/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:20:08,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:20:08,409 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:20:08,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:20:08,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:20:08,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:20:08,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:20:08,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:20:08,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:20:08,437 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:20:08,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:20:08,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:20:08,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:20:08,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:20:08,439 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:20:08,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:20:08,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:20:08,439 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:20:08,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:20:08,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:20:08,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:20:08,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:20:08,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:20:08,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:20:08,441 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:20:08,441 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:20:08,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:20:08,441 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:20:08,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:20:08,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:20:08,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:20:08,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:20:08,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:20:08,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:20:08,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:20:08,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:20:08,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:20:08,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:20:08,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:20:08,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:20:08,444 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:20:08,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:20:08,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:20:08,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:20:08,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:20:08,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:20:08,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:20:08,686 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:20:08,688 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:20:08,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c [2023-12-19 01:20:10,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:20:10,487 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:20:10,489 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c [2023-12-19 01:20:10,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ca86204/0d0e9f063081414fbe0a08e5e0131b28/FLAGa26ee34c9 [2023-12-19 01:20:10,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18ca86204/0d0e9f063081414fbe0a08e5e0131b28 [2023-12-19 01:20:10,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:20:10,537 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:20:10,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:20:10,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:20:10,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:20:10,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:20:10" (1/1) ... [2023-12-19 01:20:10,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b02ac7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:10, skipping insertion in model container [2023-12-19 01:20:10,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:20:10" (1/1) ... [2023-12-19 01:20:10,661 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:20:11,024 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c[20426,20439] [2023-12-19 01:20:11,087 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c[21268,21281] [2023-12-19 01:20:11,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:20:11,730 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:20:11,775 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c[20426,20439] [2023-12-19 01:20:11,777 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c[21268,21281] [2023-12-19 01:20:12,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:20:12,133 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:20:12,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12 WrapperNode [2023-12-19 01:20:12,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:20:12,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:20:12,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:20:12,136 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:20:12,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:12,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:12,591 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5214 [2023-12-19 01:20:12,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:20:12,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:20:12,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:20:12,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:20:12,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:12,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:12,660 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:12,788 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]. [2023-12-19 01:20:12,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:12,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:12,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:12,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:13,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:13,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:13,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:20:13,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:20:13,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:20:13,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:20:13,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (1/1) ... [2023-12-19 01:20:13,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:20:13,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:20:13,126 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) [2023-12-19 01:20:13,128 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 [2023-12-19 01:20:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:20:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:20:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:20:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:20:13,271 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:20:13,273 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:20:16,661 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:20:16,703 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:20:16,703 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 01:20:16,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:20:16 BoogieIcfgContainer [2023-12-19 01:20:16,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:20:16,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:20:16,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:20:16,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:20:16,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:20:10" (1/3) ... [2023-12-19 01:20:16,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6452119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:20:16, skipping insertion in model container [2023-12-19 01:20:16,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:20:12" (2/3) ... [2023-12-19 01:20:16,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6452119b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:20:16, skipping insertion in model container [2023-12-19 01:20:16,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:20:16" (3/3) ... [2023-12-19 01:20:16,713 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label07.c [2023-12-19 01:20:16,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:20:16,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:20:16,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:20:16,793 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;@2a114494, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:20:16,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:20:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:16,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-19 01:20:16,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:16,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-19 01:20:16,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:16,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:16,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1543685755, now seen corresponding path program 1 times [2023-12-19 01:20:16,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:16,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603503399] [2023-12-19 01:20:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:16,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:17,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:17,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603503399] [2023-12-19 01:20:17,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603503399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:17,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:17,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:20:17,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356552236] [2023-12-19 01:20:17,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:17,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:17,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:17,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:17,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:17,152 INFO L87 Difference]: Start difference. First operand has 865 states, 862 states have (on average 1.9721577726218098) internal successors, (1700), 864 states have internal predecessors, (1700), 0 states have call successors, (0), 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:20,161 INFO L93 Difference]: Finished difference Result 2430 states and 4795 transitions. [2023-12-19 01:20:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-19 01:20:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:20,182 INFO L225 Difference]: With dead ends: 2430 [2023-12-19 01:20:20,182 INFO L226 Difference]: Without dead ends: 1612 [2023-12-19 01:20:20,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:20,190 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1058 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:20,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 307 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:20:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-19 01:20:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-19 01:20:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.8434782608695652) internal successors, (2968), 1611 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:20,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2968 transitions. [2023-12-19 01:20:20,325 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2968 transitions. Word has length 6 [2023-12-19 01:20:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:20,325 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2968 transitions. [2023-12-19 01:20:20,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2968 transitions. [2023-12-19 01:20:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-19 01:20:20,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:20,327 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] [2023-12-19 01:20:20,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:20:20,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:20,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:20,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1712634287, now seen corresponding path program 1 times [2023-12-19 01:20:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:20,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499184689] [2023-12-19 01:20:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:20,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:20,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:20,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499184689] [2023-12-19 01:20:20,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499184689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:20,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:20,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:20:20,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261049915] [2023-12-19 01:20:20,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:20,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:20:20,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:20,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:20:20,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:20:20,631 INFO L87 Difference]: Start difference. First operand 1612 states and 2968 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:20,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:20,702 INFO L93 Difference]: Finished difference Result 1668 states and 3057 transitions. [2023-12-19 01:20:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:20:20,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-19 01:20:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:20,709 INFO L225 Difference]: With dead ends: 1668 [2023-12-19 01:20:20,709 INFO L226 Difference]: Without dead ends: 1612 [2023-12-19 01:20:20,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:20:20,710 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 0 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:20,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4824 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-12-19 01:20:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2023-12-19 01:20:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1610 states have (on average 1.8124223602484473) internal successors, (2918), 1611 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2918 transitions. [2023-12-19 01:20:20,741 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2918 transitions. Word has length 25 [2023-12-19 01:20:20,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:20,742 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2918 transitions. [2023-12-19 01:20:20,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2918 transitions. [2023-12-19 01:20:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 01:20:20,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:20,744 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] [2023-12-19 01:20:20,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:20:20,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:20,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:20,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1559561318, now seen corresponding path program 1 times [2023-12-19 01:20:20,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786285832] [2023-12-19 01:20:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:20,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:21,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:21,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786285832] [2023-12-19 01:20:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786285832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:21,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:21,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273307629] [2023-12-19 01:20:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:21,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:21,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:21,042 INFO L87 Difference]: Start difference. First operand 1612 states and 2918 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:21,439 INFO L93 Difference]: Finished difference Result 2354 states and 4122 transitions. [2023-12-19 01:20:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:20:21,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-19 01:20:21,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:21,447 INFO L225 Difference]: With dead ends: 2354 [2023-12-19 01:20:21,447 INFO L226 Difference]: Without dead ends: 2301 [2023-12-19 01:20:21,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-19 01:20:21,449 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 11475 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11475 SdHoareTripleChecker+Valid, 5036 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:21,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11475 Valid, 5036 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:20:21,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-12-19 01:20:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1663. [2023-12-19 01:20:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.806742925948224) internal successors, (3001), 1662 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 3001 transitions. [2023-12-19 01:20:21,483 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 3001 transitions. Word has length 74 [2023-12-19 01:20:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:21,483 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 3001 transitions. [2023-12-19 01:20:21,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 3001 transitions. [2023-12-19 01:20:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 01:20:21,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:21,485 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:20:21,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:20:21,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:21,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:21,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2035398249, now seen corresponding path program 1 times [2023-12-19 01:20:21,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:21,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031838111] [2023-12-19 01:20:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:21,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:21,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:21,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031838111] [2023-12-19 01:20:21,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031838111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:21,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:21,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 01:20:21,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014660438] [2023-12-19 01:20:21,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:21,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:21,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:21,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:21,692 INFO L87 Difference]: Start difference. First operand 1663 states and 3001 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:24,549 INFO L93 Difference]: Finished difference Result 4669 states and 8552 transitions. [2023-12-19 01:20:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:24,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-19 01:20:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:24,559 INFO L225 Difference]: With dead ends: 4669 [2023-12-19 01:20:24,560 INFO L226 Difference]: Without dead ends: 3165 [2023-12-19 01:20:24,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:24,564 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 870 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:24,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 612 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:20:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2023-12-19 01:20:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 3165. [2023-12-19 01:20:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3163 states have (on average 1.556433765412583) internal successors, (4923), 3164 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 4923 transitions. [2023-12-19 01:20:24,640 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 4923 transitions. Word has length 75 [2023-12-19 01:20:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:24,640 INFO L495 AbstractCegarLoop]: Abstraction has 3165 states and 4923 transitions. [2023-12-19 01:20:24,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 4923 transitions. [2023-12-19 01:20:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:20:24,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:24,643 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] [2023-12-19 01:20:24,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:20:24,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:24,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash -327840202, now seen corresponding path program 1 times [2023-12-19 01:20:24,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:24,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764666127] [2023-12-19 01:20:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:24,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:24,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764666127] [2023-12-19 01:20:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764666127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:24,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446470110] [2023-12-19 01:20:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:24,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:24,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:24,739 INFO L87 Difference]: Start difference. First operand 3165 states and 4923 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:24,765 INFO L93 Difference]: Finished difference Result 3362 states and 5242 transitions. [2023-12-19 01:20:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:24,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-19 01:20:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:24,776 INFO L225 Difference]: With dead ends: 3362 [2023-12-19 01:20:24,776 INFO L226 Difference]: Without dead ends: 3258 [2023-12-19 01:20:24,777 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 [2023-12-19 01:20:24,778 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 1496 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1654 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 [2023-12-19 01:20:24,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1654 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2023-12-19 01:20:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 3256. [2023-12-19 01:20:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 3254 states have (on average 1.5577750460971111) internal successors, (5069), 3255 states have internal predecessors, (5069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 5069 transitions. [2023-12-19 01:20:24,831 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 5069 transitions. Word has length 76 [2023-12-19 01:20:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:24,831 INFO L495 AbstractCegarLoop]: Abstraction has 3256 states and 5069 transitions. [2023-12-19 01:20:24,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 5069 transitions. [2023-12-19 01:20:24,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:20:24,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:24,832 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] [2023-12-19 01:20:24,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:20:24,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:24,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:24,833 INFO L85 PathProgramCache]: Analyzing trace with hash -325695250, now seen corresponding path program 1 times [2023-12-19 01:20:24,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:24,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000656725] [2023-12-19 01:20:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:24,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:25,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:25,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000656725] [2023-12-19 01:20:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000656725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:25,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:25,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:25,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547191482] [2023-12-19 01:20:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:25,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:25,184 INFO L87 Difference]: Start difference. First operand 3256 states and 5069 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:25,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:25,477 INFO L93 Difference]: Finished difference Result 3453 states and 5385 transitions. [2023-12-19 01:20:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:25,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-19 01:20:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:25,487 INFO L225 Difference]: With dead ends: 3453 [2023-12-19 01:20:25,488 INFO L226 Difference]: Without dead ends: 3258 [2023-12-19 01:20:25,489 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 [2023-12-19 01:20:25,490 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 7545 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7545 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:25,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7545 Valid, 2059 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2023-12-19 01:20:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 3256. [2023-12-19 01:20:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 3254 states have (on average 1.5571604179471419) internal successors, (5067), 3255 states have internal predecessors, (5067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 5067 transitions. [2023-12-19 01:20:25,555 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 5067 transitions. Word has length 76 [2023-12-19 01:20:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:25,557 INFO L495 AbstractCegarLoop]: Abstraction has 3256 states and 5067 transitions. [2023-12-19 01:20:25,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:25,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 5067 transitions. [2023-12-19 01:20:25,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 01:20:25,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:25,558 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] [2023-12-19 01:20:25,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:20:25,558 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:25,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1634972681, now seen corresponding path program 1 times [2023-12-19 01:20:25,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:25,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662242886] [2023-12-19 01:20:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:25,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:25,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:25,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662242886] [2023-12-19 01:20:25,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662242886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:25,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:25,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 01:20:25,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586257425] [2023-12-19 01:20:25,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:25,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:20:25,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:25,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:20:25,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:20:25,740 INFO L87 Difference]: Start difference. First operand 3256 states and 5067 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:25,770 INFO L93 Difference]: Finished difference Result 3264 states and 5076 transitions. [2023-12-19 01:20:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:20:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-19 01:20:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:25,778 INFO L225 Difference]: With dead ends: 3264 [2023-12-19 01:20:25,779 INFO L226 Difference]: Without dead ends: 3262 [2023-12-19 01:20:25,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:20:25,782 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:25,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4717 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2023-12-19 01:20:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3260. [2023-12-19 01:20:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3258 states have (on average 1.5561694290976058) internal successors, (5070), 3259 states have internal predecessors, (5070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 5070 transitions. [2023-12-19 01:20:25,835 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 5070 transitions. Word has length 77 [2023-12-19 01:20:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:25,835 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 5070 transitions. [2023-12-19 01:20:25,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 5070 transitions. [2023-12-19 01:20:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:20:25,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:25,839 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] [2023-12-19 01:20:25,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:20:25,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:25,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash -562303954, now seen corresponding path program 1 times [2023-12-19 01:20:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:25,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819248594] [2023-12-19 01:20:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:25,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:25,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819248594] [2023-12-19 01:20:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819248594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:25,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:25,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:25,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496354357] [2023-12-19 01:20:25,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:25,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:25,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:25,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:25,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:25,901 INFO L87 Difference]: Start difference. First operand 3260 states and 5070 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:25,934 INFO L93 Difference]: Finished difference Result 3470 states and 5403 transitions. [2023-12-19 01:20:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:25,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:20:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:25,943 INFO L225 Difference]: With dead ends: 3470 [2023-12-19 01:20:25,944 INFO L226 Difference]: Without dead ends: 3362 [2023-12-19 01:20:25,948 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 [2023-12-19 01:20:25,949 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1514 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1732 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 [2023-12-19 01:20:25,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2023-12-19 01:20:25,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 3360. [2023-12-19 01:20:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3358 states have (on average 1.5565812983918998) internal successors, (5227), 3359 states have internal predecessors, (5227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 5227 transitions. [2023-12-19 01:20:26,009 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 5227 transitions. Word has length 78 [2023-12-19 01:20:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:26,010 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 5227 transitions. [2023-12-19 01:20:26,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 5227 transitions. [2023-12-19 01:20:26,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:20:26,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:26,011 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] [2023-12-19 01:20:26,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:20:26,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:26,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:26,012 INFO L85 PathProgramCache]: Analyzing trace with hash 193080110, now seen corresponding path program 1 times [2023-12-19 01:20:26,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:26,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723349533] [2023-12-19 01:20:26,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:26,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:26,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:26,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723349533] [2023-12-19 01:20:26,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723349533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:26,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:26,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:26,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312429166] [2023-12-19 01:20:26,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:26,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:26,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:26,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:26,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:26,071 INFO L87 Difference]: Start difference. First operand 3360 states and 5227 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:26,103 INFO L93 Difference]: Finished difference Result 3930 states and 6127 transitions. [2023-12-19 01:20:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:26,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:20:26,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:26,126 INFO L225 Difference]: With dead ends: 3930 [2023-12-19 01:20:26,126 INFO L226 Difference]: Without dead ends: 3633 [2023-12-19 01:20:26,128 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 [2023-12-19 01:20:26,128 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1512 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1738 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 [2023-12-19 01:20:26,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2023-12-19 01:20:26,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3631. [2023-12-19 01:20:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3629 states have (on average 1.556627170019289) internal successors, (5649), 3630 states have internal predecessors, (5649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 5649 transitions. [2023-12-19 01:20:26,213 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 5649 transitions. Word has length 78 [2023-12-19 01:20:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:26,213 INFO L495 AbstractCegarLoop]: Abstraction has 3631 states and 5649 transitions. [2023-12-19 01:20:26,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 5649 transitions. [2023-12-19 01:20:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:20:26,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:26,215 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] [2023-12-19 01:20:26,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:20:26,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:26,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash -217306578, now seen corresponding path program 1 times [2023-12-19 01:20:26,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:26,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020047702] [2023-12-19 01:20:26,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:26,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:26,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:26,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020047702] [2023-12-19 01:20:26,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020047702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:26,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:26,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:26,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419115634] [2023-12-19 01:20:26,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:26,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:26,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:26,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:26,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:26,265 INFO L87 Difference]: Start difference. First operand 3631 states and 5649 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:26,306 INFO L93 Difference]: Finished difference Result 4719 states and 7351 transitions. [2023-12-19 01:20:26,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:26,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:20:26,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:26,313 INFO L225 Difference]: With dead ends: 4719 [2023-12-19 01:20:26,314 INFO L226 Difference]: Without dead ends: 4151 [2023-12-19 01:20:26,315 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 [2023-12-19 01:20:26,315 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 1510 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1740 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 [2023-12-19 01:20:26,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:26,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2023-12-19 01:20:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 4149. [2023-12-19 01:20:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4149 states, 4147 states have (on average 1.554135519652761) internal successors, (6445), 4148 states have internal predecessors, (6445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 6445 transitions. [2023-12-19 01:20:26,467 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 6445 transitions. Word has length 78 [2023-12-19 01:20:26,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:26,467 INFO L495 AbstractCegarLoop]: Abstraction has 4149 states and 6445 transitions. [2023-12-19 01:20:26,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 6445 transitions. [2023-12-19 01:20:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:20:26,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:26,469 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] [2023-12-19 01:20:26,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:20:26,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:26,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash -485889746, now seen corresponding path program 1 times [2023-12-19 01:20:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:26,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350599553] [2023-12-19 01:20:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:26,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:26,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350599553] [2023-12-19 01:20:26,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350599553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:26,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:26,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:26,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814243037] [2023-12-19 01:20:26,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:26,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:26,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:26,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:26,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:26,529 INFO L87 Difference]: Start difference. First operand 4149 states and 6445 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:26,627 INFO L93 Difference]: Finished difference Result 6225 states and 9655 transitions. [2023-12-19 01:20:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:26,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:20:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:26,636 INFO L225 Difference]: With dead ends: 6225 [2023-12-19 01:20:26,636 INFO L226 Difference]: Without dead ends: 5139 [2023-12-19 01:20:26,640 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 [2023-12-19 01:20:26,640 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1508 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1742 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 [2023-12-19 01:20:26,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1742 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:26,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2023-12-19 01:20:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 5137. [2023-12-19 01:20:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5135 states have (on average 1.546445959104187) internal successors, (7941), 5136 states have internal predecessors, (7941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 7941 transitions. [2023-12-19 01:20:26,821 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 7941 transitions. Word has length 78 [2023-12-19 01:20:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:26,821 INFO L495 AbstractCegarLoop]: Abstraction has 5137 states and 7941 transitions. [2023-12-19 01:20:26,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:26,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 7941 transitions. [2023-12-19 01:20:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:20:26,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:26,822 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] [2023-12-19 01:20:26,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:20:26,823 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:26,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1071601874, now seen corresponding path program 1 times [2023-12-19 01:20:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530369361] [2023-12-19 01:20:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:26,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530369361] [2023-12-19 01:20:26,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530369361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:26,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:26,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:26,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177096093] [2023-12-19 01:20:26,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:26,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:26,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:26,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:26,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:26,930 INFO L87 Difference]: Start difference. First operand 5137 states and 7941 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:27,001 INFO L93 Difference]: Finished difference Result 9093 states and 13975 transitions. [2023-12-19 01:20:27,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:27,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:20:27,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:27,015 INFO L225 Difference]: With dead ends: 9093 [2023-12-19 01:20:27,015 INFO L226 Difference]: Without dead ends: 7019 [2023-12-19 01:20:27,021 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 [2023-12-19 01:20:27,022 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 1504 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1738 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 [2023-12-19 01:20:27,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2023-12-19 01:20:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 7017. [2023-12-19 01:20:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7017 states, 7015 states have (on average 1.5311475409836066) internal successors, (10741), 7016 states have internal predecessors, (10741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7017 states to 7017 states and 10741 transitions. [2023-12-19 01:20:27,152 INFO L78 Accepts]: Start accepts. Automaton has 7017 states and 10741 transitions. Word has length 78 [2023-12-19 01:20:27,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:27,153 INFO L495 AbstractCegarLoop]: Abstraction has 7017 states and 10741 transitions. [2023-12-19 01:20:27,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:27,153 INFO L276 IsEmpty]: Start isEmpty. Operand 7017 states and 10741 transitions. [2023-12-19 01:20:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:20:27,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:27,154 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] [2023-12-19 01:20:27,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:20:27,154 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:27,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash -182868434, now seen corresponding path program 1 times [2023-12-19 01:20:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518223871] [2023-12-19 01:20:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:27,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:27,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518223871] [2023-12-19 01:20:27,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518223871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:27,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:27,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013762702] [2023-12-19 01:20:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:27,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:27,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:27,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:27,198 INFO L87 Difference]: Start difference. First operand 7017 states and 10741 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:27,327 INFO L93 Difference]: Finished difference Result 14541 states and 22039 transitions. [2023-12-19 01:20:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:27,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:20:27,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:27,345 INFO L225 Difference]: With dead ends: 14541 [2023-12-19 01:20:27,345 INFO L226 Difference]: Without dead ends: 10587 [2023-12-19 01:20:27,354 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 [2023-12-19 01:20:27,356 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1502 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1740 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 [2023-12-19 01:20:27,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1740 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10587 states. [2023-12-19 01:20:27,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10587 to 10585. [2023-12-19 01:20:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10585 states, 10583 states have (on average 1.5077955211187755) internal successors, (15957), 10584 states have internal predecessors, (15957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 15957 transitions. [2023-12-19 01:20:27,576 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 15957 transitions. Word has length 78 [2023-12-19 01:20:27,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:27,576 INFO L495 AbstractCegarLoop]: Abstraction has 10585 states and 15957 transitions. [2023-12-19 01:20:27,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:27,576 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 15957 transitions. [2023-12-19 01:20:27,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 01:20:27,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:27,577 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] [2023-12-19 01:20:27,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:20:27,577 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:27,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -445945810, now seen corresponding path program 1 times [2023-12-19 01:20:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:27,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314383618] [2023-12-19 01:20:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314383618] [2023-12-19 01:20:27,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314383618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:27,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:27,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:27,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764702334] [2023-12-19 01:20:27,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:27,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:20:27,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:27,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:20:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:20:27,623 INFO L87 Difference]: Start difference. First operand 10585 states and 15957 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:27,894 INFO L93 Difference]: Finished difference Result 24861 states and 37015 transitions. [2023-12-19 01:20:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:20:27,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 01:20:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:27,920 INFO L225 Difference]: With dead ends: 24861 [2023-12-19 01:20:27,920 INFO L226 Difference]: Without dead ends: 17339 [2023-12-19 01:20:27,928 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 [2023-12-19 01:20:27,928 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1506 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1744 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 [2023-12-19 01:20:27,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1744 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:20:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17339 states. [2023-12-19 01:20:28,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17339 to 17337. [2023-12-19 01:20:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17337 states, 17335 states have (on average 1.4779925007210846) internal successors, (25621), 17336 states have internal predecessors, (25621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:28,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17337 states to 17337 states and 25621 transitions. [2023-12-19 01:20:28,282 INFO L78 Accepts]: Start accepts. Automaton has 17337 states and 25621 transitions. Word has length 78 [2023-12-19 01:20:28,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:28,282 INFO L495 AbstractCegarLoop]: Abstraction has 17337 states and 25621 transitions. [2023-12-19 01:20:28,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 17337 states and 25621 transitions. [2023-12-19 01:20:28,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 01:20:28,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:28,283 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:20:28,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:20:28,284 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:28,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash 434529923, now seen corresponding path program 1 times [2023-12-19 01:20:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:28,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413855363] [2023-12-19 01:20:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:28,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:20:28,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:28,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413855363] [2023-12-19 01:20:28,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413855363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:28,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:28,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:20:28,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142818328] [2023-12-19 01:20:28,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:28,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 01:20:28,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:28,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 01:20:28,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 01:20:28,387 INFO L87 Difference]: Start difference. First operand 17337 states and 25621 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:32,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:32,804 INFO L93 Difference]: Finished difference Result 24098 states and 35959 transitions. [2023-12-19 01:20:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 01:20:32,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-19 01:20:32,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:32,836 INFO L225 Difference]: With dead ends: 24098 [2023-12-19 01:20:32,837 INFO L226 Difference]: Without dead ends: 21092 [2023-12-19 01:20:32,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:20:32,844 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 2455 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4921 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 4921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:32,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 433 Invalid, 5725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 4921 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 01:20:32,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21092 states. [2023-12-19 01:20:33,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21092 to 21092. [2023-12-19 01:20:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21092 states, 21090 states have (on average 1.4654812707444287) internal successors, (30907), 21091 states have internal predecessors, (30907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21092 states to 21092 states and 30907 transitions. [2023-12-19 01:20:33,231 INFO L78 Accepts]: Start accepts. Automaton has 21092 states and 30907 transitions. Word has length 83 [2023-12-19 01:20:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:33,231 INFO L495 AbstractCegarLoop]: Abstraction has 21092 states and 30907 transitions. [2023-12-19 01:20:33,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand 21092 states and 30907 transitions. [2023-12-19 01:20:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:33,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:33,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:33,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:20:33,235 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:33,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash 528849474, now seen corresponding path program 1 times [2023-12-19 01:20:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:33,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595545425] [2023-12-19 01:20:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:33,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:20:33,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595545425] [2023-12-19 01:20:33,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595545425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:33,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:33,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007675780] [2023-12-19 01:20:33,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:33,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:33,461 INFO L87 Difference]: Start difference. First operand 21092 states and 30907 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:35,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:35,376 INFO L93 Difference]: Finished difference Result 119604 states and 174851 transitions. [2023-12-19 01:20:35,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:35,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:20:35,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:35,557 INFO L225 Difference]: With dead ends: 119604 [2023-12-19 01:20:35,558 INFO L226 Difference]: Without dead ends: 109618 [2023-12-19 01:20:35,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:35,591 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 9843 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9843 SdHoareTripleChecker+Valid, 4635 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:35,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9843 Valid, 4635 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 01:20:35,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109618 states. [2023-12-19 01:20:37,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109618 to 33252. [2023-12-19 01:20:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33252 states, 33250 states have (on average 1.4588571428571429) internal successors, (48507), 33251 states have internal predecessors, (48507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33252 states to 33252 states and 48507 transitions. [2023-12-19 01:20:37,299 INFO L78 Accepts]: Start accepts. Automaton has 33252 states and 48507 transitions. Word has length 100 [2023-12-19 01:20:37,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:37,299 INFO L495 AbstractCegarLoop]: Abstraction has 33252 states and 48507 transitions. [2023-12-19 01:20:37,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 33252 states and 48507 transitions. [2023-12-19 01:20:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:37,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:37,304 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:37,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:20:37,304 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:37,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1284233538, now seen corresponding path program 1 times [2023-12-19 01:20:37,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:37,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776658497] [2023-12-19 01:20:37,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:37,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:20:37,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:37,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776658497] [2023-12-19 01:20:37,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776658497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:37,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:37,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627019818] [2023-12-19 01:20:37,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:37,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:37,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:37,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:37,465 INFO L87 Difference]: Start difference. First operand 33252 states and 48507 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:39,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:39,799 INFO L93 Difference]: Finished difference Result 133876 states and 195587 transitions. [2023-12-19 01:20:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:39,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:20:39,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:40,026 INFO L225 Difference]: With dead ends: 133876 [2023-12-19 01:20:40,026 INFO L226 Difference]: Without dead ends: 119602 [2023-12-19 01:20:40,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:40,065 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 9847 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9847 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:40,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9847 Valid, 4570 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:40,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119602 states. [2023-12-19 01:20:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119602 to 52516. [2023-12-19 01:20:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52516 states, 52514 states have (on average 1.4538408805270975) internal successors, (76347), 52515 states have internal predecessors, (76347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52516 states to 52516 states and 76347 transitions. [2023-12-19 01:20:42,056 INFO L78 Accepts]: Start accepts. Automaton has 52516 states and 76347 transitions. Word has length 100 [2023-12-19 01:20:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:42,056 INFO L495 AbstractCegarLoop]: Abstraction has 52516 states and 76347 transitions. [2023-12-19 01:20:42,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 52516 states and 76347 transitions. [2023-12-19 01:20:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:42,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:42,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:42,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:20:42,062 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:42,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash 873846850, now seen corresponding path program 1 times [2023-12-19 01:20:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056689121] [2023-12-19 01:20:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 01:20:42,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:42,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056689121] [2023-12-19 01:20:42,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056689121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:42,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:42,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:42,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982246462] [2023-12-19 01:20:42,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:42,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:42,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:42,214 INFO L87 Difference]: Start difference. First operand 52516 states and 76347 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2023-12-19 01:20:45,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:45,469 INFO L93 Difference]: Finished difference Result 148148 states and 216259 transitions. [2023-12-19 01:20:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:45,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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 100 [2023-12-19 01:20:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:45,696 INFO L225 Difference]: With dead ends: 148148 [2023-12-19 01:20:45,696 INFO L226 Difference]: Without dead ends: 133874 [2023-12-19 01:20:45,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:45,734 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 9866 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9866 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:45,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9866 Valid, 4536 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133874 states. [2023-12-19 01:20:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133874 to 66788. [2023-12-19 01:20:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66788 states, 66786 states have (on average 1.4526846943970293) internal successors, (97019), 66787 states have internal predecessors, (97019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66788 states to 66788 states and 97019 transitions. [2023-12-19 01:20:48,522 INFO L78 Accepts]: Start accepts. Automaton has 66788 states and 97019 transitions. Word has length 100 [2023-12-19 01:20:48,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:48,522 INFO L495 AbstractCegarLoop]: Abstraction has 66788 states and 97019 transitions. [2023-12-19 01:20:48,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 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) [2023-12-19 01:20:48,523 INFO L276 IsEmpty]: Start isEmpty. Operand 66788 states and 97019 transitions. [2023-12-19 01:20:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:48,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:48,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:48,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:20:48,529 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:48,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash 605263682, now seen corresponding path program 1 times [2023-12-19 01:20:48,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:48,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987554267] [2023-12-19 01:20:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:48,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:20:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987554267] [2023-12-19 01:20:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987554267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:48,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:48,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879109824] [2023-12-19 01:20:48,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:48,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:48,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:48,684 INFO L87 Difference]: Start difference. First operand 66788 states and 97019 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:52,279 INFO L93 Difference]: Finished difference Result 162420 states and 236931 transitions. [2023-12-19 01:20:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 01:20:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:52,503 INFO L225 Difference]: With dead ends: 162420 [2023-12-19 01:20:52,504 INFO L226 Difference]: Without dead ends: 148146 [2023-12-19 01:20:52,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:20:52,534 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 9953 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9953 SdHoareTripleChecker+Valid, 4477 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:20:52,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9953 Valid, 4477 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:20:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148146 states. [2023-12-19 01:20:55,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148146 to 81060. [2023-12-19 01:20:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81060 states, 81058 states have (on average 1.4519356510153223) internal successors, (117691), 81059 states have internal predecessors, (117691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81060 states to 81060 states and 117691 transitions. [2023-12-19 01:20:55,415 INFO L78 Accepts]: Start accepts. Automaton has 81060 states and 117691 transitions. Word has length 100 [2023-12-19 01:20:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:20:55,415 INFO L495 AbstractCegarLoop]: Abstraction has 81060 states and 117691 transitions. [2023-12-19 01:20:55,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:20:55,415 INFO L276 IsEmpty]: Start isEmpty. Operand 81060 states and 117691 transitions. [2023-12-19 01:20:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:20:55,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:20:55,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:20:55,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:20:55,422 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:20:55,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:20:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash 19551554, now seen corresponding path program 1 times [2023-12-19 01:20:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:20:55,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700963983] [2023-12-19 01:20:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:20:55,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:20:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:20:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 01:20:55,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:20:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700963983] [2023-12-19 01:20:55,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700963983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:20:55,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:20:55,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:20:55,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049214158] [2023-12-19 01:20:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:20:55,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:20:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:20:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:20:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:20:55,562 INFO L87 Difference]: Start difference. First operand 81060 states and 117691 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 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) [2023-12-19 01:20:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:20:59,688 INFO L93 Difference]: Finished difference Result 176692 states and 257603 transitions. [2023-12-19 01:20:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:20:59,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 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 100 [2023-12-19 01:20:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:20:59,959 INFO L225 Difference]: With dead ends: 176692 [2023-12-19 01:20:59,959 INFO L226 Difference]: Without dead ends: 162418 [2023-12-19 01:21:00,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:21:00,006 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 10038 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10038 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:00,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10038 Valid, 4489 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:21:00,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162418 states. [2023-12-19 01:21:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162418 to 95332. [2023-12-19 01:21:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95332 states, 95330 states have (on average 1.4514108884926047) internal successors, (138363), 95331 states have internal predecessors, (138363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95332 states to 95332 states and 138363 transitions. [2023-12-19 01:21:03,990 INFO L78 Accepts]: Start accepts. Automaton has 95332 states and 138363 transitions. Word has length 100 [2023-12-19 01:21:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:03,991 INFO L495 AbstractCegarLoop]: Abstraction has 95332 states and 138363 transitions. [2023-12-19 01:21:03,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 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) [2023-12-19 01:21:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 95332 states and 138363 transitions. [2023-12-19 01:21:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:21:03,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:03,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:03,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:21:03,998 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:03,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash 908284994, now seen corresponding path program 1 times [2023-12-19 01:21:03,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:03,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677954554] [2023-12-19 01:21:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:03,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:21:04,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:04,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677954554] [2023-12-19 01:21:04,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677954554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:04,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:04,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:21:04,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937809123] [2023-12-19 01:21:04,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:04,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:21:04,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:04,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:21:04,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:21:04,132 INFO L87 Difference]: Start difference. First operand 95332 states and 138363 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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) [2023-12-19 01:21:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:08,842 INFO L93 Difference]: Finished difference Result 190964 states and 278275 transitions. [2023-12-19 01:21:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:21:08,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 100 [2023-12-19 01:21:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:09,244 INFO L225 Difference]: With dead ends: 190964 [2023-12-19 01:21:09,244 INFO L226 Difference]: Without dead ends: 176690 [2023-12-19 01:21:09,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:21:09,290 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 9909 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9909 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:09,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9909 Valid, 4520 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:21:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176690 states. [2023-12-19 01:21:13,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176690 to 109604. [2023-12-19 01:21:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109604 states, 109602 states have (on average 1.4510227915548986) internal successors, (159035), 109603 states have internal predecessors, (159035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109604 states to 109604 states and 159035 transitions. [2023-12-19 01:21:13,864 INFO L78 Accepts]: Start accepts. Automaton has 109604 states and 159035 transitions. Word has length 100 [2023-12-19 01:21:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:13,864 INFO L495 AbstractCegarLoop]: Abstraction has 109604 states and 159035 transitions. [2023-12-19 01:21:13,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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) [2023-12-19 01:21:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 109604 states and 159035 transitions. [2023-12-19 01:21:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 01:21:13,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:13,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:13,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:21:13,873 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:13,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:13,874 INFO L85 PathProgramCache]: Analyzing trace with hash 645207618, now seen corresponding path program 1 times [2023-12-19 01:21:13,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:13,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997350639] [2023-12-19 01:21:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:13,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 01:21:14,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:14,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997350639] [2023-12-19 01:21:14,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997350639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:14,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:14,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:21:14,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705821880] [2023-12-19 01:21:14,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:14,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:21:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:21:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:21:14,002 INFO L87 Difference]: Start difference. First operand 109604 states and 159035 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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) [2023-12-19 01:21:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:19,377 INFO L93 Difference]: Finished difference Result 205236 states and 298947 transitions. [2023-12-19 01:21:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:21:19,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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 100 [2023-12-19 01:21:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:19,694 INFO L225 Difference]: With dead ends: 205236 [2023-12-19 01:21:19,695 INFO L226 Difference]: Without dead ends: 190962 [2023-12-19 01:21:19,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:21:19,761 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 9791 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9791 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:19,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9791 Valid, 4715 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:21:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190962 states. [2023-12-19 01:21:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190962 to 123876. [2023-12-19 01:21:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123876 states, 123874 states have (on average 1.4507241228990748) internal successors, (179707), 123875 states have internal predecessors, (179707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123876 states to 123876 states and 179707 transitions. [2023-12-19 01:21:25,081 INFO L78 Accepts]: Start accepts. Automaton has 123876 states and 179707 transitions. Word has length 100 [2023-12-19 01:21:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:25,081 INFO L495 AbstractCegarLoop]: Abstraction has 123876 states and 179707 transitions. [2023-12-19 01:21:25,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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) [2023-12-19 01:21:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 123876 states and 179707 transitions. [2023-12-19 01:21:25,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 01:21:25,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:25,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:25,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:21:25,087 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:25,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1809850130, now seen corresponding path program 1 times [2023-12-19 01:21:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958816271] [2023-12-19 01:21:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958816271] [2023-12-19 01:21:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958816271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:25,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:25,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:25,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497282761] [2023-12-19 01:21:25,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:25,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:25,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:25,187 INFO L87 Difference]: Start difference. First operand 123876 states and 179707 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:28,766 INFO L93 Difference]: Finished difference Result 240936 states and 349373 transitions. [2023-12-19 01:21:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:28,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2023-12-19 01:21:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:28,966 INFO L225 Difference]: With dead ends: 240936 [2023-12-19 01:21:28,966 INFO L226 Difference]: Without dead ends: 123878 [2023-12-19 01:21:29,023 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 [2023-12-19 01:21:29,023 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 61 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:29,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3191 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:29,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123878 states. [2023-12-19 01:21:33,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123878 to 123876. [2023-12-19 01:21:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123876 states, 123874 states have (on average 1.4380660994236079) internal successors, (178139), 123875 states have internal predecessors, (178139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123876 states to 123876 states and 178139 transitions. [2023-12-19 01:21:33,708 INFO L78 Accepts]: Start accepts. Automaton has 123876 states and 178139 transitions. Word has length 101 [2023-12-19 01:21:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:33,710 INFO L495 AbstractCegarLoop]: Abstraction has 123876 states and 178139 transitions. [2023-12-19 01:21:33,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 123876 states and 178139 transitions. [2023-12-19 01:21:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 01:21:33,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:33,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:33,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:21:33,717 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:33,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1372280522, now seen corresponding path program 1 times [2023-12-19 01:21:33,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:33,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795726536] [2023-12-19 01:21:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:33,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:33,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795726536] [2023-12-19 01:21:33,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795726536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:33,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:33,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:33,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105511642] [2023-12-19 01:21:33,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:33,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:33,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:33,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:33,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:33,820 INFO L87 Difference]: Start difference. First operand 123876 states and 178139 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:35,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:35,349 INFO L93 Difference]: Finished difference Result 166334 states and 239636 transitions. [2023-12-19 01:21:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:35,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-19 01:21:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:35,418 INFO L225 Difference]: With dead ends: 166334 [2023-12-19 01:21:35,419 INFO L226 Difference]: Without dead ends: 49276 [2023-12-19 01:21:35,441 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 [2023-12-19 01:21:35,442 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 55 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:35,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3188 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49276 states. [2023-12-19 01:21:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49276 to 49269. [2023-12-19 01:21:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49269 states, 49267 states have (on average 1.4408833499096758) internal successors, (70988), 49268 states have internal predecessors, (70988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49269 states to 49269 states and 70988 transitions. [2023-12-19 01:21:37,079 INFO L78 Accepts]: Start accepts. Automaton has 49269 states and 70988 transitions. Word has length 102 [2023-12-19 01:21:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:37,079 INFO L495 AbstractCegarLoop]: Abstraction has 49269 states and 70988 transitions. [2023-12-19 01:21:37,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 49269 states and 70988 transitions. [2023-12-19 01:21:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 01:21:37,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:37,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:37,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:21:37,082 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:37,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1304981984, now seen corresponding path program 1 times [2023-12-19 01:21:37,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:37,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127943061] [2023-12-19 01:21:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:37,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:37,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127943061] [2023-12-19 01:21:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127943061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:37,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:37,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60187854] [2023-12-19 01:21:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:37,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:37,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:37,147 INFO L87 Difference]: Start difference. First operand 49269 states and 70988 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:37,909 INFO L93 Difference]: Finished difference Result 70489 states and 101454 transitions. [2023-12-19 01:21:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:37,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-19 01:21:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:37,945 INFO L225 Difference]: With dead ends: 70489 [2023-12-19 01:21:37,945 INFO L226 Difference]: Without dead ends: 28055 [2023-12-19 01:21:37,970 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 [2023-12-19 01:21:37,971 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 57 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:37,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3167 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:37,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28055 states. [2023-12-19 01:21:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28055 to 28053. [2023-12-19 01:21:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28053 states, 28051 states have (on average 1.4349577555167374) internal successors, (40252), 28052 states have internal predecessors, (40252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28053 states to 28053 states and 40252 transitions. [2023-12-19 01:21:38,808 INFO L78 Accepts]: Start accepts. Automaton has 28053 states and 40252 transitions. Word has length 103 [2023-12-19 01:21:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:38,808 INFO L495 AbstractCegarLoop]: Abstraction has 28053 states and 40252 transitions. [2023-12-19 01:21:38,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 28053 states and 40252 transitions. [2023-12-19 01:21:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 01:21:38,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:38,811 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:38,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:21:38,811 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:38,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash 186281518, now seen corresponding path program 1 times [2023-12-19 01:21:38,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:38,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954158890] [2023-12-19 01:21:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:38,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:38,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954158890] [2023-12-19 01:21:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954158890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:38,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:38,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:38,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556480328] [2023-12-19 01:21:38,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:38,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:38,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:38,951 INFO L87 Difference]: Start difference. First operand 28053 states and 40252 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:39,336 INFO L93 Difference]: Finished difference Result 38665 states and 55350 transitions. [2023-12-19 01:21:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:39,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-19 01:21:39,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:39,356 INFO L225 Difference]: With dead ends: 38665 [2023-12-19 01:21:39,356 INFO L226 Difference]: Without dead ends: 17447 [2023-12-19 01:21:39,370 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 [2023-12-19 01:21:39,371 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 54 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:39,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17447 states. [2023-12-19 01:21:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17447 to 17445. [2023-12-19 01:21:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17445 states, 17443 states have (on average 1.4343862867625983) internal successors, (25020), 17444 states have internal predecessors, (25020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17445 states to 17445 states and 25020 transitions. [2023-12-19 01:21:39,826 INFO L78 Accepts]: Start accepts. Automaton has 17445 states and 25020 transitions. Word has length 105 [2023-12-19 01:21:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:39,826 INFO L495 AbstractCegarLoop]: Abstraction has 17445 states and 25020 transitions. [2023-12-19 01:21:39,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:39,826 INFO L276 IsEmpty]: Start isEmpty. Operand 17445 states and 25020 transitions. [2023-12-19 01:21:39,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 01:21:39,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:39,827 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] [2023-12-19 01:21:39,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:21:39,828 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:39,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1130957828, now seen corresponding path program 1 times [2023-12-19 01:21:39,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:39,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476793875] [2023-12-19 01:21:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:39,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:39,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:39,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476793875] [2023-12-19 01:21:39,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476793875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:39,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:39,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357024051] [2023-12-19 01:21:39,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:39,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:39,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:39,890 INFO L87 Difference]: Start difference. First operand 17445 states and 25020 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:40,067 INFO L93 Difference]: Finished difference Result 22753 states and 32502 transitions. [2023-12-19 01:21:40,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:40,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-19 01:21:40,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:40,081 INFO L225 Difference]: With dead ends: 22753 [2023-12-19 01:21:40,081 INFO L226 Difference]: Without dead ends: 12143 [2023-12-19 01:21:40,089 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 [2023-12-19 01:21:40,089 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 51 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:40,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:40,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2023-12-19 01:21:40,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 12141. [2023-12-19 01:21:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12141 states, 12139 states have (on average 1.4393277864733505) internal successors, (17472), 12140 states have internal predecessors, (17472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12141 states to 12141 states and 17472 transitions. [2023-12-19 01:21:40,399 INFO L78 Accepts]: Start accepts. Automaton has 12141 states and 17472 transitions. Word has length 107 [2023-12-19 01:21:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:40,399 INFO L495 AbstractCegarLoop]: Abstraction has 12141 states and 17472 transitions. [2023-12-19 01:21:40,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 12141 states and 17472 transitions. [2023-12-19 01:21:40,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 01:21:40,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:40,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:21:40,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:21:40,401 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:40,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash 781640522, now seen corresponding path program 1 times [2023-12-19 01:21:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738445730] [2023-12-19 01:21:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:40,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:40,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738445730] [2023-12-19 01:21:40,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738445730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:40,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:40,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70174098] [2023-12-19 01:21:40,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:40,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:40,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:40,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:40,472 INFO L87 Difference]: Start difference. First operand 12141 states and 17472 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:40,576 INFO L93 Difference]: Finished difference Result 14797 states and 21180 transitions. [2023-12-19 01:21:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:40,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-19 01:21:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:40,586 INFO L225 Difference]: With dead ends: 14797 [2023-12-19 01:21:40,586 INFO L226 Difference]: Without dead ends: 9491 [2023-12-19 01:21:40,592 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 [2023-12-19 01:21:40,592 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 48 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:40,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2023-12-19 01:21:40,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 9489. [2023-12-19 01:21:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9489 states, 9487 states have (on average 1.4474544112996732) internal successors, (13732), 9488 states have internal predecessors, (13732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9489 states to 9489 states and 13732 transitions. [2023-12-19 01:21:40,743 INFO L78 Accepts]: Start accepts. Automaton has 9489 states and 13732 transitions. Word has length 109 [2023-12-19 01:21:40,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:40,744 INFO L495 AbstractCegarLoop]: Abstraction has 9489 states and 13732 transitions. [2023-12-19 01:21:40,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand 9489 states and 13732 transitions. [2023-12-19 01:21:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 01:21:40,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:40,745 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:21:40,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:21:40,745 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:40,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:40,745 INFO L85 PathProgramCache]: Analyzing trace with hash 789257240, now seen corresponding path program 1 times [2023-12-19 01:21:40,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:40,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506323583] [2023-12-19 01:21:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:40,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:40,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:40,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506323583] [2023-12-19 01:21:40,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506323583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:21:40,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:21:40,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:21:40,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869009034] [2023-12-19 01:21:40,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:21:40,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:21:40,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:40,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:21:40,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:21:40,810 INFO L87 Difference]: Start difference. First operand 9489 states and 13732 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:40,908 INFO L93 Difference]: Finished difference Result 10819 states and 15570 transitions. [2023-12-19 01:21:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:21:40,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-12-19 01:21:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:40,918 INFO L225 Difference]: With dead ends: 10819 [2023-12-19 01:21:40,919 INFO L226 Difference]: Without dead ends: 8165 [2023-12-19 01:21:40,922 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 [2023-12-19 01:21:40,922 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 45 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:40,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2023-12-19 01:21:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8163. [2023-12-19 01:21:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8163 states, 8161 states have (on average 1.455581423845117) internal successors, (11879), 8162 states have internal predecessors, (11879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8163 states to 8163 states and 11879 transitions. [2023-12-19 01:21:41,028 INFO L78 Accepts]: Start accepts. Automaton has 8163 states and 11879 transitions. Word has length 111 [2023-12-19 01:21:41,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:41,029 INFO L495 AbstractCegarLoop]: Abstraction has 8163 states and 11879 transitions. [2023-12-19 01:21:41,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:41,029 INFO L276 IsEmpty]: Start isEmpty. Operand 8163 states and 11879 transitions. [2023-12-19 01:21:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 01:21:41,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:41,030 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] [2023-12-19 01:21:41,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 01:21:41,030 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:41,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1534885478, now seen corresponding path program 1 times [2023-12-19 01:21:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:41,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728979158] [2023-12-19 01:21:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:41,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:21:41,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:41,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728979158] [2023-12-19 01:21:41,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728979158] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:41,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427014292] [2023-12-19 01:21:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:41,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:41,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:41,165 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) [2023-12-19 01:21:41,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:21:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:41,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 01:21:41,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:21:41,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:21:41,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427014292] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:41,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:41,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-19 01:21:41,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988995652] [2023-12-19 01:21:41,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:41,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:21:41,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:41,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:21:41,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:21:41,759 INFO L87 Difference]: Start difference. First operand 8163 states and 11879 transitions. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:41,953 INFO L93 Difference]: Finished difference Result 11370 states and 16180 transitions. [2023-12-19 01:21:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:21:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 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 113 [2023-12-19 01:21:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:41,963 INFO L225 Difference]: With dead ends: 11370 [2023-12-19 01:21:41,963 INFO L226 Difference]: Without dead ends: 10042 [2023-12-19 01:21:41,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:21:41,966 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 3041 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:41,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3455 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:21:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10042 states. [2023-12-19 01:21:42,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10042 to 9955. [2023-12-19 01:21:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 9953 states have (on average 1.4237918215613383) internal successors, (14171), 9954 states have internal predecessors, (14171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 14171 transitions. [2023-12-19 01:21:42,149 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 14171 transitions. Word has length 113 [2023-12-19 01:21:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:42,149 INFO L495 AbstractCegarLoop]: Abstraction has 9955 states and 14171 transitions. [2023-12-19 01:21:42,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 14171 transitions. [2023-12-19 01:21:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 01:21:42,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:42,150 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:21:42,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:21:42,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:42,357 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:42,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:42,357 INFO L85 PathProgramCache]: Analyzing trace with hash -331751178, now seen corresponding path program 1 times [2023-12-19 01:21:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:42,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390473457] [2023-12-19 01:21:42,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:42,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:43,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390473457] [2023-12-19 01:21:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390473457] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461005898] [2023-12-19 01:21:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:43,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:43,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:43,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:21:43,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:21:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:43,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:21:43,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:43,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461005898] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:45,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:45,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 01:21:45,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474979211] [2023-12-19 01:21:45,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:45,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:21:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:21:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:21:45,064 INFO L87 Difference]: Start difference. First operand 9955 states and 14171 transitions. Second operand has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:47,168 INFO L93 Difference]: Finished difference Result 23272 states and 31647 transitions. [2023-12-19 01:21:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 01:21:47,169 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 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 114 [2023-12-19 01:21:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:47,194 INFO L225 Difference]: With dead ends: 23272 [2023-12-19 01:21:47,194 INFO L226 Difference]: Without dead ends: 20267 [2023-12-19 01:21:47,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=665, Invalid=2757, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 01:21:47,201 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 22513 mSDsluCounter, 6655 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22513 SdHoareTripleChecker+Valid, 8194 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:47,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22513 Valid, 8194 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:21:47,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20267 states. [2023-12-19 01:21:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20267 to 19311. [2023-12-19 01:21:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19311 states, 19309 states have (on average 1.3674970221140401) internal successors, (26405), 19310 states have internal predecessors, (26405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19311 states to 19311 states and 26405 transitions. [2023-12-19 01:21:47,738 INFO L78 Accepts]: Start accepts. Automaton has 19311 states and 26405 transitions. Word has length 114 [2023-12-19 01:21:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:47,738 INFO L495 AbstractCegarLoop]: Abstraction has 19311 states and 26405 transitions. [2023-12-19 01:21:47,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.535714285714286) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:47,739 INFO L276 IsEmpty]: Start isEmpty. Operand 19311 states and 26405 transitions. [2023-12-19 01:21:47,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 01:21:47,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:47,740 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] [2023-12-19 01:21:47,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 01:21:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-19 01:21:47,947 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:47,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash 677823556, now seen corresponding path program 1 times [2023-12-19 01:21:47,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:47,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11208818] [2023-12-19 01:21:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:47,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:49,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:49,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11208818] [2023-12-19 01:21:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11208818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:49,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053538107] [2023-12-19 01:21:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:49,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:49,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:49,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:21:49,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:21:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:49,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 01:21:49,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:50,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053538107] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:50,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:50,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 01:21:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176349141] [2023-12-19 01:21:50,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:50,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:21:50,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:21:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:21:50,744 INFO L87 Difference]: Start difference. First operand 19311 states and 26405 transitions. Second operand has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 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) [2023-12-19 01:21:54,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:21:54,783 INFO L93 Difference]: Finished difference Result 59957 states and 79494 transitions. [2023-12-19 01:21:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-19 01:21:54,784 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 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) Word has length 114 [2023-12-19 01:21:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:21:54,835 INFO L225 Difference]: With dead ends: 59957 [2023-12-19 01:21:54,835 INFO L226 Difference]: Without dead ends: 47531 [2023-12-19 01:21:54,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 01:21:54,846 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 25060 mSDsluCounter, 7074 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25060 SdHoareTripleChecker+Valid, 8603 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:21:54,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25060 Valid, 8603 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:21:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47531 states. [2023-12-19 01:21:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47531 to 45100. [2023-12-19 01:21:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45100 states, 45098 states have (on average 1.323495498691738) internal successors, (59687), 45099 states have internal predecessors, (59687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:21:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45100 states to 45100 states and 59687 transitions. [2023-12-19 01:21:56,282 INFO L78 Accepts]: Start accepts. Automaton has 45100 states and 59687 transitions. Word has length 114 [2023-12-19 01:21:56,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:21:56,282 INFO L495 AbstractCegarLoop]: Abstraction has 45100 states and 59687 transitions. [2023-12-19 01:21:56,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.607142857142858) internal successors, (297), 27 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) [2023-12-19 01:21:56,282 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states and 59687 transitions. [2023-12-19 01:21:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:21:56,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:21:56,284 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] [2023-12-19 01:21:56,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:21:56,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:56,493 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:21:56,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:21:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1905869276, now seen corresponding path program 1 times [2023-12-19 01:21:56,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:21:56,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445685364] [2023-12-19 01:21:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:56,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:21:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:57,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:21:57,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445685364] [2023-12-19 01:21:57,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445685364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:21:57,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954945184] [2023-12-19 01:21:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:21:57,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:21:57,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:21:57,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:21:57,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 01:21:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:21:57,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 01:21:57,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:21:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:57,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:21:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:21:58,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954945184] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:21:58,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:21:58,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 01:21:58,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626032447] [2023-12-19 01:21:58,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:21:58,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 01:21:58,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:21:58,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 01:21:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2023-12-19 01:21:58,673 INFO L87 Difference]: Start difference. First operand 45100 states and 59687 transitions. Second operand has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:03,230 INFO L93 Difference]: Finished difference Result 129020 states and 168749 transitions. [2023-12-19 01:22:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 01:22:03,231 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 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 115 [2023-12-19 01:22:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:03,369 INFO L225 Difference]: With dead ends: 129020 [2023-12-19 01:22:03,369 INFO L226 Difference]: Without dead ends: 94591 [2023-12-19 01:22:03,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=684, Invalid=2976, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 01:22:03,403 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 20655 mSDsluCounter, 10113 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20655 SdHoareTripleChecker+Valid, 11686 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:03,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20655 Valid, 11686 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:22:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94591 states. [2023-12-19 01:22:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94591 to 80933. [2023-12-19 01:22:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80933 states, 80931 states have (on average 1.308546786768976) internal successors, (105902), 80932 states have internal predecessors, (105902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:06,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80933 states to 80933 states and 105902 transitions. [2023-12-19 01:22:06,717 INFO L78 Accepts]: Start accepts. Automaton has 80933 states and 105902 transitions. Word has length 115 [2023-12-19 01:22:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:22:06,717 INFO L495 AbstractCegarLoop]: Abstraction has 80933 states and 105902 transitions. [2023-12-19 01:22:06,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.857142857142858) internal successors, (304), 27 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 80933 states and 105902 transitions. [2023-12-19 01:22:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 01:22:06,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:22:06,720 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] [2023-12-19 01:22:06,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 01:22:06,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:22:06,926 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:22:06,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:22:06,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1853514788, now seen corresponding path program 1 times [2023-12-19 01:22:06,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:22:06,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091833208] [2023-12-19 01:22:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:06,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:22:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:22:07,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:22:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091833208] [2023-12-19 01:22:07,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091833208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:22:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458487113] [2023-12-19 01:22:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:22:07,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:22:07,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:22:07,204 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:22:07,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 01:22:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:22:07,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 01:22:07,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:22:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:22:08,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:22:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:22:09,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458487113] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:22:09,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:22:09,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-19 01:22:09,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655614342] [2023-12-19 01:22:09,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:22:09,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 01:22:09,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:22:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 01:22:09,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-19 01:22:09,004 INFO L87 Difference]: Start difference. First operand 80933 states and 105902 transitions. Second operand has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:22:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:22:16,201 INFO L93 Difference]: Finished difference Result 223327 states and 288568 transitions. [2023-12-19 01:22:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 01:22:16,202 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.225806451612904) internal successors, (317), 31 states have internal predecessors, (317), 0 states have call successors, (0), 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 115 [2023-12-19 01:22:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:22:16,445 INFO L225 Difference]: With dead ends: 223327 [2023-12-19 01:22:16,445 INFO L226 Difference]: Without dead ends: 149483 [2023-12-19 01:22:16,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1213, Invalid=4793, Unknown=0, NotChecked=0, Total=6006 [2023-12-19 01:22:16,504 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 20079 mSDsluCounter, 8448 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20079 SdHoareTripleChecker+Valid, 10001 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:22:16,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20079 Valid, 10001 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:22:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149483 states.