./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/Problem16_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label33.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 699c9c8063acd4bd53cef44ad5ead9f63bc9d124723ec1a4a717150e95ac10f2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:24:02,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:24:02,822 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:24:02,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:24:02,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:24:02,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:24:02,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:24:02,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:24:02,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:24:02,865 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:24:02,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:24:02,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:24:02,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:24:02,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:24:02,869 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:24:02,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:24:02,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:24:02,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:24:02,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:24:02,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:24:02,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:24:02,875 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:24:02,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:24:02,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:24:02,876 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:24:02,877 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:24:02,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:24:02,877 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:24:02,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:24:02,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:24:02,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:24:02,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:24:02,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:24:02,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:24:02,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:24:02,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:24:02,880 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:24:02,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:24:02,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:24:02,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:24:02,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:24:02,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:24:02,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 699c9c8063acd4bd53cef44ad5ead9f63bc9d124723ec1a4a717150e95ac10f2 [2024-10-12 16:24:03,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:24:03,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:24:03,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:24:03,170 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:24:03,170 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:24:03,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label33.c [2024-10-12 16:24:04,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:24:04,919 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:24:04,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label33.c [2024-10-12 16:24:04,942 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22ec04653/45dd9b60748b42bdbc8ac2a9ad34ab7d/FLAGa101a4fbb [2024-10-12 16:24:04,958 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22ec04653/45dd9b60748b42bdbc8ac2a9ad34ab7d [2024-10-12 16:24:04,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:24:04,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:24:04,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:24:04,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:24:04,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:24:04,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:24:04" (1/1) ... [2024-10-12 16:24:04,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc7f28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:04, skipping insertion in model container [2024-10-12 16:24:04,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:24:04" (1/1) ... [2024-10-12 16:24:05,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:24:05,342 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label33.c[3017,3030] [2024-10-12 16:24:05,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:24:05,697 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:24:05,718 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label33.c[3017,3030] [2024-10-12 16:24:05,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:24:05,884 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:24:05,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05 WrapperNode [2024-10-12 16:24:05,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:24:05,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:24:05,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:24:05,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:24:05,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:05,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,052 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-10-12 16:24:06,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:24:06,053 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:24:06,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:24:06,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:24:06,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,192 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 16:24:06,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,193 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:24:06,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:24:06,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:24:06,363 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:24:06,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (1/1) ... [2024-10-12 16:24:06,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:24:06,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:24:06,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:24:06,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:24:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:24:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:24:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:24:06,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:24:06,511 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:24:06,513 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:24:08,509 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-10-12 16:24:08,509 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:24:08,563 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:24:08,563 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:24:08,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:24:08 BoogieIcfgContainer [2024-10-12 16:24:08,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:24:08,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:24:08,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:24:08,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:24:08,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:24:04" (1/3) ... [2024-10-12 16:24:08,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a789cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:24:08, skipping insertion in model container [2024-10-12 16:24:08,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:24:05" (2/3) ... [2024-10-12 16:24:08,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a789cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:24:08, skipping insertion in model container [2024-10-12 16:24:08,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:24:08" (3/3) ... [2024-10-12 16:24:08,572 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label33.c [2024-10-12 16:24:08,589 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:24:08,590 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:24:08,668 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:24:08,678 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;@7a68cd7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:24:08,678 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:24:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:08,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 16:24:08,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:08,694 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] [2024-10-12 16:24:08,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:08,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:08,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1943363471, now seen corresponding path program 1 times [2024-10-12 16:24:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:08,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337055284] [2024-10-12 16:24:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:08,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:24:08,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337055284] [2024-10-12 16:24:08,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337055284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:08,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:08,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:24:08,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641524589] [2024-10-12 16:24:08,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:08,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:24:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:08,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:24:08,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:24:08,931 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:08,993 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2024-10-12 16:24:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:24:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-10-12 16:24:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:09,010 INFO L225 Difference]: With dead ends: 667 [2024-10-12 16:24:09,011 INFO L226 Difference]: Without dead ends: 332 [2024-10-12 16:24:09,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:24:09,021 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:09,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:24:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-12 16:24:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2024-10-12 16:24:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2024-10-12 16:24:09,080 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 26 [2024-10-12 16:24:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:09,080 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2024-10-12 16:24:09,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2024-10-12 16:24:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 16:24:09,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:09,082 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] [2024-10-12 16:24:09,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:24:09,082 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:09,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:09,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1562058276, now seen corresponding path program 1 times [2024-10-12 16:24:09,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:09,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064429020] [2024-10-12 16:24:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:09,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:24:09,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064429020] [2024-10-12 16:24:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064429020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:09,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:24:09,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209450578] [2024-10-12 16:24:09,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:09,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:24:09,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:09,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:24:09,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:24:09,355 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:11,949 INFO L93 Difference]: Finished difference Result 1321 states and 2379 transitions. [2024-10-12 16:24:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:24:11,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-10-12 16:24:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:11,955 INFO L225 Difference]: With dead ends: 1321 [2024-10-12 16:24:11,956 INFO L226 Difference]: Without dead ends: 990 [2024-10-12 16:24:11,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:24:11,958 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 1046 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:11,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 66 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:24:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-10-12 16:24:12,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 990. [2024-10-12 16:24:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.4984833164812943) internal successors, (1482), 989 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1482 transitions. [2024-10-12 16:24:12,007 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1482 transitions. Word has length 26 [2024-10-12 16:24:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:12,007 INFO L471 AbstractCegarLoop]: Abstraction has 990 states and 1482 transitions. [2024-10-12 16:24:12,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1482 transitions. [2024-10-12 16:24:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-10-12 16:24:12,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:12,017 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:24:12,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:24:12,018 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:12,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1483779196, now seen corresponding path program 1 times [2024-10-12 16:24:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:12,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333598461] [2024-10-12 16:24:12,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:24:12,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:12,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333598461] [2024-10-12 16:24:12,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333598461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:12,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:12,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:24:12,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162614437] [2024-10-12 16:24:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:12,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:12,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:12,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:12,375 INFO L87 Difference]: Start difference. First operand 990 states and 1482 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) [2024-10-12 16:24:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:13,556 INFO L93 Difference]: Finished difference Result 1979 states and 3167 transitions. [2024-10-12 16:24:13,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:13,557 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 216 [2024-10-12 16:24:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:13,563 INFO L225 Difference]: With dead ends: 1979 [2024-10-12 16:24:13,563 INFO L226 Difference]: Without dead ends: 1319 [2024-10-12 16:24:13,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:13,566 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 279 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:13,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 536 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:24:13,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2024-10-12 16:24:13,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2024-10-12 16:24:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.4241274658573597) internal successors, (1877), 1318 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1877 transitions. [2024-10-12 16:24:13,602 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1877 transitions. Word has length 216 [2024-10-12 16:24:13,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:13,603 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1877 transitions. [2024-10-12 16:24:13,603 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) [2024-10-12 16:24:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1877 transitions. [2024-10-12 16:24:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-10-12 16:24:13,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:13,611 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:24:13,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:24:13,612 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:13,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:13,613 INFO L85 PathProgramCache]: Analyzing trace with hash 982316380, now seen corresponding path program 1 times [2024-10-12 16:24:13,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:13,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265525761] [2024-10-12 16:24:13,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:13,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-12 16:24:13,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265525761] [2024-10-12 16:24:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265525761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:13,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:13,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:24:13,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215945946] [2024-10-12 16:24:13,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:13,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:13,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:13,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:13,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:13,875 INFO L87 Difference]: Start difference. First operand 1319 states and 1877 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:15,178 INFO L93 Difference]: Finished difference Result 3295 states and 4946 transitions. [2024-10-12 16:24:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:15,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 219 [2024-10-12 16:24:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:15,186 INFO L225 Difference]: With dead ends: 3295 [2024-10-12 16:24:15,186 INFO L226 Difference]: Without dead ends: 1977 [2024-10-12 16:24:15,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:15,190 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 339 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:15,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 154 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:24:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-10-12 16:24:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1977. [2024-10-12 16:24:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1976 states have (on average 1.1336032388663968) internal successors, (2240), 1976 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2240 transitions. [2024-10-12 16:24:15,224 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2240 transitions. Word has length 219 [2024-10-12 16:24:15,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:15,224 INFO L471 AbstractCegarLoop]: Abstraction has 1977 states and 2240 transitions. [2024-10-12 16:24:15,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2240 transitions. [2024-10-12 16:24:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-10-12 16:24:15,229 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:15,229 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:24:15,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:24:15,230 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:15,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:15,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1651758462, now seen corresponding path program 1 times [2024-10-12 16:24:15,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:15,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820473038] [2024-10-12 16:24:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:15,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-12 16:24:15,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:15,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820473038] [2024-10-12 16:24:15,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820473038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:15,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:15,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:24:15,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058162154] [2024-10-12 16:24:15,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:15,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:15,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:15,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:15,554 INFO L87 Difference]: Start difference. First operand 1977 states and 2240 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 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) [2024-10-12 16:24:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:16,422 INFO L93 Difference]: Finished difference Result 3953 states and 4507 transitions. [2024-10-12 16:24:16,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:16,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 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 345 [2024-10-12 16:24:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:16,430 INFO L225 Difference]: With dead ends: 3953 [2024-10-12 16:24:16,430 INFO L226 Difference]: Without dead ends: 2306 [2024-10-12 16:24:16,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:16,436 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 262 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:16,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 29 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:24:16,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2024-10-12 16:24:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2024-10-12 16:24:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 1.0928416485900216) internal successors, (2519), 2305 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 2519 transitions. [2024-10-12 16:24:16,473 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 2519 transitions. Word has length 345 [2024-10-12 16:24:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:16,473 INFO L471 AbstractCegarLoop]: Abstraction has 2306 states and 2519 transitions. [2024-10-12 16:24:16,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 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) [2024-10-12 16:24:16,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 2519 transitions. [2024-10-12 16:24:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2024-10-12 16:24:16,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:16,485 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:24:16,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:24:16,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:16,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:16,487 INFO L85 PathProgramCache]: Analyzing trace with hash -455295253, now seen corresponding path program 1 times [2024-10-12 16:24:16,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:16,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089414322] [2024-10-12 