/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/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:19:10,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:19:10,774 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:19:10,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:19:10,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:19:10,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:19:10,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:19:10,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:19:10,800 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:19:10,800 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:19:10,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:19:10,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:19:10,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:19:10,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:19:10,801 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:19:10,802 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:19:10,802 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:19:10,802 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:19:10,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:19:10,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:19:10,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:19:10,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:19:10,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:19:10,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:19:10,803 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:19:10,804 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:19:10,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:19:10,804 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:19:10,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:19:10,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:19:10,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:19:10,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:19:10,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:19:10,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:19:10,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:19:10,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:19:10,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:19:10,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:19:10,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:19:10,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:19:10,806 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:19:10,806 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:19:10,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:19:10,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:19:10,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:19:10,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:19:10,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:19:10,965 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:19:10,965 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:19:10,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2023-12-15 23:19:12,098 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:19:12,392 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:19:12,393 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2023-12-15 23:19:12,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db18f964b/8242c8c81b9142e88290c124370c864e/FLAGf0d837d38 [2023-12-15 23:19:12,433 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db18f964b/8242c8c81b9142e88290c124370c864e [2023-12-15 23:19:12,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:19:12,437 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:19:12,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:19:12,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:19:12,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:19:12,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:12,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c66ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12, skipping insertion in model container [2023-12-15 23:19:12,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:12,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:19:12,804 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c[65679,65692] [2023-12-15 23:19:12,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:19:12,822 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:19:12,895 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c[65679,65692] [2023-12-15 23:19:12,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:19:12,908 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:19:12,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12 WrapperNode [2023-12-15 23:19:12,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:19:12,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:19:12,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:19:12,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:19:12,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:12,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,009 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2112 [2023-12-15 23:19:13,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:19:13,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:19:13,012 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:19:13,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:19:13,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,071 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]. [2023-12-15 23:19:13,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,077 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,137 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:19:13,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:19:13,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:19:13,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:19:13,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (1/1) ... [2023-12-15 23:19:13,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:19:13,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:19:13,182 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) [2023-12-15 23:19:13,252 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 [2023-12-15 23:19:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:19:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:19:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:19:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:19:13,424 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:19:13,427 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:19:14,517 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:19:14,559 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:19:14,560 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 23:19:14,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:19:14 BoogieIcfgContainer [2023-12-15 23:19:14,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:19:14,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:19:14,562 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:19:14,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:19:14,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:19:12" (1/3) ... [2023-12-15 23:19:14,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebcf4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:19:14, skipping insertion in model container [2023-12-15 23:19:14,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:19:12" (2/3) ... [2023-12-15 23:19:14,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ebcf4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:19:14, skipping insertion in model container [2023-12-15 23:19:14,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:19:14" (3/3) ... [2023-12-15 23:19:14,566 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2023-12-15 23:19:14,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:19:14,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:19:14,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:19:14,625 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;@4590c27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:19:14,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:19:14,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 701 states, 699 states have (on average 1.871244635193133) internal successors, (1308), 700 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-15 23:19:14,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:14,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:14,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:14,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1908807139, now seen corresponding path program 1 times [2023-12-15 23:19:14,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031899745] [2023-12-15 23:19:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:15,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031899745] [2023-12-15 23:19:15,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031899745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:15,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:15,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:19:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923228025] [2023-12-15 23:19:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:15,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 23:19:15,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:15,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 23:19:15,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 23:19:15,149 INFO L87 Difference]: Start difference. First operand has 701 states, 699 states have (on average 1.871244635193133) internal successors, (1308), 700 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:15,210 INFO L93 Difference]: Finished difference Result 852 states and 1581 transitions. [2023-12-15 23:19:15,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 23:19:15,212 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-15 23:19:15,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:15,231 INFO L225 Difference]: With dead ends: 852 [2023-12-15 23:19:15,231 INFO L226 Difference]: Without dead ends: 699 [2023-12-15 23:19:15,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 23:19:15,237 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:15,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1300 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-12-15 23:19:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2023-12-15 23:19:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.8667621776504297) internal successors, (1303), 698 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1303 transitions. [2023-12-15 23:19:15,320 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1303 transitions. Word has length 150 [2023-12-15 23:19:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:15,322 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1303 transitions. [2023-12-15 23:19:15,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1303 transitions. [2023-12-15 23:19:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-15 23:19:15,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:15,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:15,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:19:15,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:15,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash 14420895, now seen corresponding path program 1 times [2023-12-15 23:19:15,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:15,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639541594] [2023-12-15 23:19:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:15,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:15,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:15,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639541594] [2023-12-15 23:19:15,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639541594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:15,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:15,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:19:15,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064779338] [2023-12-15 23:19:15,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:15,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:19:15,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:19:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:19:15,718 INFO L87 Difference]: Start difference. First operand 699 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:15,804 INFO L93 Difference]: Finished difference Result 852 states and 1575 transitions. [2023-12-15 23:19:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:19:15,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-12-15 23:19:15,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:15,811 INFO L225 Difference]: With dead ends: 852 [2023-12-15 23:19:15,811 INFO L226 Difference]: Without dead ends: 699 [2023-12-15 23:19:15,814 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 [2023-12-15 23:19:15,816 INFO L413 NwaCegarLoop]: 1300 mSDtfsCounter, 0 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:15,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3832 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:19:15,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-12-15 23:19:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2023-12-15 23:19:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.7736389684813754) internal successors, (1238), 698 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1238 transitions. [2023-12-15 23:19:15,838 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1238 transitions. Word has length 150 [2023-12-15 23:19:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:15,840 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1238 transitions. [2023-12-15 23:19:15,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1238 transitions. [2023-12-15 23:19:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-15 23:19:15,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:15,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:15,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:19:15,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:15,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:15,844 INFO L85 PathProgramCache]: Analyzing trace with hash 705995133, now seen corresponding path program 1 times [2023-12-15 23:19:15,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:15,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88285429] [2023-12-15 23:19:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:15,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:16,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:16,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88285429] [2023-12-15 23:19:16,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88285429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:16,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:16,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:16,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495202271] [2023-12-15 23:19:16,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:16,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:16,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:16,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:16,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:16,023 INFO L87 Difference]: Start difference. First operand 699 states and 1238 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:16,082 INFO L93 Difference]: Finished difference Result 985 states and 1750 transitions. [2023-12-15 23:19:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2023-12-15 23:19:16,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:16,086 INFO L225 Difference]: With dead ends: 985 [2023-12-15 23:19:16,086 INFO L226 Difference]: Without dead ends: 835 [2023-12-15 23:19:16,087 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 [2023-12-15 23:19:16,088 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 234 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:16,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2396 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-12-15 23:19:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 832. [2023-12-15 23:19:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 1.772563176895307) internal successors, (1473), 831 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1473 transitions. [2023-12-15 23:19:16,106 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1473 transitions. Word has length 214 [2023-12-15 23:19:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:16,110 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1473 transitions. [2023-12-15 23:19:16,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1473 transitions. [2023-12-15 23:19:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-15 23:19:16,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:16,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:16,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:19:16,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:16,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash 559205667, now seen corresponding path program 1 times [2023-12-15 23:19:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:16,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402651654] [2023-12-15 23:19:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:16,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:16,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402651654] [2023-12-15 23:19:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402651654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:16,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:16,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:16,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713981472] [2023-12-15 23:19:16,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:16,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:16,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:16,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:16,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:16,316 INFO L87 Difference]: Start difference. First operand 832 states and 1473 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:16,349 INFO L93 Difference]: Finished difference Result 1374 states and 2437 transitions. [2023-12-15 23:19:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:16,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2023-12-15 23:19:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:16,353 INFO L225 Difference]: With dead ends: 1374 [2023-12-15 23:19:16,353 INFO L226 Difference]: Without dead ends: 1091 [2023-12-15 23:19:16,356 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 [2023-12-15 23:19:16,362 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 234 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:16,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2409 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:16,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2023-12-15 23:19:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1087. [2023-12-15 23:19:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 1.7734806629834254) internal successors, (1926), 1086 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1926 transitions. [2023-12-15 23:19:16,384 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1926 transitions. Word has length 218 [2023-12-15 23:19:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:16,384 INFO L495 AbstractCegarLoop]: Abstraction has 1087 states and 1926 transitions. [2023-12-15 23:19:16,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1926 transitions. [2023-12-15 23:19:16,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-15 23:19:16,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:16,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:16,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:19:16,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:16,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:16,388 INFO L85 PathProgramCache]: Analyzing trace with hash -994955831, now seen corresponding path program 1 times [2023-12-15 23:19:16,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:16,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154846381] [2023-12-15 23:19:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:16,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:16,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:16,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154846381] [2023-12-15 23:19:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154846381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:16,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:16,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:16,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831220854] [2023-12-15 23:19:16,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:16,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:16,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:16,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:16,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:16,538 INFO L87 Difference]: Start difference. First operand 1087 states and 1926 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:16,577 INFO L93 Difference]: Finished difference Result 2115 states and 3752 transitions. [2023-12-15 23:19:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:16,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2023-12-15 23:19:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:16,584 INFO L225 Difference]: With dead ends: 2115 [2023-12-15 23:19:16,584 INFO L226 Difference]: Without dead ends: 1577 [2023-12-15 23:19:16,585 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 [2023-12-15 23:19:16,586 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 226 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:16,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2410 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2023-12-15 23:19:16,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1571. [2023-12-15 23:19:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 1.7719745222929937) internal successors, (2782), 1570 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2782 transitions. [2023-12-15 23:19:16,646 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2782 transitions. Word has length 222 [2023-12-15 23:19:16,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:16,647 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2782 transitions. [2023-12-15 23:19:16,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2782 transitions. [2023-12-15 23:19:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-15 23:19:16,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:16,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:16,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:19:16,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:16,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2029632657, now seen corresponding path program 1 times [2023-12-15 23:19:16,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701099105] [2023-12-15 23:19:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:16,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:16,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:16,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701099105] [2023-12-15 23:19:16,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701099105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:16,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:16,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:16,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336049961] [2023-12-15 23:19:16,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:16,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:16,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:16,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:16,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:16,819 INFO L87 Difference]: Start difference. First operand 1571 states and 2782 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:16,866 INFO L93 Difference]: Finished difference Result 3519 states and 6232 transitions. [2023-12-15 23:19:16,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:16,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2023-12-15 23:19:16,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:16,874 INFO L225 Difference]: With dead ends: 3519 [2023-12-15 23:19:16,875 INFO L226 Difference]: Without dead ends: 2497 [2023-12-15 23:19:16,877 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 [2023-12-15 23:19:16,878 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 218 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:16,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2411 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2023-12-15 23:19:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2487. [2023-12-15 23:19:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2486 states have (on average 1.7674979887369269) internal successors, (4394), 2486 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 4394 transitions. [2023-12-15 23:19:16,939 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 4394 transitions. Word has length 226 [2023-12-15 23:19:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:16,940 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 4394 transitions. [2023-12-15 23:19:16,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 4394 transitions. [2023-12-15 23:19:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-12-15 23:19:16,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:16,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:16,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:19:16,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:16,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1886031381, now seen corresponding path program 1 times [2023-12-15 23:19:16,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:16,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138612921] [2023-12-15 23:19:16,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:16,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:17,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:17,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138612921] [2023-12-15 23:19:17,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138612921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:17,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:17,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:17,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79369322] [2023-12-15 23:19:17,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:17,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:17,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:17,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:17,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:17,108 INFO L87 Difference]: Start difference. First operand 2487 states and 4394 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:17,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:17,164 INFO L93 Difference]: Finished difference Result 6171 states and 10892 transitions. [2023-12-15 23:19:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:17,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2023-12-15 23:19:17,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:17,178 INFO L225 Difference]: With dead ends: 6171 [2023-12-15 23:19:17,178 INFO L226 Difference]: Without dead ends: 4233 [2023-12-15 23:19:17,184 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 [2023-12-15 23:19:17,215 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 210 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:17,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2412 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2023-12-15 23:19:17,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 4215. [2023-12-15 23:19:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 4214 states have (on average 1.7603227337446608) internal successors, (7418), 4214 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 7418 transitions. [2023-12-15 23:19:17,308 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 7418 transitions. Word has length 230 [2023-12-15 23:19:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:17,308 INFO L495 AbstractCegarLoop]: Abstraction has 4215 states and 7418 transitions. [2023-12-15 23:19:17,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 7418 transitions. [2023-12-15 23:19:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-15 23:19:17,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:17,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:17,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:19:17,312 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:17,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2117635515, now seen corresponding path program 1 times [2023-12-15 23:19:17,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:17,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202053552] [2023-12-15 23:19:17,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:17,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:17,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:17,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202053552] [2023-12-15 23:19:17,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202053552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:17,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:17,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:19:17,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495951069] [2023-12-15 23:19:17,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:17,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:19:17,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:17,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:19:17,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:19:17,569 INFO L87 Difference]: Start difference. First operand 4215 states and 7418 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:18,072 INFO L93 Difference]: Finished difference Result 25227 states and 44660 transitions. [2023-12-15 23:19:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:19:18,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2023-12-15 23:19:18,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:18,147 INFO L225 Difference]: With dead ends: 25227 [2023-12-15 23:19:18,147 INFO L226 Difference]: Without dead ends: 21561 [2023-12-15 23:19:18,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-15 23:19:18,164 INFO L413 NwaCegarLoop]: 1241 mSDtfsCounter, 3272 mSDsluCounter, 9550 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3272 SdHoareTripleChecker+Valid, 10791 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:18,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3272 Valid, 10791 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:19:18,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21561 states. [2023-12-15 23:19:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21561 to 7738. [2023-12-15 23:19:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7738 states, 7737 states have (on average 1.758821248545948) internal successors, (13608), 7737 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 13608 transitions. [2023-12-15 23:19:18,453 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 13608 transitions. Word has length 234 [2023-12-15 23:19:18,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:18,454 INFO L495 AbstractCegarLoop]: Abstraction has 7738 states and 13608 transitions. [2023-12-15 23:19:18,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 13608 transitions. [2023-12-15 23:19:18,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-15 23:19:18,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:18,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:18,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:19:18,459 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:18,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1148420136, now seen corresponding path program 1 times [2023-12-15 23:19:18,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:18,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371894483] [2023-12-15 23:19:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:18,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:18,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:18,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371894483] [2023-12-15 23:19:18,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371894483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:18,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:18,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:19:18,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284138650] [2023-12-15 23:19:18,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:18,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:19:18,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:19:18,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:19:18,633 INFO L87 Difference]: Start difference. First operand 7738 states and 13608 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:18,785 INFO L93 Difference]: Finished difference Result 22547 states and 39801 transitions. [2023-12-15 23:19:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:19:18,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2023-12-15 23:19:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:18,816 INFO L225 Difference]: With dead ends: 22547 [2023-12-15 23:19:18,816 INFO L226 Difference]: Without dead ends: 15358 [2023-12-15 23:19:18,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:19:18,830 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 775 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:18,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3899 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15358 states. [2023-12-15 23:19:19,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15358 to 11515. [2023-12-15 23:19:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11515 states, 11514 states have (on average 1.7595970123328122) internal successors, (20260), 11514 states have internal predecessors, (20260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11515 states to 11515 states and 20260 transitions. [2023-12-15 23:19:19,128 INFO L78 Accepts]: Start accepts. Automaton has 11515 states and 20260 transitions. Word has length 235 [2023-12-15 23:19:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:19,128 INFO L495 AbstractCegarLoop]: Abstraction has 11515 states and 20260 transitions. [2023-12-15 23:19:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11515 states and 20260 transitions. [2023-12-15 23:19:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-15 23:19:19,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:19,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:19,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:19:19,134 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:19,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1172966212, now seen corresponding path program 1 times [2023-12-15 23:19:19,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:19,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380346291] [2023-12-15 23:19:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:19,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:19,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:19,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380346291] [2023-12-15 23:19:19,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380346291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:19,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:19,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:19:19,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076643230] [2023-12-15 23:19:19,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:19,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:19:19,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:19,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:19:19,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:19:19,295 INFO L87 Difference]: Start difference. First operand 11515 states and 20260 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:19,489 INFO L93 Difference]: Finished difference Result 33849 states and 59649 transitions. [2023-12-15 23:19:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:19:19,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2023-12-15 23:19:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:19,531 INFO L225 Difference]: With dead ends: 33849 [2023-12-15 23:19:19,531 INFO L226 Difference]: Without dead ends: 22883 [2023-12-15 23:19:19,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:19:19,552 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 775 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:19,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3887 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22883 states. [2023-12-15 23:19:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22883 to 17151. [2023-12-15 23:19:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17151 states, 17150 states have (on average 1.7565014577259475) internal successors, (30124), 17150 states have internal predecessors, (30124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17151 states to 17151 states and 30124 transitions. [2023-12-15 23:19:19,974 INFO L78 Accepts]: Start accepts. Automaton has 17151 states and 30124 transitions. Word has length 236 [2023-12-15 23:19:19,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:19,974 INFO L495 AbstractCegarLoop]: Abstraction has 17151 states and 30124 transitions. [2023-12-15 23:19:19,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 17151 states and 30124 transitions. [2023-12-15 23:19:19,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-15 23:19:19,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:19,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:19,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:19:19,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:19,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1939346321, now seen corresponding path program 1 times [2023-12-15 23:19:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:19,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55660214] [2023-12-15 23:19:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:19,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:20,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:20,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55660214] [2023-12-15 23:19:20,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55660214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:20,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:20,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:19:20,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314766846] [2023-12-15 23:19:20,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:20,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:19:20,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:20,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:19:20,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:19:20,212 INFO L87 Difference]: Start difference. First operand 17151 states and 30124 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:20,483 INFO L93 Difference]: Finished difference Result 50821 states and 89405 transitions. [2023-12-15 23:19:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:19:20,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2023-12-15 23:19:20,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:20,545 INFO L225 Difference]: With dead ends: 50821 [2023-12-15 23:19:20,545 INFO L226 Difference]: Without dead ends: 34219 [2023-12-15 23:19:20,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:19:20,576 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 773 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:20,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 3889 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34219 states. [2023-12-15 23:19:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34219 to 25615. [2023-12-15 23:19:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25615 states, 25614 states have (on average 1.7534941828687436) internal successors, (44914), 25614 states have internal predecessors, (44914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25615 states to 25615 states and 44914 transitions. [2023-12-15 23:19:21,223 INFO L78 Accepts]: Start accepts. Automaton has 25615 states and 44914 transitions. Word has length 237 [2023-12-15 23:19:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:21,224 INFO L495 AbstractCegarLoop]: Abstraction has 25615 states and 44914 transitions. [2023-12-15 23:19:21,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 25615 states and 44914 transitions. [2023-12-15 23:19:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-15 23:19:21,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:21,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:21,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:19:21,233 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:21,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:21,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1174486854, now seen corresponding path program 1 times [2023-12-15 23:19:21,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:21,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160139808] [2023-12-15 23:19:21,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:21,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:21,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160139808] [2023-12-15 23:19:21,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160139808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:21,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:21,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938410575] [2023-12-15 23:19:21,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:21,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:21,337 INFO L87 Difference]: Start difference. First operand 25615 states and 44914 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:21,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:21,751 INFO L93 Difference]: Finished difference Result 57522 states and 101104 transitions. [2023-12-15 23:19:21,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:21,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-15 23:19:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:21,835 INFO L225 Difference]: With dead ends: 57522 [2023-12-15 23:19:21,835 INFO L226 Difference]: Without dead ends: 39923 [2023-12-15 23:19:21,952 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 [2023-12-15 23:19:21,953 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 241 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2647 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 [2023-12-15 23:19:21,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2647 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39923 states. [2023-12-15 23:19:22,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39923 to 39921. [2023-12-15 23:19:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39921 states, 39920 states have (on average 1.7498997995991985) internal successors, (69856), 39920 states have internal predecessors, (69856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39921 states to 39921 states and 69856 transitions. [2023-12-15 23:19:22,697 INFO L78 Accepts]: Start accepts. Automaton has 39921 states and 69856 transitions. Word has length 238 [2023-12-15 23:19:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:22,698 INFO L495 AbstractCegarLoop]: Abstraction has 39921 states and 69856 transitions. [2023-12-15 23:19:22,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 39921 states and 69856 transitions. [2023-12-15 23:19:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-15 23:19:22,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:22,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:22,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:19:22,710 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:22,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1573217210, now seen corresponding path program 1 times [2023-12-15 23:19:22,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:22,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141468371] [2023-12-15 23:19:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:22,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:22,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:22,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141468371] [2023-12-15 23:19:22,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141468371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:22,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:22,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:22,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027204932] [2023-12-15 23:19:22,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:22,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:22,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:22,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:22,896 INFO L87 Difference]: Start difference. First operand 39921 states and 69856 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:23,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:23,483 INFO L93 Difference]: Finished difference Result 78623 states and 137545 transitions. [2023-12-15 23:19:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:23,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-15 23:19:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:23,600 INFO L225 Difference]: With dead ends: 78623 [2023-12-15 23:19:23,600 INFO L226 Difference]: Without dead ends: 57193 [2023-12-15 23:19:23,623 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 [2023-12-15 23:19:23,624 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 217 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2549 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 [2023-12-15 23:19:23,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:23,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57193 states. [2023-12-15 23:19:24,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57193 to 57191. [2023-12-15 23:19:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57191 states, 57190 states have (on average 1.7430494841755553) internal successors, (99685), 57190 states have internal predecessors, (99685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57191 states to 57191 states and 99685 transitions. [2023-12-15 23:19:24,807 INFO L78 Accepts]: Start accepts. Automaton has 57191 states and 99685 transitions. Word has length 238 [2023-12-15 23:19:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:24,807 INFO L495 AbstractCegarLoop]: Abstraction has 57191 states and 99685 transitions. [2023-12-15 23:19:24,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 57191 states and 99685 transitions. [2023-12-15 23:19:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-15 23:19:24,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:24,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:24,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:19:24,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:24,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1318339770, now seen corresponding path program 1 times [2023-12-15 23:19:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:24,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501582654] [2023-12-15 23:19:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:24,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:24,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:24,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501582654] [2023-12-15 23:19:24,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501582654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:24,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:24,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:24,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637052960] [2023-12-15 23:19:24,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:24,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:24,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:24,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:24,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:24,908 INFO L87 Difference]: Start difference. First operand 57191 states and 99685 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:25,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:25,607 INFO L93 Difference]: Finished difference Result 111989 states and 195215 transitions. [2023-12-15 23:19:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:25,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-15 23:19:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:25,737 INFO L225 Difference]: With dead ends: 111989 [2023-12-15 23:19:25,737 INFO L226 Difference]: Without dead ends: 81427 [2023-12-15 23:19:25,768 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 [2023-12-15 23:19:25,768 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 209 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2530 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 [2023-12-15 23:19:25,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 2530 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:25,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81427 states. [2023-12-15 23:19:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81427 to 81425. [2023-12-15 23:19:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81425 states, 81424 states have (on average 1.736158872077029) internal successors, (141365), 81424 states have internal predecessors, (141365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81425 states to 81425 states and 141365 transitions. [2023-12-15 23:19:27,401 INFO L78 Accepts]: Start accepts. Automaton has 81425 states and 141365 transitions. Word has length 238 [2023-12-15 23:19:27,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:27,401 INFO L495 AbstractCegarLoop]: Abstraction has 81425 states and 141365 transitions. [2023-12-15 23:19:27,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 81425 states and 141365 transitions. [2023-12-15 23:19:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-15 23:19:27,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:27,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:27,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:19:27,408 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:27,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:27,408 INFO L85 PathProgramCache]: Analyzing trace with hash -67222323, now seen corresponding path program 1 times [2023-12-15 23:19:27,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:27,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240144272] [2023-12-15 23:19:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:27,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:27,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:27,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240144272] [2023-12-15 23:19:27,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240144272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:27,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:27,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:19:27,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077177744] [2023-12-15 23:19:27,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:27,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:19:27,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:27,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:19:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:19:27,522 INFO L87 Difference]: Start difference. First operand 81425 states and 141365 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:29,257 INFO L93 Difference]: Finished difference Result 266655 states and 463318 transitions. [2023-12-15 23:19:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:19:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-15 23:19:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:29,668 INFO L225 Difference]: With dead ends: 266655 [2023-12-15 23:19:29,669 INFO L226 Difference]: Without dead ends: 186125 [2023-12-15 23:19:29,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:19:29,775 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 771 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:29,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 3891 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186125 states. [2023-12-15 23:19:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186125 to 133515. [2023-12-15 23:19:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133515 states, 133514 states have (on average 1.731151789325464) internal successors, (231133), 133514 states have internal predecessors, (231133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133515 states to 133515 states and 231133 transitions. [2023-12-15 23:19:32,646 INFO L78 Accepts]: Start accepts. Automaton has 133515 states and 231133 transitions. Word has length 238 [2023-12-15 23:19:32,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:32,647 INFO L495 AbstractCegarLoop]: Abstraction has 133515 states and 231133 transitions. [2023-12-15 23:19:32,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 133515 states and 231133 transitions. [2023-12-15 23:19:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-15 23:19:32,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:32,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:32,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:19:32,649 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:32,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash -177765702, now seen corresponding path program 1 times [2023-12-15 23:19:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416304767] [2023-12-15 23:19:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:32,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:32,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:32,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416304767] [2023-12-15 23:19:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416304767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:32,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:32,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009398811] [2023-12-15 23:19:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:32,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:32,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:32,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:32,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:32,741 INFO L87 Difference]: Start difference. First operand 133515 states and 231133 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:34,781 INFO L93 Difference]: Finished difference Result 298015 states and 515529 transitions. [2023-12-15 23:19:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:34,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-15 23:19:34,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:35,278 INFO L225 Difference]: With dead ends: 298015 [2023-12-15 23:19:35,278 INFO L226 Difference]: Without dead ends: 205195 [2023-12-15 23:19:35,375 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 [2023-12-15 23:19:35,375 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 225 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 2592 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 [2023-12-15 23:19:35,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 2592 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205195 states. [2023-12-15 23:19:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205195 to 205193. [2023-12-15 23:19:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205193 states, 205192 states have (on average 1.7210709969199578) internal successors, (353150), 205192 states have internal predecessors, (353150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205193 states to 205193 states and 353150 transitions. [2023-12-15 23:19:38,999 INFO L78 Accepts]: Start accepts. Automaton has 205193 states and 353150 transitions. Word has length 238 [2023-12-15 23:19:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:39,000 INFO L495 AbstractCegarLoop]: Abstraction has 205193 states and 353150 transitions. [2023-12-15 23:19:39,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 205193 states and 353150 transitions. [2023-12-15 23:19:39,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-15 23:19:39,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:39,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:39,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:19:39,002 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:39,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:39,002 INFO L85 PathProgramCache]: Analyzing trace with hash 343581114, now seen corresponding path program 1 times [2023-12-15 23:19:39,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:39,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466841399] [2023-12-15 23:19:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:39,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:39,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:39,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:39,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466841399] [2023-12-15 23:19:39,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466841399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:39,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:39,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:19:39,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749423381] [2023-12-15 23:19:39,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:39,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:19:39,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:19:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:19:39,094 INFO L87 Difference]: Start difference. First operand 205193 states and 353150 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:42,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:42,308 INFO L93 Difference]: Finished difference Result 456992 states and 785610 transitions. [2023-12-15 23:19:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:19:42,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2023-12-15 23:19:42,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:43,073 INFO L225 Difference]: With dead ends: 456992 [2023-12-15 23:19:43,073 INFO L226 Difference]: Without dead ends: 313684 [2023-12-15 23:19:43,217 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 [2023-12-15 23:19:43,217 INFO L413 NwaCegarLoop]: 1434 mSDtfsCounter, 233 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 2636 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 [2023-12-15 23:19:43,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 2636 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313684 states. [2023-12-15 23:19:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313684 to 313682. [2023-12-15 23:19:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313682 states, 313681 states have (on average 1.7089654776668015) internal successors, (536070), 313681 states have internal predecessors, (536070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313682 states to 313682 states and 536070 transitions. [2023-12-15 23:19:49,476 INFO L78 Accepts]: Start accepts. Automaton has 313682 states and 536070 transitions. Word has length 238 [2023-12-15 23:19:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:19:49,477 INFO L495 AbstractCegarLoop]: Abstraction has 313682 states and 536070 transitions. [2023-12-15 23:19:49,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 313682 states and 536070 transitions. [2023-12-15 23:19:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-15 23:19:49,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:19:49,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:19:49,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:19:49,478 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:19:49,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:19:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2135856390, now seen corresponding path program 1 times [2023-12-15 23:19:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:19:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767678471] [2023-12-15 23:19:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:19:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:19:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:19:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:19:49,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:19:49,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767678471] [2023-12-15 23:19:49,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767678471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:19:49,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:19:49,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:19:49,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808692788] [2023-12-15 23:19:49,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:19:49,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:19:49,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:19:49,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:19:49,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:19:49,590 INFO L87 Difference]: Start difference. First operand 313682 states and 536070 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:19:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:19:55,887 INFO L93 Difference]: Finished difference Result 1027769 states and 1757853 transitions. [2023-12-15 23:19:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:19:55,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2023-12-15 23:19:55,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:19:57,880 INFO L225 Difference]: With dead ends: 1027769 [2023-12-15 23:19:57,880 INFO L226 Difference]: Without dead ends: 714686 [2023-12-15 23:19:58,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:19:58,233 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 769 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:19:58,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 3893 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:19:59,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714686 states. Received shutdown request... [2023-12-15 23:20:07,233 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:20:08,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-15 23:20:08,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714686 to 513013. [2023-12-15 23:20:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513013 states, 513012 states have (on average 1.7028958386938318) internal successors, (873606), 513012 states have internal predecessors, (873606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:20:09,091 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:20:09,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:20:09,092 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-15 23:20:09,098 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:20:09,100 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:20:09,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:20:09 BoogieIcfgContainer [2023-12-15 23:20:09,104 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:20:09,104 INFO L158 Benchmark]: Toolchain (without parser) took 56667.59ms. Allocated memory was 195.0MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 154.6MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. [2023-12-15 23:20:09,105 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:20:09,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.76ms. Allocated memory is still 195.0MB. Free memory was 154.5MB in the beginning and 113.6MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-15 23:20:09,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.86ms. Allocated memory is still 195.0MB. Free memory was 113.1MB in the beginning and 104.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 23:20:09,106 INFO L158 Benchmark]: Boogie Preprocessor took 141.72ms. Allocated memory is still 195.0MB. Free memory was 104.1MB in the beginning and 92.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 23:20:09,106 INFO L158 Benchmark]: RCFGBuilder took 1406.47ms. Allocated memory was 195.0MB in the beginning and 254.8MB in the end (delta: 59.8MB). Free memory was 92.7MB in the beginning and 196.9MB in the end (delta: -104.2MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2023-12-15 23:20:09,106 INFO L158 Benchmark]: TraceAbstraction took 54542.40ms. Allocated memory was 254.8MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 196.4MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-12-15 23:20:09,112 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 470.76ms. Allocated memory is still 195.0MB. Free memory was 154.5MB in the beginning and 113.6MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 100.86ms. Allocated memory is still 195.0MB. Free memory was 113.1MB in the beginning and 104.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 141.72ms. Allocated memory is still 195.0MB. Free memory was 104.1MB in the beginning and 92.7MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1406.47ms. Allocated memory was 195.0MB in the beginning and 254.8MB in the end (delta: 59.8MB). Free memory was 92.7MB in the beginning and 196.9MB in the end (delta: -104.2MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. * TraceAbstraction took 54542.40ms. Allocated memory was 254.8MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 196.4MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 2953]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 2953). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 701 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.5s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9382 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9382 mSDsluCounter, 60374 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37304 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 744 IncrementalHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 23070 mSDtfsCounter, 744 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313682occurred in iteration=17, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 29.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 84663 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 4019 NumberOfCodeBlocks, 4019 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 4001 ConstructedInterpolants, 0 QuantifiedInterpolants, 8602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown !ENTRY org.eclipse.osgi 4 0 2023-12-15 23:20:09.153 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db18f964b/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438)