./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/Problem11_label25.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/Problem11_label25.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 1a498dbc067f1de398639e507498752ad05d79db17a274a9c2dbfecc9e6d20a0 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:02:33,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:02:33,693 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:02:33,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:02:33,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:02:33,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:02:33,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:02:33,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:02:33,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:02:33,723 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:02:33,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:02:33,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:02:33,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:02:33,725 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:02:33,725 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:02:33,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:02:33,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:02:33,727 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:02:33,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:02:33,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:02:33,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:02:33,730 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:02:33,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:02:33,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:02:33,731 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:02:33,731 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:02:33,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:02:33,732 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:02:33,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:02:33,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:02:33,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:02:33,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:02:33,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:02:33,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:02:33,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:02:33,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:02:33,734 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:02:33,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:02:33,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:02:33,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:02:33,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:02:33,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:02:33,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a498dbc067f1de398639e507498752ad05d79db17a274a9c2dbfecc9e6d20a0 [2024-11-19 18:02:33,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:02:33,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:02:33,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:02:33,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:02:33,945 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:02:33,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2024-11-19 18:02:35,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:02:35,494 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:02:35,495 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label25.c [2024-11-19 18:02:35,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c80cb00/9ae2619deb7246c1abd0815e3e0f2d3a/FLAGd678b0f43 [2024-11-19 18:02:35,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c80cb00/9ae2619deb7246c1abd0815e3e0f2d3a [2024-11-19 18:02:35,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:02:35,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:02:35,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:02:35,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:02:35,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:02:35,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:02:35" (1/1) ... [2024-11-19 18:02:35,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44972384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:35, skipping insertion in model container [2024-11-19 18:02:35,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:02:35" (1/1) ... [2024-11-19 18:02:35,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:02:36,055 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/Problem11_label25.c[4556,4569] [2024-11-19 18:02:36,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:02:36,244 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:02:36,293 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/Problem11_label25.c[4556,4569] [2024-11-19 18:02:36,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:02:36,451 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:02:36,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36 WrapperNode [2024-11-19 18:02:36,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:02:36,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:02:36,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:02:36,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:02:36,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,553 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-11-19 18:02:36,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:02:36,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:02:36,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:02:36,554 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:02:36,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,616 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 18:02:36,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,677 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,688 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:02:36,717 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:02:36,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:02:36,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:02:36,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (1/1) ... [2024-11-19 18:02:36,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:02:36,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:02:36,743 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 18:02:36,746 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 18:02:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:02:36,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:02:36,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:02:36,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:02:36,837 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:02:36,838 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:02:38,166 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-19 18:02:38,167 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:02:38,186 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:02:38,188 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:02:38,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:02:38 BoogieIcfgContainer [2024-11-19 18:02:38,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:02:38,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:02:38,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:02:38,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:02:38,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:02:35" (1/3) ... [2024-11-19 18:02:38,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6ed76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:02:38, skipping insertion in model container [2024-11-19 18:02:38,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:02:36" (2/3) ... [2024-11-19 18:02:38,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6ed76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:02:38, skipping insertion in model container [2024-11-19 18:02:38,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:02:38" (3/3) ... [2024-11-19 18:02:38,198 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25.c [2024-11-19 18:02:38,213 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:02:38,213 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:02:38,273 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:02:38,280 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;@42ebb215, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:02:38,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:02:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 18:02:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 18:02:38,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:38,296 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:02:38,296 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:38,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:38,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1843609039, now seen corresponding path program 1 times [2024-11-19 18:02:38,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:38,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238811941] [2024-11-19 18:02:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:38,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:38,602 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 18:02:38,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:38,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238811941] [2024-11-19 18:02:38,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238811941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:38,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:38,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:02:38,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891015698] [2024-11-19 18:02:38,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:38,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:38,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:38,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:38,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:02:38,632 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 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 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 18:02:39,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:39,518 INFO L93 Difference]: Finished difference Result 761 states and 1345 transitions. [2024-11-19 18:02:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:39,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2024-11-19 18:02:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:39,529 INFO L225 Difference]: With dead ends: 761 [2024-11-19 18:02:39,529 INFO L226 Difference]: Without dead ends: 413 [2024-11-19 18:02:39,532 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 18:02:39,534 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 197 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:39,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 222 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:02:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-19 18:02:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2024-11-19 18:02:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.453883495145631) internal successors, (599), 412 states have internal predecessors, (599), 0 states have call successors, (0), 0 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 18:02:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 599 transitions. [2024-11-19 18:02:39,590 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 599 transitions. Word has length 31 [2024-11-19 18:02:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:39,590 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 599 transitions. [2024-11-19 18:02:39,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 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 18:02:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 599 transitions. [2024-11-19 18:02:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-19 18:02:39,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:39,594 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:02:39,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:02:39,595 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:39,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:39,595 INFO L85 PathProgramCache]: Analyzing trace with hash 511429272, now seen corresponding path program 1 times [2024-11-19 18:02:39,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:39,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715036459] [2024-11-19 18:02:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:39,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:02:39,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:39,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715036459] [2024-11-19 18:02:39,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715036459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:39,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:39,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:02:39,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60578640] [2024-11-19 18:02:39,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:39,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:39,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:02:39,782 INFO L87 Difference]: Start difference. First operand 413 states and 599 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 18:02:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:40,485 INFO L93 Difference]: Finished difference Result 1211 states and 1763 transitions. [2024-11-19 18:02:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:40,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2024-11-19 18:02:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:40,489 INFO L225 Difference]: With dead ends: 1211 [2024-11-19 18:02:40,489 INFO L226 Difference]: Without dead ends: 800 [2024-11-19 18:02:40,490 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 18:02:40,491 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:40,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 118 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:02:40,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-19 18:02:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 789. [2024-11-19 18:02:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 1.3756345177664975) internal successors, (1084), 788 states have internal predecessors, (1084), 0 states have call successors, (0), 0 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 18:02:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1084 transitions. [2024-11-19 18:02:40,519 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1084 transitions. Word has length 99 [2024-11-19 18:02:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:40,519 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1084 transitions. [2024-11-19 18:02:40,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 18:02:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1084 transitions. [2024-11-19 18:02:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-19 18:02:40,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:40,522 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:02:40,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:02:40,522 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:40,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:40,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2046842248, now seen corresponding path program 1 times [2024-11-19 18:02:40,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:40,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717562344] [2024-11-19 18:02:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:40,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:02:40,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:40,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717562344] [2024-11-19 18:02:40,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717562344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:40,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:40,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:02:40,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545468359] [2024-11-19 18:02:40,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:40,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:40,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:40,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:02:40,791 INFO L87 Difference]: Start difference. First operand 789 states and 1084 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 18:02:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:41,445 INFO L93 Difference]: Finished difference Result 1945 states and 2614 transitions. [2024-11-19 18:02:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:41,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2024-11-19 18:02:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:41,449 INFO L225 Difference]: With dead ends: 1945 [2024-11-19 18:02:41,449 INFO L226 Difference]: Without dead ends: 1158 [2024-11-19 18:02:41,451 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 18:02:41,452 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:41,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 190 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:02:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2024-11-19 18:02:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1157. [2024-11-19 18:02:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.2716262975778547) internal successors, (1470), 1156 states have internal predecessors, (1470), 0 states have call successors, (0), 0 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 18:02:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1470 transitions. [2024-11-19 18:02:41,470 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1470 transitions. Word has length 100 [2024-11-19 18:02:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:41,470 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1470 transitions. [2024-11-19 18:02:41,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 18:02:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1470 transitions. [2024-11-19 18:02:41,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-19 18:02:41,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:41,474 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:02:41,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:02:41,474 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:41,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1827645373, now seen corresponding path program 1 times [2024-11-19 18:02:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:41,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805004238] [2024-11-19 18:02:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:41,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:02:41,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:41,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805004238] [2024-11-19 18:02:41,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805004238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:41,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:41,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:02:41,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333965792] [2024-11-19 18:02:41,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:41,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:02:41,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:02:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:02:41,644 INFO L87 Difference]: Start difference. First operand 1157 states and 1470 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 18:02:42,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:42,774 INFO L93 Difference]: Finished difference Result 3445 states and 4568 transitions. [2024-11-19 18:02:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:02:42,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2024-11-19 18:02:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:42,786 INFO L225 Difference]: With dead ends: 3445 [2024-11-19 18:02:42,786 INFO L226 Difference]: Without dead ends: 2474 [2024-11-19 18:02:42,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:02:42,789 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 363 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:42,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 87 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:02:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2024-11-19 18:02:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2473. [2024-11-19 18:02:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2472 states have (on average 1.287621359223301) internal successors, (3183), 2472 states have internal predecessors, (3183), 0 states have call successors, (0), 0 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 18:02:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3183 transitions. [2024-11-19 18:02:42,824 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3183 transitions. Word has length 158 [2024-11-19 18:02:42,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:42,825 INFO L471 AbstractCegarLoop]: Abstraction has 2473 states and 3183 transitions. [2024-11-19 18:02:42,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 18:02:42,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3183 transitions. [2024-11-19 18:02:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-19 18:02:42,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:42,828 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:02:42,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:02:42,829 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:42,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1853380539, now seen corresponding path program 1 times [2024-11-19 18:02:42,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:42,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103904192] [2024-11-19 18:02:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:42,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:02:43,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:43,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103904192] [2024-11-19 18:02:43,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103904192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:43,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:43,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:02:43,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312519196] [2024-11-19 18:02:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:43,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:02:43,004 INFO L87 Difference]: Start difference. First operand 2473 states and 3183 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 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 18:02:44,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:44,054 INFO L93 Difference]: Finished difference Result 5695 states and 7520 transitions. [2024-11-19 18:02:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:44,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-11-19 18:02:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:44,066 INFO L225 Difference]: With dead ends: 5695 [2024-11-19 18:02:44,066 INFO L226 Difference]: Without dead ends: 3592 [2024-11-19 18:02:44,069 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 18:02:44,072 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 136 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:44,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 347 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:02:44,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2024-11-19 18:02:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3579. [2024-11-19 18:02:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 3578 states have (on average 1.252375628842929) internal successors, (4481), 3578 states have internal predecessors, (4481), 0 states have call successors, (0), 0 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 18:02:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 4481 transitions. [2024-11-19 18:02:44,139 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 4481 transitions. Word has length 211 [2024-11-19 18:02:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:44,140 INFO L471 AbstractCegarLoop]: Abstraction has 3579 states and 4481 transitions. [2024-11-19 18:02:44,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 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 18:02:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 4481 transitions. [2024-11-19 18:02:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-19 18:02:44,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:44,145 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:02:44,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:02:44,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:44,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:44,146 INFO L85 PathProgramCache]: Analyzing trace with hash 898941365, now seen corresponding path program 1 times [2024-11-19 18:02:44,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:44,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970031154] [2024-11-19 18:02:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:44,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-19 18:02:44,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:44,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970031154] [2024-11-19 18:02:44,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970031154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:44,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:44,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:02:44,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123256026] [2024-11-19 18:02:44,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:44,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:44,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:44,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:44,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:02:44,345 INFO L87 Difference]: Start difference. First operand 3579 states and 4481 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 18:02:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:45,062 INFO L93 Difference]: Finished difference Result 7726 states and 9781 transitions. [2024-11-19 18:02:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:45,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 212 [2024-11-19 18:02:45,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:45,073 INFO L225 Difference]: With dead ends: 7726 [2024-11-19 18:02:45,074 INFO L226 Difference]: Without dead ends: 4517 [2024-11-19 18:02:45,077 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 18:02:45,077 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 171 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:45,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 346 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:02:45,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2024-11-19 18:02:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4499. [2024-11-19 18:02:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 4498 states have (on average 1.240773677189862) internal successors, (5581), 4498 states have internal predecessors, (5581), 0 states have call successors, (0), 0 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 18:02:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 5581 transitions. [2024-11-19 18:02:45,129 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 5581 transitions. Word has length 212 [2024-11-19 18:02:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:45,130 INFO L471 AbstractCegarLoop]: Abstraction has 4499 states and 5581 transitions. [2024-11-19 18:02:45,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 18:02:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 5581 transitions. [2024-11-19 18:02:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-19 18:02:45,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:45,133 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:02:45,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:02:45,133 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:45,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:45,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1164869568, now seen corresponding path program 1 times [2024-11-19 18:02:45,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:45,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974102993] [2024-11-19 18:02:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:45,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-19 18:02:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:45,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974102993] [2024-11-19 18:02:45,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974102993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:45,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:45,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:02:45,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123410010] [2024-11-19 18:02:45,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:45,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:45,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:45,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:45,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:02:45,352 INFO L87 Difference]: Start difference. First operand 4499 states and 5581 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 18:02:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:46,005 INFO L93 Difference]: Finished difference Result 9741 states and 12305 transitions. [2024-11-19 18:02:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:46,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 213 [2024-11-19 18:02:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:46,023 INFO L225 Difference]: With dead ends: 9741 [2024-11-19 18:02:46,023 INFO L226 Difference]: Without dead ends: 5612 [2024-11-19 18:02:46,029 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 18:02:46,030 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 166 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:46,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 371 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:02:46,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5612 states. [2024-11-19 18:02:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5612 to 5419. [2024-11-19 18:02:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 5418 states have (on average 1.2331118493909192) internal successors, (6681), 5418 states have internal predecessors, (6681), 0 states have call successors, (0), 0 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 18:02:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 6681 transitions. [2024-11-19 18:02:46,107 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 6681 transitions. Word has length 213 [2024-11-19 18:02:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:46,107 INFO L471 AbstractCegarLoop]: Abstraction has 5419 states and 6681 transitions. [2024-11-19 18:02:46,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 18:02:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 6681 transitions. [2024-11-19 18:02:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-19 18:02:46,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:46,111 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:02:46,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:02:46,111 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:46,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash 479506802, now seen corresponding path program 1 times [2024-11-19 18:02:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:46,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097856933] [2024-11-19 18:02:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:46,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:02:46,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:46,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097856933] [2024-11-19 18:02:46,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097856933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:46,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:46,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:02:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720107160] [2024-11-19 18:02:46,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:46,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:02:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:46,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:02:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:02:46,531 INFO L87 Difference]: Start difference. First operand 5419 states and 6681 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 18:02:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:47,546 INFO L93 Difference]: Finished difference Result 16399 states and 20713 transitions. [2024-11-19 18:02:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:02:47,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2024-11-19 18:02:47,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:47,571 INFO L225 Difference]: With dead ends: 16399 [2024-11-19 18:02:47,571 INFO L226 Difference]: Without dead ends: 11350 [2024-11-19 18:02:47,575 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 18:02:47,575 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 306 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:47,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 194 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:02:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11350 states. [2024-11-19 18:02:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11350 to 11344. [2024-11-19 18:02:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11344 states, 11343 states have (on average 1.2060301507537687) internal successors, (13680), 11343 states have internal predecessors, (13680), 0 states have call successors, (0), 0 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 18:02:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11344 states to 11344 states and 13680 transitions. [2024-11-19 18:02:47,707 INFO L78 Accepts]: Start accepts. Automaton has 11344 states and 13680 transitions. Word has length 233 [2024-11-19 18:02:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:47,707 INFO L471 AbstractCegarLoop]: Abstraction has 11344 states and 13680 transitions. [2024-11-19 18:02:47,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 18:02:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 11344 states and 13680 transitions. [2024-11-19 18:02:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-19 18:02:47,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:47,711 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:02:47,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 18:02:47,711 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:47,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash 483937782, now seen corresponding path program 1 times [2024-11-19 18:02:47,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:47,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141840925] [2024-11-19 18:02:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:47,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-19 18:02:47,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:47,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141840925] [2024-11-19 18:02:47,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141840925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:47,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:47,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:02:47,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089835666] [2024-11-19 18:02:47,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:47,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:47,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:47,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:02:47,805 INFO L87 Difference]: Start difference. First operand 11344 states and 13680 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 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 18:02:48,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:48,434 INFO L93 Difference]: Finished difference Result 25075 states and 30489 transitions. [2024-11-19 18:02:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:48,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 234 [2024-11-19 18:02:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:48,542 INFO L225 Difference]: With dead ends: 25075 [2024-11-19 18:02:48,542 INFO L226 Difference]: Without dead ends: 14101 [2024-11-19 18:02:48,549 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 18:02:48,550 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:48,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 153 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:02:48,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14101 states. [2024-11-19 18:02:48,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14101 to 13547. [2024-11-19 18:02:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13547 states, 13546 states have (on average 1.1601210689502437) internal successors, (15715), 13546 states have internal predecessors, (15715), 0 states have call successors, (0), 0 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 18:02:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13547 states to 13547 states and 15715 transitions. [2024-11-19 18:02:48,740 INFO L78 Accepts]: Start accepts. Automaton has 13547 states and 15715 transitions. Word has length 234 [2024-11-19 18:02:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:48,740 INFO L471 AbstractCegarLoop]: Abstraction has 13547 states and 15715 transitions. [2024-11-19 18:02:48,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 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 18:02:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 13547 states and 15715 transitions. [2024-11-19 18:02:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-19 18:02:48,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:48,745 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:02:48,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 18:02:48,746 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:48,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:48,746 INFO L85 PathProgramCache]: Analyzing trace with hash -554811765, now seen corresponding path program 1 times [2024-11-19 18:02:48,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132488429] [2024-11-19 18:02:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:02:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:49,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132488429] [2024-11-19 18:02:49,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132488429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:49,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:49,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:02:49,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585308290] [2024-11-19 18:02:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:49,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:02:49,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:49,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:02:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:02:49,102 INFO L87 Difference]: Start difference. First operand 13547 states and 15715 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 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 18:02:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:50,231 INFO L93 Difference]: Finished difference Result 32623 states and 38078 transitions. [2024-11-19 18:02:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:02:50,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2024-11-19 18:02:50,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:50,258 INFO L225 Difference]: With dead ends: 32623 [2024-11-19 18:02:50,258 INFO L226 Difference]: Without dead ends: 19446 [2024-11-19 18:02:50,271 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 18:02:50,272 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 320 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:50,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 107 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:02:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19446 states. [2024-11-19 18:02:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19446 to 17962. [2024-11-19 18:02:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17962 states, 17961 states have (on average 1.158120371916931) internal successors, (20801), 17961 states have internal predecessors, (20801), 0 states have call successors, (0), 0 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 18:02:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17962 states to 17962 states and 20801 transitions. [2024-11-19 18:02:50,462 INFO L78 Accepts]: Start accepts. Automaton has 17962 states and 20801 transitions. Word has length 243 [2024-11-19 18:02:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:50,463 INFO L471 AbstractCegarLoop]: Abstraction has 17962 states and 20801 transitions. [2024-11-19 18:02:50,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 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 18:02:50,464 INFO L276 IsEmpty]: Start isEmpty. Operand 17962 states and 20801 transitions. [2024-11-19 18:02:50,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-19 18:02:50,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:50,468 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:02:50,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:02:50,468 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:50,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:50,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1688647778, now seen corresponding path program 1 times [2024-11-19 18:02:50,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:50,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183540682] [2024-11-19 18:02:50,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:50,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-19 18:02:50,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:50,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183540682] [2024-11-19 18:02:50,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183540682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:50,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:50,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:02:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031863865] [2024-11-19 18:02:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:50,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:50,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:02:50,680 INFO L87 Difference]: Start difference. First operand 17962 states and 20801 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 18:02:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:51,337 INFO L93 Difference]: Finished difference Result 35185 states and 40785 transitions. [2024-11-19 18:02:51,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:51,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 250 [2024-11-19 18:02:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:51,358 INFO L225 Difference]: With dead ends: 35185 [2024-11-19 18:02:51,358 INFO L226 Difference]: Without dead ends: 17409 [2024-11-19 18:02:51,370 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 18:02:51,371 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 170 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:51,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 378 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:02:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17409 states. [2024-11-19 18:02:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17409 to 17217. [2024-11-19 18:02:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17217 states, 17216 states have (on average 1.1367913568773234) internal successors, (19571), 17216 states have internal predecessors, (19571), 0 states have call successors, (0), 0 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 18:02:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17217 states to 17217 states and 19571 transitions. [2024-11-19 18:02:51,600 INFO L78 Accepts]: Start accepts. Automaton has 17217 states and 19571 transitions. Word has length 250 [2024-11-19 18:02:51,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:51,601 INFO L471 AbstractCegarLoop]: Abstraction has 17217 states and 19571 transitions. [2024-11-19 18:02:51,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 18:02:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 17217 states and 19571 transitions. [2024-11-19 18:02:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-19 18:02:51,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:51,606 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:02:51,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 18:02:51,607 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:51,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:51,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1152681977, now seen corresponding path program 1 times [2024-11-19 18:02:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30433121] [2024-11-19 18:02:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 113 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:02:52,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:52,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30433121] [2024-11-19 18:02:52,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30433121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:02:52,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516365364] [2024-11-19 18:02:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:52,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:02:52,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:02:52,192 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 18:02:52,193 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 18:02:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:52,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:02:52,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:02:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:02:52,779 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:02:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516365364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:52,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:02:52,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:02:52,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754322277] [2024-11-19 18:02:52,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:52,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:02:52,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:52,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:02:52,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:02:52,781 INFO L87 Difference]: Start difference. First operand 17217 states and 19571 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 18:02:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:53,626 INFO L93 Difference]: Finished difference Result 32042 states and 36493 transitions. [2024-11-19 18:02:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:02:53,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2024-11-19 18:02:53,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:53,645 INFO L225 Difference]: With dead ends: 32042 [2024-11-19 18:02:53,645 INFO L226 Difference]: Without dead ends: 17223 [2024-11-19 18:02:53,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:02:53,656 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 188 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:53,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 163 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:02:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17223 states. [2024-11-19 18:02:53,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17223 to 17217. [2024-11-19 18:02:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17217 states, 17216 states have (on average 1.1353973048327137) internal successors, (19547), 17216 states have internal predecessors, (19547), 0 states have call successors, (0), 0 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 18:02:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17217 states to 17217 states and 19547 transitions. [2024-11-19 18:02:53,778 INFO L78 Accepts]: Start accepts. Automaton has 17217 states and 19547 transitions. Word has length 264 [2024-11-19 18:02:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:53,779 INFO L471 AbstractCegarLoop]: Abstraction has 17217 states and 19547 transitions. [2024-11-19 18:02:53,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 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 18:02:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 17217 states and 19547 transitions. [2024-11-19 18:02:53,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-19 18:02:53,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:53,787 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:53,797 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 18:02:53,987 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,SelfDestructingSolverStorable11 [2024-11-19 18:02:53,988 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:53,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:53,988 INFO L85 PathProgramCache]: Analyzing trace with hash -800517391, now seen corresponding path program 1 times [2024-11-19 18:02:53,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:53,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010283334] [2024-11-19 18:02:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:53,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-19 18:02:54,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:54,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010283334] [2024-11-19 18:02:54,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010283334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:54,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:54,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:02:54,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750961285] [2024-11-19 18:02:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:54,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:54,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:54,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:54,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:02:54,211 INFO L87 Difference]: Start difference. First operand 17217 states and 19547 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 18:02:54,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:54,761 INFO L93 Difference]: Finished difference Result 35899 states and 40779 transitions. [2024-11-19 18:02:54,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:54,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 298 [2024-11-19 18:02:54,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:54,788 INFO L225 Difference]: With dead ends: 35899 [2024-11-19 18:02:54,789 INFO L226 Difference]: Without dead ends: 21080 [2024-11-19 18:02:54,802 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 18:02:54,803 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 191 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:54,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 151 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:02:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21080 states. [2024-11-19 18:02:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21080 to 18136. [2024-11-19 18:02:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18136 states, 18135 states have (on average 1.1355390129583678) internal successors, (20593), 18135 states have internal predecessors, (20593), 0 states have call successors, (0), 0 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 18:02:55,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18136 states to 18136 states and 20593 transitions. [2024-11-19 18:02:55,017 INFO L78 Accepts]: Start accepts. Automaton has 18136 states and 20593 transitions. Word has length 298 [2024-11-19 18:02:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:55,018 INFO L471 AbstractCegarLoop]: Abstraction has 18136 states and 20593 transitions. [2024-11-19 18:02:55,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 18:02:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 18136 states and 20593 transitions. [2024-11-19 18:02:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-19 18:02:55,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:55,027 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 18:02:55,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:02:55,027 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:55,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:55,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1136282861, now seen corresponding path program 1 times [2024-11-19 18:02:55,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:55,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365177064] [2024-11-19 18:02:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:55,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-19 18:02:55,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365177064] [2024-11-19 18:02:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365177064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:55,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:55,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:02:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285942922] [2024-11-19 18:02:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:55,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:02:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:02:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:02:55,495 INFO L87 Difference]: Start difference. First operand 18136 states and 20593 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 18:02:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:56,607 INFO L93 Difference]: Finished difference Result 41457 states and 47289 transitions. [2024-11-19 18:02:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:02:56,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 302 [2024-11-19 18:02:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:56,637 INFO L225 Difference]: With dead ends: 41457 [2024-11-19 18:02:56,638 INFO L226 Difference]: Without dead ends: 24978 [2024-11-19 18:02:56,652 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 18:02:56,654 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 313 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:56,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 424 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:02:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24978 states. [2024-11-19 18:02:56,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24978 to 20164. [2024-11-19 18:02:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20164 states, 20163 states have (on average 1.1247830184000396) internal successors, (22679), 20163 states have internal predecessors, (22679), 0 states have call successors, (0), 0 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 18:02:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20164 states to 20164 states and 22679 transitions. [2024-11-19 18:02:56,841 INFO L78 Accepts]: Start accepts. Automaton has 20164 states and 22679 transitions. Word has length 302 [2024-11-19 18:02:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:56,841 INFO L471 AbstractCegarLoop]: Abstraction has 20164 states and 22679 transitions. [2024-11-19 18:02:56,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 18:02:56,842 INFO L276 IsEmpty]: Start isEmpty. Operand 20164 states and 22679 transitions. [2024-11-19 18:02:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-19 18:02:56,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:56,847 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:02:56,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 18:02:56,847 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:56,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1067278363, now seen corresponding path program 1 times [2024-11-19 18:02:56,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:56,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109763492] [2024-11-19 18:02:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:56,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 56 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:02:57,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:57,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109763492] [2024-11-19 18:02:57,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109763492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:02:57,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116059250] [2024-11-19 18:02:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:57,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:02:57,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:02:57,256 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 18:02:57,257 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 18:02:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:57,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:02:57,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:02:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-19 18:02:57,439 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:02:57,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116059250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:57,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:02:57,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-19 18:02:57,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148138620] [2024-11-19 18:02:57,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:57,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:02:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:02:57,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:02:57,441 INFO L87 Difference]: Start difference. First operand 20164 states and 22679 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 18:02:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:02:58,056 INFO L93 Difference]: Finished difference Result 20350 states and 22870 transitions. [2024-11-19 18:02:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:02:58,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 311 [2024-11-19 18:02:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:02:58,074 INFO L225 Difference]: With dead ends: 20350 [2024-11-19 18:02:58,074 INFO L226 Difference]: Without dead ends: 20348 [2024-11-19 18:02:58,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:02:58,079 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:02:58,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 382 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:02:58,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20348 states. [2024-11-19 18:02:58,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20348 to 20164. [2024-11-19 18:02:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20164 states, 20163 states have (on average 1.1247830184000396) internal successors, (22679), 20163 states have internal predecessors, (22679), 0 states have call successors, (0), 0 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 18:02:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20164 states to 20164 states and 22679 transitions. [2024-11-19 18:02:58,363 INFO L78 Accepts]: Start accepts. Automaton has 20164 states and 22679 transitions. Word has length 311 [2024-11-19 18:02:58,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:02:58,364 INFO L471 AbstractCegarLoop]: Abstraction has 20164 states and 22679 transitions. [2024-11-19 18:02:58,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 18:02:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 20164 states and 22679 transitions. [2024-11-19 18:02:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-19 18:02:58,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:02:58,371 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 18:02:58,377 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 18:02:58,571 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,SelfDestructingSolverStorable14 [2024-11-19 18:02:58,572 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:02:58,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:02:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1650248133, now seen corresponding path program 1 times [2024-11-19 18:02:58,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:02:58,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845298962] [2024-11-19 18:02:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:02:58,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:02:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:02:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 18:02:58,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:02:58,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845298962] [2024-11-19 18:02:58,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845298962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:02:58,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:02:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:02:58,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707717358] [2024-11-19 18:02:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:02:58,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:02:58,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:02:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:02:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:02:58,902 INFO L87 Difference]: Start difference. First operand 20164 states and 22679 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 18:03:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:00,035 INFO L93 Difference]: Finished difference Result 46981 states and 52838 transitions. [2024-11-19 18:03:00,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:03:00,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 318 [2024-11-19 18:03:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:00,063 INFO L225 Difference]: With dead ends: 46981 [2024-11-19 18:03:00,063 INFO L226 Difference]: Without dead ends: 29215 [2024-11-19 18:03:00,080 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 18:03:00,081 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 331 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:00,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 79 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:03:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29215 states. [2024-11-19 18:03:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29215 to 26993. [2024-11-19 18:03:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26993 states, 26992 states have (on average 1.121184054534677) internal successors, (30263), 26992 states have internal predecessors, (30263), 0 states have call successors, (0), 0 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 18:03:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26993 states to 26993 states and 30263 transitions. [2024-11-19 18:03:00,379 INFO L78 Accepts]: Start accepts. Automaton has 26993 states and 30263 transitions. Word has length 318 [2024-11-19 18:03:00,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:00,379 INFO L471 AbstractCegarLoop]: Abstraction has 26993 states and 30263 transitions. [2024-11-19 18:03:00,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 18:03:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand 26993 states and 30263 transitions. [2024-11-19 18:03:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-19 18:03:00,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:00,394 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:03:00,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:03:00,395 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:00,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash 623756768, now seen corresponding path program 1 times [2024-11-19 18:03:00,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:00,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817804492] [2024-11-19 18:03:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:00,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:03:00,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817804492] [2024-11-19 18:03:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817804492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:03:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190105719] [2024-11-19 18:03:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:03:00,714 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 18:03:00,715 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 18:03:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:00,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 18:03:00,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:03:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:03:01,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:03:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:03:02,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190105719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:03:02,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:03:02,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2024-11-19 18:03:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56533588] [2024-11-19 18:03:02,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:03:02,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 18:03:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 18:03:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:03:02,398 INFO L87 Difference]: Start difference. First operand 26993 states and 30263 transitions. Second operand has 10 states, 10 states have (on average 68.9) internal successors, (689), 9 states have internal predecessors, (689), 0 states have call successors, (0), 0 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 18:03:04,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:04,992 INFO L93 Difference]: Finished difference Result 72084 states and 80692 transitions. [2024-11-19 18:03:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 18:03:04,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 68.9) internal successors, (689), 9 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2024-11-19 18:03:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:05,037 INFO L225 Difference]: With dead ends: 72084 [2024-11-19 18:03:05,037 INFO L226 Difference]: Without dead ends: 48041 [2024-11-19 18:03:05,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:03:05,058 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 988 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 4267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:05,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 223 Invalid, 4267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 3869 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-19 18:03:05,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48041 states. [2024-11-19 18:03:05,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48041 to 43060. [2024-11-19 18:03:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43060 states, 43059 states have (on average 1.1203697252606888) internal successors, (48242), 43059 states have internal predecessors, (48242), 0 states have call successors, (0), 0 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 18:03:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43060 states to 43060 states and 48242 transitions. [2024-11-19 18:03:05,577 INFO L78 Accepts]: Start accepts. Automaton has 43060 states and 48242 transitions. Word has length 329 [2024-11-19 18:03:05,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:05,577 INFO L471 AbstractCegarLoop]: Abstraction has 43060 states and 48242 transitions. [2024-11-19 18:03:05,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.9) internal successors, (689), 9 states have internal predecessors, (689), 0 states have call successors, (0), 0 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 18:03:05,578 INFO L276 IsEmpty]: Start isEmpty. Operand 43060 states and 48242 transitions. [2024-11-19 18:03:05,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-19 18:03:05,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:05,585 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 18:03:05,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 18:03:05,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:05,790 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:05,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:05,790 INFO L85 PathProgramCache]: Analyzing trace with hash 855192324, now seen corresponding path program 1 times [2024-11-19 18:03:05,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:05,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208614838] [2024-11-19 18:03:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:05,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-19 18:03:06,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:06,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208614838] [2024-11-19 18:03:06,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208614838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:06,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:03:06,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:03:06,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730827213] [2024-11-19 18:03:06,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:06,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:03:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:03:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:03:06,036 INFO L87 Difference]: Start difference. First operand 43060 states and 48242 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 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 18:03:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:07,427 INFO L93 Difference]: Finished difference Result 89077 states and 99656 transitions. [2024-11-19 18:03:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:03:07,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 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 353 [2024-11-19 18:03:07,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:07,492 INFO L225 Difference]: With dead ends: 89077 [2024-11-19 18:03:07,492 INFO L226 Difference]: Without dead ends: 49153 [2024-11-19 18:03:07,521 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 18:03:07,521 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 328 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:07,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 60 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 18:03:07,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49153 states. [2024-11-19 18:03:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49153 to 44711. [2024-11-19 18:03:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44711 states, 44710 states have (on average 1.1186759114292104) internal successors, (50016), 44710 states have internal predecessors, (50016), 0 states have call successors, (0), 0 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 18:03:08,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44711 states to 44711 states and 50016 transitions. [2024-11-19 18:03:08,305 INFO L78 Accepts]: Start accepts. Automaton has 44711 states and 50016 transitions. Word has length 353 [2024-11-19 18:03:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:08,306 INFO L471 AbstractCegarLoop]: Abstraction has 44711 states and 50016 transitions. [2024-11-19 18:03:08,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 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 18:03:08,306 INFO L276 IsEmpty]: Start isEmpty. Operand 44711 states and 50016 transitions. [2024-11-19 18:03:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-19 18:03:08,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:08,322 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:03:08,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 18:03:08,322 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:08,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:08,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1639835473, now seen corresponding path program 1 times [2024-11-19 18:03:08,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:08,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986349646] [2024-11-19 18:03:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-19 18:03:08,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:08,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986349646] [2024-11-19 18:03:08,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986349646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:08,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:03:08,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:03:08,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370720148] [2024-11-19 18:03:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:08,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:03:08,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:08,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:03:08,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:03:08,665 INFO L87 Difference]: Start difference. First operand 44711 states and 50016 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 18:03:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:09,462 INFO L93 Difference]: Finished difference Result 93468 states and 104622 transitions. [2024-11-19 18:03:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:03:09,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 389 [2024-11-19 18:03:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:09,508 INFO L225 Difference]: With dead ends: 93468 [2024-11-19 18:03:09,508 INFO L226 Difference]: Without dead ends: 49127 [2024-11-19 18:03:09,531 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 18:03:09,532 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 63 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:09,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 369 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:03:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49127 states. [2024-11-19 18:03:09,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49127 to 46367. [2024-11-19 18:03:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46367 states, 46366 states have (on average 1.1162489755424234) internal successors, (51756), 46366 states have internal predecessors, (51756), 0 states have call successors, (0), 0 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 18:03:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46367 states to 46367 states and 51756 transitions. [2024-11-19 18:03:09,966 INFO L78 Accepts]: Start accepts. Automaton has 46367 states and 51756 transitions. Word has length 389 [2024-11-19 18:03:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:09,967 INFO L471 AbstractCegarLoop]: Abstraction has 46367 states and 51756 transitions. [2024-11-19 18:03:09,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 18:03:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 46367 states and 51756 transitions. [2024-11-19 18:03:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-19 18:03:09,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:09,981 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:03:09,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 18:03:09,981 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:09,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash 830831852, now seen corresponding path program 1 times [2024-11-19 18:03:09,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:09,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403811962] [2024-11-19 18:03:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:09,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-11-19 18:03:10,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:10,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403811962] [2024-11-19 18:03:10,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403811962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:10,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:03:10,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:03:10,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283965143] [2024-11-19 18:03:10,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:10,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:03:10,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:03:10,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:03:10,107 INFO L87 Difference]: Start difference. First operand 46367 states and 51756 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 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 18:03:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:10,902 INFO L93 Difference]: Finished difference Result 88677 states and 98872 transitions. [2024-11-19 18:03:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:03:10,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 404 [2024-11-19 18:03:10,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:10,948 INFO L225 Difference]: With dead ends: 88677 [2024-11-19 18:03:10,948 INFO L226 Difference]: Without dead ends: 45814 [2024-11-19 18:03:10,976 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 18:03:10,976 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 166 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:10,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 357 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:03:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45814 states. [2024-11-19 18:03:11,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45814 to 27352. [2024-11-19 18:03:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27352 states, 27351 states have (on average 1.1157178896566853) internal successors, (30516), 27351 states have internal predecessors, (30516), 0 states have call successors, (0), 0 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 18:03:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27352 states to 27352 states and 30516 transitions. [2024-11-19 18:03:11,324 INFO L78 Accepts]: Start accepts. Automaton has 27352 states and 30516 transitions. Word has length 404 [2024-11-19 18:03:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:11,324 INFO L471 AbstractCegarLoop]: Abstraction has 27352 states and 30516 transitions. [2024-11-19 18:03:11,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 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 18:03:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 27352 states and 30516 transitions. [2024-11-19 18:03:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-19 18:03:11,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:11,334 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:11,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 18:03:11,334 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:11,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash 908773697, now seen corresponding path program 1 times [2024-11-19 18:03:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:11,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344851253] [2024-11-19 18:03:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:11,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-19 18:03:11,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:11,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344851253] [2024-11-19 18:03:11,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344851253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:03:11,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119631395] [2024-11-19 18:03:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:11,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:11,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:03:11,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:03:11,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 18:03:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:11,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:03:11,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:03:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-19 18:03:11,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:03:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119631395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:11,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:03:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-19 18:03:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953905675] [2024-11-19 18:03:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:11,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:03:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:03:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:03:11,887 INFO L87 Difference]: Start difference. First operand 27352 states and 30516 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 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 18:03:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:12,519 INFO L93 Difference]: Finished difference Result 55987 states and 62403 transitions. [2024-11-19 18:03:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:03:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 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 426 [2024-11-19 18:03:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:12,546 INFO L225 Difference]: With dead ends: 55987 [2024-11-19 18:03:12,546 INFO L226 Difference]: Without dead ends: 29005 [2024-11-19 18:03:12,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:03:12,562 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 175 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:12,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 138 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:03:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29005 states. [2024-11-19 18:03:12,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29005 to 26423. [2024-11-19 18:03:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26423 states, 26422 states have (on average 1.1115358413443344) internal successors, (29369), 26422 states have internal predecessors, (29369), 0 states have call successors, (0), 0 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 18:03:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26423 states to 26423 states and 29369 transitions. [2024-11-19 18:03:12,867 INFO L78 Accepts]: Start accepts. Automaton has 26423 states and 29369 transitions. Word has length 426 [2024-11-19 18:03:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:12,867 INFO L471 AbstractCegarLoop]: Abstraction has 26423 states and 29369 transitions. [2024-11-19 18:03:12,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 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 18:03:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 26423 states and 29369 transitions. [2024-11-19 18:03:12,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2024-11-19 18:03:12,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:12,880 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:03:12,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 18:03:13,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:13,081 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:13,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:13,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1414202340, now seen corresponding path program 1 times [2024-11-19 18:03:13,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:13,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92700777] [2024-11-19 18:03:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:13,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-19 18:03:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92700777] [2024-11-19 18:03:13,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92700777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:13,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:03:13,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:03:13,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579657273] [2024-11-19 18:03:13,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:13,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:03:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:03:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:03:13,536 INFO L87 Difference]: Start difference. First operand 26423 states and 29369 transitions. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 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 18:03:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:14,612 INFO L93 Difference]: Finished difference Result 60958 states and 67825 transitions. [2024-11-19 18:03:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:03:14,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 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 517 [2024-11-19 18:03:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:14,642 INFO L225 Difference]: With dead ends: 60958 [2024-11-19 18:03:14,642 INFO L226 Difference]: Without dead ends: 34905 [2024-11-19 18:03:14,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:03:14,660 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 121 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:14,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 102 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:03:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34905 states. [2024-11-19 18:03:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34905 to 31220. [2024-11-19 18:03:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31220 states, 31219 states have (on average 1.1066337807104647) internal successors, (34548), 31219 states have internal predecessors, (34548), 0 states have call successors, (0), 0 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 18:03:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31220 states to 31220 states and 34548 transitions. [2024-11-19 18:03:14,927 INFO L78 Accepts]: Start accepts. Automaton has 31220 states and 34548 transitions. Word has length 517 [2024-11-19 18:03:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:14,927 INFO L471 AbstractCegarLoop]: Abstraction has 31220 states and 34548 transitions. [2024-11-19 18:03:14,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 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 18:03:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 31220 states and 34548 transitions. [2024-11-19 18:03:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-11-19 18:03:14,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:14,942 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-11-19 18:03:14,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 18:03:14,942 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:14,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash 348163194, now seen corresponding path program 1 times [2024-11-19 18:03:14,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:14,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254135223] [2024-11-19 18:03:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:14,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-19 18:03:15,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:15,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254135223] [2024-11-19 18:03:15,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254135223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:03:15,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527654838] [2024-11-19 18:03:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:15,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:15,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:03:15,830 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:03:15,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 18:03:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:16,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 18:03:16,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:03:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-19 18:03:16,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:03:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 29 proven. 394 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-19 18:03:24,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527654838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:03:24,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:03:24,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 11 [2024-11-19 18:03:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511276733] [2024-11-19 18:03:24,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:03:24,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 18:03:24,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:24,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 18:03:24,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-19 18:03:24,496 INFO L87 Difference]: Start difference. First operand 31220 states and 34548 transitions. Second operand has 12 states, 12 states have (on average 96.58333333333333) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 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 18:03:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:28,918 INFO L93 Difference]: Finished difference Result 100593 states and 111212 transitions. [2024-11-19 18:03:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 18:03:28,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 96.58333333333333) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 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 555 [2024-11-19 18:03:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:29,007 INFO L225 Difference]: With dead ends: 100593 [2024-11-19 18:03:29,007 INFO L226 Difference]: Without dead ends: 72691 [2024-11-19 18:03:29,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1102 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2024-11-19 18:03:29,040 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 2490 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 1742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 5504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1742 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:29,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2490 Valid, 198 Invalid, 5504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1742 Valid, 3762 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-19 18:03:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72691 states. [2024-11-19 18:03:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72691 to 44479. [2024-11-19 18:03:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44479 states, 44478 states have (on average 1.1063447097441432) internal successors, (49208), 44478 states have internal predecessors, (49208), 0 states have call successors, (0), 0 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 18:03:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44479 states to 44479 states and 49208 transitions. [2024-11-19 18:03:29,747 INFO L78 Accepts]: Start accepts. Automaton has 44479 states and 49208 transitions. Word has length 555 [2024-11-19 18:03:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:29,748 INFO L471 AbstractCegarLoop]: Abstraction has 44479 states and 49208 transitions. [2024-11-19 18:03:29,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 96.58333333333333) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 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 18:03:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 44479 states and 49208 transitions. [2024-11-19 18:03:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2024-11-19 18:03:29,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:29,779 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 18:03:29,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 18:03:29,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 18:03:29,986 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:29,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash 494176387, now seen corresponding path program 1 times [2024-11-19 18:03:29,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:29,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489867990] [2024-11-19 18:03:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:29,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 1352 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-11-19 18:03:30,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:30,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489867990] [2024-11-19 18:03:30,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489867990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:30,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:03:30,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:03:30,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673761312] [2024-11-19 18:03:30,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:30,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:03:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:03:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:03:30,350 INFO L87 Difference]: Start difference. First operand 44479 states and 49208 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 18:03:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:30,995 INFO L93 Difference]: Finished difference Result 88257 states and 97582 transitions. [2024-11-19 18:03:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:03:30,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 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 824 [2024-11-19 18:03:30,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:31,037 INFO L225 Difference]: With dead ends: 88257 [2024-11-19 18:03:31,038 INFO L226 Difference]: Without dead ends: 45808 [2024-11-19 18:03:31,063 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 18:03:31,064 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 101 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:31,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 150 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:03:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45808 states. [2024-11-19 18:03:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45808 to 42269. [2024-11-19 18:03:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42269 states, 42268 states have (on average 1.0977335099839123) internal successors, (46399), 42268 states have internal predecessors, (46399), 0 states have call successors, (0), 0 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 18:03:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42269 states to 42269 states and 46399 transitions. [2024-11-19 18:03:31,865 INFO L78 Accepts]: Start accepts. Automaton has 42269 states and 46399 transitions. Word has length 824 [2024-11-19 18:03:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:31,865 INFO L471 AbstractCegarLoop]: Abstraction has 42269 states and 46399 transitions. [2024-11-19 18:03:31,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 18:03:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 42269 states and 46399 transitions. [2024-11-19 18:03:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2024-11-19 18:03:31,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:31,892 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:31,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 18:03:31,893 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:31,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash 694363988, now seen corresponding path program 1 times [2024-11-19 18:03:31,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:31,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800669226] [2024-11-19 18:03:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:31,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 1342 proven. 0 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2024-11-19 18:03:32,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:32,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800669226] [2024-11-19 18:03:32,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800669226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:32,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:03:32,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:03:32,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435298131] [2024-11-19 18:03:32,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:32,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:03:32,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:03:32,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:03:32,556 INFO L87 Difference]: Start difference. First operand 42269 states and 46399 transitions. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 18:03:33,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:33,218 INFO L93 Difference]: Finished difference Result 79192 states and 86911 transitions. [2024-11-19 18:03:33,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:03:33,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 857 [2024-11-19 18:03:33,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:33,267 INFO L225 Difference]: With dead ends: 79192 [2024-11-19 18:03:33,268 INFO L226 Difference]: Without dead ends: 37293 [2024-11-19 18:03:33,289 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 18:03:33,290 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 75 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:33,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 342 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:03:33,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37293 states. [2024-11-19 18:03:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37293 to 35446. [2024-11-19 18:03:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35446 states, 35445 states have (on average 1.0882211877556778) internal successors, (38572), 35445 states have internal predecessors, (38572), 0 states have call successors, (0), 0 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 18:03:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35446 states to 35446 states and 38572 transitions. [2024-11-19 18:03:33,853 INFO L78 Accepts]: Start accepts. Automaton has 35446 states and 38572 transitions. Word has length 857 [2024-11-19 18:03:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:33,854 INFO L471 AbstractCegarLoop]: Abstraction has 35446 states and 38572 transitions. [2024-11-19 18:03:33,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 18:03:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 35446 states and 38572 transitions. [2024-11-19 18:03:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2024-11-19 18:03:33,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:33,895 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 18:03:33,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 18:03:33,895 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:33,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash -928684543, now seen corresponding path program 1 times [2024-11-19 18:03:33,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:33,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965136138] [2024-11-19 18:03:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:33,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:35,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1561 proven. 511 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-19 18:03:35,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:35,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965136138] [2024-11-19 18:03:35,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965136138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:03:35,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018259507] [2024-11-19 18:03:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:35,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:35,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:03:35,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:03:35,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 18:03:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:35,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:03:35,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:03:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 1056 proven. 0 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2024-11-19 18:03:35,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:03:35,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018259507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:35,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:03:35,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-11-19 18:03:35,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338291062] [2024-11-19 18:03:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:35,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:03:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:03:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-19 18:03:35,870 INFO L87 Difference]: Start difference. First operand 35446 states and 38572 transitions. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 18:03:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:36,934 INFO L93 Difference]: Finished difference Result 76792 states and 83723 transitions. [2024-11-19 18:03:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:03:36,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 883 [2024-11-19 18:03:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:36,973 INFO L225 Difference]: With dead ends: 76792 [2024-11-19 18:03:36,973 INFO L226 Difference]: Without dead ends: 41716 [2024-11-19 18:03:36,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-19 18:03:36,999 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 251 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:36,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 100 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:03:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41716 states. [2024-11-19 18:03:37,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41716 to 38582. [2024-11-19 18:03:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38582 states, 38581 states have (on average 1.0829423809647236) internal successors, (41781), 38581 states have internal predecessors, (41781), 0 states have call successors, (0), 0 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 18:03:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38582 states to 38582 states and 41781 transitions. [2024-11-19 18:03:37,764 INFO L78 Accepts]: Start accepts. Automaton has 38582 states and 41781 transitions. Word has length 883 [2024-11-19 18:03:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:37,764 INFO L471 AbstractCegarLoop]: Abstraction has 38582 states and 41781 transitions. [2024-11-19 18:03:37,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 18:03:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 38582 states and 41781 transitions. [2024-11-19 18:03:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2024-11-19 18:03:37,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:37,799 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:03:37,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 18:03:37,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 18:03:38,000 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:38,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:38,001 INFO L85 PathProgramCache]: Analyzing trace with hash -79103865, now seen corresponding path program 1 times [2024-11-19 18:03:38,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:38,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035381350] [2024-11-19 18:03:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:38,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1987 proven. 508 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-19 18:03:40,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:40,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035381350] [2024-11-19 18:03:40,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035381350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:03:40,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821629] [2024-11-19 18:03:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:40,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:40,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:03:40,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:03:40,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 18:03:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:40,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:03:40,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:03:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1924 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2024-11-19 18:03:40,432 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:03:40,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:40,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:03:40,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-11-19 18:03:40,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099058238] [2024-11-19 18:03:40,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:40,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:03:40,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:40,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:03:40,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:03:40,434 INFO L87 Difference]: Start difference. First operand 38582 states and 41781 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 18:03:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:41,670 INFO L93 Difference]: Finished difference Result 85631 states and 92717 transitions. [2024-11-19 18:03:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:03:41,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 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 960 [2024-11-19 18:03:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:41,722 INFO L225 Difference]: With dead ends: 85631 [2024-11-19 18:03:41,722 INFO L226 Difference]: Without dead ends: 47419 [2024-11-19 18:03:41,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 18:03:41,753 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 74 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:41,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 324 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:03:41,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47419 states. [2024-11-19 18:03:42,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47419 to 38767. [2024-11-19 18:03:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38767 states, 38766 states have (on average 1.0812567713976164) internal successors, (41916), 38766 states have internal predecessors, (41916), 0 states have call successors, (0), 0 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 18:03:42,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38767 states to 38767 states and 41916 transitions. [2024-11-19 18:03:42,257 INFO L78 Accepts]: Start accepts. Automaton has 38767 states and 41916 transitions. Word has length 960 [2024-11-19 18:03:42,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:42,258 INFO L471 AbstractCegarLoop]: Abstraction has 38767 states and 41916 transitions. [2024-11-19 18:03:42,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 18:03:42,258 INFO L276 IsEmpty]: Start isEmpty. Operand 38767 states and 41916 transitions. [2024-11-19 18:03:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2024-11-19 18:03:42,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:42,397 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:03:42,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 18:03:42,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:42,601 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:42,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:42,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1776183958, now seen corresponding path program 1 times [2024-11-19 18:03:42,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:42,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635056581] [2024-11-19 18:03:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:42,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1755 proven. 184 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2024-11-19 18:03:43,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:43,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635056581] [2024-11-19 18:03:43,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635056581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:03:43,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585831087] [2024-11-19 18:03:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:43,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:43,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:03:43,878 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:03:43,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 18:03:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:44,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 18:03:44,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:03:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 1627 proven. 434 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-11-19 18:03:44,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:03:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2609 backedges. 2061 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-11-19 18:03:44,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585831087] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 18:03:44,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 18:03:44,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 13 [2024-11-19 18:03:44,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648114208] [2024-11-19 18:03:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:44,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 18:03:44,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:44,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 18:03:44,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-19 18:03:44,998 INFO L87 Difference]: Start difference. First operand 38767 states and 41916 transitions. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 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 18:03:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:46,126 INFO L93 Difference]: Finished difference Result 89324 states and 96634 transitions. [2024-11-19 18:03:46,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:03:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 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 966 [2024-11-19 18:03:46,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:46,181 INFO L225 Difference]: With dead ends: 89324 [2024-11-19 18:03:46,181 INFO L226 Difference]: Without dead ends: 52767 [2024-11-19 18:03:46,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1938 GetRequests, 1926 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-19 18:03:46,207 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 241 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:46,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 67 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:03:46,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52767 states. [2024-11-19 18:03:46,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52767 to 51663. [2024-11-19 18:03:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51663 states, 51662 states have (on average 1.0804459757655531) internal successors, (55818), 51662 states have internal predecessors, (55818), 0 states have call successors, (0), 0 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 18:03:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51663 states to 51663 states and 55818 transitions. [2024-11-19 18:03:46,980 INFO L78 Accepts]: Start accepts. Automaton has 51663 states and 55818 transitions. Word has length 966 [2024-11-19 18:03:46,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:46,981 INFO L471 AbstractCegarLoop]: Abstraction has 51663 states and 55818 transitions. [2024-11-19 18:03:46,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 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 18:03:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 51663 states and 55818 transitions. [2024-11-19 18:03:47,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2024-11-19 18:03:47,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:47,015 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:03:47,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 18:03:47,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 18:03:47,216 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:47,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash 262123258, now seen corresponding path program 1 times [2024-11-19 18:03:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:47,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868378213] [2024-11-19 18:03:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:47,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3153 backedges. 2055 proven. 0 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2024-11-19 18:03:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:47,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868378213] [2024-11-19 18:03:47,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868378213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:03:47,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:03:47,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:03:47,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699590943] [2024-11-19 18:03:47,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:03:47,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:03:47,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:03:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:03:47,747 INFO L87 Difference]: Start difference. First operand 51663 states and 55818 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 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 18:03:48,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:03:48,395 INFO L93 Difference]: Finished difference Result 88216 states and 95384 transitions. [2024-11-19 18:03:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:03:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 1024 [2024-11-19 18:03:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:03:48,441 INFO L225 Difference]: With dead ends: 88216 [2024-11-19 18:03:48,441 INFO L226 Difference]: Without dead ends: 39131 [2024-11-19 18:03:48,463 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 18:03:48,464 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 97 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 18:03:48,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 285 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 18:03:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39131 states. [2024-11-19 18:03:48,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39131 to 37468. [2024-11-19 18:03:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37468 states, 37467 states have (on average 1.0766274321402836) internal successors, (40338), 37467 states have internal predecessors, (40338), 0 states have call successors, (0), 0 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 18:03:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37468 states to 37468 states and 40338 transitions. [2024-11-19 18:03:49,028 INFO L78 Accepts]: Start accepts. Automaton has 37468 states and 40338 transitions. Word has length 1024 [2024-11-19 18:03:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:03:49,029 INFO L471 AbstractCegarLoop]: Abstraction has 37468 states and 40338 transitions. [2024-11-19 18:03:49,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 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 18:03:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 37468 states and 40338 transitions. [2024-11-19 18:03:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2024-11-19 18:03:49,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:03:49,155 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 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 18:03:49,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 18:03:49,155 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:03:49,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:03:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash 919653917, now seen corresponding path program 1 times [2024-11-19 18:03:49,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:03:49,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250516298] [2024-11-19 18:03:49,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:49,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:03:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 2272 proven. 735 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2024-11-19 18:03:51,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:03:51,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250516298] [2024-11-19 18:03:51,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250516298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:03:51,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596851640] [2024-11-19 18:03:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:03:51,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:03:51,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:03:51,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:03:51,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 18:03:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:03:51,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 18:03:51,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:03:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 2063 proven. 221 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2024-11-19 18:03:52,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:03:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3450 backedges. 1928 proven. 192 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2024-11-19 18:03:53,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596851640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:03:53,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:03:53,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 16 [2024-11-19 18:03:53,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328920354] [2024-11-19 18:03:53,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:03:53,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 18:03:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:03:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 18:03:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-19 18:03:53,960 INFO L87 Difference]: Start difference. First operand 37468 states and 40338 transitions. Second operand has 16 states, 16 states have (on average 103.375) internal successors, (1654), 16 states have internal predecessors, (1654), 0 states have call successors, (0), 0 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 18:04:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:01,202 INFO L93 Difference]: Finished difference Result 92224 states and 99192 transitions. [2024-11-19 18:04:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 18:04:01,203 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 103.375) internal successors, (1654), 16 states have internal predecessors, (1654), 0 states have call successors, (0), 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 1078 [2024-11-19 18:04:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:01,206 INFO L225 Difference]: With dead ends: 92224 [2024-11-19 18:04:01,206 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 18:04:01,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2198 GetRequests, 2167 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 18:04:01,232 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 1855 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 14986 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 15488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 14986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:01,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1855 Valid, 334 Invalid, 15488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 14986 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-19 18:04:01,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 18:04:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 18:04:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 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 18:04:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 18:04:01,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1078 [2024-11-19 18:04:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:01,235 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 18:04:01,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 103.375) internal successors, (1654), 16 states have internal predecessors, (1654), 0 states have call successors, (0), 0 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 18:04:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 18:04:01,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 18:04:01,239 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 18:04:01,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 18:04:01,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:01,447 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:01,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.