16:24:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:16,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-12 16:24:17,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089414322] [2024-10-12 16:24:17,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089414322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:17,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:17,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:24:17,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875221264] [2024-10-12 16:24:17,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:17,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:24:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:24:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:24:17,585 INFO L87 Difference]: Start difference. First operand 2306 states and 2519 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:19,145 INFO L93 Difference]: Finished difference Result 7901 states and 8694 transitions. [2024-10-12 16:24:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:24:19,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 603 [2024-10-12 16:24:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:19,164 INFO L225 Difference]: With dead ends: 7901 [2024-10-12 16:24:19,165 INFO L226 Difference]: Without dead ends: 5925 [2024-10-12 16:24:19,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:24:19,170 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 302 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:19,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 105 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-12 16:24:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2024-10-12 16:24:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5596. [2024-10-12 16:24:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 1.0804289544235925) internal successors, (6045), 5595 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 6045 transitions. [2024-10-12 16:24:19,281 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 6045 transitions. Word has length 603 [2024-10-12 16:24:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:19,282 INFO L471 AbstractCegarLoop]: Abstraction has 5596 states and 6045 transitions. [2024-10-12 16:24:19,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 6045 transitions. [2024-10-12 16:24:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2024-10-12 16:24:19,300 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:19,301 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 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] [2024-10-12 16:24:19,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:24:19,301 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:19,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1428601482, now seen corresponding path program 1 times [2024-10-12 16:24:19,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:19,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47846940] [2024-10-12 16:24:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:19,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-10-12 16:24:20,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:20,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47846940] [2024-10-12 16:24:20,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47846940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:20,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:20,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:24:20,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287284433] [2024-10-12 16:24:20,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:20,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:20,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:20,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:20,058 INFO L87 Difference]: Start difference. First operand 5596 states and 6045 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:20,968 INFO L93 Difference]: Finished difference Result 13165 states and 14282 transitions. [2024-10-12 16:24:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:20,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 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 699 [2024-10-12 16:24:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:20,989 INFO L225 Difference]: With dead ends: 13165 [2024-10-12 16:24:20,989 INFO L226 Difference]: Without dead ends: 7899 [2024-10-12 16:24:20,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:20,997 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 98 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:20,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 36 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:24:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2024-10-12 16:24:21,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7570. [2024-10-12 16:24:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.0803276522658212) internal successors, (8177), 7569 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 8177 transitions. [2024-10-12 16:24:21,119 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 8177 transitions. Word has length 699 [2024-10-12 16:24:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:21,120 INFO L471 AbstractCegarLoop]: Abstraction has 7570 states and 8177 transitions. [2024-10-12 16:24:21,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:21,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 8177 transitions. [2024-10-12 16:24:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2024-10-12 16:24:21,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:21,132 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-10-12 16:24:21,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:24:21,132 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:21,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash -535586024, now seen corresponding path program 1 times [2024-10-12 16:24:21,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:21,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433052057] [2024-10-12 16:24:21,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:21,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 1118 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-10-12 16:24:21,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:21,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433052057] [2024-10-12 16:24:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433052057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:21,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:21,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:24:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134275582] [2024-10-12 16:24:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:21,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:21,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:21,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:21,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:21,986 INFO L87 Difference]: Start difference. First operand 7570 states and 8177 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:22,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:22,901 INFO L93 Difference]: Finished difference Result 18429 states and 20008 transitions. [2024-10-12 16:24:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:22,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 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 774 [2024-10-12 16:24:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:22,937 INFO L225 Difference]: With dead ends: 18429 [2024-10-12 16:24:22,937 INFO L226 Difference]: Without dead ends: 11518 [2024-10-12 16:24:22,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:22,947 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 220 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:22,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 36 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:24:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11518 states. [2024-10-12 16:24:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11518 to 10860. [2024-10-12 16:24:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 10859 states have (on average 1.0787365319090156) internal successors, (11714), 10859 states have internal predecessors, (11714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 11714 transitions. [2024-10-12 16:24:23,124 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 11714 transitions. Word has length 774 [2024-10-12 16:24:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:23,125 INFO L471 AbstractCegarLoop]: Abstraction has 10860 states and 11714 transitions. [2024-10-12 16:24:23,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 11714 transitions. [2024-10-12 16:24:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2024-10-12 16:24:23,151 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:23,151 INFO L215 NwaCegarLoop]: trace histogram [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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:24:23,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:24:23,152 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:23,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2074022638, now seen corresponding path program 1 times [2024-10-12 16:24:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:23,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966026583] [2024-10-12 16:24:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:23,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 1752 proven. 0 refuted. 0 times theorem prover too weak. 2045 trivial. 0 not checked. [2024-10-12 16:24:24,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:24,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966026583] [2024-10-12 16:24:24,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966026583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:24,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:24,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:24:24,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936962695] [2024-10-12 16:24:24,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:24,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:24:24,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:24:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:24:24,948 INFO L87 Difference]: Start difference. First operand 10860 states and 11714 transitions. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:26,143 INFO L93 Difference]: Finished difference Result 21390 states and 23096 transitions. [2024-10-12 16:24:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:24:26,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 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 1202 [2024-10-12 16:24:26,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:26,163 INFO L225 Difference]: With dead ends: 21390 [2024-10-12 16:24:26,163 INFO L226 Difference]: Without dead ends: 10860 [2024-10-12 16:24:26,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:24:26,175 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 268 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:26,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 112 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:24:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10860 states. [2024-10-12 16:24:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10860 to 10860. [2024-10-12 16:24:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 10859 states have (on average 1.078276084353992) internal successors, (11709), 10859 states have internal predecessors, (11709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 11709 transitions. [2024-10-12 16:24:26,317 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 11709 transitions. Word has length 1202 [2024-10-12 16:24:26,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:26,318 INFO L471 AbstractCegarLoop]: Abstraction has 10860 states and 11709 transitions. [2024-10-12 16:24:26,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:26,318 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 11709 transitions. [2024-10-12 16:24:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1211 [2024-10-12 16:24:26,337 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:26,338 INFO L215 NwaCegarLoop]: trace histogram [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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:24:26,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:24:26,338 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:26,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash -181606146, now seen corresponding path program 1 times [2024-10-12 16:24:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:26,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507305303] [2024-10-12 16:24:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:26,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 1595 proven. 157 refuted. 0 times theorem prover too weak. 2045 trivial. 0 not checked. [2024-10-12 16:24:28,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:28,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507305303] [2024-10-12 16:24:28,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507305303] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:24:28,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264747274] [2024-10-12 16:24:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:28,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:24:28,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:24:28,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:24:28,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:24:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:28,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:24:28,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:24:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 2546 proven. 0 refuted. 0 times theorem prover too weak. 1251 trivial. 0 not checked. [2024-10-12 16:24:29,233 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:24:29,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264747274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:29,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:24:29,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:24:29,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907788569] [2024-10-12 16:24:29,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:29,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:29,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:29,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:29,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:29,236 INFO L87 Difference]: Start difference. First operand 10860 states and 11709 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:30,064 INFO L93 Difference]: Finished difference Result 24022 states and 25976 transitions. [2024-10-12 16:24:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 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 1210 [2024-10-12 16:24:30,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:30,088 INFO L225 Difference]: With dead ends: 24022 [2024-10-12 16:24:30,089 INFO L226 Difference]: Without dead ends: 13821 [2024-10-12 16:24:30,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:30,102 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 236 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:30,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 29 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:24:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2024-10-12 16:24:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 12505. [2024-10-12 16:24:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12505 states, 12504 states have (on average 1.0818937939859246) internal successors, (13528), 12504 states have internal predecessors, (13528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12505 states to 12505 states and 13528 transitions. [2024-10-12 16:24:30,342 INFO L78 Accepts]: Start accepts. Automaton has 12505 states and 13528 transitions. Word has length 1210 [2024-10-12 16:24:30,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:30,343 INFO L471 AbstractCegarLoop]: Abstraction has 12505 states and 13528 transitions. [2024-10-12 16:24:30,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 12505 states and 13528 transitions. [2024-10-12 16:24:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1212 [2024-10-12 16:24:30,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:30,379 INFO L215 NwaCegarLoop]: trace histogram [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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:24:30,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 16:24:30,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 16:24:30,580 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:30,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:30,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1977398883, now seen corresponding path program 1 times [2024-10-12 16:24:30,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:30,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166302550] [2024-10-12 16:24:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:30,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3805 backedges. 1597 proven. 157 refuted. 0 times theorem prover too weak. 2051 trivial. 0 not checked. [2024-10-12 16:24:32,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:32,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166302550] [2024-10-12 16:24:32,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166302550] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:24:32,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702738485] [2024-10-12 16:24:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:32,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:24:32,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:24:32,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:24:32,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:24:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:33,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:24:33,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:24:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3805 backedges. 2489 proven. 0 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2024-10-12 16:24:33,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:24:33,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702738485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:33,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:24:33,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:24:33,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22405268] [2024-10-12 16:24:33,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:33,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:33,238 INFO L87 Difference]: Start difference. First operand 12505 states and 13528 transitions. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:34,054 INFO L93 Difference]: Finished difference Result 26325 states and 28488 transitions. [2024-10-12 16:24:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 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 1211 [2024-10-12 16:24:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:34,080 INFO L225 Difference]: With dead ends: 26325 [2024-10-12 16:24:34,080 INFO L226 Difference]: Without dead ends: 14479 [2024-10-12 16:24:34,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1215 GetRequests, 1210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:34,092 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 198 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:34,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 395 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:24:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2024-10-12 16:24:34,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 13821. [2024-10-12 16:24:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13821 states, 13820 states have (on average 1.0536903039073806) internal successors, (14562), 13820 states have internal predecessors, (14562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 14562 transitions. [2024-10-12 16:24:34,256 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 14562 transitions. Word has length 1211 [2024-10-12 16:24:34,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:34,257 INFO L471 AbstractCegarLoop]: Abstraction has 13821 states and 14562 transitions. [2024-10-12 16:24:34,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 14562 transitions. [2024-10-12 16:24:34,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1253 [2024-10-12 16:24:34,278 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:34,278 INFO L215 NwaCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:24:34,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:24:34,479 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 [2024-10-12 16:24:34,479 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:34,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash 670902879, now seen corresponding path program 1 times [2024-10-12 16:24:34,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:34,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521976122] [2024-10-12 16:24:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:34,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 1589 proven. 157 refuted. 0 times theorem prover too weak. 1658 trivial. 0 not checked. [2024-10-12 16:24:36,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521976122] [2024-10-12 16:24:36,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521976122] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:24:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150876881] [2024-10-12 16:24:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:36,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:24:36,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:24:36,481 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) [2024-10-12 16:24:36,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:24:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:36,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:24:36,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:24:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 1106 proven. 0 refuted. 0 times theorem prover too weak. 2298 trivial. 0 not checked. [2024-10-12 16:24:37,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:24:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150876881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:37,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:24:37,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:24:37,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900987904] [2024-10-12 16:24:37,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:37,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:37,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:37,085 INFO L87 Difference]: Start difference. First operand 13821 states and 14562 transitions. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:37,803 INFO L93 Difference]: Finished difference Result 28299 states and 29809 transitions. [2024-10-12 16:24:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 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 1252 [2024-10-12 16:24:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:37,826 INFO L225 Difference]: With dead ends: 28299 [2024-10-12 16:24:37,826 INFO L226 Difference]: Without dead ends: 13492 [2024-10-12 16:24:37,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:37,841 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 179 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:37,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 390 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:24:37,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13492 states. [2024-10-12 16:24:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13492 to 13163. [2024-10-12 16:24:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0430025831940435) internal successors, (13728), 13162 states have internal predecessors, (13728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13728 transitions. [2024-10-12 16:24:37,990 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13728 transitions. Word has length 1252 [2024-10-12 16:24:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:37,991 INFO L471 AbstractCegarLoop]: Abstraction has 13163 states and 13728 transitions. [2024-10-12 16:24:37,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:37,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13728 transitions. [2024-10-12 16:24:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1305 [2024-10-12 16:24:38,013 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:38,014 INFO L215 NwaCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:24:38,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 16:24:38,214 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 [2024-10-12 16:24:38,215 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:38,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:38,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1447376339, now seen corresponding path program 1 times [2024-10-12 16:24:38,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:38,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434646396] [2024-10-12 16:24:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:38,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:39,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 1665 proven. 157 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2024-10-12 16:24:39,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:39,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434646396] [2024-10-12 16:24:39,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434646396] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:24:39,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621445574] [2024-10-12 16:24:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:39,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:24:39,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:24:39,952 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) [2024-10-12 16:24:39,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 16:24:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:40,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:24:40,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:24:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3573 backedges. 2379 proven. 0 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2024-10-12 16:24:40,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:24:40,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621445574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:40,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:24:40,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:24:40,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054448615] [2024-10-12 16:24:40,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:40,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:40,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:40,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:40,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:40,506 INFO L87 Difference]: Start difference. First operand 13163 states and 13728 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:41,245 INFO L93 Difference]: Finished difference Result 28628 states and 29955 transitions. [2024-10-12 16:24:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 1304 [2024-10-12 16:24:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:41,273 INFO L225 Difference]: With dead ends: 28628 [2024-10-12 16:24:41,273 INFO L226 Difference]: Without dead ends: 16124 [2024-10-12 16:24:41,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1308 GetRequests, 1303 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:41,286 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 199 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:41,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 89 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:24:41,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2024-10-12 16:24:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 16124. [2024-10-12 16:24:41,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.0392606834956273) internal successors, (16756), 16123 states have internal predecessors, (16756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 16756 transitions. [2024-10-12 16:24:41,565 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 16756 transitions. Word has length 1304 [2024-10-12 16:24:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:41,566 INFO L471 AbstractCegarLoop]: Abstraction has 16124 states and 16756 transitions. [2024-10-12 16:24:41,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:41,567 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 16756 transitions. [2024-10-12 16:24:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2024-10-12 16:24:41,605 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:41,606 INFO L215 NwaCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:24:41,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 16:24:41,806 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 [2024-10-12 16:24:41,807 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:41,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash 745785764, now seen corresponding path program 1 times [2024-10-12 16:24:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670533825] [2024-10-12 16:24:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3488 backedges. 1967 proven. 0 refuted. 0 times theorem prover too weak. 1521 trivial. 0 not checked. [2024-10-12 16:24:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670533825] [2024-10-12 16:24:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670533825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:42,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:42,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:24:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561026096] [2024-10-12 16:24:42,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:42,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:42,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:42,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:42,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:42,872 INFO L87 Difference]: Start difference. First operand 16124 states and 16756 transitions. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:43,512 INFO L93 Difference]: Finished difference Result 31589 states and 32849 transitions. [2024-10-12 16:24:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:43,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 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 1368 [2024-10-12 16:24:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:43,533 INFO L225 Difference]: With dead ends: 31589 [2024-10-12 16:24:43,534 INFO L226 Difference]: Without dead ends: 16124 [2024-10-12 16:24:43,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:43,545 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 93 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:43,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 374 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:24:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2024-10-12 16:24:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 16124. [2024-10-12 16:24:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.036655709235254) internal successors, (16714), 16123 states have internal predecessors, (16714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 16714 transitions. [2024-10-12 16:24:43,714 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 16714 transitions. Word has length 1368 [2024-10-12 16:24:43,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:43,715 INFO L471 AbstractCegarLoop]: Abstraction has 16124 states and 16714 transitions. [2024-10-12 16:24:43,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 16714 transitions. [2024-10-12 16:24:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1434 [2024-10-12 16:24:43,735 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:43,735 INFO L215 NwaCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 6, 6, 6, 6, 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, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2024-10-12 16:24:43,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:24:43,736 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:43,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:43,737 INFO L85 PathProgramCache]: Analyzing trace with hash 220068390, now seen corresponding path program 1 times [2024-10-12 16:24:43,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:43,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788164648] [2024-10-12 16:24:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:43,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3935 backedges. 1013 proven. 1546 refuted. 0 times theorem prover too weak. 1376 trivial. 0 not checked. [2024-10-12 16:24:45,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:45,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788164648] [2024-10-12 16:24:45,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788164648] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:24:45,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367501707] [2024-10-12 16:24:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:45,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:24:45,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:24:45,352 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) [2024-10-12 16:24:45,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 16:24:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:45,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:24:45,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:24:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3935 backedges. 1184 proven. 0 refuted. 0 times theorem prover too weak. 2751 trivial. 0 not checked. [2024-10-12 16:24:45,914 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:24:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367501707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:45,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:24:45,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 16:24:45,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604411636] [2024-10-12 16:24:45,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:45,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:45,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:45,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:45,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:24:45,917 INFO L87 Difference]: Start difference. First operand 16124 states and 16714 transitions. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:46,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:46,583 INFO L93 Difference]: Finished difference Result 31589 states and 32765 transitions. [2024-10-12 16:24:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:46,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 1433 [2024-10-12 16:24:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:46,601 INFO L225 Difference]: With dead ends: 31589 [2024-10-12 16:24:46,601 INFO L226 Difference]: Without dead ends: 16124 [2024-10-12 16:24:46,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1438 GetRequests, 1434 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:24:46,613 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 169 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:46,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 360 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:24:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2024-10-12 16:24:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 16124. [2024-10-12 16:24:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.032314085467965) internal successors, (16644), 16123 states have internal predecessors, (16644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 16644 transitions. [2024-10-12 16:24:46,785 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 16644 transitions. Word has length 1433 [2024-10-12 16:24:46,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:46,787 INFO L471 AbstractCegarLoop]: Abstraction has 16124 states and 16644 transitions. [2024-10-12 16:24:46,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 16644 transitions. [2024-10-12 16:24:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1632 [2024-10-12 16:24:46,813 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:46,814 INFO L215 NwaCegarLoop]: trace histogram [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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:24:46,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 16:24:47,014 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,SelfDestructingSolverStorable14 [2024-10-12 16:24:47,015 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:47,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2103404106, now seen corresponding path program 1 times [2024-10-12 16:24:47,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:47,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468075498] [2024-10-12 16:24:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:47,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5129 backedges. 3501 proven. 0 refuted. 0 times theorem prover too weak. 1628 trivial. 0 not checked. [2024-10-12 16:24:48,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:48,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468075498] [2024-10-12 16:24:48,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468075498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:48,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:48,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 16:24:48,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950816114] [2024-10-12 16:24:48,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:48,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 16:24:48,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 16:24:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:24:48,574 INFO L87 Difference]: Start difference. First operand 16124 states and 16644 transitions. Second operand has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:49,749 INFO L93 Difference]: Finished difference Result 31590 states and 32626 transitions. [2024-10-12 16:24:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 16:24:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 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 1631 [2024-10-12 16:24:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:49,764 INFO L225 Difference]: With dead ends: 31590 [2024-10-12 16:24:49,764 INFO L226 Difference]: Without dead ends: 16125 [2024-10-12 16:24:49,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:49,773 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 357 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:49,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 553 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:24:49,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2024-10-12 16:24:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 16124. [2024-10-12 16:24:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.0320659926812628) internal successors, (16640), 16123 states have internal predecessors, (16640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 16640 transitions. [2024-10-12 16:24:50,001 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 16640 transitions. Word has length 1631 [2024-10-12 16:24:50,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:50,002 INFO L471 AbstractCegarLoop]: Abstraction has 16124 states and 16640 transitions. [2024-10-12 16:24:50,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 16640 transitions. [2024-10-12 16:24:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1646 [2024-10-12 16:24:50,046 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:50,047 INFO L215 NwaCegarLoop]: trace histogram [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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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, 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] [2024-10-12 16:24:50,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:24:50,047 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:50,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:50,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1481495870, now seen corresponding path program 1 times [2024-10-12 16:24:50,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:50,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375373931] [2024-10-12 16:24:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:50,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5019 backedges. 3455 proven. 100 refuted. 0 times theorem prover too weak. 1464 trivial. 0 not checked. [2024-10-12 16:24:52,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:52,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375373931] [2024-10-12 16:24:52,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375373931] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:24:52,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665079894] [2024-10-12 16:24:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:52,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:24:52,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:24:52,178 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) [2024-10-12 16:24:52,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 16:24:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:52,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:24:52,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:24:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5019 backedges. 3066 proven. 0 refuted. 0 times theorem prover too weak. 1953 trivial. 0 not checked. [2024-10-12 16:24:52,851 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:24:52,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665079894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:52,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:24:52,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 16:24:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550218162] [2024-10-12 16:24:52,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:52,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:52,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:52,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:52,854 INFO L87 Difference]: Start difference. First operand 16124 states and 16640 transitions. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:53,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:53,566 INFO L93 Difference]: Finished difference Result 31589 states and 32617 transitions. [2024-10-12 16:24:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:53,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 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 1645 [2024-10-12 16:24:53,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:53,580 INFO L225 Difference]: With dead ends: 31589 [2024-10-12 16:24:53,580 INFO L226 Difference]: Without dead ends: 16124 [2024-10-12 16:24:53,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1651 GetRequests, 1646 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:53,592 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 95 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:53,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 52 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:24:53,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2024-10-12 16:24:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 16124. [2024-10-12 16:24:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 1.0311356447311295) internal successors, (16625), 16123 states have internal predecessors, (16625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 16625 transitions. [2024-10-12 16:24:53,787 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 16625 transitions. Word has length 1645 [2024-10-12 16:24:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:53,787 INFO L471 AbstractCegarLoop]: Abstraction has 16124 states and 16625 transitions. [2024-10-12 16:24:53,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 16625 transitions. [2024-10-12 16:24:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2024-10-12 16:24:53,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:53,813 INFO L215 NwaCegarLoop]: trace histogram [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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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, 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] [2024-10-12 16:24:53,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 16:24:54,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 16:24:54,014 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:54,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1792382048, now seen corresponding path program 1 times [2024-10-12 16:24:54,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:54,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499942485] [2024-10-12 16:24:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:54,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:56,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5579 backedges. 3789 proven. 125 refuted. 0 times theorem prover too weak. 1665 trivial. 0 not checked. [2024-10-12 16:24:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499942485] [2024-10-12 16:24:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499942485] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:24:56,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995861760] [2024-10-12 16:24:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:56,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:24:56,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:24:56,018 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) [2024-10-12 16:24:56,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 16:24:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:56,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:24:56,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:24:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5579 backedges. 3814 proven. 0 refuted. 0 times theorem prover too weak. 1765 trivial. 0 not checked. [2024-10-12 16:24:57,041 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:24:57,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995861760] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:57,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:24:57,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-12 16:24:57,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707845386] [2024-10-12 16:24:57,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:57,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:57,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:57,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:57,045 INFO L87 Difference]: Start difference. First operand 16124 states and 16625 transitions. Second operand has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:57,725 INFO L93 Difference]: Finished difference Result 31589 states and 32587 transitions. [2024-10-12 16:24:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:57,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 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 1712 [2024-10-12 16:24:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:57,738 INFO L225 Difference]: With dead ends: 31589 [2024-10-12 16:24:57,738 INFO L226 Difference]: Without dead ends: 16124 [2024-10-12 16:24:57,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1718 GetRequests, 1713 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:24:57,746 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 62 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:57,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 426 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:24:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2024-10-12 16:24:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 15795. [2024-10-12 16:24:57,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15795 states, 15794 states have (on average 1.0312143852095732) internal successors, (16287), 15794 states have internal predecessors, (16287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15795 states to 15795 states and 16287 transitions. [2024-10-12 16:24:57,881 INFO L78 Accepts]: Start accepts. Automaton has 15795 states and 16287 transitions. Word has length 1712 [2024-10-12 16:24:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:57,883 INFO L471 AbstractCegarLoop]: Abstraction has 15795 states and 16287 transitions. [2024-10-12 16:24:57,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 15795 states and 16287 transitions. [2024-10-12 16:24:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1728 [2024-10-12 16:24:57,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:57,959 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:24:57,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 16:24:58,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:24:58,160 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:58,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:58,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1674275553, now seen corresponding path program 1 times [2024-10-12 16:24:58,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:58,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678575687] [2024-10-12 16:24:58,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:58,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:24:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:24:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5943 backedges. 3815 proven. 0 refuted. 0 times theorem prover too weak. 2128 trivial. 0 not checked. [2024-10-12 16:24:59,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:24:59,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678575687] [2024-10-12 16:24:59,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678575687] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:24:59,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:24:59,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:24:59,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472462791] [2024-10-12 16:24:59,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:24:59,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:24:59,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:24:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:24:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:59,117 INFO L87 Difference]: Start difference. First operand 15795 states and 16287 transitions. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:59,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:24:59,788 INFO L93 Difference]: Finished difference Result 32247 states and 33247 transitions. [2024-10-12 16:24:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:24:59,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 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 1727 [2024-10-12 16:24:59,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:24:59,802 INFO L225 Difference]: With dead ends: 32247 [2024-10-12 16:24:59,802 INFO L226 Difference]: Without dead ends: 16782 [2024-10-12 16:24:59,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:24:59,812 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 193 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:24:59,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 418 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:24:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16782 states. [2024-10-12 16:24:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16782 to 16453. [2024-10-12 16:24:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16453 states, 16452 states have (on average 1.0271091660588378) internal successors, (16898), 16452 states have internal predecessors, (16898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16453 states to 16453 states and 16898 transitions. [2024-10-12 16:24:59,938 INFO L78 Accepts]: Start accepts. Automaton has 16453 states and 16898 transitions. Word has length 1727 [2024-10-12 16:24:59,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:24:59,939 INFO L471 AbstractCegarLoop]: Abstraction has 16453 states and 16898 transitions. [2024-10-12 16:24:59,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:24:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 16453 states and 16898 transitions. [2024-10-12 16:24:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1758 [2024-10-12 16:24:59,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:24:59,958 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-10-12 16:24:59,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 16:24:59,959 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:24:59,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:24:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1370167624, now seen corresponding path program 1 times [2024-10-12 16:24:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:24:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492403622] [2024-10-12 16:24:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:24:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:25:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:25:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6033 backedges. 3112 proven. 258 refuted. 0 times theorem prover too weak. 2663 trivial. 0 not checked. [2024-10-12 16:25:01,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:25:01,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492403622] [2024-10-12 16:25:01,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492403622] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:25:01,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522835847] [2024-10-12 16:25:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:25:01,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:25:01,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:25:01,759 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) [2024-10-12 16:25:01,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 16:25:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:25:02,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 2025 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 16:25:02,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:25:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6033 backedges. 4070 proven. 0 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2024-10-12 16:25:03,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:25:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522835847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:25:03,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:25:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-12 16:25:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939933707] [2024-10-12 16:25:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:25:03,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:25:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:25:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:25:03,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:25:03,674 INFO L87 Difference]: Start difference. First operand 16453 states and 16898 transitions. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:04,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:25:04,574 INFO L93 Difference]: Finished difference Result 32247 states and 33133 transitions. [2024-10-12 16:25:04,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:25:04,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 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 1757 [2024-10-12 16:25:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:25:04,590 INFO L225 Difference]: With dead ends: 32247 [2024-10-12 16:25:04,590 INFO L226 Difference]: Without dead ends: 16453 [2024-10-12 16:25:04,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1764 GetRequests, 1756 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:25:04,600 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 120 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:25:04,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 549 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:25:04,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16453 states. [2024-10-12 16:25:04,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16453 to 16453. [2024-10-12 16:25:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16453 states, 16452 states have (on average 1.026805251641138) internal successors, (16893), 16452 states have internal predecessors, (16893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16453 states to 16453 states and 16893 transitions. [2024-10-12 16:25:04,734 INFO L78 Accepts]: Start accepts. Automaton has 16453 states and 16893 transitions. Word has length 1757 [2024-10-12 16:25:04,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:25:04,734 INFO L471 AbstractCegarLoop]: Abstraction has 16453 states and 16893 transitions. [2024-10-12 16:25:04,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 16453 states and 16893 transitions. [2024-10-12 16:25:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1875 [2024-10-12 16:25:04,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:25:04,756 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:25:04,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 16:25:04,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:25:04,957 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:25:04,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:25:04,958 INFO L85 PathProgramCache]: Analyzing trace with hash -384636724, now seen corresponding path program 1 times [2024-10-12 16:25:04,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:25:04,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703724337] [2024-10-12 16:25:04,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:25:04,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:25:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:25:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7537 backedges. 3524 proven. 258 refuted. 0 times theorem prover too weak. 3755 trivial. 0 not checked. [2024-10-12 16:25:06,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:25:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703724337] [2024-10-12 16:25:06,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703724337] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:25:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571899724] [2024-10-12 16:25:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:25:06,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:25:06,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:25:06,856 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) [2024-10-12 16:25:06,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 16:25:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:25:07,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 2168 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:25:07,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:25:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7537 backedges. 4634 proven. 0 refuted. 0 times theorem prover too weak. 2903 trivial. 0 not checked. [2024-10-12 16:25:07,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:25:07,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571899724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:25:07,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:25:07,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 16:25:07,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126773760] [2024-10-12 16:25:07,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:25:07,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:25:07,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:25:07,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:25:07,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:25:07,577 INFO L87 Difference]: Start difference. First operand 16453 states and 16893 transitions. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:25:08,345 INFO L93 Difference]: Finished difference Result 34221 states and 35168 transitions. [2024-10-12 16:25:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:25:08,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 1874 [2024-10-12 16:25:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:25:08,361 INFO L225 Difference]: With dead ends: 34221 [2024-10-12 16:25:08,361 INFO L226 Difference]: Without dead ends: 18427 [2024-10-12 16:25:08,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1873 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:25:08,372 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 225 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:25:08,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 419 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:25:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18427 states. [2024-10-12 16:25:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18427 to 18427. [2024-10-12 16:25:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18427 states, 18426 states have (on average 1.026375773363725) internal successors, (18912), 18426 states have internal predecessors, (18912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18427 states to 18427 states and 18912 transitions. [2024-10-12 16:25:08,518 INFO L78 Accepts]: Start accepts. Automaton has 18427 states and 18912 transitions. Word has length 1874 [2024-10-12 16:25:08,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:25:08,518 INFO L471 AbstractCegarLoop]: Abstraction has 18427 states and 18912 transitions. [2024-10-12 16:25:08,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 18427 states and 18912 transitions. [2024-10-12 16:25:08,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1896 [2024-10-12 16:25:08,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:25:08,541 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:25:08,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 16:25:08,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:25:08,742 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:25:08,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:25:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2002051268, now seen corresponding path program 1 times [2024-10-12 16:25:08,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:25:08,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566513380] [2024-10-12 16:25:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:25:08,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:25:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:25:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 3483 proven. 258 refuted. 0 times theorem prover too weak. 3536 trivial. 0 not checked. [2024-10-12 16:25:10,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:25:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566513380] [2024-10-12 16:25:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566513380] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:25:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528768556] [2024-10-12 16:25:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:25:10,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:25:10,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:25:10,658 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:25:10,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 16:25:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:25:11,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 2183 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 16:25:11,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:25:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 4714 proven. 0 refuted. 0 times theorem prover too weak. 2563 trivial. 0 not checked. [2024-10-12 16:25:11,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:25:11,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528768556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:25:11,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:25:11,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 16:25:11,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400998142] [2024-10-12 16:25:11,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:25:11,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:25:11,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:25:11,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:25:11,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:25:11,774 INFO L87 Difference]: Start difference. First operand 18427 states and 18912 transitions. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:25:12,460 INFO L93 Difference]: Finished difference Result 37182 states and 38169 transitions. [2024-10-12 16:25:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:25:12,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 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 1895 [2024-10-12 16:25:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:25:12,479 INFO L225 Difference]: With dead ends: 37182 [2024-10-12 16:25:12,479 INFO L226 Difference]: Without dead ends: 19414 [2024-10-12 16:25:12,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1900 GetRequests, 1894 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:25:12,492 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 61 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:25:12,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 428 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:25:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19414 states. [2024-10-12 16:25:12,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19414 to 19414. [2024-10-12 16:25:12,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19414 states, 19413 states have (on average 1.024880234894143) internal successors, (19896), 19413 states have internal predecessors, (19896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19414 states to 19414 states and 19896 transitions. [2024-10-12 16:25:12,650 INFO L78 Accepts]: Start accepts. Automaton has 19414 states and 19896 transitions. Word has length 1895 [2024-10-12 16:25:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:25:12,651 INFO L471 AbstractCegarLoop]: Abstraction has 19414 states and 19896 transitions. [2024-10-12 16:25:12,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 19414 states and 19896 transitions. [2024-10-12 16:25:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1926 [2024-10-12 16:25:12,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:25:12,675 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-12 16:25:12,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 16:25:12,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-12 16:25:12,876 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:25:12,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:25:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash 939168297, now seen corresponding path program 1 times [2024-10-12 16:25:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:25:12,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927518818] [2024-10-12 16:25:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:25:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:25:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:25:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 3783 proven. 0 refuted. 0 times theorem prover too weak. 3892 trivial. 0 not checked. [2024-10-12 16:25:14,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:25:14,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927518818] [2024-10-12 16:25:14,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927518818] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:25:14,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:25:14,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:25:14,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903817507] [2024-10-12 16:25:14,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:25:14,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:25:14,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:25:14,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:25:14,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:25:14,523 INFO L87 Difference]: Start difference. First operand 19414 states and 19896 transitions. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:25:15,240 INFO L93 Difference]: Finished difference Result 41788 states and 42835 transitions. [2024-10-12 16:25:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:25:15,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 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 1925 [2024-10-12 16:25:15,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:25:15,266 INFO L225 Difference]: With dead ends: 41788 [2024-10-12 16:25:15,266 INFO L226 Difference]: Without dead ends: 23033 [2024-10-12 16:25:15,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:25:15,278 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 206 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:25:15,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 44 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:25:15,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23033 states. [2024-10-12 16:25:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23033 to 21388. [2024-10-12 16:25:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21388 states, 21387 states have (on average 1.024781409267312) internal successors, (21917), 21387 states have internal predecessors, (21917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21388 states to 21388 states and 21917 transitions. [2024-10-12 16:25:15,445 INFO L78 Accepts]: Start accepts. Automaton has 21388 states and 21917 transitions. Word has length 1925 [2024-10-12 16:25:15,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:25:15,446 INFO L471 AbstractCegarLoop]: Abstraction has 21388 states and 21917 transitions. [2024-10-12 16:25:15,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:25:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 21388 states and 21917 transitions. [2024-10-12 16:25:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1929 [2024-10-12 16:25:15,469 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:25:15,470 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:25:15,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 16:25:15,470 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:25:15,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:25:15,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1850332389, now seen corresponding path program 1 times [2024-10-12 16:25:15,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:25:15,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859656401] [2024-10-12 16:25:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:25:15,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:25:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat