to 68000. [2024-11-19 17:21:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68000 states, 67999 states have (on average 1.0547949234547567) internal successors, (71725), 67999 states have internal predecessors, (71725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68000 states to 68000 states and 71725 transitions. [2024-11-19 17:21:35,330 INFO L78 Accepts]: Start accepts. Automaton has 68000 states and 71725 transitions. Word has length 678 [2024-11-19 17:21:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:35,330 INFO L471 AbstractCegarLoop]: Abstraction has 68000 states and 71725 transitions. [2024-11-19 17:21:35,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:35,330 INFO L276 IsEmpty]: Start isEmpty. Operand 68000 states and 71725 transitions. [2024-11-19 17:21:35,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2024-11-19 17:21:35,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:35,376 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:35,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 17:21:35,376 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:35,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:35,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1172158611, now seen corresponding path program 1 times [2024-11-19 17:21:35,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:35,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357256119] [2024-11-19 17:21:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:35,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 547 proven. 6 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-19 17:21:36,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:36,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357256119] [2024-11-19 17:21:36,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357256119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:21:36,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887328190] [2024-11-19 17:21:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:36,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:36,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:36,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:21:36,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 17:21:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:36,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:21:36,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:21:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 1035 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-19 17:21:36,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:21:36,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887328190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:36,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:21:36,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-19 17:21:36,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57754794] [2024-11-19 17:21:36,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:36,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:36,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:36,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:36,981 INFO L87 Difference]: Start difference. First operand 68000 states and 71725 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:37,607 INFO L93 Difference]: Finished difference Result 136004 states and 143458 transitions. [2024-11-19 17:21:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:37,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 685 [2024-11-19 17:21:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:37,677 INFO L225 Difference]: With dead ends: 136004 [2024-11-19 17:21:37,677 INFO L226 Difference]: Without dead ends: 68006 [2024-11-19 17:21:37,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:37,719 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 147 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:37,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 276 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 17:21:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68006 states. [2024-11-19 17:21:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68006 to 68000. [2024-11-19 17:21:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68000 states, 67999 states have (on average 1.052883130634274) internal successors, (71595), 67999 states have internal predecessors, (71595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68000 states to 68000 states and 71595 transitions. [2024-11-19 17:21:38,513 INFO L78 Accepts]: Start accepts. Automaton has 68000 states and 71595 transitions. Word has length 685 [2024-11-19 17:21:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:38,513 INFO L471 AbstractCegarLoop]: Abstraction has 68000 states and 71595 transitions. [2024-11-19 17:21:38,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 68000 states and 71595 transitions. [2024-11-19 17:21:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2024-11-19 17:21:38,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:38,823 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 17:21:38,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 17:21:39,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:39,024 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:39,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash 876249182, now seen corresponding path program 1 times [2024-11-19 17:21:39,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:39,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027378415] [2024-11-19 17:21:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:39,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 639 proven. 6 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2024-11-19 17:21:40,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:40,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027378415] [2024-11-19 17:21:40,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027378415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:21:40,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504148889] [2024-11-19 17:21:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:40,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:40,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:40,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:21:40,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 17:21:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:40,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:21:40,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:21:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 1440 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-19 17:21:40,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:21:40,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504148889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:40,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:21:40,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-19 17:21:40,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912898809] [2024-11-19 17:21:40,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:40,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:40,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:40,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:40,702 INFO L87 Difference]: Start difference. First operand 68000 states and 71595 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:41,142 INFO L93 Difference]: Finished difference Result 169154 states and 178248 transitions. [2024-11-19 17:21:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:41,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 763 [2024-11-19 17:21:41,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:41,254 INFO L225 Difference]: With dead ends: 169154 [2024-11-19 17:21:41,254 INFO L226 Difference]: Without dead ends: 101156 [2024-11-19 17:21:41,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:41,306 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 160 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:41,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 767 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:21:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101156 states. [2024-11-19 17:21:42,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101156 to 99936. [2024-11-19 17:21:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99936 states, 99935 states have (on average 1.0501826187021563) internal successors, (104950), 99935 states have internal predecessors, (104950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99936 states to 99936 states and 104950 transitions. [2024-11-19 17:21:42,526 INFO L78 Accepts]: Start accepts. Automaton has 99936 states and 104950 transitions. Word has length 763 [2024-11-19 17:21:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:42,527 INFO L471 AbstractCegarLoop]: Abstraction has 99936 states and 104950 transitions. [2024-11-19 17:21:42,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 99936 states and 104950 transitions. [2024-11-19 17:21:42,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2024-11-19 17:21:42,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:42,594 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 17:21:42,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 17:21:42,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:42,795 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:42,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:42,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1567285656, now seen corresponding path program 1 times [2024-11-19 17:21:42,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:42,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614799399] [2024-11-19 17:21:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:42,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 644 proven. 6 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-11-19 17:21:44,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614799399] [2024-11-19 17:21:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614799399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:21:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103163023] [2024-11-19 17:21:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:44,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:44,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:44,235 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:21:44,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 17:21:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:44,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 17:21:44,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:21:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 1307 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2024-11-19 17:21:44,611 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:21:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103163023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:44,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:21:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-19 17:21:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077759787] [2024-11-19 17:21:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:44,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:44,613 INFO L87 Difference]: Start difference. First operand 99936 states and 104950 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:45,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:45,221 INFO L93 Difference]: Finished difference Result 236922 states and 249109 transitions. [2024-11-19 17:21:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:45,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 770 [2024-11-19 17:21:45,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:45,369 INFO L225 Difference]: With dead ends: 236922 [2024-11-19 17:21:45,369 INFO L226 Difference]: Without dead ends: 134755 [2024-11-19 17:21:45,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:45,444 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 136 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:45,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 699 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 17:21:45,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134755 states. [2024-11-19 17:21:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134755 to 131710. [2024-11-19 17:21:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131710 states, 131709 states have (on average 1.0473543949160649) internal successors, (137946), 131709 states have internal predecessors, (137946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:47,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131710 states to 131710 states and 137946 transitions. [2024-11-19 17:21:47,378 INFO L78 Accepts]: Start accepts. Automaton has 131710 states and 137946 transitions. Word has length 770 [2024-11-19 17:21:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 17:21:47,379 INFO L471 AbstractCegarLoop]: Abstraction has 131710 states and 137946 transitions. [2024-11-19 17:21:47,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 131710 states and 137946 transitions. [2024-11-19 17:21:47,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2024-11-19 17:21:47,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 17:21:47,486 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 17:21:47,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 17:21:47,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-19 17:21:47,687 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 17:21:47,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 17:21:47,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1390063032, now seen corresponding path program 1 times [2024-11-19 17:21:47,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 17:21:47,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928074167] [2024-11-19 17:21:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:47,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 17:21:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 783 proven. 6 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-19 17:21:49,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 17:21:49,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928074167] [2024-11-19 17:21:49,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928074167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 17:21:49,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112555135] [2024-11-19 17:21:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 17:21:49,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 17:21:49,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 17:21:49,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 17:21:49,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 17:21:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 17:21:49,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 17:21:49,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 17:21:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1906 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-11-19 17:21:49,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 17:21:49,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112555135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 17:21:49,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 17:21:49,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-19 17:21:49,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284265751] [2024-11-19 17:21:49,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 17:21:49,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 17:21:49,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 17:21:49,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 17:21:49,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:49,873 INFO L87 Difference]: Start difference. First operand 131710 states and 137946 transitions. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 17:21:50,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 17:21:50,811 INFO L93 Difference]: Finished difference Result 350435 states and 366932 transitions. [2024-11-19 17:21:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 17:21:50,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 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 903 [2024-11-19 17:21:50,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 17:21:51,067 INFO L225 Difference]: With dead ends: 350435 [2024-11-19 17:21:51,067 INFO L226 Difference]: Without dead ends: 215479 [2024-11-19 17:21:51,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 17:21:51,134 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 165 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 17:21:51,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 744 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 17:21:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215479 states.