./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label10.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 af34cca1265ebda4ef436604d1992244d07816396f61d2a729ccbfca2d3a784e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:05:08,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:05:08,549 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:05:08,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:05:08,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:05:08,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:05:08,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:05:08,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:05:08,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:05:08,575 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:05:08,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:05:08,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:05:08,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:05:08,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:05:08,579 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:05:08,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:05:08,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:05:08,579 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:05:08,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:05:08,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:05:08,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:05:08,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:05:08,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:05:08,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:05:08,582 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:05:08,582 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:05:08,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:05:08,582 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:05:08,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:05:08,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:05:08,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:05:08,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:05:08,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:05:08,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:05:08,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:05:08,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:05:08,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:05:08,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:05:08,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:05:08,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:05:08,584 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:05:08,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:05:08,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af34cca1265ebda4ef436604d1992244d07816396f61d2a729ccbfca2d3a784e [2024-11-19 18:05:08,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:05:08,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:05:08,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:05:08,792 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:05:08,792 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:05:08,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label10.c [2024-11-19 18:05:09,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:05:10,257 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:05:10,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label10.c [2024-11-19 18:05:10,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f827f6224/e310d2764fa94ad3b598abdeb32e7513/FLAG0c0e80a3a [2024-11-19 18:05:10,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f827f6224/e310d2764fa94ad3b598abdeb32e7513 [2024-11-19 18:05:10,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:05:10,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:05:10,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:05:10,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:05:10,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:05:10,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:05:10" (1/1) ... [2024-11-19 18:05:10,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e187064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:10, skipping insertion in model container [2024-11-19 18:05:10,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:05:10" (1/1) ... [2024-11-19 18:05:10,619 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:05:10,805 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label10.c[3658,3671] [2024-11-19 18:05:11,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:05:11,414 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:05:11,431 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label10.c[3658,3671] [2024-11-19 18:05:11,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:05:11,765 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:05:11,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11 WrapperNode [2024-11-19 18:05:11,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:05:11,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:05:11,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:05:11,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:05:11,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:11,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,083 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-19 18:05:12,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:05:12,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:05:12,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:05:12,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:05:12,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,235 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 18:05:12,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:05:12,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:05:12,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:05:12,475 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:05:12,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (1/1) ... [2024-11-19 18:05:12,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:05:12,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:05:12,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 18:05:12,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 18:05:12,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:05:12,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:05:12,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:05:12,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:05:12,597 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:05:12,599 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:05:15,744 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-19 18:05:15,745 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:05:15,770 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:05:15,771 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:05:15,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:05:15 BoogieIcfgContainer [2024-11-19 18:05:15,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:05:15,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:05:15,776 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:05:15,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:05:15,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:05:10" (1/3) ... [2024-11-19 18:05:15,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b89b0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:05:15, skipping insertion in model container [2024-11-19 18:05:15,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:05:11" (2/3) ... [2024-11-19 18:05:15,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b89b0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:05:15, skipping insertion in model container [2024-11-19 18:05:15,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:05:15" (3/3) ... [2024-11-19 18:05:15,781 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label10.c [2024-11-19 18:05:15,793 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:05:15,793 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:05:15,859 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:05:15,863 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;@1e3bfcf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:05:15,863 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:05:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-19 18:05:15,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:15,877 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:15,878 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:15,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash -438767135, now seen corresponding path program 1 times [2024-11-19 18:05:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:15,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668053101] [2024-11-19 18:05:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:15,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:05:16,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:16,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668053101] [2024-11-19 18:05:16,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668053101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:16,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:16,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:05:16,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005550620] [2024-11-19 18:05:16,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:16,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:16,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:16,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:16,143 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:18,815 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-19 18:05:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:18,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-19 18:05:18,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:18,835 INFO L225 Difference]: With dead ends: 2388 [2024-11-19 18:05:18,836 INFO L226 Difference]: Without dead ends: 1506 [2024-11-19 18:05:18,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:18,843 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 870 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:18,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-19 18:05:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-19 18:05:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-19 18:05:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2024-11-19 18:05:18,927 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 27 [2024-11-19 18:05:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:18,928 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2024-11-19 18:05:18,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2024-11-19 18:05:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-19 18:05:18,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:18,932 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:18,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:05:18,933 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:18,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:18,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1051202546, now seen corresponding path program 1 times [2024-11-19 18:05:18,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:18,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110466464] [2024-11-19 18:05:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:18,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:05:19,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:19,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110466464] [2024-11-19 18:05:19,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110466464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:19,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:19,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:05:19,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291618471] [2024-11-19 18:05:19,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:19,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:19,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:19,127 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:21,533 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2024-11-19 18:05:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:21,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-11-19 18:05:21,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:21,541 INFO L225 Difference]: With dead ends: 3761 [2024-11-19 18:05:21,541 INFO L226 Difference]: Without dead ends: 2257 [2024-11-19 18:05:21,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:21,544 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:21,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-19 18:05:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-19 18:05:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2024-11-19 18:05:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2024-11-19 18:05:21,577 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 96 [2024-11-19 18:05:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:21,578 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2024-11-19 18:05:21,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2024-11-19 18:05:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-19 18:05:21,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:21,580 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:21,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:05:21,581 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:21,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2087433101, now seen corresponding path program 1 times [2024-11-19 18:05:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:21,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468930110] [2024-11-19 18:05:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:21,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:05:21,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468930110] [2024-11-19 18:05:21,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468930110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:21,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:21,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775920883] [2024-11-19 18:05:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:21,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:21,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:21,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:21,747 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:24,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:24,076 INFO L93 Difference]: Finished difference Result 6765 states and 9754 transitions. [2024-11-19 18:05:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:24,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-19 18:05:24,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:24,088 INFO L225 Difference]: With dead ends: 6765 [2024-11-19 18:05:24,089 INFO L226 Difference]: Without dead ends: 4510 [2024-11-19 18:05:24,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:24,094 INFO L432 NwaCegarLoop]: 1370 mSDtfsCounter, 729 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:24,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1378 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-19 18:05:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2024-11-19 18:05:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2024-11-19 18:05:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.3714792636948325) internal successors, (6184), 4509 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 6184 transitions. [2024-11-19 18:05:24,172 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 6184 transitions. Word has length 98 [2024-11-19 18:05:24,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:24,173 INFO L471 AbstractCegarLoop]: Abstraction has 4510 states and 6184 transitions. [2024-11-19 18:05:24,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 6184 transitions. [2024-11-19 18:05:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-19 18:05:24,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:24,176 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:24,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:05:24,177 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:24,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:24,177 INFO L85 PathProgramCache]: Analyzing trace with hash -271321694, now seen corresponding path program 1 times [2024-11-19 18:05:24,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:24,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23901422] [2024-11-19 18:05:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:24,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:05:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:24,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23901422] [2024-11-19 18:05:24,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23901422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:24,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048125032] [2024-11-19 18:05:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:24,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:05:24,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:05:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:05:24,391 INFO L87 Difference]: Start difference. First operand 4510 states and 6184 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:27,529 INFO L93 Difference]: Finished difference Result 9769 states and 13273 transitions. [2024-11-19 18:05:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:05:27,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-19 18:05:27,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:27,542 INFO L225 Difference]: With dead ends: 9769 [2024-11-19 18:05:27,542 INFO L226 Difference]: Without dead ends: 5261 [2024-11-19 18:05:27,546 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 [2024-11-19 18:05:27,547 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 2182 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4828 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 5487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 4828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:27,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 240 Invalid, 5487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 4828 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-19 18:05:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2024-11-19 18:05:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2024-11-19 18:05:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.2979087452471483) internal successors, (6827), 5260 states have internal predecessors, (6827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6827 transitions. [2024-11-19 18:05:27,606 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6827 transitions. Word has length 104 [2024-11-19 18:05:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:27,607 INFO L471 AbstractCegarLoop]: Abstraction has 5261 states and 6827 transitions. [2024-11-19 18:05:27,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:27,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6827 transitions. [2024-11-19 18:05:27,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-19 18:05:27,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:27,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:27,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:05:27,612 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:27,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:27,612 INFO L85 PathProgramCache]: Analyzing trace with hash -882153392, now seen corresponding path program 1 times [2024-11-19 18:05:27,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:27,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415004010] [2024-11-19 18:05:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:05:27,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:27,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415004010] [2024-11-19 18:05:27,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415004010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:27,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:27,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:27,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335431570] [2024-11-19 18:05:27,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:27,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:05:27,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:05:27,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:05:27,877 INFO L87 Difference]: Start difference. First operand 5261 states and 6827 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:30,419 INFO L93 Difference]: Finished difference Result 12810 states and 17221 transitions. [2024-11-19 18:05:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:05:30,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2024-11-19 18:05:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:30,436 INFO L225 Difference]: With dead ends: 12810 [2024-11-19 18:05:30,436 INFO L226 Difference]: Without dead ends: 8265 [2024-11-19 18:05:30,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:05:30,440 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:30,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 612 Invalid, 3772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-19 18:05:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8265 states. [2024-11-19 18:05:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 7514. [2024-11-19 18:05:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7513 states have (on average 1.213097298016771) internal successors, (9114), 7513 states have internal predecessors, (9114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 9114 transitions. [2024-11-19 18:05:30,511 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 9114 transitions. Word has length 175 [2024-11-19 18:05:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:30,511 INFO L471 AbstractCegarLoop]: Abstraction has 7514 states and 9114 transitions. [2024-11-19 18:05:30,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 9114 transitions. [2024-11-19 18:05:30,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-19 18:05:30,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:30,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:30,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:05:30,514 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:30,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:30,514 INFO L85 PathProgramCache]: Analyzing trace with hash -52205525, now seen corresponding path program 1 times [2024-11-19 18:05:30,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995123023] [2024-11-19 18:05:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:30,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-19 18:05:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995123023] [2024-11-19 18:05:30,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995123023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:30,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:30,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:05:30,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405063327] [2024-11-19 18:05:30,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:30,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:30,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:30,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:30,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:30,683 INFO L87 Difference]: Start difference. First operand 7514 states and 9114 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:32,842 INFO L93 Difference]: Finished difference Result 18783 states and 23429 transitions. [2024-11-19 18:05:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:32,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-11-19 18:05:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:32,875 INFO L225 Difference]: With dead ends: 18783 [2024-11-19 18:05:32,876 INFO L226 Difference]: Without dead ends: 12022 [2024-11-19 18:05:32,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:32,884 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:32,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 312 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 18:05:32,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12022 states. [2024-11-19 18:05:33,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12022 to 11269. [2024-11-19 18:05:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11269 states, 11268 states have (on average 1.1975505857294995) internal successors, (13494), 11268 states have internal predecessors, (13494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13494 transitions. [2024-11-19 18:05:33,052 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13494 transitions. Word has length 249 [2024-11-19 18:05:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:33,053 INFO L471 AbstractCegarLoop]: Abstraction has 11269 states and 13494 transitions. [2024-11-19 18:05:33,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:33,053 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13494 transitions. [2024-11-19 18:05:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-19 18:05:33,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:33,057 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, 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] [2024-11-19 18:05:33,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:05:33,057 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:33,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash -769657463, now seen corresponding path program 1 times [2024-11-19 18:05:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102571396] [2024-11-19 18:05:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-19 18:05:33,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:33,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102571396] [2024-11-19 18:05:33,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102571396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:33,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:33,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:33,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359266449] [2024-11-19 18:05:33,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:33,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:33,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:33,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:33,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:33,411 INFO L87 Difference]: Start difference. First operand 11269 states and 13494 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:35,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:35,551 INFO L93 Difference]: Finished difference Result 26291 states and 32289 transitions. [2024-11-19 18:05:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:35,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 316 [2024-11-19 18:05:35,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:35,576 INFO L225 Difference]: With dead ends: 26291 [2024-11-19 18:05:35,577 INFO L226 Difference]: Without dead ends: 15775 [2024-11-19 18:05:35,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:35,588 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 829 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:35,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 142 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 18:05:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2024-11-19 18:05:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 15775. [2024-11-19 18:05:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2147838214783822) internal successors, (19162), 15774 states have internal predecessors, (19162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 19162 transitions. [2024-11-19 18:05:35,730 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 19162 transitions. Word has length 316 [2024-11-19 18:05:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:35,731 INFO L471 AbstractCegarLoop]: Abstraction has 15775 states and 19162 transitions. [2024-11-19 18:05:35,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 19162 transitions. [2024-11-19 18:05:35,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-19 18:05:35,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:35,734 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:35,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:05:35,735 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:35,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2137202274, now seen corresponding path program 1 times [2024-11-19 18:05:35,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:35,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382597736] [2024-11-19 18:05:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 74 proven. 108 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-19 18:05:36,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:36,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382597736] [2024-11-19 18:05:36,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382597736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:05:36,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387548646] [2024-11-19 18:05:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:36,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:05:36,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:05:36,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:05:36,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:05:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:36,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:05:36,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:05:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-19 18:05:36,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:05:36,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387548646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:36,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:05:36,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-19 18:05:36,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324414264] [2024-11-19 18:05:36,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:36,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:36,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:05:36,364 INFO L87 Difference]: Start difference. First operand 15775 states and 19162 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:38,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:38,365 INFO L93 Difference]: Finished difference Result 34552 states and 42441 transitions. [2024-11-19 18:05:38,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:38,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 [2024-11-19 18:05:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:38,393 INFO L225 Difference]: With dead ends: 34552 [2024-11-19 18:05:38,393 INFO L226 Difference]: Without dead ends: 19530 [2024-11-19 18:05:38,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:05:38,409 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 763 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:38,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 238 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-19 18:05:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19530 states. [2024-11-19 18:05:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19530 to 19530. [2024-11-19 18:05:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19530 states, 19529 states have (on average 1.2128629218085925) internal successors, (23686), 19529 states have internal predecessors, (23686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19530 states to 19530 states and 23686 transitions. [2024-11-19 18:05:38,584 INFO L78 Accepts]: Start accepts. Automaton has 19530 states and 23686 transitions. Word has length 345 [2024-11-19 18:05:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:38,585 INFO L471 AbstractCegarLoop]: Abstraction has 19530 states and 23686 transitions. [2024-11-19 18:05:38,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 19530 states and 23686 transitions. [2024-11-19 18:05:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-11-19 18:05:38,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:38,592 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:38,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 18:05:38,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:05:38,793 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:38,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:38,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1315212118, now seen corresponding path program 1 times [2024-11-19 18:05:38,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:38,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557529970] [2024-11-19 18:05:38,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:38,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-19 18:05:39,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:39,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557529970] [2024-11-19 18:05:39,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557529970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:39,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:39,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:39,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958962198] [2024-11-19 18:05:39,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:39,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:39,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:39,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:39,094 INFO L87 Difference]: Start difference. First operand 19530 states and 23686 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:41,195 INFO L93 Difference]: Finished difference Result 48070 states and 58712 transitions. [2024-11-19 18:05:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:41,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2024-11-19 18:05:41,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:41,231 INFO L225 Difference]: With dead ends: 48070 [2024-11-19 18:05:41,231 INFO L226 Difference]: Without dead ends: 29293 [2024-11-19 18:05:41,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:41,253 INFO L432 NwaCegarLoop]: 1239 mSDtfsCounter, 636 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:41,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1246 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 18:05:41,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2024-11-19 18:05:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 28542. [2024-11-19 18:05:41,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28542 states, 28541 states have (on average 1.2074559405767142) internal successors, (34462), 28541 states have internal predecessors, (34462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28542 states to 28542 states and 34462 transitions. [2024-11-19 18:05:41,684 INFO L78 Accepts]: Start accepts. Automaton has 28542 states and 34462 transitions. Word has length 354 [2024-11-19 18:05:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:41,685 INFO L471 AbstractCegarLoop]: Abstraction has 28542 states and 34462 transitions. [2024-11-19 18:05:41,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 28542 states and 34462 transitions. [2024-11-19 18:05:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-19 18:05:41,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:41,693 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:41,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 18:05:41,694 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:41,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:41,694 INFO L85 PathProgramCache]: Analyzing trace with hash -959516428, now seen corresponding path program 1 times [2024-11-19 18:05:41,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:41,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111707831] [2024-11-19 18:05:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:41,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-19 18:05:42,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:42,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111707831] [2024-11-19 18:05:42,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111707831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:42,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:42,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:42,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46983391] [2024-11-19 18:05:42,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:42,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:42,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:42,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:42,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:42,083 INFO L87 Difference]: Start difference. First operand 28542 states and 34462 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:44,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:44,199 INFO L93 Difference]: Finished difference Result 57082 states and 68925 transitions. [2024-11-19 18:05:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2024-11-19 18:05:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:44,227 INFO L225 Difference]: With dead ends: 57082 [2024-11-19 18:05:44,228 INFO L226 Difference]: Without dead ends: 29293 [2024-11-19 18:05:44,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:44,242 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 752 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:44,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 367 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 18:05:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29293 states. [2024-11-19 18:05:44,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29293 to 27791. [2024-11-19 18:05:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27791 states, 27790 states have (on average 1.1928031666066932) internal successors, (33148), 27790 states have internal predecessors, (33148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27791 states to 27791 states and 33148 transitions. [2024-11-19 18:05:44,497 INFO L78 Accepts]: Start accepts. Automaton has 27791 states and 33148 transitions. Word has length 358 [2024-11-19 18:05:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:44,497 INFO L471 AbstractCegarLoop]: Abstraction has 27791 states and 33148 transitions. [2024-11-19 18:05:44,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 27791 states and 33148 transitions. [2024-11-19 18:05:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-19 18:05:44,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:44,502 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:44,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:05:44,503 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:44,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:44,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1863064843, now seen corresponding path program 1 times [2024-11-19 18:05:44,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:44,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612945829] [2024-11-19 18:05:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:44,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-19 18:05:44,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:44,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612945829] [2024-11-19 18:05:44,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612945829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:44,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:44,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:44,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718976721] [2024-11-19 18:05:44,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:44,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:44,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:44,736 INFO L87 Difference]: Start difference. First operand 27791 states and 33148 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:47,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:47,080 INFO L93 Difference]: Finished difference Result 75857 states and 91606 transitions. [2024-11-19 18:05:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:47,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 413 [2024-11-19 18:05:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:47,126 INFO L225 Difference]: With dead ends: 75857 [2024-11-19 18:05:47,126 INFO L226 Difference]: Without dead ends: 48819 [2024-11-19 18:05:47,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:47,141 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 703 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:47,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 529 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 18:05:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48819 states. [2024-11-19 18:05:47,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48819 to 47317. [2024-11-19 18:05:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47317 states, 47316 states have (on average 1.1756910981486177) internal successors, (55629), 47316 states have internal predecessors, (55629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47317 states to 47317 states and 55629 transitions. [2024-11-19 18:05:47,663 INFO L78 Accepts]: Start accepts. Automaton has 47317 states and 55629 transitions. Word has length 413 [2024-11-19 18:05:47,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:47,664 INFO L471 AbstractCegarLoop]: Abstraction has 47317 states and 55629 transitions. [2024-11-19 18:05:47,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:47,664 INFO L276 IsEmpty]: Start isEmpty. Operand 47317 states and 55629 transitions. [2024-11-19 18:05:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-19 18:05:47,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:47,677 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:47,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 18:05:47,678 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:47,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:47,678 INFO L85 PathProgramCache]: Analyzing trace with hash 932015733, now seen corresponding path program 1 times [2024-11-19 18:05:47,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:47,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228866821] [2024-11-19 18:05:47,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:47,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 18:05:48,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:48,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228866821] [2024-11-19 18:05:48,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228866821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:48,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:48,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:48,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184959816] [2024-11-19 18:05:48,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:48,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:48,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:48,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:48,041 INFO L87 Difference]: Start difference. First operand 47317 states and 55629 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:50,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:50,358 INFO L93 Difference]: Finished difference Result 134435 states and 158813 transitions. [2024-11-19 18:05:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:50,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 512 [2024-11-19 18:05:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:50,448 INFO L225 Difference]: With dead ends: 134435 [2024-11-19 18:05:50,448 INFO L226 Difference]: Without dead ends: 87871 [2024-11-19 18:05:50,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:50,472 INFO L432 NwaCegarLoop]: 1255 mSDtfsCounter, 560 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:50,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1262 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 18:05:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87871 states. [2024-11-19 18:05:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87871 to 84116. [2024-11-19 18:05:51,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84116 states, 84115 states have (on average 1.131736313380491) internal successors, (95196), 84115 states have internal predecessors, (95196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:51,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 95196 transitions. [2024-11-19 18:05:51,334 INFO L78 Accepts]: Start accepts. Automaton has 84116 states and 95196 transitions. Word has length 512 [2024-11-19 18:05:51,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:51,335 INFO L471 AbstractCegarLoop]: Abstraction has 84116 states and 95196 transitions. [2024-11-19 18:05:51,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:51,335 INFO L276 IsEmpty]: Start isEmpty. Operand 84116 states and 95196 transitions. [2024-11-19 18:05:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-11-19 18:05:51,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:51,347 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:51,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 18:05:51,347 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:51,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:51,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1498649070, now seen corresponding path program 1 times [2024-11-19 18:05:51,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:51,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050836893] [2024-11-19 18:05:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:51,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-19 18:05:51,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:51,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050836893] [2024-11-19 18:05:51,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050836893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:51,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:51,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:51,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173431010] [2024-11-19 18:05:51,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:51,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:51,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:51,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:51,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:51,766 INFO L87 Difference]: Start difference. First operand 84116 states and 95196 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:54,085 INFO L93 Difference]: Finished difference Result 186254 states and 210762 transitions. [2024-11-19 18:05:54,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:54,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 513 [2024-11-19 18:05:54,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:54,188 INFO L225 Difference]: With dead ends: 186254 [2024-11-19 18:05:54,188 INFO L226 Difference]: Without dead ends: 102891 [2024-11-19 18:05:54,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:54,231 INFO L432 NwaCegarLoop]: 1109 mSDtfsCounter, 847 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:54,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1117 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-19 18:05:54,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102891 states. [2024-11-19 18:05:55,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102891 to 102891. [2024-11-19 18:05:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102891 states, 102890 states have (on average 1.118825930605501) internal successors, (115116), 102890 states have internal predecessors, (115116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:55,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102891 states to 102891 states and 115116 transitions. [2024-11-19 18:05:55,364 INFO L78 Accepts]: Start accepts. Automaton has 102891 states and 115116 transitions. Word has length 513 [2024-11-19 18:05:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:05:55,364 INFO L471 AbstractCegarLoop]: Abstraction has 102891 states and 115116 transitions. [2024-11-19 18:05:55,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 102891 states and 115116 transitions. [2024-11-19 18:05:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-11-19 18:05:55,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:05:55,377 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:05:55,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:05:55,377 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:05:55,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:05:55,378 INFO L85 PathProgramCache]: Analyzing trace with hash 112580126, now seen corresponding path program 1 times [2024-11-19 18:05:55,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:05:55,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544247467] [2024-11-19 18:05:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:05:55,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:05:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:05:56,122 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-19 18:05:56,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:05:56,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544247467] [2024-11-19 18:05:56,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544247467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:05:56,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:05:56,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:05:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324464981] [2024-11-19 18:05:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:05:56,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:05:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:05:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:05:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:56,124 INFO L87 Difference]: Start difference. First operand 102891 states and 115116 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:05:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:05:58,765 INFO L93 Difference]: Finished difference Result 248587 states and 280527 transitions. [2024-11-19 18:05:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:05:58,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 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 569 [2024-11-19 18:05:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:05:58,914 INFO L225 Difference]: With dead ends: 248587 [2024-11-19 18:05:58,914 INFO L226 Difference]: Without dead ends: 141192 [2024-11-19 18:05:58,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:05:58,940 INFO L432 NwaCegarLoop]: 1292 mSDtfsCounter, 585 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:05:58,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1300 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 18:05:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141192 states. [2024-11-19 18:06:00,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141192 to 138939. [2024-11-19 18:06:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138939 states, 138938 states have (on average 1.1025349436439276) internal successors, (153184), 138938 states have internal predecessors, (153184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:00,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138939 states to 138939 states and 153184 transitions. [2024-11-19 18:06:00,501 INFO L78 Accepts]: Start accepts. Automaton has 138939 states and 153184 transitions. Word has length 569 [2024-11-19 18:06:00,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:06:00,501 INFO L471 AbstractCegarLoop]: Abstraction has 138939 states and 153184 transitions. [2024-11-19 18:06:00,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:00,501 INFO L276 IsEmpty]: Start isEmpty. Operand 138939 states and 153184 transitions. [2024-11-19 18:06:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2024-11-19 18:06:00,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:06:00,519 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:06:00,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 18:06:00,520 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:06:00,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:06:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1411609590, now seen corresponding path program 1 times [2024-11-19 18:06:00,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:06:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022861458] [2024-11-19 18:06:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:06:00,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:06:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:06:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 636 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-19 18:06:01,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:06:01,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022861458] [2024-11-19 18:06:01,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022861458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:06:01,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:06:01,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:06:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528445325] [2024-11-19 18:06:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:06:01,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:06:01,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:06:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:06:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:06:01,005 INFO L87 Difference]: Start difference. First operand 138939 states and 153184 transitions. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:06:03,813 INFO L93 Difference]: Finished difference Result 317679 states and 350381 transitions. [2024-11-19 18:06:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:06:03,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 651 [2024-11-19 18:06:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:06:04,033 INFO L225 Difference]: With dead ends: 317679 [2024-11-19 18:06:04,033 INFO L226 Difference]: Without dead ends: 179493 [2024-11-19 18:06:04,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:06:04,095 INFO L432 NwaCegarLoop]: 1278 mSDtfsCounter, 664 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:06:04,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1285 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 18:06:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179493 states. [2024-11-19 18:06:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179493 to 174236. [2024-11-19 18:06:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174236 states, 174235 states have (on average 1.0865153384796395) internal successors, (189309), 174235 states have internal predecessors, (189309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174236 states to 174236 states and 189309 transitions. [2024-11-19 18:06:06,363 INFO L78 Accepts]: Start accepts. Automaton has 174236 states and 189309 transitions. Word has length 651 [2024-11-19 18:06:06,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:06:06,363 INFO L471 AbstractCegarLoop]: Abstraction has 174236 states and 189309 transitions. [2024-11-19 18:06:06,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 174236 states and 189309 transitions. [2024-11-19 18:06:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2024-11-19 18:06:06,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:06:06,380 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:06:06,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 18:06:06,380 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:06:06,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:06:06,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1505451958, now seen corresponding path program 1 times [2024-11-19 18:06:06,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:06:06,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630164342] [2024-11-19 18:06:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:06:06,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:06:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:06:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-19 18:06:06,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:06:06,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630164342] [2024-11-19 18:06:06,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630164342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:06:06,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:06:06,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:06:06,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243996429] [2024-11-19 18:06:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:06:06,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:06:06,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:06:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:06:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:06:06,994 INFO L87 Difference]: Start difference. First operand 174236 states and 189309 transitions. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:09,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:06:09,861 INFO L93 Difference]: Finished difference Result 347719 states and 377860 transitions. [2024-11-19 18:06:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:06:09,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 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 651 [2024-11-19 18:06:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:06:10,051 INFO L225 Difference]: With dead ends: 347719 [2024-11-19 18:06:10,052 INFO L226 Difference]: Without dead ends: 174236 [2024-11-19 18:06:10,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:06:10,116 INFO L432 NwaCegarLoop]: 1262 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:06:10,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1270 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-19 18:06:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174236 states. [2024-11-19 18:06:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174236 to 171232. [2024-11-19 18:06:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171232 states, 171231 states have (on average 1.0682469879869883) internal successors, (182917), 171231 states have internal predecessors, (182917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171232 states to 171232 states and 182917 transitions. [2024-11-19 18:06:12,265 INFO L78 Accepts]: Start accepts. Automaton has 171232 states and 182917 transitions. Word has length 651 [2024-11-19 18:06:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:06:12,266 INFO L471 AbstractCegarLoop]: Abstraction has 171232 states and 182917 transitions. [2024-11-19 18:06:12,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 171232 states and 182917 transitions. [2024-11-19 18:06:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2024-11-19 18:06:12,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:06:12,300 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:06:12,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:06:12,300 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:06:12,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:06:12,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2099495311, now seen corresponding path program 1 times [2024-11-19 18:06:12,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:06:12,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873730124] [2024-11-19 18:06:12,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:06:12,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:06:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:06:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 339 proven. 416 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-19 18:06:13,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:06:13,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873730124] [2024-11-19 18:06:13,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873730124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:06:13,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123533443] [2024-11-19 18:06:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:06:13,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:06:13,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:06:13,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:06:13,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:06:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:06:13,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:06:13,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:06:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-19 18:06:14,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:06:14,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123533443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:06:14,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:06:14,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-19 18:06:14,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938182434] [2024-11-19 18:06:14,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:06:14,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:06:14,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:06:14,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:06:14,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:06:14,415 INFO L87 Difference]: Start difference. First operand 171232 states and 182917 transitions. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:16,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:06:16,899 INFO L93 Difference]: Finished difference Result 343213 states and 366590 transitions. [2024-11-19 18:06:16,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:06:16,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 709 [2024-11-19 18:06:16,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:06:17,093 INFO L225 Difference]: With dead ends: 343213 [2024-11-19 18:06:17,093 INFO L226 Difference]: Without dead ends: 171232 [2024-11-19 18:06:17,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:06:17,162 INFO L432 NwaCegarLoop]: 1373 mSDtfsCounter, 489 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:06:17,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1381 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:06:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171232 states. [2024-11-19 18:06:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171232 to 169730. [2024-11-19 18:06:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169730 states, 169729 states have (on average 1.05812795691956) internal successors, (179595), 169729 states have internal predecessors, (179595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169730 states to 169730 states and 179595 transitions. [2024-11-19 18:06:19,198 INFO L78 Accepts]: Start accepts. Automaton has 169730 states and 179595 transitions. Word has length 709 [2024-11-19 18:06:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:06:19,198 INFO L471 AbstractCegarLoop]: Abstraction has 169730 states and 179595 transitions. [2024-11-19 18:06:19,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 169730 states and 179595 transitions. [2024-11-19 18:06:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2024-11-19 18:06:19,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:06:19,223 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:06:19,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 18:06:19,423 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,SelfDestructingSolverStorable16 [2024-11-19 18:06:19,424 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:06:19,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:06:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash 571713711, now seen corresponding path program 1 times [2024-11-19 18:06:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:06:19,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681594902] [2024-11-19 18:06:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:06:19,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:06:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:06:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 508 proven. 25 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-19 18:06:21,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:06:21,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681594902] [2024-11-19 18:06:21,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681594902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:06:21,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351583850] [2024-11-19 18:06:21,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:06:21,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:06:21,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:06:21,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:06:21,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 18:06:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:06:21,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:06:21,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:06:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-19 18:06:21,737 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:06:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351583850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:06:21,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:06:21,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 18:06:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549657754] [2024-11-19 18:06:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:06:21,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:06:21,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:06:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:06:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:06:21,739 INFO L87 Difference]: Start difference. First operand 169730 states and 179595 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:06:23,955 INFO L93 Difference]: Finished difference Result 340960 states and 360725 transitions. [2024-11-19 18:06:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:06:23,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 726 [2024-11-19 18:06:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:06:24,136 INFO L225 Difference]: With dead ends: 340960 [2024-11-19 18:06:24,136 INFO L226 Difference]: Without dead ends: 168979 [2024-11-19 18:06:24,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:06:24,215 INFO L432 NwaCegarLoop]: 1342 mSDtfsCounter, 492 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:06:24,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1350 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:06:24,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168979 states. [2024-11-19 18:06:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168979 to 167477. [2024-11-19 18:06:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167477 states, 167476 states have (on average 1.0556796197664142) internal successors, (176801), 167476 states have internal predecessors, (176801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167477 states to 167477 states and 176801 transitions. [2024-11-19 18:06:26,297 INFO L78 Accepts]: Start accepts. Automaton has 167477 states and 176801 transitions. Word has length 726 [2024-11-19 18:06:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:06:26,298 INFO L471 AbstractCegarLoop]: Abstraction has 167477 states and 176801 transitions. [2024-11-19 18:06:26,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 167477 states and 176801 transitions. [2024-11-19 18:06:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2024-11-19 18:06:26,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:06:26,325 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:06:26,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 18:06:26,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 18:06:26,526 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:06:26,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:06:26,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1445452210, now seen corresponding path program 1 times [2024-11-19 18:06:26,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:06:26,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688398881] [2024-11-19 18:06:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:06:26,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:06:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:06:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-19 18:06:27,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:06:27,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688398881] [2024-11-19 18:06:27,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688398881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:06:27,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:06:27,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:06:27,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637939595] [2024-11-19 18:06:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:06:27,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:06:27,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:06:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:06:27,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:06:27,840 INFO L87 Difference]: Start difference. First operand 167477 states and 176801 transitions. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:06:30,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:06:30,991 INFO L93 Difference]: Finished difference Result 334601 states and 353244 transitions. [2024-11-19 18:06:30,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 18:06:30,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 755 [2024-11-19 18:06:30,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted.