/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/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:15:08,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:15:08,630 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 14:15:08,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:15:08,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:15:08,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:15:08,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:15:08,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:15:08,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:15:08,660 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:15:08,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:15:08,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:15:08,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:15:08,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:15:08,662 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:15:08,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:15:08,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:15:08,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:15:08,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:15:08,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:15:08,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:15:08,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:15:08,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:15:08,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:15:08,664 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:15:08,664 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:15:08,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:15:08,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:15:08,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:15:08,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:15:08,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:15:08,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:15:08,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:15:08,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:15:08,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:15:08,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:15:08,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:15:08,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:15:08,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:15:08,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:15:08,666 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:15:08,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:15:08,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:15:08,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:15:08,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:15:08,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:15:08,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:15:08,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:15:08,909 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:15:08,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:15:10,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:15:10,320 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:15:10,321 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:15:10,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e33a1ce97/e44b5302b9304990bbef4d64613238be/FLAG561a3b0ab [2023-12-21 14:15:10,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e33a1ce97/e44b5302b9304990bbef4d64613238be [2023-12-21 14:15:10,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:15:10,342 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:15:10,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:15:10,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:15:10,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:15:10,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a750b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10, skipping insertion in model container [2023-12-21 14:15:10,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,382 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:15:10,526 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7669,7682] [2023-12-21 14:15:10,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:15:10,561 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:15:10,601 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7669,7682] [2023-12-21 14:15:10,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:15:10,646 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:15:10,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10 WrapperNode [2023-12-21 14:15:10,647 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:15:10,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:15:10,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:15:10,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:15:10,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,700 INFO L138 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 618 [2023-12-21 14:15:10,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:15:10,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:15:10,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:15:10,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:15:10,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,732 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]. [2023-12-21 14:15:10,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:15:10,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:15:10,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:15:10,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:15:10,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (1/1) ... [2023-12-21 14:15:10,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:15:10,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:15:10,839 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) [2023-12-21 14:15:10,874 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 [2023-12-21 14:15:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:15:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:15:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:15:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:15:11,006 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:15:11,008 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:15:11,385 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:15:11,451 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:15:11,452 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:15:11,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:15:11 BoogieIcfgContainer [2023-12-21 14:15:11,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:15:11,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:15:11,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:15:11,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:15:11,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:15:10" (1/3) ... [2023-12-21 14:15:11,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9ec418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:15:11, skipping insertion in model container [2023-12-21 14:15:11,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:15:10" (2/3) ... [2023-12-21 14:15:11,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9ec418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:15:11, skipping insertion in model container [2023-12-21 14:15:11,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:15:11" (3/3) ... [2023-12-21 14:15:11,466 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 14:15:11,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:15:11,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:15:11,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:15:11,541 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;@55942f00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:15:11,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:15:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.7537313432835822) internal successors, (235), 135 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 14:15:11,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:11,551 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] [2023-12-21 14:15:11,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:11,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1650403791, now seen corresponding path program 1 times [2023-12-21 14:15:11,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:11,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719963835] [2023-12-21 14:15:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:11,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719963835] [2023-12-21 14:15:11,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719963835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:11,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:11,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:15:11,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760659470] [2023-12-21 14:15:11,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:11,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:15:11,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:15:11,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:15:11,842 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.7537313432835822) internal successors, (235), 135 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:11,881 INFO L93 Difference]: Finished difference Result 296 states and 486 transitions. [2023-12-21 14:15:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:15:11,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-21 14:15:11,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:11,890 INFO L225 Difference]: With dead ends: 296 [2023-12-21 14:15:11,890 INFO L226 Difference]: Without dead ends: 208 [2023-12-21 14:15:11,892 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 [2023-12-21 14:15:11,895 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 158 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:11,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 463 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:11,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-21 14:15:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2023-12-21 14:15:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.448780487804878) internal successors, (297), 205 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 297 transitions. [2023-12-21 14:15:11,929 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 297 transitions. Word has length 86 [2023-12-21 14:15:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:11,929 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 297 transitions. [2023-12-21 14:15:11,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 297 transitions. [2023-12-21 14:15:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 14:15:11,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:11,932 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] [2023-12-21 14:15:11,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:15:11,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:11,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash 890764243, now seen corresponding path program 1 times [2023-12-21 14:15:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:11,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446204248] [2023-12-21 14:15:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:11,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:12,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:12,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446204248] [2023-12-21 14:15:12,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446204248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:12,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:12,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:15:12,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181703915] [2023-12-21 14:15:12,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:12,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:15:12,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:12,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:15:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:15:12,040 INFO L87 Difference]: Start difference. First operand 206 states and 297 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:12,060 INFO L93 Difference]: Finished difference Result 498 states and 761 transitions. [2023-12-21 14:15:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:15:12,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-12-21 14:15:12,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:12,063 INFO L225 Difference]: With dead ends: 498 [2023-12-21 14:15:12,063 INFO L226 Difference]: Without dead ends: 344 [2023-12-21 14:15:12,064 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 [2023-12-21 14:15:12,065 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 110 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:12,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 400 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-21 14:15:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2023-12-21 14:15:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 341 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 513 transitions. [2023-12-21 14:15:12,080 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 513 transitions. Word has length 87 [2023-12-21 14:15:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:12,080 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 513 transitions. [2023-12-21 14:15:12,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 513 transitions. [2023-12-21 14:15:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 14:15:12,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:12,083 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] [2023-12-21 14:15:12,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:15:12,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:12,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1471057757, now seen corresponding path program 1 times [2023-12-21 14:15:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285502433] [2023-12-21 14:15:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:12,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285502433] [2023-12-21 14:15:12,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285502433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:12,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:12,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:15:12,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091843171] [2023-12-21 14:15:12,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:12,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:15:12,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:15:12,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:15:12,247 INFO L87 Difference]: Start difference. First operand 342 states and 513 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:12,269 INFO L93 Difference]: Finished difference Result 890 states and 1383 transitions. [2023-12-21 14:15:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:15:12,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-12-21 14:15:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:12,272 INFO L225 Difference]: With dead ends: 890 [2023-12-21 14:15:12,272 INFO L226 Difference]: Without dead ends: 600 [2023-12-21 14:15:12,273 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 [2023-12-21 14:15:12,274 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 105 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:12,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 396 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-12-21 14:15:12,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 598. [2023-12-21 14:15:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.5360134003350083) internal successors, (917), 597 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 917 transitions. [2023-12-21 14:15:12,309 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 917 transitions. Word has length 88 [2023-12-21 14:15:12,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:12,310 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 917 transitions. [2023-12-21 14:15:12,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,310 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 917 transitions. [2023-12-21 14:15:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 14:15:12,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:12,312 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] [2023-12-21 14:15:12,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:15:12,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:12,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash 150999361, now seen corresponding path program 1 times [2023-12-21 14:15:12,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:12,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942929424] [2023-12-21 14:15:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:12,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:12,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942929424] [2023-12-21 14:15:12,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942929424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:12,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:12,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:15:12,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90936814] [2023-12-21 14:15:12,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:12,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:15:12,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:12,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:15:12,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:15:12,444 INFO L87 Difference]: Start difference. First operand 598 states and 917 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:12,459 INFO L93 Difference]: Finished difference Result 1626 states and 2543 transitions. [2023-12-21 14:15:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:15:12,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-21 14:15:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:12,465 INFO L225 Difference]: With dead ends: 1626 [2023-12-21 14:15:12,466 INFO L226 Difference]: Without dead ends: 1080 [2023-12-21 14:15:12,467 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 [2023-12-21 14:15:12,468 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 100 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:12,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 392 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-12-21 14:15:12,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2023-12-21 14:15:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 1.5496750232126277) internal successors, (1669), 1077 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1669 transitions. [2023-12-21 14:15:12,511 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1669 transitions. Word has length 89 [2023-12-21 14:15:12,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:12,511 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1669 transitions. [2023-12-21 14:15:12,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1669 transitions. [2023-12-21 14:15:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 14:15:12,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:12,512 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] [2023-12-21 14:15:12,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:15:12,513 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:12,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:12,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1554324511, now seen corresponding path program 1 times [2023-12-21 14:15:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:12,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065082483] [2023-12-21 14:15:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:12,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:12,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:12,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:12,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065082483] [2023-12-21 14:15:12,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065082483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:12,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:12,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:15:12,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486132686] [2023-12-21 14:15:12,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:12,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:15:12,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:15:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:15:12,617 INFO L87 Difference]: Start difference. First operand 1078 states and 1669 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:12,640 INFO L93 Difference]: Finished difference Result 3002 states and 4695 transitions. [2023-12-21 14:15:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:15:12,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-21 14:15:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:12,650 INFO L225 Difference]: With dead ends: 3002 [2023-12-21 14:15:12,650 INFO L226 Difference]: Without dead ends: 1976 [2023-12-21 14:15:12,655 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 [2023-12-21 14:15:12,660 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 95 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:12,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 388 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:12,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2023-12-21 14:15:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1974. [2023-12-21 14:15:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1973 states have (on average 1.5514445007602635) internal successors, (3061), 1973 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3061 transitions. [2023-12-21 14:15:12,708 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3061 transitions. Word has length 90 [2023-12-21 14:15:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:12,710 INFO L495 AbstractCegarLoop]: Abstraction has 1974 states and 3061 transitions. [2023-12-21 14:15:12,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3061 transitions. [2023-12-21 14:15:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 14:15:12,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:12,711 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] [2023-12-21 14:15:12,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:15:12,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:12,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:12,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1995360903, now seen corresponding path program 1 times [2023-12-21 14:15:12,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:12,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828101454] [2023-12-21 14:15:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:12,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828101454] [2023-12-21 14:15:12,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828101454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:12,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:12,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:15:12,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033576543] [2023-12-21 14:15:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:12,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:15:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:15:12,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:15:12,803 INFO L87 Difference]: Start difference. First operand 1974 states and 3061 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:12,826 INFO L93 Difference]: Finished difference Result 5562 states and 8663 transitions. [2023-12-21 14:15:12,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:15:12,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-21 14:15:12,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:12,836 INFO L225 Difference]: With dead ends: 5562 [2023-12-21 14:15:12,837 INFO L226 Difference]: Without dead ends: 3640 [2023-12-21 14:15:12,839 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 [2023-12-21 14:15:12,840 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 90 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:12,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 384 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2023-12-21 14:15:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3638. [2023-12-21 14:15:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.5455045367060765) internal successors, (5621), 3637 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5621 transitions. [2023-12-21 14:15:12,898 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5621 transitions. Word has length 91 [2023-12-21 14:15:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:12,899 INFO L495 AbstractCegarLoop]: Abstraction has 3638 states and 5621 transitions. [2023-12-21 14:15:12,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5621 transitions. [2023-12-21 14:15:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 14:15:12,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:12,902 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] [2023-12-21 14:15:12,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:15:12,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:12,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash 338584792, now seen corresponding path program 1 times [2023-12-21 14:15:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:12,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968206232] [2023-12-21 14:15:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:13,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:13,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968206232] [2023-12-21 14:15:13,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968206232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:13,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:13,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:15:13,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554598753] [2023-12-21 14:15:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:13,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:15:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:13,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:15:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:15:13,053 INFO L87 Difference]: Start difference. First operand 3638 states and 5621 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:13,548 INFO L93 Difference]: Finished difference Result 53842 states and 83587 transitions. [2023-12-21 14:15:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 14:15:13,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-21 14:15:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:13,674 INFO L225 Difference]: With dead ends: 53842 [2023-12-21 14:15:13,674 INFO L226 Difference]: Without dead ends: 50256 [2023-12-21 14:15:13,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-21 14:15:13,698 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 2518 mSDsluCounter, 4862 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2518 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:13,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2518 Valid, 5039 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50256 states. [2023-12-21 14:15:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50256 to 7222. [2023-12-21 14:15:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7222 states, 7221 states have (on average 1.5317823016202743) internal successors, (11061), 7221 states have internal predecessors, (11061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7222 states to 7222 states and 11061 transitions. [2023-12-21 14:15:14,174 INFO L78 Accepts]: Start accepts. Automaton has 7222 states and 11061 transitions. Word has length 92 [2023-12-21 14:15:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:14,175 INFO L495 AbstractCegarLoop]: Abstraction has 7222 states and 11061 transitions. [2023-12-21 14:15:14,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 7222 states and 11061 transitions. [2023-12-21 14:15:14,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 14:15:14,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:14,176 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] [2023-12-21 14:15:14,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:15:14,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:14,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1959347564, now seen corresponding path program 1 times [2023-12-21 14:15:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840456903] [2023-12-21 14:15:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:14,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:14,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840456903] [2023-12-21 14:15:14,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840456903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:14,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:14,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:15:14,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723591327] [2023-12-21 14:15:14,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:14,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:15:14,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:15:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:15:14,245 INFO L87 Difference]: Start difference. First operand 7222 states and 11061 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:14,291 INFO L93 Difference]: Finished difference Result 20858 states and 31863 transitions. [2023-12-21 14:15:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:15:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-21 14:15:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:14,310 INFO L225 Difference]: With dead ends: 20858 [2023-12-21 14:15:14,310 INFO L226 Difference]: Without dead ends: 13688 [2023-12-21 14:15:14,320 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 [2023-12-21 14:15:14,321 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 80 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:14,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 302 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13688 states. [2023-12-21 14:15:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13688 to 13558. [2023-12-21 14:15:14,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13558 states, 13557 states have (on average 1.505126502913624) internal successors, (20405), 13557 states have internal predecessors, (20405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13558 states to 13558 states and 20405 transitions. [2023-12-21 14:15:14,513 INFO L78 Accepts]: Start accepts. Automaton has 13558 states and 20405 transitions. Word has length 94 [2023-12-21 14:15:14,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:14,513 INFO L495 AbstractCegarLoop]: Abstraction has 13558 states and 20405 transitions. [2023-12-21 14:15:14,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:14,514 INFO L276 IsEmpty]: Start isEmpty. Operand 13558 states and 20405 transitions. [2023-12-21 14:15:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 14:15:14,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:14,515 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] [2023-12-21 14:15:14,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:15:14,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:14,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1938344909, now seen corresponding path program 1 times [2023-12-21 14:15:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:14,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191190895] [2023-12-21 14:15:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:14,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:14,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:14,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191190895] [2023-12-21 14:15:14,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191190895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:14,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:14,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:15:14,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439970544] [2023-12-21 14:15:14,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:14,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:15:14,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:14,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:15:14,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:15:14,864 INFO L87 Difference]: Start difference. First operand 13558 states and 20405 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:15,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:15,215 INFO L93 Difference]: Finished difference Result 27066 states and 40759 transitions. [2023-12-21 14:15:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:15:15,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-21 14:15:15,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:15,234 INFO L225 Difference]: With dead ends: 27066 [2023-12-21 14:15:15,234 INFO L226 Difference]: Without dead ends: 13560 [2023-12-21 14:15:15,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-21 14:15:15,250 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 470 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:15,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 987 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13560 states. [2023-12-21 14:15:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13560 to 13558. [2023-12-21 14:15:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13558 states, 13557 states have (on average 1.4956848860367338) internal successors, (20277), 13557 states have internal predecessors, (20277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13558 states to 13558 states and 20277 transitions. [2023-12-21 14:15:15,501 INFO L78 Accepts]: Start accepts. Automaton has 13558 states and 20277 transitions. Word has length 94 [2023-12-21 14:15:15,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:15,501 INFO L495 AbstractCegarLoop]: Abstraction has 13558 states and 20277 transitions. [2023-12-21 14:15:15,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 13558 states and 20277 transitions. [2023-12-21 14:15:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:15:15,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:15,502 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] [2023-12-21 14:15:15,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:15:15,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:15,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1796384236, now seen corresponding path program 1 times [2023-12-21 14:15:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:15,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855436024] [2023-12-21 14:15:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:15,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:15,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:15,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855436024] [2023-12-21 14:15:15,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855436024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:15,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:15,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:15:15,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030993842] [2023-12-21 14:15:15,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:15,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:15:15,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:15:15,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:15:15,553 INFO L87 Difference]: Start difference. First operand 13558 states and 20277 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:15,607 INFO L93 Difference]: Finished difference Result 26621 states and 40123 transitions. [2023-12-21 14:15:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:15:15,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-21 14:15:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:15,639 INFO L225 Difference]: With dead ends: 26621 [2023-12-21 14:15:15,639 INFO L226 Difference]: Without dead ends: 19450 [2023-12-21 14:15:15,650 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 [2023-12-21 14:15:15,651 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 117 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:15,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 412 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:15,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2023-12-21 14:15:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 19448. [2023-12-21 14:15:15,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19448 states, 19447 states have (on average 1.4936494060780583) internal successors, (29047), 19447 states have internal predecessors, (29047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19448 states to 19448 states and 29047 transitions. [2023-12-21 14:15:15,981 INFO L78 Accepts]: Start accepts. Automaton has 19448 states and 29047 transitions. Word has length 95 [2023-12-21 14:15:15,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:15,982 INFO L495 AbstractCegarLoop]: Abstraction has 19448 states and 29047 transitions. [2023-12-21 14:15:15,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:15,982 INFO L276 IsEmpty]: Start isEmpty. Operand 19448 states and 29047 transitions. [2023-12-21 14:15:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:15:15,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:15,983 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] [2023-12-21 14:15:15,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:15:15,983 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:15,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash 38940696, now seen corresponding path program 1 times [2023-12-21 14:15:15,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:15,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207579992] [2023-12-21 14:15:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:15,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:16,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:16,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207579992] [2023-12-21 14:15:16,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207579992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:16,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:16,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:15:16,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042271886] [2023-12-21 14:15:16,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:16,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:15:16,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:15:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:15:16,059 INFO L87 Difference]: Start difference. First operand 19448 states and 29047 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:16,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:16,373 INFO L93 Difference]: Finished difference Result 51900 states and 77753 transitions. [2023-12-21 14:15:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:15:16,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-21 14:15:16,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:16,408 INFO L225 Difference]: With dead ends: 51900 [2023-12-21 14:15:16,408 INFO L226 Difference]: Without dead ends: 32506 [2023-12-21 14:15:16,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:15:16,423 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 741 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:16,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 185 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:16,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32506 states. [2023-12-21 14:15:16,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32506 to 32504. [2023-12-21 14:15:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32504 states, 32503 states have (on average 1.492262252715134) internal successors, (48503), 32503 states have internal predecessors, (48503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32504 states to 32504 states and 48503 transitions. [2023-12-21 14:15:16,850 INFO L78 Accepts]: Start accepts. Automaton has 32504 states and 48503 transitions. Word has length 95 [2023-12-21 14:15:16,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:16,851 INFO L495 AbstractCegarLoop]: Abstraction has 32504 states and 48503 transitions. [2023-12-21 14:15:16,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:16,851 INFO L276 IsEmpty]: Start isEmpty. Operand 32504 states and 48503 transitions. [2023-12-21 14:15:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:15:16,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:16,851 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] [2023-12-21 14:15:16,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:15:16,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:16,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:16,852 INFO L85 PathProgramCache]: Analyzing trace with hash -323178029, now seen corresponding path program 1 times [2023-12-21 14:15:16,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:16,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865806732] [2023-12-21 14:15:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:16,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:16,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:16,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865806732] [2023-12-21 14:15:16,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865806732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:16,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:16,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:15:16,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205127702] [2023-12-21 14:15:16,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:16,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:15:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:15:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:15:16,961 INFO L87 Difference]: Start difference. First operand 32504 states and 48503 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:17,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:17,275 INFO L93 Difference]: Finished difference Result 64954 states and 96952 transitions. [2023-12-21 14:15:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:15:17,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-21 14:15:17,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:17,319 INFO L225 Difference]: With dead ends: 64954 [2023-12-21 14:15:17,319 INFO L226 Difference]: Without dead ends: 32504 [2023-12-21 14:15:17,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:15:17,345 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 417 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:17,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 156 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32504 states. [2023-12-21 14:15:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32504 to 32504. [2023-12-21 14:15:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32504 states, 32503 states have (on average 1.4824170076608314) internal successors, (48183), 32503 states have internal predecessors, (48183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32504 states to 32504 states and 48183 transitions. [2023-12-21 14:15:17,865 INFO L78 Accepts]: Start accepts. Automaton has 32504 states and 48183 transitions. Word has length 95 [2023-12-21 14:15:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:17,865 INFO L495 AbstractCegarLoop]: Abstraction has 32504 states and 48183 transitions. [2023-12-21 14:15:17,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 32504 states and 48183 transitions. [2023-12-21 14:15:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:15:17,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:17,866 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] [2023-12-21 14:15:17,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:15:17,866 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:17,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash 542354360, now seen corresponding path program 1 times [2023-12-21 14:15:17,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908961691] [2023-12-21 14:15:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:17,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:17,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908961691] [2023-12-21 14:15:17,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908961691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:17,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:17,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:15:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030319562] [2023-12-21 14:15:17,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:17,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:15:17,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:17,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:15:17,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:15:17,975 INFO L87 Difference]: Start difference. First operand 32504 states and 48183 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:18,151 INFO L93 Difference]: Finished difference Result 64954 states and 96312 transitions. [2023-12-21 14:15:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:15:18,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-21 14:15:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:18,191 INFO L225 Difference]: With dead ends: 64954 [2023-12-21 14:15:18,191 INFO L226 Difference]: Without dead ends: 32504 [2023-12-21 14:15:18,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:15:18,216 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 401 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:18,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 164 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:18,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32504 states. [2023-12-21 14:15:18,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32504 to 32504. [2023-12-21 14:15:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32504 states, 32503 states have (on average 1.4725717626065287) internal successors, (47863), 32503 states have internal predecessors, (47863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:18,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32504 states to 32504 states and 47863 transitions. [2023-12-21 14:15:18,905 INFO L78 Accepts]: Start accepts. Automaton has 32504 states and 47863 transitions. Word has length 95 [2023-12-21 14:15:18,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:18,905 INFO L495 AbstractCegarLoop]: Abstraction has 32504 states and 47863 transitions. [2023-12-21 14:15:18,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand 32504 states and 47863 transitions. [2023-12-21 14:15:18,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:15:18,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:18,906 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] [2023-12-21 14:15:18,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:15:18,906 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:18,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash 13063859, now seen corresponding path program 1 times [2023-12-21 14:15:18,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:18,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269400473] [2023-12-21 14:15:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:18,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:18,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:18,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269400473] [2023-12-21 14:15:18,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269400473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:18,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:18,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:15:18,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464350676] [2023-12-21 14:15:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:18,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:15:18,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:18,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:15:18,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:15:18,970 INFO L87 Difference]: Start difference. First operand 32504 states and 47863 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:19,152 INFO L93 Difference]: Finished difference Result 64954 states and 95672 transitions. [2023-12-21 14:15:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:15:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-21 14:15:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:19,188 INFO L225 Difference]: With dead ends: 64954 [2023-12-21 14:15:19,188 INFO L226 Difference]: Without dead ends: 32504 [2023-12-21 14:15:19,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:15:19,211 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 437 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:19,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 140 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:19,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32504 states. [2023-12-21 14:15:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32504 to 32504. [2023-12-21 14:15:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32504 states, 32503 states have (on average 1.462726517552226) internal successors, (47543), 32503 states have internal predecessors, (47543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32504 states to 32504 states and 47543 transitions. [2023-12-21 14:15:19,772 INFO L78 Accepts]: Start accepts. Automaton has 32504 states and 47543 transitions. Word has length 95 [2023-12-21 14:15:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:19,772 INFO L495 AbstractCegarLoop]: Abstraction has 32504 states and 47543 transitions. [2023-12-21 14:15:19,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 32504 states and 47543 transitions. [2023-12-21 14:15:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:15:19,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:19,772 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] [2023-12-21 14:15:19,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:15:19,773 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:19,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:19,773 INFO L85 PathProgramCache]: Analyzing trace with hash -749799848, now seen corresponding path program 1 times [2023-12-21 14:15:19,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:19,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833760697] [2023-12-21 14:15:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:19,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:19,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:19,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833760697] [2023-12-21 14:15:19,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833760697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:19,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:19,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:15:19,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905020106] [2023-12-21 14:15:19,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:19,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:15:19,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:15:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:15:19,849 INFO L87 Difference]: Start difference. First operand 32504 states and 47543 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:20,027 INFO L93 Difference]: Finished difference Result 64954 states and 95032 transitions. [2023-12-21 14:15:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:15:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-21 14:15:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:20,064 INFO L225 Difference]: With dead ends: 64954 [2023-12-21 14:15:20,064 INFO L226 Difference]: Without dead ends: 32504 [2023-12-21 14:15:20,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:15:20,088 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 460 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:20,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 124 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:20,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32504 states. [2023-12-21 14:15:20,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32504 to 32504. [2023-12-21 14:15:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32504 states, 32503 states have (on average 1.4528812724979232) internal successors, (47223), 32503 states have internal predecessors, (47223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32504 states to 32504 states and 47223 transitions. [2023-12-21 14:15:20,581 INFO L78 Accepts]: Start accepts. Automaton has 32504 states and 47223 transitions. Word has length 95 [2023-12-21 14:15:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:20,582 INFO L495 AbstractCegarLoop]: Abstraction has 32504 states and 47223 transitions. [2023-12-21 14:15:20,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 32504 states and 47223 transitions. [2023-12-21 14:15:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 14:15:20,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:20,583 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] [2023-12-21 14:15:20,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:15:20,584 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:20,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1803750333, now seen corresponding path program 1 times [2023-12-21 14:15:20,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:20,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12203835] [2023-12-21 14:15:20,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:20,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:20,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:20,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12203835] [2023-12-21 14:15:20,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12203835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:20,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:20,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 14:15:20,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149207528] [2023-12-21 14:15:20,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:20,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:15:20,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:20,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:15:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:15:20,861 INFO L87 Difference]: Start difference. First operand 32504 states and 47223 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:21,014 INFO L93 Difference]: Finished difference Result 61740 states and 89442 transitions. [2023-12-21 14:15:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 14:15:21,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-21 14:15:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:21,095 INFO L225 Difference]: With dead ends: 61740 [2023-12-21 14:15:21,095 INFO L226 Difference]: Without dead ends: 61738 [2023-12-21 14:15:21,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 14:15:21,116 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 236 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:21,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 810 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:15:21,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61738 states. [2023-12-21 14:15:21,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61738 to 33528. [2023-12-21 14:15:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33528 states, 33527 states have (on average 1.4371402153488233) internal successors, (48183), 33527 states have internal predecessors, (48183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33528 states to 33528 states and 48183 transitions. [2023-12-21 14:15:21,690 INFO L78 Accepts]: Start accepts. Automaton has 33528 states and 48183 transitions. Word has length 95 [2023-12-21 14:15:21,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:21,690 INFO L495 AbstractCegarLoop]: Abstraction has 33528 states and 48183 transitions. [2023-12-21 14:15:21,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 33528 states and 48183 transitions. [2023-12-21 14:15:21,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:15:21,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:21,699 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:15:21,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:15:21,699 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:21,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:21,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1984394937, now seen corresponding path program 1 times [2023-12-21 14:15:21,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:21,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806403129] [2023-12-21 14:15:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 14:15:21,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:21,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806403129] [2023-12-21 14:15:21,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806403129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:21,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:21,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:15:21,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479235092] [2023-12-21 14:15:21,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:21,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:15:21,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:21,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:15:21,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:15:21,972 INFO L87 Difference]: Start difference. First operand 33528 states and 48183 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:22,832 INFO L93 Difference]: Finished difference Result 278280 states and 399871 transitions. [2023-12-21 14:15:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:15:22,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 130 [2023-12-21 14:15:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:23,199 INFO L225 Difference]: With dead ends: 278280 [2023-12-21 14:15:23,199 INFO L226 Difference]: Without dead ends: 244806 [2023-12-21 14:15:23,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:23,258 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 2154 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:23,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 1909 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244806 states. [2023-12-21 14:15:25,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244806 to 67000. [2023-12-21 14:15:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67000 states, 66999 states have (on average 1.4327228764608426) internal successors, (95991), 66999 states have internal predecessors, (95991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67000 states to 67000 states and 95991 transitions. [2023-12-21 14:15:25,228 INFO L78 Accepts]: Start accepts. Automaton has 67000 states and 95991 transitions. Word has length 130 [2023-12-21 14:15:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:25,228 INFO L495 AbstractCegarLoop]: Abstraction has 67000 states and 95991 transitions. [2023-12-21 14:15:25,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 67000 states and 95991 transitions. [2023-12-21 14:15:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:15:25,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:25,237 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:15:25,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:15:25,237 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1659771213, now seen corresponding path program 1 times [2023-12-21 14:15:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:25,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159991279] [2023-12-21 14:15:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 14:15:25,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:25,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159991279] [2023-12-21 14:15:25,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159991279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:25,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:25,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:15:25,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737529050] [2023-12-21 14:15:25,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:25,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:15:25,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:15:25,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:15:25,389 INFO L87 Difference]: Start difference. First operand 67000 states and 95991 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:26,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:26,706 INFO L93 Difference]: Finished difference Result 311752 states and 447679 transitions. [2023-12-21 14:15:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:15:26,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-21 14:15:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:27,112 INFO L225 Difference]: With dead ends: 311752 [2023-12-21 14:15:27,112 INFO L226 Difference]: Without dead ends: 278278 [2023-12-21 14:15:27,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:27,164 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2275 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:27,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2275 Valid, 1741 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278278 states. [2023-12-21 14:15:29,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278278 to 117240. [2023-12-21 14:15:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117240 states, 117239 states have (on average 1.4279804501914892) internal successors, (167415), 117239 states have internal predecessors, (167415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117240 states to 117240 states and 167415 transitions. [2023-12-21 14:15:29,617 INFO L78 Accepts]: Start accepts. Automaton has 117240 states and 167415 transitions. Word has length 130 [2023-12-21 14:15:29,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:29,617 INFO L495 AbstractCegarLoop]: Abstraction has 117240 states and 167415 transitions. [2023-12-21 14:15:29,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 117240 states and 167415 transitions. [2023-12-21 14:15:29,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:15:29,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:29,627 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:15:29,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:15:29,627 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:29,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:29,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2040208283, now seen corresponding path program 1 times [2023-12-21 14:15:29,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:29,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857191555] [2023-12-21 14:15:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:29,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-21 14:15:30,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857191555] [2023-12-21 14:15:30,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857191555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:30,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:30,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:15:30,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052826448] [2023-12-21 14:15:30,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:30,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:15:30,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:15:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:15:30,085 INFO L87 Difference]: Start difference. First operand 117240 states and 167415 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:31,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:31,182 INFO L93 Difference]: Finished difference Result 345224 states and 495487 transitions. [2023-12-21 14:15:31,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:15:31,183 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 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 130 [2023-12-21 14:15:31,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:31,654 INFO L225 Difference]: With dead ends: 345224 [2023-12-21 14:15:31,654 INFO L226 Difference]: Without dead ends: 311750 [2023-12-21 14:15:31,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:31,733 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 2145 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:31,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 1894 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:31,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311750 states. [2023-12-21 14:15:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311750 to 150712. [2023-12-21 14:15:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150712 states, 150711 states have (on average 1.428051038079503) internal successors, (215223), 150711 states have internal predecessors, (215223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150712 states to 150712 states and 215223 transitions. [2023-12-21 14:15:34,841 INFO L78 Accepts]: Start accepts. Automaton has 150712 states and 215223 transitions. Word has length 130 [2023-12-21 14:15:34,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:34,841 INFO L495 AbstractCegarLoop]: Abstraction has 150712 states and 215223 transitions. [2023-12-21 14:15:34,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 150712 states and 215223 transitions. [2023-12-21 14:15:34,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:15:34,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:34,852 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:15:34,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:15:34,852 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:34,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:34,853 INFO L85 PathProgramCache]: Analyzing trace with hash -886262177, now seen corresponding path program 1 times [2023-12-21 14:15:34,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:34,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124149600] [2023-12-21 14:15:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:34,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 14:15:34,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:34,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124149600] [2023-12-21 14:15:34,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124149600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:34,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:34,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:15:34,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610915251] [2023-12-21 14:15:34,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:34,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:15:34,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:15:34,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:15:34,995 INFO L87 Difference]: Start difference. First operand 150712 states and 215223 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:36,460 INFO L93 Difference]: Finished difference Result 378696 states and 543295 transitions. [2023-12-21 14:15:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:15:36,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 130 [2023-12-21 14:15:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:37,154 INFO L225 Difference]: With dead ends: 378696 [2023-12-21 14:15:37,155 INFO L226 Difference]: Without dead ends: 345222 [2023-12-21 14:15:37,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:37,258 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1876 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:37,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1876 Valid, 2007 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:37,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345222 states. [2023-12-21 14:15:40,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345222 to 184184. [2023-12-21 14:15:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184184 states, 184183 states have (on average 1.4280959697691968) internal successors, (263031), 184183 states have internal predecessors, (263031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:40,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184184 states to 184184 states and 263031 transitions. [2023-12-21 14:15:40,663 INFO L78 Accepts]: Start accepts. Automaton has 184184 states and 263031 transitions. Word has length 130 [2023-12-21 14:15:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:40,663 INFO L495 AbstractCegarLoop]: Abstraction has 184184 states and 263031 transitions. [2023-12-21 14:15:40,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 184184 states and 263031 transitions. [2023-12-21 14:15:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:15:40,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:40,675 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:15:40,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:15:40,675 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:40,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1744162855, now seen corresponding path program 1 times [2023-12-21 14:15:40,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615816778] [2023-12-21 14:15:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 14:15:41,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:41,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615816778] [2023-12-21 14:15:41,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615816778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:41,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:41,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:15:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866507105] [2023-12-21 14:15:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:41,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:15:41,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:15:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:15:41,262 INFO L87 Difference]: Start difference. First operand 184184 states and 263031 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:42,659 INFO L93 Difference]: Finished difference Result 412168 states and 591103 transitions. [2023-12-21 14:15:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:15:42,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 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 130 [2023-12-21 14:15:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:43,252 INFO L225 Difference]: With dead ends: 412168 [2023-12-21 14:15:43,252 INFO L226 Difference]: Without dead ends: 378694 [2023-12-21 14:15:43,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:43,392 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1805 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:43,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 2070 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:43,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378694 states. [2023-12-21 14:15:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378694 to 217656. [2023-12-21 14:15:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217656 states, 217655 states have (on average 1.4281270818497163) internal successors, (310839), 217655 states have internal predecessors, (310839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217656 states to 217656 states and 310839 transitions. [2023-12-21 14:15:47,980 INFO L78 Accepts]: Start accepts. Automaton has 217656 states and 310839 transitions. Word has length 130 [2023-12-21 14:15:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:47,981 INFO L495 AbstractCegarLoop]: Abstraction has 217656 states and 310839 transitions. [2023-12-21 14:15:47,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 217656 states and 310839 transitions. [2023-12-21 14:15:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 14:15:47,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:47,991 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:15:47,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:15:47,991 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:47,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:47,992 INFO L85 PathProgramCache]: Analyzing trace with hash -315666221, now seen corresponding path program 1 times [2023-12-21 14:15:47,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:47,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736221692] [2023-12-21 14:15:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:47,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 14:15:48,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736221692] [2023-12-21 14:15:48,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736221692] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:48,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:48,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:15:48,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746842037] [2023-12-21 14:15:48,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:48,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:15:48,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:15:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:15:48,142 INFO L87 Difference]: Start difference. First operand 217656 states and 310839 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:50,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:50,312 INFO L93 Difference]: Finished difference Result 445640 states and 638911 transitions. [2023-12-21 14:15:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:15:50,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 130 [2023-12-21 14:15:50,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:51,203 INFO L225 Difference]: With dead ends: 445640 [2023-12-21 14:15:51,204 INFO L226 Difference]: Without dead ends: 412166 [2023-12-21 14:15:51,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:51,334 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1889 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:51,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 2156 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412166 states. [2023-12-21 14:15:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412166 to 251128. [2023-12-21 14:15:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251128 states, 251127 states have (on average 1.4281499002496745) internal successors, (358647), 251127 states have internal predecessors, (358647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251128 states to 251128 states and 358647 transitions. [2023-12-21 14:15:55,569 INFO L78 Accepts]: Start accepts. Automaton has 251128 states and 358647 transitions. Word has length 130 [2023-12-21 14:15:55,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:55,569 INFO L495 AbstractCegarLoop]: Abstraction has 251128 states and 358647 transitions. [2023-12-21 14:15:55,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:55,570 INFO L276 IsEmpty]: Start isEmpty. Operand 251128 states and 358647 transitions. [2023-12-21 14:15:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 14:15:55,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:55,592 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:15:55,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:15:55,592 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:55,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:55,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1391691302, now seen corresponding path program 1 times [2023-12-21 14:15:55,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:55,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55090053] [2023-12-21 14:15:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:15:55,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:55,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55090053] [2023-12-21 14:15:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55090053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:55,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:55,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 14:15:55,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996391008] [2023-12-21 14:15:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:15:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:15:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:15:55,725 INFO L87 Difference]: Start difference. First operand 251128 states and 358647 transitions. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:15:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:15:57,361 INFO L93 Difference]: Finished difference Result 466440 states and 669055 transitions. [2023-12-21 14:15:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 14:15:57,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 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 131 [2023-12-21 14:15:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:15:58,237 INFO L225 Difference]: With dead ends: 466440 [2023-12-21 14:15:58,237 INFO L226 Difference]: Without dead ends: 439302 [2023-12-21 14:15:58,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 14:15:58,387 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 2155 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2155 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:15:58,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2155 Valid, 2288 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:15:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439302 states. [2023-12-21 14:16:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439302 to 278264. [2023-12-21 14:16:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278264 states, 278263 states have (on average 1.4291767141157825) internal successors, (397687), 278263 states have internal predecessors, (397687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:03,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278264 states to 278264 states and 397687 transitions. [2023-12-21 14:16:03,278 INFO L78 Accepts]: Start accepts. Automaton has 278264 states and 397687 transitions. Word has length 131 [2023-12-21 14:16:03,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:16:03,278 INFO L495 AbstractCegarLoop]: Abstraction has 278264 states and 397687 transitions. [2023-12-21 14:16:03,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 278264 states and 397687 transitions. [2023-12-21 14:16:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 14:16:03,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:16:03,649 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 14:16:03,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:16:03,650 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:16:03,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:16:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1120162418, now seen corresponding path program 1 times [2023-12-21 14:16:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:16:03,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862576764] [2023-12-21 14:16:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:03,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:16:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:16:04,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:16:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862576764] [2023-12-21 14:16:04,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862576764] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 14:16:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258129734] [2023-12-21 14:16:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:16:04,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 14:16:04,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:16:04,138 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) [2023-12-21 14:16:04,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 14:16:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:16:04,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 14:16:04,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 14:16:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:16:04,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 14:16:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 14:16:04,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258129734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 14:16:04,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 14:16:04,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-21 14:16:04,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7460667] [2023-12-21 14:16:04,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 14:16:04,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 14:16:04,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:16:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 14:16:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:16:04,616 INFO L87 Difference]: Start difference. First operand 278264 states and 397687 transitions. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:16:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:16:30,635 INFO L93 Difference]: Finished difference Result 5376172 states and 7585793 transitions. [2023-12-21 14:16:30,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-21 14:16:30,635 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 0 states have call successors, (0), 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 132 [2023-12-21 14:16:30,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:16:39,741 INFO L225 Difference]: With dead ends: 5376172 [2023-12-21 14:16:39,741 INFO L226 Difference]: Without dead ends: 5097962 [2023-12-21 14:16:41,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29318 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=8236, Invalid=53516, Unknown=0, NotChecked=0, Total=61752 [2023-12-21 14:16:41,286 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 11268 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 4915 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11268 SdHoareTripleChecker+Valid, 4595 SdHoareTripleChecker+Invalid, 4999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 4915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:16:41,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11268 Valid, 4595 Invalid, 4999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 4915 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 14:16:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097962 states.