./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/Problem17_label09.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/Problem17_label09.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 7e1c4d2c7e091760d0cfd2192761696664946c8a36300f0a25d92c3977c93680 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:29:08,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:29:08,540 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:29:08,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:29:08,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:29:08,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:29:08,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:29:08,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:29:08,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:29:08,581 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:29:08,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:29:08,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:29:08,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:29:08,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:29:08,584 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:29:08,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:29:08,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:29:08,585 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:29:08,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:29:08,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:29:08,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:29:08,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:29:08,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:29:08,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:29:08,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:29:08,591 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:29:08,591 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:29:08,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:29:08,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:29:08,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:29:08,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:29:08,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:29:08,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:29:08,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:29:08,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:29:08,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:29:08,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:29:08,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:29:08,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:29:08,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:29:08,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:29:08,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:29:08,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e1c4d2c7e091760d0cfd2192761696664946c8a36300f0a25d92c3977c93680 [2024-11-19 18:29:08,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:29:08,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:29:08,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:29:08,887 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:29:08,888 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:29:08,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label09.c [2024-11-19 18:29:10,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:29:10,804 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:29:10,805 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label09.c [2024-11-19 18:29:10,831 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81443e07f/b3c87b297d01449899978c4201d90b68/FLAG5b2cd648a [2024-11-19 18:29:10,847 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81443e07f/b3c87b297d01449899978c4201d90b68 [2024-11-19 18:29:10,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:29:10,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:29:10,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:29:10,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:29:10,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:29:10,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:29:10" (1/1) ... [2024-11-19 18:29:10,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692393c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:10, skipping insertion in model container [2024-11-19 18:29:10,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:29:10" (1/1) ... [2024-11-19 18:29:10,942 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:29:11,165 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/Problem17_label09.c[1938,1951] [2024-11-19 18:29:11,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:29:11,701 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:29:11,717 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/Problem17_label09.c[1938,1951] [2024-11-19 18:29:11,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:29:11,988 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:29:11,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11 WrapperNode [2024-11-19 18:29:11,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:29:11,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:29:11,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:29:11,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:29:11,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,328 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-19 18:29:12,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:29:12,329 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:29:12,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:29:12,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:29:12,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,541 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 18:29:12,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:29:12,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:29:12,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:29:12,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:29:12,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (1/1) ... [2024-11-19 18:29:12,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:29:12,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:29:12,864 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 18:29:12,869 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 18:29:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:29:12,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:29:12,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:29:12,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:29:12,965 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:29:12,967 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:29:16,103 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-19 18:29:16,103 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:29:16,139 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:29:16,143 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:29:16,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:29:16 BoogieIcfgContainer [2024-11-19 18:29:16,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:29:16,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:29:16,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:29:16,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:29:16,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:29:10" (1/3) ... [2024-11-19 18:29:16,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd62e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:29:16, skipping insertion in model container [2024-11-19 18:29:16,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:29:11" (2/3) ... [2024-11-19 18:29:16,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd62e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:29:16, skipping insertion in model container [2024-11-19 18:29:16,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:29:16" (3/3) ... [2024-11-19 18:29:16,154 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label09.c [2024-11-19 18:29:16,171 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:29:16,171 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:29:16,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:29:16,248 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;@7c6641b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:29:16,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:29:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 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 18:29:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 18:29:16,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:16,263 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:29:16,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:16,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:16,269 INFO L85 PathProgramCache]: Analyzing trace with hash -569068670, now seen corresponding path program 1 times [2024-11-19 18:29:16,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:16,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711362790] [2024-11-19 18:29:16,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:16,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:16,504 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 18:29:16,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:16,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711362790] [2024-11-19 18:29:16,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711362790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:16,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:16,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:29:16,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086334652] [2024-11-19 18:29:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:16,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:16,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:16,539 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 18:29:19,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:19,019 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2024-11-19 18:29:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:19,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-19 18:29:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:19,038 INFO L225 Difference]: With dead ends: 1667 [2024-11-19 18:29:19,038 INFO L226 Difference]: Without dead ends: 998 [2024-11-19 18:29:19,043 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 18:29:19,046 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 533 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:19,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-19 18:29:19,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-19 18:29:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2024-11-19 18:29:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 0 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 18:29:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2024-11-19 18:29:19,137 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 12 [2024-11-19 18:29:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:19,137 INFO L471 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2024-11-19 18:29:19,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 18:29:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2024-11-19 18:29:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-19 18:29:19,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:19,140 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:29:19,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:29:19,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:19,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1540663647, now seen corresponding path program 1 times [2024-11-19 18:29:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:19,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000623957] [2024-11-19 18:29:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:19,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:29:19,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000623957] [2024-11-19 18:29:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000623957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:19,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:19,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:29:19,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125752169] [2024-11-19 18:29:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:19,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:19,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:19,442 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:29:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:21,569 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2024-11-19 18:29:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:21,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-11-19 18:29:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:21,578 INFO L225 Difference]: With dead ends: 2841 [2024-11-19 18:29:21,578 INFO L226 Difference]: Without dead ends: 1861 [2024-11-19 18:29:21,580 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 18:29:21,582 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:21,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 18:29:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-19 18:29:21,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2024-11-19 18:29:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 0 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 18:29:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2024-11-19 18:29:21,620 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 77 [2024-11-19 18:29:21,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:21,622 INFO L471 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2024-11-19 18:29:21,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:29:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2024-11-19 18:29:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 18:29:21,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:21,628 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 18:29:21,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:29:21,629 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:21,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash 463540948, now seen corresponding path program 1 times [2024-11-19 18:29:21,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:21,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033285589] [2024-11-19 18:29:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:21,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:29:21,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:21,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033285589] [2024-11-19 18:29:21,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033285589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:21,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:21,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:29:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405334463] [2024-11-19 18:29:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:21,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:21,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:21,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:21,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:21,997 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 18:29:24,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:24,111 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2024-11-19 18:29:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:24,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-11-19 18:29:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:24,126 INFO L225 Difference]: With dead ends: 4591 [2024-11-19 18:29:24,126 INFO L226 Difference]: Without dead ends: 2736 [2024-11-19 18:29:24,131 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 18:29:24,131 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:24,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 18:29:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-19 18:29:24,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2024-11-19 18:29:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 0 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 18:29:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2024-11-19 18:29:24,181 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 117 [2024-11-19 18:29:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:24,183 INFO L471 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2024-11-19 18:29:24,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 18:29:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2024-11-19 18:29:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-19 18:29:24,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:24,187 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 18:29:24,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:29:24,187 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:24,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1189236261, now seen corresponding path program 1 times [2024-11-19 18:29:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241995060] [2024-11-19 18:29:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:29:24,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:24,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241995060] [2024-11-19 18:29:24,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241995060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:24,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:24,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:29:24,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521034953] [2024-11-19 18:29:24,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:24,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:24,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:24,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:24,438 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:29:26,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:26,071 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2024-11-19 18:29:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:26,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2024-11-19 18:29:26,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:26,086 INFO L225 Difference]: With dead ends: 6709 [2024-11-19 18:29:26,086 INFO L226 Difference]: Without dead ends: 3995 [2024-11-19 18:29:26,089 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 18:29:26,091 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:26,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:29:26,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-19 18:29:26,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2024-11-19 18:29:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 0 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 18:29:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2024-11-19 18:29:26,145 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 123 [2024-11-19 18:29:26,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:26,147 INFO L471 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2024-11-19 18:29:26,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:29:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2024-11-19 18:29:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-19 18:29:26,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:26,151 INFO L215 NwaCegarLoop]: trace histogram [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, 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 18:29:26,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:29:26,152 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:26,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash -604395729, now seen corresponding path program 1 times [2024-11-19 18:29:26,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:26,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364439760] [2024-11-19 18:29:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:26,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:29:26,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:26,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364439760] [2024-11-19 18:29:26,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364439760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:26,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:26,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 18:29:26,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139591691] [2024-11-19 18:29:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:26,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 18:29:26,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 18:29:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:29:26,540 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 18:29:29,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:29,112 INFO L93 Difference]: Finished difference Result 8005 states and 10508 transitions. [2024-11-19 18:29:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:29:29,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2024-11-19 18:29:29,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:29,128 INFO L225 Difference]: With dead ends: 8005 [2024-11-19 18:29:29,128 INFO L226 Difference]: Without dead ends: 4865 [2024-11-19 18:29:29,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:29:29,133 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1089 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:29,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 894 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-19 18:29:29,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2024-11-19 18:29:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4852. [2024-11-19 18:29:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 0 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 18:29:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2024-11-19 18:29:29,204 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 160 [2024-11-19 18:29:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:29,205 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2024-11-19 18:29:29,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 18:29:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2024-11-19 18:29:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-19 18:29:29,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:29,208 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:29:29,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:29:29,209 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:29,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash -714630880, now seen corresponding path program 1 times [2024-11-19 18:29:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:29,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847897726] [2024-11-19 18:29:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:29,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-19 18:29:29,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:29,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847897726] [2024-11-19 18:29:29,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847897726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:29,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:29,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:29:29,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153302119] [2024-11-19 18:29:29,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:29,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:29,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:29,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:29,364 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 18:29:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:31,172 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2024-11-19 18:29:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 166 [2024-11-19 18:29:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:31,193 INFO L225 Difference]: With dead ends: 12249 [2024-11-19 18:29:31,194 INFO L226 Difference]: Without dead ends: 7399 [2024-11-19 18:29:31,199 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 18:29:31,201 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 436 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:31,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 18:29:31,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2024-11-19 18:29:31,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2024-11-19 18:29:31,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 0 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 18:29:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2024-11-19 18:29:31,294 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 166 [2024-11-19 18:29:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:31,294 INFO L471 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2024-11-19 18:29:31,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 18:29:31,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2024-11-19 18:29:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-19 18:29:31,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:31,296 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:29:31,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:29:31,297 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:31,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1628723596, now seen corresponding path program 1 times [2024-11-19 18:29:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:31,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750956407] [2024-11-19 18:29:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:31,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:29:31,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750956407] [2024-11-19 18:29:31,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750956407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:31,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:31,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:29:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654761578] [2024-11-19 18:29:31,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:31,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:31,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:31,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:31,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:31,447 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 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 18:29:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:33,180 INFO L93 Difference]: Finished difference Result 12204 states and 15757 transitions. [2024-11-19 18:29:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:33,181 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 179 [2024-11-19 18:29:33,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:33,203 INFO L225 Difference]: With dead ends: 12204 [2024-11-19 18:29:33,203 INFO L226 Difference]: Without dead ends: 7380 [2024-11-19 18:29:33,210 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 18:29:33,211 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 460 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:33,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 511 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 18:29:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7380 states. [2024-11-19 18:29:33,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 6525. [2024-11-19 18:29:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6525 states, 6524 states have (on average 1.2665542611894542) internal successors, (8263), 6524 states have internal predecessors, (8263), 0 states have call successors, (0), 0 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 18:29:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6525 states to 6525 states and 8263 transitions. [2024-11-19 18:29:33,314 INFO L78 Accepts]: Start accepts. Automaton has 6525 states and 8263 transitions. Word has length 179 [2024-11-19 18:29:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:33,315 INFO L471 AbstractCegarLoop]: Abstraction has 6525 states and 8263 transitions. [2024-11-19 18:29:33,315 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 18:29:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 6525 states and 8263 transitions. [2024-11-19 18:29:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-19 18:29:33,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:33,318 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:29:33,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:29:33,319 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:33,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash 456712304, now seen corresponding path program 1 times [2024-11-19 18:29:33,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:33,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151384669] [2024-11-19 18:29:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:33,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:29:33,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:33,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151384669] [2024-11-19 18:29:33,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151384669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:33,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:33,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:29:33,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106105166] [2024-11-19 18:29:33,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:33,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:33,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:33,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:33,571 INFO L87 Difference]: Start difference. First operand 6525 states and 8263 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 18:29:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:35,402 INFO L93 Difference]: Finished difference Result 17751 states and 22351 transitions. [2024-11-19 18:29:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 228 [2024-11-19 18:29:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:35,429 INFO L225 Difference]: With dead ends: 17751 [2024-11-19 18:29:35,430 INFO L226 Difference]: Without dead ends: 9951 [2024-11-19 18:29:35,438 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 18:29:35,439 INFO L432 NwaCegarLoop]: 946 mSDtfsCounter, 488 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:35,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1019 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 18:29:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9951 states. [2024-11-19 18:29:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9951 to 9943. [2024-11-19 18:29:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9943 states, 9942 states have (on average 1.208006437336552) internal successors, (12010), 9942 states have internal predecessors, (12010), 0 states have call successors, (0), 0 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 18:29:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9943 states to 9943 states and 12010 transitions. [2024-11-19 18:29:35,592 INFO L78 Accepts]: Start accepts. Automaton has 9943 states and 12010 transitions. Word has length 228 [2024-11-19 18:29:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:35,593 INFO L471 AbstractCegarLoop]: Abstraction has 9943 states and 12010 transitions. [2024-11-19 18:29:35,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 18:29:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 9943 states and 12010 transitions. [2024-11-19 18:29:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-19 18:29:35,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:35,596 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:29:35,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 18:29:35,596 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:35,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:35,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1907858662, now seen corresponding path program 1 times [2024-11-19 18:29:35,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:35,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596848648] [2024-11-19 18:29:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:35,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:29:35,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:35,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596848648] [2024-11-19 18:29:35,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596848648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:35,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:35,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:29:35,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243858194] [2024-11-19 18:29:35,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:35,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:35,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:35,916 INFO L87 Difference]: Start difference. First operand 9943 states and 12010 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 18:29:37,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:37,737 INFO L93 Difference]: Finished difference Result 20736 states and 24968 transitions. [2024-11-19 18:29:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 232 [2024-11-19 18:29:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:37,758 INFO L225 Difference]: With dead ends: 20736 [2024-11-19 18:29:37,758 INFO L226 Difference]: Without dead ends: 10795 [2024-11-19 18:29:37,769 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 18:29:37,770 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 418 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:37,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 985 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 18:29:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10795 states. [2024-11-19 18:29:37,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10795 to 10369. [2024-11-19 18:29:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10369 states, 10368 states have (on average 1.2040895061728396) internal successors, (12484), 10368 states have internal predecessors, (12484), 0 states have call successors, (0), 0 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 18:29:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10369 states to 10369 states and 12484 transitions. [2024-11-19 18:29:37,905 INFO L78 Accepts]: Start accepts. Automaton has 10369 states and 12484 transitions. Word has length 232 [2024-11-19 18:29:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:37,905 INFO L471 AbstractCegarLoop]: Abstraction has 10369 states and 12484 transitions. [2024-11-19 18:29:37,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 18:29:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10369 states and 12484 transitions. [2024-11-19 18:29:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-19 18:29:37,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:37,909 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:29:37,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 18:29:37,910 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:37,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash 724784780, now seen corresponding path program 1 times [2024-11-19 18:29:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272305886] [2024-11-19 18:29:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 158 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 18:29:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272305886] [2024-11-19 18:29:38,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272305886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:29:38,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999499896] [2024-11-19 18:29:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:38,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:29:38,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:29:38,391 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 18:29:38,392 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 18:29:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:38,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 18:29:38,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:29:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 158 proven. 70 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 18:29:38,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:29:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 18:29:39,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999499896] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 18:29:39,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 18:29:39,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-19 18:29:39,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903655418] [2024-11-19 18:29:39,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:39,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:29:39,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:39,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:29:39,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:29:39,084 INFO L87 Difference]: Start difference. First operand 10369 states and 12484 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 18:29:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:41,874 INFO L93 Difference]: Finished difference Result 30985 states and 37761 transitions. [2024-11-19 18:29:41,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:29:41,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2024-11-19 18:29:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:41,905 INFO L225 Difference]: With dead ends: 30985 [2024-11-19 18:29:41,905 INFO L226 Difference]: Without dead ends: 19753 [2024-11-19 18:29:41,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:29:41,917 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 908 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:41,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 157 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-19 18:29:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19753 states. [2024-11-19 18:29:42,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19753 to 19752. [2024-11-19 18:29:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19752 states, 19751 states have (on average 1.158321097665941) internal successors, (22878), 19751 states have internal predecessors, (22878), 0 states have call successors, (0), 0 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 18:29:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19752 states to 19752 states and 22878 transitions. [2024-11-19 18:29:42,131 INFO L78 Accepts]: Start accepts. Automaton has 19752 states and 22878 transitions. Word has length 236 [2024-11-19 18:29:42,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:42,131 INFO L471 AbstractCegarLoop]: Abstraction has 19752 states and 22878 transitions. [2024-11-19 18:29:42,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 18:29:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand 19752 states and 22878 transitions. [2024-11-19 18:29:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-19 18:29:42,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:42,136 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:29:42,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 18:29:42,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 18:29:42,337 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:42,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1956249984, now seen corresponding path program 1 times [2024-11-19 18:29:42,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:42,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719751418] [2024-11-19 18:29:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:42,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-19 18:29:42,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:42,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719751418] [2024-11-19 18:29:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719751418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:42,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:42,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:29:42,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371468118] [2024-11-19 18:29:42,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:42,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:42,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:42,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:42,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:42,502 INFO L87 Difference]: Start difference. First operand 19752 states and 22878 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:29:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:44,080 INFO L93 Difference]: Finished difference Result 42479 states and 49308 transitions. [2024-11-19 18:29:44,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:44,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2024-11-19 18:29:44,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:44,114 INFO L225 Difference]: With dead ends: 42479 [2024-11-19 18:29:44,115 INFO L226 Difference]: Without dead ends: 22729 [2024-11-19 18:29:44,128 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 18:29:44,128 INFO L432 NwaCegarLoop]: 790 mSDtfsCounter, 378 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:44,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 856 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:29:44,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22729 states. [2024-11-19 18:29:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22729 to 22303. [2024-11-19 18:29:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22303 states, 22302 states have (on average 1.1478342749529191) internal successors, (25599), 22302 states have internal predecessors, (25599), 0 states have call successors, (0), 0 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 18:29:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22303 states to 22303 states and 25599 transitions. [2024-11-19 18:29:44,348 INFO L78 Accepts]: Start accepts. Automaton has 22303 states and 25599 transitions. Word has length 249 [2024-11-19 18:29:44,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:44,349 INFO L471 AbstractCegarLoop]: Abstraction has 22303 states and 25599 transitions. [2024-11-19 18:29:44,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:29:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 22303 states and 25599 transitions. [2024-11-19 18:29:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-19 18:29:44,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:44,353 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:29:44,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 18:29:44,354 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:44,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash 360694187, now seen corresponding path program 1 times [2024-11-19 18:29:44,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:44,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065668988] [2024-11-19 18:29:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-19 18:29:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065668988] [2024-11-19 18:29:44,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065668988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:44,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:29:44,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482288407] [2024-11-19 18:29:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:44,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:29:44,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:29:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:29:44,707 INFO L87 Difference]: Start difference. First operand 22303 states and 25599 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:29:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:47,563 INFO L93 Difference]: Finished difference Result 56130 states and 65063 transitions. [2024-11-19 18:29:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:29:47,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2024-11-19 18:29:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:47,617 INFO L225 Difference]: With dead ends: 56130 [2024-11-19 18:29:47,617 INFO L226 Difference]: Without dead ends: 30848 [2024-11-19 18:29:47,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:29:47,640 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 891 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:47,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 374 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-19 18:29:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30848 states. [2024-11-19 18:29:47,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30848 to 29526. [2024-11-19 18:29:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29526 states, 29525 states have (on average 1.159424216765453) internal successors, (34232), 29525 states have internal predecessors, (34232), 0 states have call successors, (0), 0 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 18:29:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29526 states to 29526 states and 34232 transitions. [2024-11-19 18:29:47,932 INFO L78 Accepts]: Start accepts. Automaton has 29526 states and 34232 transitions. Word has length 272 [2024-11-19 18:29:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:47,932 INFO L471 AbstractCegarLoop]: Abstraction has 29526 states and 34232 transitions. [2024-11-19 18:29:47,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:29:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 29526 states and 34232 transitions. [2024-11-19 18:29:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-19 18:29:47,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:47,938 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:29:47,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 18:29:47,938 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:47,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:47,939 INFO L85 PathProgramCache]: Analyzing trace with hash 716024662, now seen corresponding path program 1 times [2024-11-19 18:29:47,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:47,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113979557] [2024-11-19 18:29:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:47,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 18:29:48,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:48,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113979557] [2024-11-19 18:29:48,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113979557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:48,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:48,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:29:48,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431463053] [2024-11-19 18:29:48,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:48,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:48,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:48,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:48,412 INFO L87 Difference]: Start difference. First operand 29526 states and 34232 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:29:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:50,002 INFO L93 Difference]: Finished difference Result 74398 states and 86009 transitions. [2024-11-19 18:29:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:50,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2024-11-19 18:29:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:50,064 INFO L225 Difference]: With dead ends: 74398 [2024-11-19 18:29:50,064 INFO L226 Difference]: Without dead ends: 41896 [2024-11-19 18:29:50,093 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 18:29:50,094 INFO L432 NwaCegarLoop]: 740 mSDtfsCounter, 363 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:50,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 808 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:29:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41896 states. [2024-11-19 18:29:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41896 to 41037. [2024-11-19 18:29:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41037 states, 41036 states have (on average 1.1224047178087533) internal successors, (46059), 41036 states have internal predecessors, (46059), 0 states have call successors, (0), 0 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 18:29:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41037 states to 41037 states and 46059 transitions. [2024-11-19 18:29:50,630 INFO L78 Accepts]: Start accepts. Automaton has 41037 states and 46059 transitions. Word has length 287 [2024-11-19 18:29:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:50,631 INFO L471 AbstractCegarLoop]: Abstraction has 41037 states and 46059 transitions. [2024-11-19 18:29:50,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:29:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 41037 states and 46059 transitions. [2024-11-19 18:29:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-19 18:29:50,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:50,640 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:29:50,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:29:50,641 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:50,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:50,641 INFO L85 PathProgramCache]: Analyzing trace with hash 541840298, now seen corresponding path program 1 times [2024-11-19 18:29:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:50,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732358765] [2024-11-19 18:29:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 238 proven. 214 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 18:29:51,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:51,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732358765] [2024-11-19 18:29:51,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732358765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:29:51,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59506071] [2024-11-19 18:29:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:51,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:29:51,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:29:51,157 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 18:29:51,159 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 18:29:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:51,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 18:29:51,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:29:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 299 proven. 73 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-19 18:29:51,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:29:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-19 18:29:51,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59506071] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 18:29:51,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 18:29:51,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-19 18:29:51,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595527831] [2024-11-19 18:29:51,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:51,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:29:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:51,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:29:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:29:51,790 INFO L87 Difference]: Start difference. First operand 41037 states and 46059 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 18:29:54,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:54,440 INFO L93 Difference]: Finished difference Result 97844 states and 109929 transitions. [2024-11-19 18:29:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:29:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2024-11-19 18:29:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:54,507 INFO L225 Difference]: With dead ends: 97844 [2024-11-19 18:29:54,507 INFO L226 Difference]: Without dead ends: 56809 [2024-11-19 18:29:54,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:29:54,542 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 850 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:54,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 201 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-19 18:29:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56809 states. [2024-11-19 18:29:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56809 to 53829. [2024-11-19 18:29:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53829 states, 53828 states have (on average 1.126216838819945) internal successors, (60622), 53828 states have internal predecessors, (60622), 0 states have call successors, (0), 0 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 18:29:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53829 states to 53829 states and 60622 transitions. [2024-11-19 18:29:55,229 INFO L78 Accepts]: Start accepts. Automaton has 53829 states and 60622 transitions. Word has length 310 [2024-11-19 18:29:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:55,230 INFO L471 AbstractCegarLoop]: Abstraction has 53829 states and 60622 transitions. [2024-11-19 18:29:55,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 18:29:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 53829 states and 60622 transitions. [2024-11-19 18:29:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-19 18:29:55,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:55,234 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:29:55,241 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 18:29:55,437 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,SelfDestructingSolverStorable13 [2024-11-19 18:29:55,437 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:55,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:55,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2012085875, now seen corresponding path program 1 times [2024-11-19 18:29:55,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:55,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774487986] [2024-11-19 18:29:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:55,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-19 18:29:55,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:55,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774487986] [2024-11-19 18:29:55,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774487986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:55,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:55,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:29:55,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573764290] [2024-11-19 18:29:55,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:55,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:55,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:55,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:55,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:55,657 INFO L87 Difference]: Start difference. First operand 53829 states and 60622 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 18:29:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:29:57,676 INFO L93 Difference]: Finished difference Result 115335 states and 130060 transitions. [2024-11-19 18:29:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:29:57,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 324 [2024-11-19 18:29:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:29:57,752 INFO L225 Difference]: With dead ends: 115335 [2024-11-19 18:29:57,752 INFO L226 Difference]: Without dead ends: 61078 [2024-11-19 18:29:57,776 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 18:29:57,776 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 504 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:29:57,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 310 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 18:29:57,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61078 states. [2024-11-19 18:29:58,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61078 to 59370. [2024-11-19 18:29:58,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59370 states, 59369 states have (on average 1.1245262679176) internal successors, (66762), 59369 states have internal predecessors, (66762), 0 states have call successors, (0), 0 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 18:29:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59370 states to 59370 states and 66762 transitions. [2024-11-19 18:29:58,565 INFO L78 Accepts]: Start accepts. Automaton has 59370 states and 66762 transitions. Word has length 324 [2024-11-19 18:29:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:29:58,565 INFO L471 AbstractCegarLoop]: Abstraction has 59370 states and 66762 transitions. [2024-11-19 18:29:58,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 18:29:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 59370 states and 66762 transitions. [2024-11-19 18:29:58,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-11-19 18:29:58,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:29:58,576 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:29:58,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 18:29:58,576 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:29:58,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:29:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1022421116, now seen corresponding path program 1 times [2024-11-19 18:29:58,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:29:58,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43965706] [2024-11-19 18:29:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:29:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:29:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:29:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-19 18:29:59,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:29:59,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43965706] [2024-11-19 18:29:59,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43965706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:29:59,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:29:59,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:29:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858385260] [2024-11-19 18:29:59,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:29:59,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:29:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:29:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:29:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:29:59,135 INFO L87 Difference]: Start difference. First operand 59370 states and 66762 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 18:30:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:30:01,032 INFO L93 Difference]: Finished difference Result 134905 states and 151659 transitions. [2024-11-19 18:30:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:30:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 340 [2024-11-19 18:30:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:30:01,109 INFO L225 Difference]: With dead ends: 134905 [2024-11-19 18:30:01,110 INFO L226 Difference]: Without dead ends: 72558 [2024-11-19 18:30:01,126 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 18:30:01,127 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 383 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:30:01,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 834 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:30:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72558 states. [2024-11-19 18:30:01,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72558 to 61033. [2024-11-19 18:30:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61033 states, 61032 states have (on average 1.1192489186000787) internal successors, (68310), 61032 states have internal predecessors, (68310), 0 states have call successors, (0), 0 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 18:30:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61033 states to 61033 states and 68310 transitions. [2024-11-19 18:30:01,967 INFO L78 Accepts]: Start accepts. Automaton has 61033 states and 68310 transitions. Word has length 340 [2024-11-19 18:30:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:30:01,968 INFO L471 AbstractCegarLoop]: Abstraction has 61033 states and 68310 transitions. [2024-11-19 18:30:01,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 18:30:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 61033 states and 68310 transitions. [2024-11-19 18:30:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-19 18:30:01,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:30:01,975 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-19 18:30:01,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:30:01,975 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:30:01,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:30:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash 4203890, now seen corresponding path program 1 times [2024-11-19 18:30:01,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:30:01,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778773282] [2024-11-19 18:30:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:30:01,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:30:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:30:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-19 18:30:02,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:30:02,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778773282] [2024-11-19 18:30:02,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778773282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:30:02,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:30:02,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:30:02,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648861326] [2024-11-19 18:30:02,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:30:02,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:30:02,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:30:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:30:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:30:02,444 INFO L87 Difference]: Start difference. First operand 61033 states and 68310 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 18:30:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:30:04,299 INFO L93 Difference]: Finished difference Result 137375 states and 153487 transitions. [2024-11-19 18:30:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:30:04,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 18:30:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:30:04,378 INFO L225 Difference]: With dead ends: 137375 [2024-11-19 18:30:04,379 INFO L226 Difference]: Without dead ends: 71232 [2024-11-19 18:30:04,394 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 18:30:04,394 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 482 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:30:04,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 724 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 18:30:04,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71232 states. [2024-11-19 18:30:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71232 to 71223. [2024-11-19 18:30:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71223 states, 71222 states have (on average 1.0991968773693521) internal successors, (78287), 71222 states have internal predecessors, (78287), 0 states have call successors, (0), 0 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 18:30:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71223 states to 71223 states and 78287 transitions. [2024-11-19 18:30:05,543 INFO L78 Accepts]: Start accepts. Automaton has 71223 states and 78287 transitions. Word has length 345 [2024-11-19 18:30:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:30:05,544 INFO L471 AbstractCegarLoop]: Abstraction has 71223 states and 78287 transitions. [2024-11-19 18:30:05,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 18:30:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 71223 states and 78287 transitions. [2024-11-19 18:30:05,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-19 18:30:05,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:30:05,556 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 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 18:30:05,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 18:30:05,557 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:30:05,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:30:05,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1918113595, now seen corresponding path program 1 times [2024-11-19 18:30:05,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:30:05,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178780654] [2024-11-19 18:30:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:30:05,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:30:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:30:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-19 18:30:05,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:30:05,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178780654] [2024-11-19 18:30:05,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178780654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:30:05,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:30:05,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:30:05,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422000844] [2024-11-19 18:30:05,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:30:05,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:30:05,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:30:05,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:30:05,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:30:05,879 INFO L87 Difference]: Start difference. First operand 71223 states and 78287 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 18:30:07,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:30:07,555 INFO L93 Difference]: Finished difference Result 157773 states and 173760 transitions. [2024-11-19 18:30:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:30:07,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 18:30:07,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:30:07,647 INFO L225 Difference]: With dead ends: 157773 [2024-11-19 18:30:07,647 INFO L226 Difference]: Without dead ends: 86552 [2024-11-19 18:30:07,691 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 18:30:07,692 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 412 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:30:07,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 299 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 18:30:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86552 states. [2024-11-19 18:30:08,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86552 to 79305. [2024-11-19 18:30:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79305 states, 79304 states have (on average 1.0928956925249673) internal successors, (86671), 79304 states have internal predecessors, (86671), 0 states have call successors, (0), 0 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 18:30:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79305 states to 79305 states and 86671 transitions. [2024-11-19 18:30:08,816 INFO L78 Accepts]: Start accepts. Automaton has 79305 states and 86671 transitions. Word has length 358 [2024-11-19 18:30:08,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:30:08,816 INFO L471 AbstractCegarLoop]: Abstraction has 79305 states and 86671 transitions. [2024-11-19 18:30:08,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 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 18:30:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 79305 states and 86671 transitions. [2024-11-19 18:30:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-19 18:30:08,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:30:08,824 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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 18:30:08,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 18:30:08,825 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:30:08,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:30:08,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1419132856, now seen corresponding path program 1 times [2024-11-19 18:30:08,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:30:08,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321823988] [2024-11-19 18:30:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:30:08,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:30:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:30:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 244 proven. 10 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-19 18:30:10,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:30:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321823988] [2024-11-19 18:30:10,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321823988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:30:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893477606] [2024-11-19 18:30:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:30:10,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:30:10,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:30:10,057 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 18:30:10,058 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 18:30:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:30:10,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 18:30:10,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:30:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 349 proven. 82 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-19 18:30:10,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:30:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 349 proven. 82 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-19 18:30:11,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893477606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:30:11,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:30:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-19 18:30:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687653347] [2024-11-19 18:30:11,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:30:11,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 18:30:11,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:30:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 18:30:11,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:30:11,571 INFO L87 Difference]: Start difference. First operand 79305 states and 86671 transitions. Second operand has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 18:30:21,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:30:21,276 INFO L93 Difference]: Finished difference Result 207161 states and 225176 transitions. [2024-11-19 18:30:21,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 18:30:21,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 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 392 [2024-11-19 18:30:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:30:21,425 INFO L225 Difference]: With dead ends: 207161 [2024-11-19 18:30:21,425 INFO L226 Difference]: Without dead ends: 123606 [2024-11-19 18:30:21,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-19 18:30:21,456 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 7088 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 11331 mSolverCounterSat, 1598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7088 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 12929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1598 IncrementalHoareTripleChecker+Valid, 11331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:30:21,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7088 Valid, 376 Invalid, 12929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1598 Valid, 11331 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-19 18:30:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123606 states. [2024-11-19 18:30:22,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123606 to 106926. [2024-11-19 18:30:22,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106926 states, 106925 states have (on average 1.0724526537292496) internal successors, (114672), 106925 states have internal predecessors, (114672), 0 states have call successors, (0), 0 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 18:30:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106926 states to 106926 states and 114672 transitions. [2024-11-19 18:30:23,412 INFO L78 Accepts]: Start accepts. Automaton has 106926 states and 114672 transitions. Word has length 392 [2024-11-19 18:30:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:30:23,416 INFO L471 AbstractCegarLoop]: Abstraction has 106926 states and 114672 transitions. [2024-11-19 18:30:23,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 18:30:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 106926 states and 114672 transitions. [2024-11-19 18:30:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-19 18:30:23,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:30:23,424 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:30:23,433 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 18:30:23,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:30:23,625 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:30:23,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:30:23,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1187910031, now seen corresponding path program 1 times [2024-11-19 18:30:23,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:30:23,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103332483] [2024-11-19 18:30:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:30:23,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:30:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:30:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-19 18:30:23,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:30:23,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103332483] [2024-11-19 18:30:23,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103332483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:30:23,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:30:23,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:30:23,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434612908] [2024-11-19 18:30:23,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:30:23,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:30:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:30:23,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:30:23,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:30:23,831 INFO L87 Difference]: Start difference. First operand 106926 states and 114672 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)