/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:17:24,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:17:24,599 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:17:24,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:17:24,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:17:24,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:17:24,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:17:24,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:17:24,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:17:24,623 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:17:24,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:17:24,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:17:24,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:17:24,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:17:24,625 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:17:24,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:17:24,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:17:24,626 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:17:24,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:17:24,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:17:24,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:17:24,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:17:24,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:17:24,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:17:24,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:17:24,629 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:17:24,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:17:24,630 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:17:24,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:17:24,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:17:24,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:17:24,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:17:24,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:17:24,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:17:24,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:17:24,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:17:24,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:17:24,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:17:24,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:17:24,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:17:24,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:17:24,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:17:24,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:17:24,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:17:24,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:17:24,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:17:24,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:17:24,867 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:17:24,868 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:17:24,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2023-12-16 01:17:26,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:17:26,377 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:17:26,378 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2023-12-16 01:17:26,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810dbc204/aff880189ead4bd0a1e99bfe34463921/FLAG957bbeace [2023-12-16 01:17:26,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810dbc204/aff880189ead4bd0a1e99bfe34463921 [2023-12-16 01:17:26,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:17:26,417 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:17:26,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:17:26,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:17:26,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:17:26,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:17:26" (1/1) ... [2023-12-16 01:17:26,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c2544e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:26, skipping insertion in model container [2023-12-16 01:17:26,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:17:26" (1/1) ... [2023-12-16 01:17:26,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:17:27,001 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label17.c[61094,61107] [2023-12-16 01:17:27,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:17:27,052 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:17:27,252 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label17.c[61094,61107] [2023-12-16 01:17:27,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:17:27,277 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:17:27,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27 WrapperNode [2023-12-16 01:17:27,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:17:27,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:17:27,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:17:27,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:17:27,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,433 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-16 01:17:27,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:17:27,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:17:27,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:17:27,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:17:27,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,508 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]. [2023-12-16 01:17:27,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,552 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:17:27,615 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:17:27,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:17:27,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:17:27,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (1/1) ... [2023-12-16 01:17:27,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:17:27,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:27,646 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) [2023-12-16 01:17:27,668 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 [2023-12-16 01:17:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:17:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:17:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:17:27,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:17:27,778 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:17:27,781 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:17:29,438 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:17:29,502 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:17:29,502 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:17:29,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:17:29 BoogieIcfgContainer [2023-12-16 01:17:29,503 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:17:29,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:17:29,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:17:29,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:17:29,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:17:26" (1/3) ... [2023-12-16 01:17:29,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18104a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:17:29, skipping insertion in model container [2023-12-16 01:17:29,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:17:27" (2/3) ... [2023-12-16 01:17:29,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18104a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:17:29, skipping insertion in model container [2023-12-16 01:17:29,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:17:29" (3/3) ... [2023-12-16 01:17:29,510 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label17.c [2023-12-16 01:17:29,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:17:29,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:17:29,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:17:29,590 INFO L357 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, mHoare=true, 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;@2caac0f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:17:29,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:17:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-16 01:17:29,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:29,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:29,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:29,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1782304588, now seen corresponding path program 1 times [2023-12-16 01:17:29,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:29,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114844784] [2023-12-16 01:17:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:29,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:30,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:30,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114844784] [2023-12-16 01:17:30,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114844784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:30,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:30,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:30,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86744571] [2023-12-16 01:17:30,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:30,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:17:30,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:30,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:17:30,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:17:30,214 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:30,270 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-16 01:17:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:17:30,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-16 01:17:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:30,287 INFO L225 Difference]: With dead ends: 479 [2023-12-16 01:17:30,288 INFO L226 Difference]: Without dead ends: 238 [2023-12-16 01:17:30,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:17:30,294 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:30,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:17:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-16 01:17:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-16 01:17:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-16 01:17:30,340 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 198 [2023-12-16 01:17:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:30,343 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-16 01:17:30,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-16 01:17:30,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-16 01:17:30,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:30,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:30,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:17:30,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:30,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1100314422, now seen corresponding path program 1 times [2023-12-16 01:17:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:30,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307287006] [2023-12-16 01:17:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:30,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307287006] [2023-12-16 01:17:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307287006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:30,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:30,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:30,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019492835] [2023-12-16 01:17:30,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:30,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:30,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:30,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:30,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:30,810 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:31,701 INFO L93 Difference]: Finished difference Result 698 states and 1151 transitions. [2023-12-16 01:17:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:31,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-16 01:17:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:31,705 INFO L225 Difference]: With dead ends: 698 [2023-12-16 01:17:31,705 INFO L226 Difference]: Without dead ends: 461 [2023-12-16 01:17:31,706 INFO L412 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 [2023-12-16 01:17:31,707 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 57 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:31,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 148 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:17:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-12-16 01:17:31,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 459. [2023-12-16 01:17:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.539301310043668) internal successors, (705), 458 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 705 transitions. [2023-12-16 01:17:31,730 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 705 transitions. Word has length 198 [2023-12-16 01:17:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:31,731 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 705 transitions. [2023-12-16 01:17:31,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 705 transitions. [2023-12-16 01:17:31,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-16 01:17:31,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:31,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:31,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:17:31,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:31,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:31,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2109463113, now seen corresponding path program 1 times [2023-12-16 01:17:31,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:31,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313154532] [2023-12-16 01:17:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:31,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:31,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:31,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313154532] [2023-12-16 01:17:31,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313154532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:31,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:31,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:31,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188955740] [2023-12-16 01:17:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:31,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:31,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:31,937 INFO L87 Difference]: Start difference. First operand 459 states and 705 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) [2023-12-16 01:17:32,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:32,712 INFO L93 Difference]: Finished difference Result 1343 states and 2078 transitions. [2023-12-16 01:17:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:32,716 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 206 [2023-12-16 01:17:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:32,720 INFO L225 Difference]: With dead ends: 1343 [2023-12-16 01:17:32,720 INFO L226 Difference]: Without dead ends: 885 [2023-12-16 01:17:32,722 INFO L412 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 [2023-12-16 01:17:32,723 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:32,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 90 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-16 01:17:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 869. [2023-12-16 01:17:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 1.512672811059908) internal successors, (1313), 868 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:32,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1313 transitions. [2023-12-16 01:17:32,746 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1313 transitions. Word has length 206 [2023-12-16 01:17:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:32,746 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1313 transitions. [2023-12-16 01:17:32,747 INFO L496 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) [2023-12-16 01:17:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1313 transitions. [2023-12-16 01:17:32,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-16 01:17:32,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:32,750 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:32,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:17:32,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:32,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:32,751 INFO L85 PathProgramCache]: Analyzing trace with hash -374806736, now seen corresponding path program 1 times [2023-12-16 01:17:32,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:32,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927162285] [2023-12-16 01:17:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:32,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:17:33,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:33,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927162285] [2023-12-16 01:17:33,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927162285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:33,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:33,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:17:33,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176579744] [2023-12-16 01:17:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:33,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:33,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:33,027 INFO L87 Difference]: Start difference. First operand 869 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:33,784 INFO L93 Difference]: Finished difference Result 2553 states and 3868 transitions. [2023-12-16 01:17:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:33,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 218 [2023-12-16 01:17:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:33,790 INFO L225 Difference]: With dead ends: 2553 [2023-12-16 01:17:33,790 INFO L226 Difference]: Without dead ends: 1685 [2023-12-16 01:17:33,791 INFO L412 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 [2023-12-16 01:17:33,792 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 233 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:33,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 413 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2023-12-16 01:17:33,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1683. [2023-12-16 01:17:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.3370986920332937) internal successors, (2249), 1682 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2249 transitions. [2023-12-16 01:17:33,824 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2249 transitions. Word has length 218 [2023-12-16 01:17:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:33,824 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2249 transitions. [2023-12-16 01:17:33,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:33,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2249 transitions. [2023-12-16 01:17:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-16 01:17:33,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:33,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:33,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:17:33,830 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:33,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2000752269, now seen corresponding path program 1 times [2023-12-16 01:17:33,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:33,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522680072] [2023-12-16 01:17:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:33,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:34,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:34,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522680072] [2023-12-16 01:17:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522680072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:34,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:34,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937034433] [2023-12-16 01:17:34,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:34,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:34,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:34,152 INFO L87 Difference]: Start difference. First operand 1683 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:34,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:34,786 INFO L93 Difference]: Finished difference Result 5016 states and 6709 transitions. [2023-12-16 01:17:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:34,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2023-12-16 01:17:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:34,799 INFO L225 Difference]: With dead ends: 5016 [2023-12-16 01:17:34,799 INFO L226 Difference]: Without dead ends: 3334 [2023-12-16 01:17:34,802 INFO L412 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 [2023-12-16 01:17:34,805 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:34,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 121 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2023-12-16 01:17:34,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3325. [2023-12-16 01:17:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 1.3237063778580025) internal successors, (4400), 3324 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4400 transitions. [2023-12-16 01:17:34,881 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4400 transitions. Word has length 221 [2023-12-16 01:17:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:34,882 INFO L495 AbstractCegarLoop]: Abstraction has 3325 states and 4400 transitions. [2023-12-16 01:17:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4400 transitions. [2023-12-16 01:17:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-16 01:17:34,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:34,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:34,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:17:34,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:34,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1209351989, now seen corresponding path program 1 times [2023-12-16 01:17:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:34,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637575237] [2023-12-16 01:17:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:35,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:35,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637575237] [2023-12-16 01:17:35,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637575237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:35,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:35,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:35,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138074831] [2023-12-16 01:17:35,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:35,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:35,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:35,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:35,175 INFO L87 Difference]: Start difference. First operand 3325 states and 4400 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:35,834 INFO L93 Difference]: Finished difference Result 9925 states and 13149 transitions. [2023-12-16 01:17:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:35,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2023-12-16 01:17:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:35,860 INFO L225 Difference]: With dead ends: 9925 [2023-12-16 01:17:35,861 INFO L226 Difference]: Without dead ends: 6601 [2023-12-16 01:17:35,867 INFO L412 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 [2023-12-16 01:17:35,871 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 217 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:35,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 166 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:35,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6601 states. [2023-12-16 01:17:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6601 to 5767. [2023-12-16 01:17:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 1.3371488033298646) internal successors, (7710), 5766 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 7710 transitions. [2023-12-16 01:17:36,053 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 7710 transitions. Word has length 224 [2023-12-16 01:17:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:36,054 INFO L495 AbstractCegarLoop]: Abstraction has 5767 states and 7710 transitions. [2023-12-16 01:17:36,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 7710 transitions. [2023-12-16 01:17:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-16 01:17:36,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:36,068 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:36,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:17:36,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:36,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash 821409665, now seen corresponding path program 1 times [2023-12-16 01:17:36,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:36,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363081857] [2023-12-16 01:17:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:36,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 01:17:36,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:36,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363081857] [2023-12-16 01:17:36,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363081857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:36,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:36,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574530475] [2023-12-16 01:17:36,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:36,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:36,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:36,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:36,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:36,497 INFO L87 Difference]: Start difference. First operand 5767 states and 7710 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:37,251 INFO L93 Difference]: Finished difference Result 15633 states and 21104 transitions. [2023-12-16 01:17:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:37,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 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 [2023-12-16 01:17:37,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:37,288 INFO L225 Difference]: With dead ends: 15633 [2023-12-16 01:17:37,288 INFO L226 Difference]: Without dead ends: 9867 [2023-12-16 01:17:37,297 INFO L412 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 [2023-12-16 01:17:37,300 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:37,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 186 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9867 states. [2023-12-16 01:17:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9867 to 9642. [2023-12-16 01:17:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9642 states, 9641 states have (on average 1.3567057359195105) internal successors, (13080), 9641 states have internal predecessors, (13080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9642 states to 9642 states and 13080 transitions. [2023-12-16 01:17:37,516 INFO L78 Accepts]: Start accepts. Automaton has 9642 states and 13080 transitions. Word has length 233 [2023-12-16 01:17:37,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:37,516 INFO L495 AbstractCegarLoop]: Abstraction has 9642 states and 13080 transitions. [2023-12-16 01:17:37,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 9642 states and 13080 transitions. [2023-12-16 01:17:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-16 01:17:37,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:37,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:37,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:17:37,535 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:37,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1965215310, now seen corresponding path program 1 times [2023-12-16 01:17:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:37,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760229727] [2023-12-16 01:17:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:37,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:37,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:37,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760229727] [2023-12-16 01:17:37,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760229727] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:37,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843768333] [2023-12-16 01:17:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:37,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:37,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:37,948 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) [2023-12-16 01:17:37,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:17:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:38,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 01:17:38,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:17:38,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:38,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843768333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:38,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:38,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:17:38,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233917121] [2023-12-16 01:17:38,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:38,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:38,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:38,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:38,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:38,353 INFO L87 Difference]: Start difference. First operand 9642 states and 13080 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:39,201 INFO L93 Difference]: Finished difference Result 25377 states and 34356 transitions. [2023-12-16 01:17:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:39,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2023-12-16 01:17:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:39,258 INFO L225 Difference]: With dead ends: 25377 [2023-12-16 01:17:39,259 INFO L226 Difference]: Without dead ends: 15736 [2023-12-16 01:17:39,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:39,275 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 73 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:39,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 393 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15736 states. [2023-12-16 01:17:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15736 to 15329. [2023-12-16 01:17:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15329 states, 15328 states have (on average 1.289339770354906) internal successors, (19763), 15328 states have internal predecessors, (19763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15329 states to 15329 states and 19763 transitions. [2023-12-16 01:17:39,568 INFO L78 Accepts]: Start accepts. Automaton has 15329 states and 19763 transitions. Word has length 236 [2023-12-16 01:17:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:39,568 INFO L495 AbstractCegarLoop]: Abstraction has 15329 states and 19763 transitions. [2023-12-16 01:17:39,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:39,569 INFO L276 IsEmpty]: Start isEmpty. Operand 15329 states and 19763 transitions. [2023-12-16 01:17:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-16 01:17:39,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:39,592 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:39,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 01:17:39,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:39,800 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:39,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:39,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1098418408, now seen corresponding path program 1 times [2023-12-16 01:17:39,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:39,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840514014] [2023-12-16 01:17:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:39,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 01:17:40,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:40,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840514014] [2023-12-16 01:17:40,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840514014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:40,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:40,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243147973] [2023-12-16 01:17:40,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:40,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:40,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:40,251 INFO L87 Difference]: Start difference. First operand 15329 states and 19763 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:41,175 INFO L93 Difference]: Finished difference Result 34731 states and 44707 transitions. [2023-12-16 01:17:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 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 [2023-12-16 01:17:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:41,217 INFO L225 Difference]: With dead ends: 34731 [2023-12-16 01:17:41,217 INFO L226 Difference]: Without dead ends: 19810 [2023-12-16 01:17:41,234 INFO L412 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 [2023-12-16 01:17:41,236 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 204 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:41,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 171 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:17:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19810 states. [2023-12-16 01:17:41,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19810 to 19795. [2023-12-16 01:17:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19795 states, 19794 states have (on average 1.2689198747095078) internal successors, (25117), 19794 states have internal predecessors, (25117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19795 states to 19795 states and 25117 transitions. [2023-12-16 01:17:41,545 INFO L78 Accepts]: Start accepts. Automaton has 19795 states and 25117 transitions. Word has length 243 [2023-12-16 01:17:41,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:41,545 INFO L495 AbstractCegarLoop]: Abstraction has 19795 states and 25117 transitions. [2023-12-16 01:17:41,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 19795 states and 25117 transitions. [2023-12-16 01:17:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-16 01:17:41,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:41,577 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:41,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:17:41,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:41,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1166324119, now seen corresponding path program 1 times [2023-12-16 01:17:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520516998] [2023-12-16 01:17:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 01:17:41,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:41,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520516998] [2023-12-16 01:17:41,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520516998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:41,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:41,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:41,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21603171] [2023-12-16 01:17:41,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:41,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:41,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:41,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:41,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:41,984 INFO L87 Difference]: Start difference. First operand 19795 states and 25117 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:42,859 INFO L93 Difference]: Finished difference Result 43672 states and 55132 transitions. [2023-12-16 01:17:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:42,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 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 244 [2023-12-16 01:17:42,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:42,916 INFO L225 Difference]: With dead ends: 43672 [2023-12-16 01:17:42,916 INFO L226 Difference]: Without dead ends: 24691 [2023-12-16 01:17:42,944 INFO L412 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 [2023-12-16 01:17:42,944 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 211 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:42,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 194 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24691 states. [2023-12-16 01:17:43,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24691 to 24671. [2023-12-16 01:17:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24671 states, 24670 states have (on average 1.2531414673692745) internal successors, (30915), 24670 states have internal predecessors, (30915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:43,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24671 states to 24671 states and 30915 transitions. [2023-12-16 01:17:43,342 INFO L78 Accepts]: Start accepts. Automaton has 24671 states and 30915 transitions. Word has length 244 [2023-12-16 01:17:43,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:43,342 INFO L495 AbstractCegarLoop]: Abstraction has 24671 states and 30915 transitions. [2023-12-16 01:17:43,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:43,343 INFO L276 IsEmpty]: Start isEmpty. Operand 24671 states and 30915 transitions. [2023-12-16 01:17:43,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-16 01:17:43,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:43,384 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:43,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 01:17:43,384 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:43,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1614038747, now seen corresponding path program 1 times [2023-12-16 01:17:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598999523] [2023-12-16 01:17:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 01:17:43,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:43,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598999523] [2023-12-16 01:17:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598999523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:43,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:43,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:17:43,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220954644] [2023-12-16 01:17:43,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:43,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:43,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:43,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:43,742 INFO L87 Difference]: Start difference. First operand 24671 states and 30915 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:44,750 INFO L93 Difference]: Finished difference Result 54428 states and 68083 transitions. [2023-12-16 01:17:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:44,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2023-12-16 01:17:44,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:44,806 INFO L225 Difference]: With dead ends: 54428 [2023-12-16 01:17:44,806 INFO L226 Difference]: Without dead ends: 30977 [2023-12-16 01:17:44,831 INFO L412 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 [2023-12-16 01:17:44,832 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 203 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:44,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 420 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:17:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30977 states. [2023-12-16 01:17:45,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30977 to 29754. [2023-12-16 01:17:45,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29754 states, 29753 states have (on average 1.2304641548751387) internal successors, (36610), 29753 states have internal predecessors, (36610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29754 states to 29754 states and 36610 transitions. [2023-12-16 01:17:45,386 INFO L78 Accepts]: Start accepts. Automaton has 29754 states and 36610 transitions. Word has length 246 [2023-12-16 01:17:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:45,386 INFO L495 AbstractCegarLoop]: Abstraction has 29754 states and 36610 transitions. [2023-12-16 01:17:45,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:45,386 INFO L276 IsEmpty]: Start isEmpty. Operand 29754 states and 36610 transitions. [2023-12-16 01:17:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-16 01:17:45,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:45,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:45,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:17:45,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:45,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:45,413 INFO L85 PathProgramCache]: Analyzing trace with hash 534659817, now seen corresponding path program 1 times [2023-12-16 01:17:45,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:45,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630801172] [2023-12-16 01:17:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:45,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 01:17:45,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:45,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630801172] [2023-12-16 01:17:45,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630801172] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:45,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495716729] [2023-12-16 01:17:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:45,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:45,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:45,840 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) [2023-12-16 01:17:45,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:17:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:46,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:17:46,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 01:17:46,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:46,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495716729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:46,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:46,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-16 01:17:46,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63108107] [2023-12-16 01:17:46,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:46,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:46,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:46,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:46,185 INFO L87 Difference]: Start difference. First operand 29754 states and 36610 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:46,929 INFO L93 Difference]: Finished difference Result 57476 states and 70706 transitions. [2023-12-16 01:17:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:46,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2023-12-16 01:17:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:46,974 INFO L225 Difference]: With dead ends: 57476 [2023-12-16 01:17:46,974 INFO L226 Difference]: Without dead ends: 28739 [2023-12-16 01:17:46,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:47,000 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 235 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:47,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 135 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:47,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28739 states. [2023-12-16 01:17:47,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28739 to 26909. [2023-12-16 01:17:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26909 states, 26908 states have (on average 1.202058867251375) internal successors, (32345), 26908 states have internal predecessors, (32345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26909 states to 26909 states and 32345 transitions. [2023-12-16 01:17:47,463 INFO L78 Accepts]: Start accepts. Automaton has 26909 states and 32345 transitions. Word has length 250 [2023-12-16 01:17:47,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:47,463 INFO L495 AbstractCegarLoop]: Abstraction has 26909 states and 32345 transitions. [2023-12-16 01:17:47,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 26909 states and 32345 transitions. [2023-12-16 01:17:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-16 01:17:47,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:47,486 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:47,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 01:17:47,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 01:17:47,692 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:47,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:47,693 INFO L85 PathProgramCache]: Analyzing trace with hash -637914746, now seen corresponding path program 1 times [2023-12-16 01:17:47,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:47,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181190735] [2023-12-16 01:17:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:47,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 01:17:48,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:48,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181190735] [2023-12-16 01:17:48,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181190735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:48,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:48,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:48,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729544146] [2023-12-16 01:17:48,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:48,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:48,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:48,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:48,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:48,261 INFO L87 Difference]: Start difference. First operand 26909 states and 32345 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 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) [2023-12-16 01:17:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:49,119 INFO L93 Difference]: Finished difference Result 58717 states and 70303 transitions. [2023-12-16 01:17:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:49,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 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 252 [2023-12-16 01:17:49,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:49,164 INFO L225 Difference]: With dead ends: 58717 [2023-12-16 01:17:49,164 INFO L226 Difference]: Without dead ends: 32825 [2023-12-16 01:17:49,190 INFO L412 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 [2023-12-16 01:17:49,190 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 194 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:49,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 186 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32825 states. [2023-12-16 01:17:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32825 to 32812. [2023-12-16 01:17:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32812 states, 32811 states have (on average 1.1897839139313036) internal successors, (39038), 32811 states have internal predecessors, (39038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32812 states to 32812 states and 39038 transitions. [2023-12-16 01:17:49,837 INFO L78 Accepts]: Start accepts. Automaton has 32812 states and 39038 transitions. Word has length 252 [2023-12-16 01:17:49,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:49,838 INFO L495 AbstractCegarLoop]: Abstraction has 32812 states and 39038 transitions. [2023-12-16 01:17:49,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 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) [2023-12-16 01:17:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 32812 states and 39038 transitions. [2023-12-16 01:17:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-16 01:17:49,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:49,867 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:49,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:17:49,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:49,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:49,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1175265493, now seen corresponding path program 2 times [2023-12-16 01:17:49,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:49,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625747988] [2023-12-16 01:17:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:49,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-16 01:17:50,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:50,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625747988] [2023-12-16 01:17:50,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625747988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:50,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:50,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:17:50,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60502640] [2023-12-16 01:17:50,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:50,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:50,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:50,059 INFO L87 Difference]: Start difference. First operand 32812 states and 39038 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:50,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:50,591 INFO L93 Difference]: Finished difference Result 91914 states and 109451 transitions. [2023-12-16 01:17:50,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:50,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 259 [2023-12-16 01:17:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:50,678 INFO L225 Difference]: With dead ends: 91914 [2023-12-16 01:17:50,678 INFO L226 Difference]: Without dead ends: 60728 [2023-12-16 01:17:50,712 INFO L412 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 [2023-12-16 01:17:50,713 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 331 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:50,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 963 Invalid, 187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 01:17:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60728 states. [2023-12-16 01:17:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60728 to 60725. [2023-12-16 01:17:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60725 states, 60724 states have (on average 1.1736875041169883) internal successors, (71271), 60724 states have internal predecessors, (71271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60725 states to 60725 states and 71271 transitions. [2023-12-16 01:17:51,657 INFO L78 Accepts]: Start accepts. Automaton has 60725 states and 71271 transitions. Word has length 259 [2023-12-16 01:17:51,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:51,657 INFO L495 AbstractCegarLoop]: Abstraction has 60725 states and 71271 transitions. [2023-12-16 01:17:51,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 60725 states and 71271 transitions. [2023-12-16 01:17:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-16 01:17:51,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:51,705 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:51,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:17:51,706 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:51,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1560097233, now seen corresponding path program 1 times [2023-12-16 01:17:51,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:51,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119864538] [2023-12-16 01:17:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:51,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 73 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 01:17:52,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:52,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119864538] [2023-12-16 01:17:52,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119864538] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:17:52,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198574356] [2023-12-16 01:17:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:52,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:52,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:17:52,238 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) [2023-12-16 01:17:52,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 01:17:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:52,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 01:17:52,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:17:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:17:52,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:17:52,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198574356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:52,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:17:52,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:17:52,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191364001] [2023-12-16 01:17:52,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:52,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:52,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:52,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:52,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:52,523 INFO L87 Difference]: Start difference. First operand 60725 states and 71271 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:53,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:53,565 INFO L93 Difference]: Finished difference Result 114713 states and 134560 transitions. [2023-12-16 01:17:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:53,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 266 [2023-12-16 01:17:53,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:53,643 INFO L225 Difference]: With dead ends: 114713 [2023-12-16 01:17:53,643 INFO L226 Difference]: Without dead ends: 55208 [2023-12-16 01:17:53,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:17:53,667 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 248 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:53,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 378 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:53,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55208 states. [2023-12-16 01:17:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55208 to 52768. [2023-12-16 01:17:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52768 states, 52767 states have (on average 1.1395379688062615) internal successors, (60130), 52767 states have internal predecessors, (60130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52768 states to 52768 states and 60130 transitions. [2023-12-16 01:17:54,448 INFO L78 Accepts]: Start accepts. Automaton has 52768 states and 60130 transitions. Word has length 266 [2023-12-16 01:17:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:54,448 INFO L495 AbstractCegarLoop]: Abstraction has 52768 states and 60130 transitions. [2023-12-16 01:17:54,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 52768 states and 60130 transitions. [2023-12-16 01:17:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-16 01:17:54,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:54,485 INFO L195 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:54,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 01:17:54,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:17:54,691 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:54,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash -34169011, now seen corresponding path program 1 times [2023-12-16 01:17:54,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:54,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567387783] [2023-12-16 01:17:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:54,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 01:17:55,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567387783] [2023-12-16 01:17:55,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567387783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:55,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:55,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358169419] [2023-12-16 01:17:55,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:55,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:55,032 INFO L87 Difference]: Start difference. First operand 52768 states and 60130 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 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) [2023-12-16 01:17:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:56,104 INFO L93 Difference]: Finished difference Result 118121 states and 135473 transitions. [2023-12-16 01:17:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:56,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 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 268 [2023-12-16 01:17:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:56,187 INFO L225 Difference]: With dead ends: 118121 [2023-12-16 01:17:56,187 INFO L226 Difference]: Without dead ends: 66777 [2023-12-16 01:17:56,221 INFO L412 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 [2023-12-16 01:17:56,222 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 203 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:56,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 164 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:17:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66777 states. [2023-12-16 01:17:57,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66777 to 64743. [2023-12-16 01:17:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64743 states, 64742 states have (on average 1.1198758147724814) internal successors, (72503), 64742 states have internal predecessors, (72503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64743 states to 64743 states and 72503 transitions. [2023-12-16 01:17:57,254 INFO L78 Accepts]: Start accepts. Automaton has 64743 states and 72503 transitions. Word has length 268 [2023-12-16 01:17:57,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:57,254 INFO L495 AbstractCegarLoop]: Abstraction has 64743 states and 72503 transitions. [2023-12-16 01:17:57,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 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) [2023-12-16 01:17:57,255 INFO L276 IsEmpty]: Start isEmpty. Operand 64743 states and 72503 transitions. [2023-12-16 01:17:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-16 01:17:57,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:17:57,290 INFO L195 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:17:57,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 01:17:57,291 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:17:57,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:17:57,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1631254998, now seen corresponding path program 1 times [2023-12-16 01:17:57,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:17:57,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409681745] [2023-12-16 01:17:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:17:57,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:17:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:17:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:17:57,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:17:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409681745] [2023-12-16 01:17:57,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409681745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:17:57,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:17:57,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:17:57,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955620773] [2023-12-16 01:17:57,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:17:57,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:17:57,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:17:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:17:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:17:57,970 INFO L87 Difference]: Start difference. First operand 64743 states and 72503 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:17:58,942 INFO L93 Difference]: Finished difference Result 132751 states and 148425 transitions. [2023-12-16 01:17:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:17:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2023-12-16 01:17:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:17:59,032 INFO L225 Difference]: With dead ends: 132751 [2023-12-16 01:17:59,032 INFO L226 Difference]: Without dead ends: 69838 [2023-12-16 01:17:59,052 INFO L412 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 [2023-12-16 01:17:59,053 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 144 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:17:59,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 203 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:17:59,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69838 states. [2023-12-16 01:17:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69838 to 69625. [2023-12-16 01:17:59,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69625 states, 69624 states have (on average 1.1156928645294726) internal successors, (77679), 69624 states have internal predecessors, (77679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69625 states to 69625 states and 77679 transitions. [2023-12-16 01:17:59,960 INFO L78 Accepts]: Start accepts. Automaton has 69625 states and 77679 transitions. Word has length 272 [2023-12-16 01:17:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:17:59,960 INFO L495 AbstractCegarLoop]: Abstraction has 69625 states and 77679 transitions. [2023-12-16 01:17:59,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:17:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 69625 states and 77679 transitions. [2023-12-16 01:18:00,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-16 01:18:00,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:18:00,001 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:18:00,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 01:18:00,001 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:18:00,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:18:00,002 INFO L85 PathProgramCache]: Analyzing trace with hash 402824193, now seen corresponding path program 1 times [2023-12-16 01:18:00,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:18:00,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458032879] [2023-12-16 01:18:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:00,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:18:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-16 01:18:00,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:18:00,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458032879] [2023-12-16 01:18:00,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458032879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:18:00,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:18:00,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:18:00,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107451459] [2023-12-16 01:18:00,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:18:00,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:18:00,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:18:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:18:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:18:00,561 INFO L87 Difference]: Start difference. First operand 69625 states and 77679 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:01,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:18:01,566 INFO L93 Difference]: Finished difference Result 140079 states and 156386 transitions. [2023-12-16 01:18:01,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:18:01,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 306 [2023-12-16 01:18:01,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:18:01,664 INFO L225 Difference]: With dead ends: 140079 [2023-12-16 01:18:01,664 INFO L226 Difference]: Without dead ends: 71880 [2023-12-16 01:18:01,702 INFO L412 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 [2023-12-16 01:18:01,702 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 214 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:18:01,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 388 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:18:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71880 states. [2023-12-16 01:18:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71880 to 59055. [2023-12-16 01:18:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59055 states, 59054 states have (on average 1.1195177295356793) internal successors, (66112), 59054 states have internal predecessors, (66112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59055 states to 59055 states and 66112 transitions. [2023-12-16 01:18:02,634 INFO L78 Accepts]: Start accepts. Automaton has 59055 states and 66112 transitions. Word has length 306 [2023-12-16 01:18:02,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:18:02,634 INFO L495 AbstractCegarLoop]: Abstraction has 59055 states and 66112 transitions. [2023-12-16 01:18:02,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 59055 states and 66112 transitions. [2023-12-16 01:18:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-16 01:18:02,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:18:02,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:18:02,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 01:18:02,679 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:18:02,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:18:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash -71841901, now seen corresponding path program 1 times [2023-12-16 01:18:02,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:18:02,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934750792] [2023-12-16 01:18:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:02,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:18:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-16 01:18:03,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:18:03,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934750792] [2023-12-16 01:18:03,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934750792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:18:03,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:18:03,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:18:03,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401893839] [2023-12-16 01:18:03,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:18:03,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:18:03,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:18:03,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:18:03,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:18:03,180 INFO L87 Difference]: Start difference. First operand 59055 states and 66112 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 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) [2023-12-16 01:18:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:18:04,284 INFO L93 Difference]: Finished difference Result 138074 states and 154675 transitions. [2023-12-16 01:18:04,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:18:04,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 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 306 [2023-12-16 01:18:04,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:18:04,375 INFO L225 Difference]: With dead ends: 138074 [2023-12-16 01:18:04,375 INFO L226 Difference]: Without dead ends: 83900 [2023-12-16 01:18:04,408 INFO L412 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 [2023-12-16 01:18:04,408 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 240 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:18:04,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 211 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:18:04,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83900 states. [2023-12-16 01:18:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83900 to 83470. [2023-12-16 01:18:05,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83470 states, 83469 states have (on average 1.1168337945824198) internal successors, (93221), 83469 states have internal predecessors, (93221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:05,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83470 states to 83470 states and 93221 transitions. [2023-12-16 01:18:05,527 INFO L78 Accepts]: Start accepts. Automaton has 83470 states and 93221 transitions. Word has length 306 [2023-12-16 01:18:05,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:18:05,527 INFO L495 AbstractCegarLoop]: Abstraction has 83470 states and 93221 transitions. [2023-12-16 01:18:05,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 2 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) [2023-12-16 01:18:05,527 INFO L276 IsEmpty]: Start isEmpty. Operand 83470 states and 93221 transitions. [2023-12-16 01:18:05,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-16 01:18:05,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:18:05,567 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:18:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:18:05,568 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:18:05,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:18:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash -422170163, now seen corresponding path program 1 times [2023-12-16 01:18:05,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:18:05,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545258120] [2023-12-16 01:18:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:05,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:18:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 01:18:06,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:18:06,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545258120] [2023-12-16 01:18:06,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545258120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:18:06,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:18:06,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:18:06,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088728746] [2023-12-16 01:18:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:18:06,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:18:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:18:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:18:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:18:06,101 INFO L87 Difference]: Start difference. First operand 83470 states and 93221 transitions. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:18:07,278 INFO L93 Difference]: Finished difference Result 138374 states and 154687 transitions. [2023-12-16 01:18:07,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:18:07,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 316 [2023-12-16 01:18:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:18:07,340 INFO L225 Difference]: With dead ends: 138374 [2023-12-16 01:18:07,340 INFO L226 Difference]: Without dead ends: 51458 [2023-12-16 01:18:07,381 INFO L412 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 [2023-12-16 01:18:07,381 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 441 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:18:07,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 58 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:18:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51458 states. [2023-12-16 01:18:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51458 to 42322. [2023-12-16 01:18:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42322 states, 42321 states have (on average 1.06864204532029) internal successors, (45226), 42321 states have internal predecessors, (45226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42322 states to 42322 states and 45226 transitions. [2023-12-16 01:18:08,004 INFO L78 Accepts]: Start accepts. Automaton has 42322 states and 45226 transitions. Word has length 316 [2023-12-16 01:18:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:18:08,005 INFO L495 AbstractCegarLoop]: Abstraction has 42322 states and 45226 transitions. [2023-12-16 01:18:08,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 42322 states and 45226 transitions. [2023-12-16 01:18:08,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-12-16 01:18:08,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:18:08,023 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:18:08,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 01:18:08,023 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:18:08,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:18:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1011551639, now seen corresponding path program 1 times [2023-12-16 01:18:08,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:18:08,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456374970] [2023-12-16 01:18:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:08,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:18:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 141 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 01:18:08,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:18:08,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456374970] [2023-12-16 01:18:08,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456374970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:18:08,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657080110] [2023-12-16 01:18:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:08,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:18:08,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:18:08,509 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) [2023-12-16 01:18:08,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 01:18:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:08,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:18:08,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:18:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 01:18:08,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:18:08,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657080110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:18:08,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:18:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:18:08,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2722037] [2023-12-16 01:18:08,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:18:08,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:18:08,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:18:08,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:18:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:18:08,853 INFO L87 Difference]: Start difference. First operand 42322 states and 45226 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:18:09,562 INFO L93 Difference]: Finished difference Result 82839 states and 88558 transitions. [2023-12-16 01:18:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:18:09,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 333 [2023-12-16 01:18:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:18:09,604 INFO L225 Difference]: With dead ends: 82839 [2023-12-16 01:18:09,605 INFO L226 Difference]: Without dead ends: 41330 [2023-12-16 01:18:09,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:18:09,628 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 129 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:18:09,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 301 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:18:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41330 states. [2023-12-16 01:18:10,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41330 to 41104. [2023-12-16 01:18:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41104 states, 41103 states have (on average 1.0672700289516581) internal successors, (43868), 41103 states have internal predecessors, (43868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:10,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41104 states to 41104 states and 43868 transitions. [2023-12-16 01:18:10,212 INFO L78 Accepts]: Start accepts. Automaton has 41104 states and 43868 transitions. Word has length 333 [2023-12-16 01:18:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:18:10,212 INFO L495 AbstractCegarLoop]: Abstraction has 41104 states and 43868 transitions. [2023-12-16 01:18:10,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:10,213 INFO L276 IsEmpty]: Start isEmpty. Operand 41104 states and 43868 transitions. [2023-12-16 01:18:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-16 01:18:10,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:18:10,242 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:18:10,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 01:18:10,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:18:10,449 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:18:10,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:18:10,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1785914532, now seen corresponding path program 1 times [2023-12-16 01:18:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:18:10,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388654961] [2023-12-16 01:18:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:10,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:18:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-16 01:18:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:18:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388654961] [2023-12-16 01:18:10,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388654961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:18:10,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:18:10,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:18:10,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788509529] [2023-12-16 01:18:10,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:18:10,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:18:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:18:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:18:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:18:10,680 INFO L87 Difference]: Start difference. First operand 41104 states and 43868 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:11,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:18:11,209 INFO L93 Difference]: Finished difference Result 107438 states and 114547 transitions. [2023-12-16 01:18:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:18:11,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 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 369 [2023-12-16 01:18:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:18:11,289 INFO L225 Difference]: With dead ends: 107438 [2023-12-16 01:18:11,290 INFO L226 Difference]: Without dead ends: 68165 [2023-12-16 01:18:11,322 INFO L412 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 [2023-12-16 01:18:11,323 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 175 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:18:11,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 468 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 01:18:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68165 states. [2023-12-16 01:18:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68165 to 65314. [2023-12-16 01:18:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65314 states, 65313 states have (on average 1.0642904169154686) internal successors, (69512), 65313 states have internal predecessors, (69512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65314 states to 65314 states and 69512 transitions. [2023-12-16 01:18:12,353 INFO L78 Accepts]: Start accepts. Automaton has 65314 states and 69512 transitions. Word has length 369 [2023-12-16 01:18:12,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:18:12,354 INFO L495 AbstractCegarLoop]: Abstraction has 65314 states and 69512 transitions. [2023-12-16 01:18:12,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 65314 states and 69512 transitions. [2023-12-16 01:18:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-12-16 01:18:12,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:18:12,373 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:18:12,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 01:18:12,373 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:18:12,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:18:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1105779681, now seen corresponding path program 1 times [2023-12-16 01:18:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:18:12,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580166827] [2023-12-16 01:18:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:12,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:18:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 190 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 01:18:12,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:18:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580166827] [2023-12-16 01:18:12,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580166827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:18:12,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409406672] [2023-12-16 01:18:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:12,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:18:12,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:18:12,961 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) [2023-12-16 01:18:12,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 01:18:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:13,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:18:13,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:18:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-16 01:18:13,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:18:13,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409406672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:18:13,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:18:13,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-16 01:18:13,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718780306] [2023-12-16 01:18:13,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:18:13,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:18:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:18:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:18:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:18:13,368 INFO L87 Difference]: Start difference. First operand 65314 states and 69512 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:18:14,147 INFO L93 Difference]: Finished difference Result 123515 states and 131358 transitions. [2023-12-16 01:18:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:18:14,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 377 [2023-12-16 01:18:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:18:14,212 INFO L225 Difference]: With dead ends: 123515 [2023-12-16 01:18:14,212 INFO L226 Difference]: Without dead ends: 60029 [2023-12-16 01:18:14,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:18:14,233 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 56 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:18:14,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 77 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:18:14,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60029 states. [2023-12-16 01:18:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60029 to 51088. [2023-12-16 01:18:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51088 states, 51087 states have (on average 1.0469199600681192) internal successors, (53484), 51087 states have internal predecessors, (53484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51088 states to 51088 states and 53484 transitions. [2023-12-16 01:18:14,946 INFO L78 Accepts]: Start accepts. Automaton has 51088 states and 53484 transitions. Word has length 377 [2023-12-16 01:18:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:18:14,946 INFO L495 AbstractCegarLoop]: Abstraction has 51088 states and 53484 transitions. [2023-12-16 01:18:14,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 51088 states and 53484 transitions. [2023-12-16 01:18:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-16 01:18:14,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:18:14,962 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:18:14,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 01:18:15,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-16 01:18:15,164 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:18:15,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:18:15,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2104668619, now seen corresponding path program 1 times [2023-12-16 01:18:15,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:18:15,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662897373] [2023-12-16 01:18:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:15,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:18:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-12-16 01:18:15,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:18:15,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662897373] [2023-12-16 01:18:15,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662897373] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:18:15,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954233910] [2023-12-16 01:18:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:18:15,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:18:15,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:18:15,721 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) [2023-12-16 01:18:15,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 01:18:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:18:15,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:18:15,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:18:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-16 01:18:16,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:18:16,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954233910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:18:16,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:18:16,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:18:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601219910] [2023-12-16 01:18:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:18:16,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:18:16,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:18:16,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:18:16,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:18:16,178 INFO L87 Difference]: Start difference. First operand 51088 states and 53484 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:18:16,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:18:16,931 INFO L93 Difference]: Finished difference Result 100959 states and 105693 transitions. [2023-12-16 01:18:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:18:16,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 402 [2023-12-16 01:18:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:18:16,994 INFO L225 Difference]: With dead ends: 100959 [2023-12-16 01:18:16,994 INFO L226 Difference]: Without dead ends: 52718 [2023-12-16 01:18:17,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:18:17,023 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 67 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:18:17,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 50 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:18:17,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52718 states. Received shutdown request... [2023-12-16 01:18:17,241 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 01:18:17,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 01:18:17,283 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:18:17,283 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:18:17,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:18:17,442 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-16 01:18:17,446 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:18:17,448 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:18:17,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:18:17 BoogieIcfgContainer [2023-12-16 01:18:17,450 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:18:17,450 INFO L158 Benchmark]: Toolchain (without parser) took 51032.86ms. Allocated memory was 185.6MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 138.7MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-16 01:18:17,450 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 185.6MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:18:17,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 858.51ms. Allocated memory is still 185.6MB. Free memory was 138.7MB in the beginning and 131.5MB in the end (delta: 7.2MB). Peak memory consumption was 50.8MB. Max. memory is 8.0GB. [2023-12-16 01:18:17,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 154.33ms. Allocated memory is still 185.6MB. Free memory was 131.5MB in the beginning and 116.3MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 01:18:17,451 INFO L158 Benchmark]: Boogie Preprocessor took 179.65ms. Allocated memory is still 185.6MB. Free memory was 116.3MB in the beginning and 103.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 01:18:17,451 INFO L158 Benchmark]: RCFGBuilder took 1888.38ms. Allocated memory was 185.6MB in the beginning and 250.6MB in the end (delta: 65.0MB). Free memory was 103.8MB in the beginning and 125.1MB in the end (delta: -21.3MB). Peak memory consumption was 82.5MB. Max. memory is 8.0GB. [2023-12-16 01:18:17,451 INFO L158 Benchmark]: TraceAbstraction took 47944.57ms. Allocated memory was 250.6MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 124.6MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-16 01:18:17,452 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 185.6MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 858.51ms. Allocated memory is still 185.6MB. Free memory was 138.7MB in the beginning and 131.5MB in the end (delta: 7.2MB). Peak memory consumption was 50.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 154.33ms. Allocated memory is still 185.6MB. Free memory was 131.5MB in the beginning and 116.3MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 179.65ms. Allocated memory is still 185.6MB. Free memory was 116.3MB in the beginning and 103.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1888.38ms. Allocated memory was 185.6MB in the beginning and 250.6MB in the end (delta: 65.0MB). Free memory was 103.8MB in the beginning and 125.1MB in the end (delta: -21.3MB). Peak memory consumption was 82.5MB. Max. memory is 8.0GB. * TraceAbstraction took 47944.57ms. Allocated memory was 250.6MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 124.6MB in the beginning and 4.7GB in the end (delta: -4.5GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 1642]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1642). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.9s, OverallIterations: 24, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.6s, AutomataDifference: 21.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4592 SdHoareTripleChecker+Valid, 14.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4592 mSDsluCounter, 6276 SdHoareTripleChecker+Invalid, 11.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1010 mSDsCounter, 1934 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13307 IncrementalHoareTripleChecker+Invalid, 15241 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1934 mSolverCounterUnsat, 5266 mSDtfsCounter, 13307 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1918 GetRequests, 1881 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83470occurred in iteration=19, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.1s AutomataMinimizationTime, 24 MinimizatonAttempts, 43695 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 8307 NumberOfCodeBlocks, 8307 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 8277 ConstructedInterpolants, 0 QuantifiedInterpolants, 14615 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3366 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 30 InterpolantComputations, 24 PerfectInterpolantSequences, 3376/3415 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown