/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-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:47:02,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:47:02,467 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 03:47:02,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:47:02,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:47:02,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:47:02,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:47:02,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:47:02,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:47:02,511 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:47:02,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:47:02,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:47:02,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:47:02,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:47:02,514 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:47:02,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:47:02,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:47:02,514 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:47:02,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:47:02,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:47:02,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:47:02,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:47:02,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:47:02,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:47:02,517 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:47:02,517 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:47:02,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:47:02,518 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:47:02,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:47:02,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:47:02,519 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:47:02,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:47:02,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:47:02,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:47:02,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:47:02,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:47:02,520 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:47:02,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:47:02,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:47:02,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:47:02,521 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:47:02,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:47:02,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:47:02,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:47:02,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:47:02,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:47:02,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:47:02,769 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:47:02,770 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:47:02,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-20 03:47:03,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:47:04,197 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:47:04,198 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-20 03:47:04,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866eb1751/f6dc2de6ef304473b615c3d7fcf21bd0/FLAG50b1ce207 [2023-12-20 03:47:04,224 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866eb1751/f6dc2de6ef304473b615c3d7fcf21bd0 [2023-12-20 03:47:04,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:47:04,227 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:47:04,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:47:04,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:47:04,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:47:04,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:04,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1f1dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04, skipping insertion in model container [2023-12-20 03:47:04,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:04,294 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:47:04,552 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15966,15979] [2023-12-20 03:47:04,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:47:04,638 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:47:04,726 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15966,15979] [2023-12-20 03:47:04,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:47:04,796 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:47:04,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04 WrapperNode [2023-12-20 03:47:04,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:47:04,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:47:04,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:47:04,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:47:04,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:04,827 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:04,891 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1370 [2023-12-20 03:47:04,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:47:04,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:47:04,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:47:04,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:47:04,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:04,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:04,909 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:04,942 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]. [2023-12-20 03:47:04,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:04,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:04,981 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:05,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:05,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:05,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:05,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:47:05,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:47:05,073 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:47:05,073 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:47:05,074 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (1/1) ... [2023-12-20 03:47:05,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:47:05,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:47:05,171 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) [2023-12-20 03:47:05,184 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 [2023-12-20 03:47:05,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:47:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:47:05,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:47:05,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:47:05,341 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:47:05,343 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:47:06,247 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:47:06,305 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:47:06,305 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:47:06,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:47:06 BoogieIcfgContainer [2023-12-20 03:47:06,306 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:47:06,308 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:47:06,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:47:06,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:47:06,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:47:04" (1/3) ... [2023-12-20 03:47:06,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e76cd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:47:06, skipping insertion in model container [2023-12-20 03:47:06,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:47:04" (2/3) ... [2023-12-20 03:47:06,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e76cd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:47:06, skipping insertion in model container [2023-12-20 03:47:06,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:47:06" (3/3) ... [2023-12-20 03:47:06,313 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-20 03:47:06,329 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:47:06,329 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:47:06,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:47:06,377 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;@7cc4599d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:47:06,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:47:06,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 333 states have (on average 1.7777777777777777) internal successors, (592), 334 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 03:47:06,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:06,394 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] [2023-12-20 03:47:06,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:06,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1082782656, now seen corresponding path program 1 times [2023-12-20 03:47:06,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:06,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800745668] [2023-12-20 03:47:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:06,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:06,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:06,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800745668] [2023-12-20 03:47:06,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800745668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:06,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:06,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:06,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106318689] [2023-12-20 03:47:06,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:06,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:06,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:06,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:06,998 INFO L87 Difference]: Start difference. First operand has 335 states, 333 states have (on average 1.7777777777777777) internal successors, (592), 334 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:07,215 INFO L93 Difference]: Finished difference Result 660 states and 1152 transitions. [2023-12-20 03:47:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:07,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-12-20 03:47:07,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:07,233 INFO L225 Difference]: With dead ends: 660 [2023-12-20 03:47:07,233 INFO L226 Difference]: Without dead ends: 542 [2023-12-20 03:47:07,236 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 [2023-12-20 03:47:07,240 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 398 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:07,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 964 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:47:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-12-20 03:47:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2023-12-20 03:47:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.5009276437847867) internal successors, (809), 539 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 809 transitions. [2023-12-20 03:47:07,311 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 809 transitions. Word has length 152 [2023-12-20 03:47:07,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:07,312 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 809 transitions. [2023-12-20 03:47:07,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:07,312 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 809 transitions. [2023-12-20 03:47:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 03:47:07,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:07,315 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] [2023-12-20 03:47:07,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:47:07,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:07,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash 704960955, now seen corresponding path program 1 times [2023-12-20 03:47:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:07,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521018562] [2023-12-20 03:47:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:07,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:07,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:07,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521018562] [2023-12-20 03:47:07,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521018562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:07,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:07,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:07,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068391349] [2023-12-20 03:47:07,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:07,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:07,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:07,825 INFO L87 Difference]: Start difference. First operand 540 states and 809 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:07,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:07,901 INFO L93 Difference]: Finished difference Result 1575 states and 2350 transitions. [2023-12-20 03:47:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:07,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-12-20 03:47:07,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:07,907 INFO L225 Difference]: With dead ends: 1575 [2023-12-20 03:47:07,907 INFO L226 Difference]: Without dead ends: 1043 [2023-12-20 03:47:07,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:07,913 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 1068 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:07,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1206 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2023-12-20 03:47:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1041. [2023-12-20 03:47:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 1.4826923076923078) internal successors, (1542), 1040 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1542 transitions. [2023-12-20 03:47:07,959 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1542 transitions. Word has length 152 [2023-12-20 03:47:07,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:07,961 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1542 transitions. [2023-12-20 03:47:07,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:07,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1542 transitions. [2023-12-20 03:47:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-20 03:47:07,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:07,971 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] [2023-12-20 03:47:07,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:47:07,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:07,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:07,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2079044485, now seen corresponding path program 1 times [2023-12-20 03:47:07,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:07,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994728028] [2023-12-20 03:47:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:07,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:08,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:08,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994728028] [2023-12-20 03:47:08,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994728028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:08,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:08,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:08,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264113782] [2023-12-20 03:47:08,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:08,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:08,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:08,073 INFO L87 Difference]: Start difference. First operand 1041 states and 1542 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:08,129 INFO L93 Difference]: Finished difference Result 3087 states and 4566 transitions. [2023-12-20 03:47:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:08,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-12-20 03:47:08,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:08,139 INFO L225 Difference]: With dead ends: 3087 [2023-12-20 03:47:08,139 INFO L226 Difference]: Without dead ends: 2073 [2023-12-20 03:47:08,143 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 [2023-12-20 03:47:08,145 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 482 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:08,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1453 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-12-20 03:47:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1043. [2023-12-20 03:47:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.4817658349328215) internal successors, (1544), 1042 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1544 transitions. [2023-12-20 03:47:08,209 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1544 transitions. Word has length 153 [2023-12-20 03:47:08,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:08,212 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1544 transitions. [2023-12-20 03:47:08,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1544 transitions. [2023-12-20 03:47:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 03:47:08,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:08,225 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] [2023-12-20 03:47:08,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:47:08,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:08,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 204714344, now seen corresponding path program 1 times [2023-12-20 03:47:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093163431] [2023-12-20 03:47:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:08,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:08,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:08,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093163431] [2023-12-20 03:47:08,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093163431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:08,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:08,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:08,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509726567] [2023-12-20 03:47:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:08,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:08,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:08,350 INFO L87 Difference]: Start difference. First operand 1043 states and 1544 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:08,400 INFO L93 Difference]: Finished difference Result 2684 states and 3974 transitions. [2023-12-20 03:47:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:08,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2023-12-20 03:47:08,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:08,408 INFO L225 Difference]: With dead ends: 2684 [2023-12-20 03:47:08,409 INFO L226 Difference]: Without dead ends: 1835 [2023-12-20 03:47:08,410 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 [2023-12-20 03:47:08,416 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 417 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:08,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1378 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2023-12-20 03:47:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1833. [2023-12-20 03:47:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 1.460698689956332) internal successors, (2676), 1832 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2676 transitions. [2023-12-20 03:47:08,461 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2676 transitions. Word has length 154 [2023-12-20 03:47:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:08,463 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 2676 transitions. [2023-12-20 03:47:08,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2676 transitions. [2023-12-20 03:47:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 03:47:08,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:08,467 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] [2023-12-20 03:47:08,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:47:08,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:08,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1920381653, now seen corresponding path program 1 times [2023-12-20 03:47:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:08,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210814479] [2023-12-20 03:47:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:08,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:08,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210814479] [2023-12-20 03:47:08,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210814479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:08,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:08,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:08,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136038657] [2023-12-20 03:47:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:08,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:47:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:47:08,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:08,773 INFO L87 Difference]: Start difference. First operand 1833 states and 2676 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:08,879 INFO L93 Difference]: Finished difference Result 5179 states and 7551 transitions. [2023-12-20 03:47:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:08,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2023-12-20 03:47:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:08,891 INFO L225 Difference]: With dead ends: 5179 [2023-12-20 03:47:08,891 INFO L226 Difference]: Without dead ends: 3359 [2023-12-20 03:47:08,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:08,897 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 1102 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:08,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 1645 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2023-12-20 03:47:08,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 3357. [2023-12-20 03:47:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 3356 states have (on average 1.4448748510131109) internal successors, (4849), 3356 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 4849 transitions. [2023-12-20 03:47:08,989 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 4849 transitions. Word has length 154 [2023-12-20 03:47:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:08,990 INFO L495 AbstractCegarLoop]: Abstraction has 3357 states and 4849 transitions. [2023-12-20 03:47:08,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 4849 transitions. [2023-12-20 03:47:08,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 03:47:08,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:08,996 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] [2023-12-20 03:47:08,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:47:08,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:08,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash 221481114, now seen corresponding path program 1 times [2023-12-20 03:47:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:08,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264535700] [2023-12-20 03:47:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:09,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:09,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264535700] [2023-12-20 03:47:09,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264535700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:09,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:09,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:09,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214754384] [2023-12-20 03:47:09,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:09,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:09,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:09,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:09,288 INFO L87 Difference]: Start difference. First operand 3357 states and 4849 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:09,390 INFO L93 Difference]: Finished difference Result 9770 states and 14052 transitions. [2023-12-20 03:47:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:09,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2023-12-20 03:47:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:09,411 INFO L225 Difference]: With dead ends: 9770 [2023-12-20 03:47:09,412 INFO L226 Difference]: Without dead ends: 6468 [2023-12-20 03:47:09,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:09,419 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 973 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:09,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1264 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2023-12-20 03:47:09,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 6466. [2023-12-20 03:47:09,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6466 states, 6465 states have (on average 1.4245939675174013) internal successors, (9210), 6465 states have internal predecessors, (9210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6466 states to 6466 states and 9210 transitions. [2023-12-20 03:47:09,570 INFO L78 Accepts]: Start accepts. Automaton has 6466 states and 9210 transitions. Word has length 154 [2023-12-20 03:47:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:09,571 INFO L495 AbstractCegarLoop]: Abstraction has 6466 states and 9210 transitions. [2023-12-20 03:47:09,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6466 states and 9210 transitions. [2023-12-20 03:47:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-20 03:47:09,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:09,622 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] [2023-12-20 03:47:09,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:47:09,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:09,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2036415750, now seen corresponding path program 1 times [2023-12-20 03:47:09,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:09,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496982353] [2023-12-20 03:47:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:09,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:09,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:09,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496982353] [2023-12-20 03:47:09,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496982353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:09,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:09,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:09,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113275981] [2023-12-20 03:47:09,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:09,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:09,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:09,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:09,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:09,684 INFO L87 Difference]: Start difference. First operand 6466 states and 9210 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:09,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:09,763 INFO L93 Difference]: Finished difference Result 19248 states and 27399 transitions. [2023-12-20 03:47:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:09,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2023-12-20 03:47:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:09,821 INFO L225 Difference]: With dead ends: 19248 [2023-12-20 03:47:09,822 INFO L226 Difference]: Without dead ends: 12872 [2023-12-20 03:47:09,835 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 [2023-12-20 03:47:09,836 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 468 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:09,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1105 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:09,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12872 states. [2023-12-20 03:47:10,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12872 to 6476. [2023-12-20 03:47:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6476 states, 6475 states have (on average 1.423938223938224) internal successors, (9220), 6475 states have internal predecessors, (9220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6476 states to 6476 states and 9220 transitions. [2023-12-20 03:47:10,115 INFO L78 Accepts]: Start accepts. Automaton has 6476 states and 9220 transitions. Word has length 155 [2023-12-20 03:47:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:10,115 INFO L495 AbstractCegarLoop]: Abstraction has 6476 states and 9220 transitions. [2023-12-20 03:47:10,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 6476 states and 9220 transitions. [2023-12-20 03:47:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-20 03:47:10,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:10,125 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] [2023-12-20 03:47:10,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:47:10,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:10,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:10,126 INFO L85 PathProgramCache]: Analyzing trace with hash 443568889, now seen corresponding path program 1 times [2023-12-20 03:47:10,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:10,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813785247] [2023-12-20 03:47:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:10,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:10,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:10,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813785247] [2023-12-20 03:47:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813785247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:10,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:10,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:10,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485176202] [2023-12-20 03:47:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:10,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:10,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:10,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:10,451 INFO L87 Difference]: Start difference. First operand 6476 states and 9220 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:10,582 INFO L93 Difference]: Finished difference Result 18754 states and 26615 transitions. [2023-12-20 03:47:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:10,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-12-20 03:47:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:10,606 INFO L225 Difference]: With dead ends: 18754 [2023-12-20 03:47:10,607 INFO L226 Difference]: Without dead ends: 12378 [2023-12-20 03:47:10,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:10,620 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1001 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:10,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1221 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12378 states. [2023-12-20 03:47:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12378 to 12376. [2023-12-20 03:47:10,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12376 states, 12375 states have (on average 1.4046060606060606) internal successors, (17382), 12375 states have internal predecessors, (17382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12376 states to 12376 states and 17382 transitions. [2023-12-20 03:47:10,929 INFO L78 Accepts]: Start accepts. Automaton has 12376 states and 17382 transitions. Word has length 156 [2023-12-20 03:47:10,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:10,929 INFO L495 AbstractCegarLoop]: Abstraction has 12376 states and 17382 transitions. [2023-12-20 03:47:10,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 12376 states and 17382 transitions. [2023-12-20 03:47:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-20 03:47:10,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:10,948 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] [2023-12-20 03:47:10,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:47:10,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:10,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1612399367, now seen corresponding path program 1 times [2023-12-20 03:47:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:10,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390096729] [2023-12-20 03:47:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:11,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390096729] [2023-12-20 03:47:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390096729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:11,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:11,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:11,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711570424] [2023-12-20 03:47:11,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:11,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:11,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:11,080 INFO L87 Difference]: Start difference. First operand 12376 states and 17382 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:11,204 INFO L93 Difference]: Finished difference Result 35904 states and 50586 transitions. [2023-12-20 03:47:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2023-12-20 03:47:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:11,253 INFO L225 Difference]: With dead ends: 35904 [2023-12-20 03:47:11,253 INFO L226 Difference]: Without dead ends: 24470 [2023-12-20 03:47:11,275 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 [2023-12-20 03:47:11,277 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 454 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:11,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1189 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24470 states. [2023-12-20 03:47:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24470 to 12396. [2023-12-20 03:47:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12396 states, 12395 states have (on average 1.4039532069382816) internal successors, (17402), 12395 states have internal predecessors, (17402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12396 states to 12396 states and 17402 transitions. [2023-12-20 03:47:11,705 INFO L78 Accepts]: Start accepts. Automaton has 12396 states and 17402 transitions. Word has length 157 [2023-12-20 03:47:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:11,706 INFO L495 AbstractCegarLoop]: Abstraction has 12396 states and 17402 transitions. [2023-12-20 03:47:11,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 12396 states and 17402 transitions. [2023-12-20 03:47:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-20 03:47:11,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:11,724 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] [2023-12-20 03:47:11,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:47:11,724 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:11,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash -23594792, now seen corresponding path program 1 times [2023-12-20 03:47:11,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:11,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900532075] [2023-12-20 03:47:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:12,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900532075] [2023-12-20 03:47:12,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900532075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:12,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:12,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:12,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111506547] [2023-12-20 03:47:12,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:12,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:12,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:12,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:12,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:12,068 INFO L87 Difference]: Start difference. First operand 12396 states and 17402 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:12,158 INFO L93 Difference]: Finished difference Result 20717 states and 29193 transitions. [2023-12-20 03:47:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:12,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2023-12-20 03:47:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:12,174 INFO L225 Difference]: With dead ends: 20717 [2023-12-20 03:47:12,175 INFO L226 Difference]: Without dead ends: 8889 [2023-12-20 03:47:12,189 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 [2023-12-20 03:47:12,190 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 65 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:12,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1507 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2023-12-20 03:47:12,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 8889. [2023-12-20 03:47:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8889 states, 8888 states have (on average 1.4063906390639065) internal successors, (12500), 8888 states have internal predecessors, (12500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8889 states to 8889 states and 12500 transitions. [2023-12-20 03:47:12,328 INFO L78 Accepts]: Start accepts. Automaton has 8889 states and 12500 transitions. Word has length 158 [2023-12-20 03:47:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:12,331 INFO L495 AbstractCegarLoop]: Abstraction has 8889 states and 12500 transitions. [2023-12-20 03:47:12,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8889 states and 12500 transitions. [2023-12-20 03:47:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 03:47:12,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:12,344 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] [2023-12-20 03:47:12,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:47:12,344 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:12,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2115835798, now seen corresponding path program 1 times [2023-12-20 03:47:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:12,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090113412] [2023-12-20 03:47:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:12,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:12,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:12,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090113412] [2023-12-20 03:47:12,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090113412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:12,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:12,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:12,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216261635] [2023-12-20 03:47:12,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:12,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:12,423 INFO L87 Difference]: Start difference. First operand 8889 states and 12500 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:12,519 INFO L93 Difference]: Finished difference Result 21425 states and 30718 transitions. [2023-12-20 03:47:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-12-20 03:47:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:12,544 INFO L225 Difference]: With dead ends: 21425 [2023-12-20 03:47:12,544 INFO L226 Difference]: Without dead ends: 13275 [2023-12-20 03:47:12,556 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 [2023-12-20 03:47:12,557 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 307 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:12,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1042 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13275 states. [2023-12-20 03:47:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13275 to 11473. [2023-12-20 03:47:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11473 states, 11472 states have (on average 1.4476987447698744) internal successors, (16608), 11472 states have internal predecessors, (16608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11473 states to 11473 states and 16608 transitions. [2023-12-20 03:47:12,786 INFO L78 Accepts]: Start accepts. Automaton has 11473 states and 16608 transitions. Word has length 162 [2023-12-20 03:47:12,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:12,786 INFO L495 AbstractCegarLoop]: Abstraction has 11473 states and 16608 transitions. [2023-12-20 03:47:12,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 11473 states and 16608 transitions. [2023-12-20 03:47:12,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-20 03:47:12,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:12,798 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] [2023-12-20 03:47:12,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:47:12,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:12,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:12,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2040890679, now seen corresponding path program 1 times [2023-12-20 03:47:12,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:12,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185509661] [2023-12-20 03:47:12,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:12,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:12,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:12,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185509661] [2023-12-20 03:47:12,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185509661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:12,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:12,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:12,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121797485] [2023-12-20 03:47:12,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:12,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:12,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:12,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:12,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:12,887 INFO L87 Difference]: Start difference. First operand 11473 states and 16608 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:13,079 INFO L93 Difference]: Finished difference Result 31843 states and 46302 transitions. [2023-12-20 03:47:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:13,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2023-12-20 03:47:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:13,124 INFO L225 Difference]: With dead ends: 31843 [2023-12-20 03:47:13,124 INFO L226 Difference]: Without dead ends: 21589 [2023-12-20 03:47:13,137 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 [2023-12-20 03:47:13,138 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 406 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:13,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1344 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:13,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21589 states. [2023-12-20 03:47:13,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21589 to 21587. [2023-12-20 03:47:13,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21587 states, 21586 states have (on average 1.4318539794311127) internal successors, (30908), 21586 states have internal predecessors, (30908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21587 states to 21587 states and 30908 transitions. [2023-12-20 03:47:13,569 INFO L78 Accepts]: Start accepts. Automaton has 21587 states and 30908 transitions. Word has length 165 [2023-12-20 03:47:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:13,569 INFO L495 AbstractCegarLoop]: Abstraction has 21587 states and 30908 transitions. [2023-12-20 03:47:13,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 21587 states and 30908 transitions. [2023-12-20 03:47:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-20 03:47:13,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:13,591 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] [2023-12-20 03:47:13,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:47:13,592 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:13,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1075079782, now seen corresponding path program 1 times [2023-12-20 03:47:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:13,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428619454] [2023-12-20 03:47:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:13,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:13,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428619454] [2023-12-20 03:47:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428619454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:13,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:13,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:47:13,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53061792] [2023-12-20 03:47:13,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:13,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:47:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:13,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:47:13,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:47:13,839 INFO L87 Difference]: Start difference. First operand 21587 states and 30908 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:14,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:14,747 INFO L93 Difference]: Finished difference Result 73252 states and 108501 transitions. [2023-12-20 03:47:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 03:47:14,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2023-12-20 03:47:14,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:14,869 INFO L225 Difference]: With dead ends: 73252 [2023-12-20 03:47:14,870 INFO L226 Difference]: Without dead ends: 55177 [2023-12-20 03:47:14,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:47:14,884 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 5832 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5832 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:14,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5832 Valid, 1353 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:47:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55177 states. [2023-12-20 03:47:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55177 to 30235. [2023-12-20 03:47:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30235 states, 30234 states have (on average 1.4180062181649797) internal successors, (42872), 30234 states have internal predecessors, (42872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:15,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30235 states to 30235 states and 42872 transitions. [2023-12-20 03:47:15,652 INFO L78 Accepts]: Start accepts. Automaton has 30235 states and 42872 transitions. Word has length 165 [2023-12-20 03:47:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:15,652 INFO L495 AbstractCegarLoop]: Abstraction has 30235 states and 42872 transitions. [2023-12-20 03:47:15,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 30235 states and 42872 transitions. [2023-12-20 03:47:15,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-20 03:47:15,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:15,678 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] [2023-12-20 03:47:15,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:47:15,678 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:15,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1923534673, now seen corresponding path program 1 times [2023-12-20 03:47:15,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:15,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765231354] [2023-12-20 03:47:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:15,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:15,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:15,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765231354] [2023-12-20 03:47:15,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765231354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:15,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:15,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:15,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242462639] [2023-12-20 03:47:15,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:15,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:15,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:15,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:15,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:15,931 INFO L87 Difference]: Start difference. First operand 30235 states and 42872 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:16,239 INFO L93 Difference]: Finished difference Result 49440 states and 70159 transitions. [2023-12-20 03:47:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:16,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2023-12-20 03:47:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:16,285 INFO L225 Difference]: With dead ends: 49440 [2023-12-20 03:47:16,285 INFO L226 Difference]: Without dead ends: 24292 [2023-12-20 03:47:16,314 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 [2023-12-20 03:47:16,314 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 53 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:16,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1471 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24292 states. [2023-12-20 03:47:16,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24292 to 24292. [2023-12-20 03:47:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24292 states, 24291 states have (on average 1.4134041414515663) internal successors, (34333), 24291 states have internal predecessors, (34333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24292 states to 24292 states and 34333 transitions. [2023-12-20 03:47:16,841 INFO L78 Accepts]: Start accepts. Automaton has 24292 states and 34333 transitions. Word has length 165 [2023-12-20 03:47:16,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:16,841 INFO L495 AbstractCegarLoop]: Abstraction has 24292 states and 34333 transitions. [2023-12-20 03:47:16,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand 24292 states and 34333 transitions. [2023-12-20 03:47:16,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-20 03:47:16,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:16,855 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] [2023-12-20 03:47:16,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:47:16,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:16,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:16,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1037119766, now seen corresponding path program 1 times [2023-12-20 03:47:16,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:16,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004799609] [2023-12-20 03:47:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:16,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:16,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004799609] [2023-12-20 03:47:16,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004799609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:16,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:16,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:16,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408972111] [2023-12-20 03:47:16,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:16,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:16,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:16,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:16,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:16,939 INFO L87 Difference]: Start difference. First operand 24292 states and 34333 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:17,150 INFO L93 Difference]: Finished difference Result 56618 states and 81031 transitions. [2023-12-20 03:47:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:17,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2023-12-20 03:47:17,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:17,207 INFO L225 Difference]: With dead ends: 56618 [2023-12-20 03:47:17,207 INFO L226 Difference]: Without dead ends: 37348 [2023-12-20 03:47:17,236 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 [2023-12-20 03:47:17,236 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 291 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:17,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1013 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37348 states. [2023-12-20 03:47:17,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37348 to 33178. [2023-12-20 03:47:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33178 states, 33177 states have (on average 1.4521204448865177) internal successors, (48177), 33177 states have internal predecessors, (48177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33178 states to 33178 states and 48177 transitions. [2023-12-20 03:47:18,040 INFO L78 Accepts]: Start accepts. Automaton has 33178 states and 48177 transitions. Word has length 169 [2023-12-20 03:47:18,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:18,040 INFO L495 AbstractCegarLoop]: Abstraction has 33178 states and 48177 transitions. [2023-12-20 03:47:18,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:18,041 INFO L276 IsEmpty]: Start isEmpty. Operand 33178 states and 48177 transitions. [2023-12-20 03:47:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-20 03:47:18,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:18,054 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] [2023-12-20 03:47:18,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:47:18,055 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:18,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1149778394, now seen corresponding path program 1 times [2023-12-20 03:47:18,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:18,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690050706] [2023-12-20 03:47:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:18,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:18,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690050706] [2023-12-20 03:47:18,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690050706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:18,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:18,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:18,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367140729] [2023-12-20 03:47:18,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:18,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:18,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:18,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:18,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:18,134 INFO L87 Difference]: Start difference. First operand 33178 states and 48177 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:18,522 INFO L93 Difference]: Finished difference Result 77195 states and 113126 transitions. [2023-12-20 03:47:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:18,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2023-12-20 03:47:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:18,619 INFO L225 Difference]: With dead ends: 77195 [2023-12-20 03:47:18,620 INFO L226 Difference]: Without dead ends: 51478 [2023-12-20 03:47:18,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:18,656 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 288 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:18,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 986 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51478 states. [2023-12-20 03:47:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51478 to 47668. [2023-12-20 03:47:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47668 states, 47667 states have (on average 1.4751295445486394) internal successors, (70315), 47667 states have internal predecessors, (70315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47668 states to 47668 states and 70315 transitions. [2023-12-20 03:47:19,516 INFO L78 Accepts]: Start accepts. Automaton has 47668 states and 70315 transitions. Word has length 169 [2023-12-20 03:47:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:19,516 INFO L495 AbstractCegarLoop]: Abstraction has 47668 states and 70315 transitions. [2023-12-20 03:47:19,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 47668 states and 70315 transitions. [2023-12-20 03:47:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-20 03:47:19,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:19,526 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] [2023-12-20 03:47:19,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:47:19,527 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:19,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2067455118, now seen corresponding path program 1 times [2023-12-20 03:47:19,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:19,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156873023] [2023-12-20 03:47:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:19,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:19,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156873023] [2023-12-20 03:47:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156873023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:19,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:19,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:19,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583646743] [2023-12-20 03:47:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:19,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:19,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:19,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:19,799 INFO L87 Difference]: Start difference. First operand 47668 states and 70315 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:20,182 INFO L93 Difference]: Finished difference Result 85821 states and 126478 transitions. [2023-12-20 03:47:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:20,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2023-12-20 03:47:20,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:20,243 INFO L225 Difference]: With dead ends: 85821 [2023-12-20 03:47:20,243 INFO L226 Difference]: Without dead ends: 38210 [2023-12-20 03:47:20,279 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 [2023-12-20 03:47:20,280 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 45 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:20,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1446 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:20,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38210 states. [2023-12-20 03:47:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38210 to 38210. [2023-12-20 03:47:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38210 states, 38209 states have (on average 1.4717736658902354) internal successors, (56235), 38209 states have internal predecessors, (56235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38210 states to 38210 states and 56235 transitions. [2023-12-20 03:47:21,012 INFO L78 Accepts]: Start accepts. Automaton has 38210 states and 56235 transitions. Word has length 170 [2023-12-20 03:47:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:21,013 INFO L495 AbstractCegarLoop]: Abstraction has 38210 states and 56235 transitions. [2023-12-20 03:47:21,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:21,013 INFO L276 IsEmpty]: Start isEmpty. Operand 38210 states and 56235 transitions. [2023-12-20 03:47:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:47:21,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:21,022 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] [2023-12-20 03:47:21,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:47:21,022 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:21,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:21,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1521577859, now seen corresponding path program 1 times [2023-12-20 03:47:21,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:21,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186996618] [2023-12-20 03:47:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:21,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:21,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186996618] [2023-12-20 03:47:21,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186996618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:21,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:21,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:21,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028473704] [2023-12-20 03:47:21,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:21,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:47:21,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:21,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:47:21,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:21,192 INFO L87 Difference]: Start difference. First operand 38210 states and 56235 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:21,501 INFO L93 Difference]: Finished difference Result 72046 states and 106378 transitions. [2023-12-20 03:47:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:47:21,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2023-12-20 03:47:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:21,566 INFO L225 Difference]: With dead ends: 72046 [2023-12-20 03:47:21,567 INFO L226 Difference]: Without dead ends: 38210 [2023-12-20 03:47:21,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:47:21,601 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1232 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:21,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 455 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:47:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38210 states. [2023-12-20 03:47:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38210 to 38210. [2023-12-20 03:47:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38210 states, 38209 states have (on average 1.4602842262294224) internal successors, (55796), 38209 states have internal predecessors, (55796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38210 states to 38210 states and 55796 transitions. [2023-12-20 03:47:22,346 INFO L78 Accepts]: Start accepts. Automaton has 38210 states and 55796 transitions. Word has length 175 [2023-12-20 03:47:22,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:22,346 INFO L495 AbstractCegarLoop]: Abstraction has 38210 states and 55796 transitions. [2023-12-20 03:47:22,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:22,346 INFO L276 IsEmpty]: Start isEmpty. Operand 38210 states and 55796 transitions. [2023-12-20 03:47:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 03:47:22,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:22,356 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] [2023-12-20 03:47:22,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:47:22,356 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:22,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:22,357 INFO L85 PathProgramCache]: Analyzing trace with hash -72475614, now seen corresponding path program 1 times [2023-12-20 03:47:22,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:22,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504853126] [2023-12-20 03:47:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:22,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:22,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504853126] [2023-12-20 03:47:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504853126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:22,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:22,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:22,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325790200] [2023-12-20 03:47:22,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:22,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:47:22,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:47:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:22,628 INFO L87 Difference]: Start difference. First operand 38210 states and 55796 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:22,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:22,995 INFO L93 Difference]: Finished difference Result 73388 states and 107180 transitions. [2023-12-20 03:47:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:22,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2023-12-20 03:47:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:23,064 INFO L225 Difference]: With dead ends: 73388 [2023-12-20 03:47:23,064 INFO L226 Difference]: Without dead ends: 35425 [2023-12-20 03:47:23,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:23,096 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1287 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:23,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 1283 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35425 states. [2023-12-20 03:47:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35425 to 35383. [2023-12-20 03:47:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35383 states, 35382 states have (on average 1.458792606410039) internal successors, (51615), 35382 states have internal predecessors, (51615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35383 states to 35383 states and 51615 transitions. [2023-12-20 03:47:23,601 INFO L78 Accepts]: Start accepts. Automaton has 35383 states and 51615 transitions. Word has length 175 [2023-12-20 03:47:23,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:23,601 INFO L495 AbstractCegarLoop]: Abstraction has 35383 states and 51615 transitions. [2023-12-20 03:47:23,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:23,601 INFO L276 IsEmpty]: Start isEmpty. Operand 35383 states and 51615 transitions. [2023-12-20 03:47:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-20 03:47:23,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:23,610 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] [2023-12-20 03:47:23,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:47:23,610 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:23,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1791017267, now seen corresponding path program 1 times [2023-12-20 03:47:23,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:23,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930209277] [2023-12-20 03:47:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:23,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930209277] [2023-12-20 03:47:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930209277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:23,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:23,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:23,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927611542] [2023-12-20 03:47:23,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:23,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:23,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:23,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:23,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:23,850 INFO L87 Difference]: Start difference. First operand 35383 states and 51615 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:24,203 INFO L93 Difference]: Finished difference Result 70913 states and 103383 transitions. [2023-12-20 03:47:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2023-12-20 03:47:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:24,258 INFO L225 Difference]: With dead ends: 70913 [2023-12-20 03:47:24,258 INFO L226 Difference]: Without dead ends: 35791 [2023-12-20 03:47:24,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:24,289 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 912 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:24,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1181 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35791 states. [2023-12-20 03:47:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35791 to 35634. [2023-12-20 03:47:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35634 states, 35633 states have (on average 1.4556450481295429) internal successors, (51869), 35633 states have internal predecessors, (51869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35634 states to 35634 states and 51869 transitions. [2023-12-20 03:47:24,823 INFO L78 Accepts]: Start accepts. Automaton has 35634 states and 51869 transitions. Word has length 177 [2023-12-20 03:47:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:24,823 INFO L495 AbstractCegarLoop]: Abstraction has 35634 states and 51869 transitions. [2023-12-20 03:47:24,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:24,823 INFO L276 IsEmpty]: Start isEmpty. Operand 35634 states and 51869 transitions. [2023-12-20 03:47:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-20 03:47:24,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:24,831 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] [2023-12-20 03:47:24,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:47:24,831 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:24,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:24,832 INFO L85 PathProgramCache]: Analyzing trace with hash -578995273, now seen corresponding path program 1 times [2023-12-20 03:47:24,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:24,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89213517] [2023-12-20 03:47:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:24,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89213517] [2023-12-20 03:47:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89213517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:25,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:25,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:25,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217267123] [2023-12-20 03:47:25,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:25,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:25,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:25,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:25,060 INFO L87 Difference]: Start difference. First operand 35634 states and 51869 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:25,413 INFO L93 Difference]: Finished difference Result 53443 states and 77842 transitions. [2023-12-20 03:47:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:25,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2023-12-20 03:47:25,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:25,461 INFO L225 Difference]: With dead ends: 53443 [2023-12-20 03:47:25,462 INFO L226 Difference]: Without dead ends: 32114 [2023-12-20 03:47:25,487 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 [2023-12-20 03:47:25,489 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 21 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:25,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1398 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32114 states. [2023-12-20 03:47:25,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32114 to 32114. [2023-12-20 03:47:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32114 states, 32113 states have (on average 1.4566997789057392) internal successors, (46779), 32113 states have internal predecessors, (46779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32114 states to 32114 states and 46779 transitions. [2023-12-20 03:47:25,965 INFO L78 Accepts]: Start accepts. Automaton has 32114 states and 46779 transitions. Word has length 177 [2023-12-20 03:47:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:25,965 INFO L495 AbstractCegarLoop]: Abstraction has 32114 states and 46779 transitions. [2023-12-20 03:47:25,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 32114 states and 46779 transitions. [2023-12-20 03:47:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 03:47:25,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:25,972 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] [2023-12-20 03:47:25,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:47:25,976 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:25,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1559619296, now seen corresponding path program 1 times [2023-12-20 03:47:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:25,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384849458] [2023-12-20 03:47:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:25,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:28,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:28,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384849458] [2023-12-20 03:47:28,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384849458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:28,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:28,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-20 03:47:28,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341151722] [2023-12-20 03:47:28,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:28,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:47:28,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:28,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:47:28,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:47:28,497 INFO L87 Difference]: Start difference. First operand 32114 states and 46779 transitions. Second operand has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:32,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:32,948 INFO L93 Difference]: Finished difference Result 104652 states and 153675 transitions. [2023-12-20 03:47:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 03:47:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-20 03:47:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:33,060 INFO L225 Difference]: With dead ends: 104652 [2023-12-20 03:47:33,060 INFO L226 Difference]: Without dead ends: 90070 [2023-12-20 03:47:33,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 03:47:33,097 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 2506 mSDsluCounter, 8907 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2506 SdHoareTripleChecker+Valid, 9638 SdHoareTripleChecker+Invalid, 3343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:33,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2506 Valid, 9638 Invalid, 3343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3331 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 03:47:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90070 states. [2023-12-20 03:47:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90070 to 32700. [2023-12-20 03:47:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32700 states, 32699 states have (on average 1.4518486803877795) internal successors, (47474), 32699 states have internal predecessors, (47474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32700 states to 32700 states and 47474 transitions. [2023-12-20 03:47:33,741 INFO L78 Accepts]: Start accepts. Automaton has 32700 states and 47474 transitions. Word has length 179 [2023-12-20 03:47:33,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:33,741 INFO L495 AbstractCegarLoop]: Abstraction has 32700 states and 47474 transitions. [2023-12-20 03:47:33,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 32700 states and 47474 transitions. [2023-12-20 03:47:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 03:47:33,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:33,748 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] [2023-12-20 03:47:33,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:47:33,749 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:33,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash 975050591, now seen corresponding path program 1 times [2023-12-20 03:47:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:33,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321717602] [2023-12-20 03:47:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:33,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:34,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:34,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321717602] [2023-12-20 03:47:34,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321717602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:34,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:34,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818077089] [2023-12-20 03:47:34,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:34,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:34,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:34,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:34,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:34,254 INFO L87 Difference]: Start difference. First operand 32700 states and 47474 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:34,522 INFO L93 Difference]: Finished difference Result 88274 states and 130724 transitions. [2023-12-20 03:47:34,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:34,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-20 03:47:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:34,639 INFO L225 Difference]: With dead ends: 88274 [2023-12-20 03:47:34,639 INFO L226 Difference]: Without dead ends: 62832 [2023-12-20 03:47:34,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:34,683 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 738 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:34,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 914 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62832 states. [2023-12-20 03:47:35,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62832 to 62830. [2023-12-20 03:47:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62830 states, 62829 states have (on average 1.4604084101290806) internal successors, (91756), 62829 states have internal predecessors, (91756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62830 states to 62830 states and 91756 transitions. [2023-12-20 03:47:35,858 INFO L78 Accepts]: Start accepts. Automaton has 62830 states and 91756 transitions. Word has length 179 [2023-12-20 03:47:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:35,859 INFO L495 AbstractCegarLoop]: Abstraction has 62830 states and 91756 transitions. [2023-12-20 03:47:35,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 62830 states and 91756 transitions. [2023-12-20 03:47:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 03:47:35,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:35,875 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] [2023-12-20 03:47:35,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 03:47:35,875 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:35,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:35,875 INFO L85 PathProgramCache]: Analyzing trace with hash 492095186, now seen corresponding path program 1 times [2023-12-20 03:47:35,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:35,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653591819] [2023-12-20 03:47:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:35,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:36,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:36,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653591819] [2023-12-20 03:47:36,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653591819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:36,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:36,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:36,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838903697] [2023-12-20 03:47:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:36,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:36,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:36,059 INFO L87 Difference]: Start difference. First operand 62830 states and 91756 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:36,642 INFO L93 Difference]: Finished difference Result 115948 states and 171468 transitions. [2023-12-20 03:47:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:36,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-20 03:47:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:36,751 INFO L225 Difference]: With dead ends: 115948 [2023-12-20 03:47:36,751 INFO L226 Difference]: Without dead ends: 88350 [2023-12-20 03:47:36,773 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 [2023-12-20 03:47:36,774 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 393 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:36,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1768 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:36,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88350 states. [2023-12-20 03:47:37,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88350 to 62758. [2023-12-20 03:47:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62758 states, 62757 states have (on average 1.4592157050209538) internal successors, (91576), 62757 states have internal predecessors, (91576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:37,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62758 states to 62758 states and 91576 transitions. [2023-12-20 03:47:37,880 INFO L78 Accepts]: Start accepts. Automaton has 62758 states and 91576 transitions. Word has length 179 [2023-12-20 03:47:37,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:37,880 INFO L495 AbstractCegarLoop]: Abstraction has 62758 states and 91576 transitions. [2023-12-20 03:47:37,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:37,880 INFO L276 IsEmpty]: Start isEmpty. Operand 62758 states and 91576 transitions. [2023-12-20 03:47:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 03:47:37,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:37,897 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] [2023-12-20 03:47:37,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 03:47:37,897 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:37,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash -919578640, now seen corresponding path program 1 times [2023-12-20 03:47:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:37,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266094912] [2023-12-20 03:47:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:38,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:38,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266094912] [2023-12-20 03:47:38,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266094912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:38,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:38,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:38,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85933704] [2023-12-20 03:47:38,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:38,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:38,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:38,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:38,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:38,057 INFO L87 Difference]: Start difference. First operand 62758 states and 91576 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:38,754 INFO L93 Difference]: Finished difference Result 168462 states and 250984 transitions. [2023-12-20 03:47:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:38,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-20 03:47:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:38,919 INFO L225 Difference]: With dead ends: 168462 [2023-12-20 03:47:38,919 INFO L226 Difference]: Without dead ends: 114326 [2023-12-20 03:47:38,964 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 [2023-12-20 03:47:38,965 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 401 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:38,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1841 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114326 states. [2023-12-20 03:47:40,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114326 to 62686. [2023-12-20 03:47:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62686 states, 62685 states have (on average 1.458052165589854) internal successors, (91398), 62685 states have internal predecessors, (91398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62686 states to 62686 states and 91398 transitions. [2023-12-20 03:47:40,202 INFO L78 Accepts]: Start accepts. Automaton has 62686 states and 91398 transitions. Word has length 179 [2023-12-20 03:47:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:40,202 INFO L495 AbstractCegarLoop]: Abstraction has 62686 states and 91398 transitions. [2023-12-20 03:47:40,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 62686 states and 91398 transitions. [2023-12-20 03:47:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 03:47:40,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:40,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:47:40,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 03:47:40,215 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:40,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:40,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1362943007, now seen corresponding path program 1 times [2023-12-20 03:47:40,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:40,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962083555] [2023-12-20 03:47:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962083555] [2023-12-20 03:47:40,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962083555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:40,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610022789] [2023-12-20 03:47:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:40,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:40,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:40,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:40,778 INFO L87 Difference]: Start difference. First operand 62686 states and 91398 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:41,181 INFO L93 Difference]: Finished difference Result 175463 states and 259355 transitions. [2023-12-20 03:47:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:41,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-20 03:47:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:41,337 INFO L225 Difference]: With dead ends: 175463 [2023-12-20 03:47:41,338 INFO L226 Difference]: Without dead ends: 123157 [2023-12-20 03:47:41,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:41,396 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 603 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:41,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1016 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:47:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123157 states. [2023-12-20 03:47:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123157 to 123155. [2023-12-20 03:47:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123155 states, 123154 states have (on average 1.4589619500787632) internal successors, (179677), 123154 states have internal predecessors, (179677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123155 states to 123155 states and 179677 transitions. [2023-12-20 03:47:43,642 INFO L78 Accepts]: Start accepts. Automaton has 123155 states and 179677 transitions. Word has length 179 [2023-12-20 03:47:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:43,643 INFO L495 AbstractCegarLoop]: Abstraction has 123155 states and 179677 transitions. [2023-12-20 03:47:43,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 123155 states and 179677 transitions. [2023-12-20 03:47:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 03:47:43,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:43,660 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] [2023-12-20 03:47:43,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 03:47:43,660 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:43,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash -259362396, now seen corresponding path program 1 times [2023-12-20 03:47:43,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:43,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315309163] [2023-12-20 03:47:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:43,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:43,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:43,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315309163] [2023-12-20 03:47:43,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315309163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:43,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:43,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:43,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649538454] [2023-12-20 03:47:43,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:43,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:43,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:43,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:43,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:43,807 INFO L87 Difference]: Start difference. First operand 123155 states and 179677 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:44,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:44,747 INFO L93 Difference]: Finished difference Result 228819 states and 338041 transitions. [2023-12-20 03:47:44,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:44,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-20 03:47:44,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:45,021 INFO L225 Difference]: With dead ends: 228819 [2023-12-20 03:47:45,022 INFO L226 Difference]: Without dead ends: 173193 [2023-12-20 03:47:45,093 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 [2023-12-20 03:47:45,094 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 409 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:45,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1872 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:45,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173193 states. [2023-12-20 03:47:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173193 to 120775. [2023-12-20 03:47:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120775 states, 120774 states have (on average 1.4634192789838874) internal successors, (176743), 120774 states have internal predecessors, (176743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120775 states to 120775 states and 176743 transitions. [2023-12-20 03:47:47,570 INFO L78 Accepts]: Start accepts. Automaton has 120775 states and 176743 transitions. Word has length 179 [2023-12-20 03:47:47,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:47,570 INFO L495 AbstractCegarLoop]: Abstraction has 120775 states and 176743 transitions. [2023-12-20 03:47:47,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 120775 states and 176743 transitions. [2023-12-20 03:47:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 03:47:47,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:47,586 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] [2023-12-20 03:47:47,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 03:47:47,587 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:47,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash -548759109, now seen corresponding path program 1 times [2023-12-20 03:47:47,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:47,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578356694] [2023-12-20 03:47:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:47,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578356694] [2023-12-20 03:47:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578356694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:47,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:47,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136999384] [2023-12-20 03:47:47,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:47,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:47:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:47:47,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:47:47,698 INFO L87 Difference]: Start difference. First operand 120775 states and 176743 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:48,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:48,714 INFO L93 Difference]: Finished difference Result 240451 states and 352267 transitions. [2023-12-20 03:47:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:47:48,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-20 03:47:48,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:48,920 INFO L225 Difference]: With dead ends: 240451 [2023-12-20 03:47:48,920 INFO L226 Difference]: Without dead ends: 120775 [2023-12-20 03:47:48,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:47:48,991 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1227 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:48,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 436 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:47:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120775 states. [2023-12-20 03:47:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120775 to 120775. [2023-12-20 03:47:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120775 states, 120774 states have (on average 1.4465779058406611) internal successors, (174709), 120774 states have internal predecessors, (174709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120775 states to 120775 states and 174709 transitions. [2023-12-20 03:47:50,979 INFO L78 Accepts]: Start accepts. Automaton has 120775 states and 174709 transitions. Word has length 179 [2023-12-20 03:47:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:50,979 INFO L495 AbstractCegarLoop]: Abstraction has 120775 states and 174709 transitions. [2023-12-20 03:47:50,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 120775 states and 174709 transitions. [2023-12-20 03:47:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 03:47:50,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:50,994 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] [2023-12-20 03:47:50,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 03:47:50,994 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:50,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:50,994 INFO L85 PathProgramCache]: Analyzing trace with hash -398211982, now seen corresponding path program 1 times [2023-12-20 03:47:50,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:50,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251123161] [2023-12-20 03:47:50,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:50,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:51,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:51,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251123161] [2023-12-20 03:47:51,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251123161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:51,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:51,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:47:51,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242841612] [2023-12-20 03:47:51,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:51,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:47:51,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:51,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:47:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:47:51,218 INFO L87 Difference]: Start difference. First operand 120775 states and 174709 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:53,048 INFO L93 Difference]: Finished difference Result 349919 states and 509273 transitions. [2023-12-20 03:47:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 03:47:53,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-20 03:47:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:53,564 INFO L225 Difference]: With dead ends: 349919 [2023-12-20 03:47:53,564 INFO L226 Difference]: Without dead ends: 276085 [2023-12-20 03:47:53,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:47:53,622 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 4352 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4352 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:53,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4352 Valid, 1194 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 03:47:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276085 states. [2023-12-20 03:47:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276085 to 144275. [2023-12-20 03:47:56,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144275 states, 144274 states have (on average 1.4547527621054384) internal successors, (209883), 144274 states have internal predecessors, (209883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144275 states to 144275 states and 209883 transitions. [2023-12-20 03:47:56,415 INFO L78 Accepts]: Start accepts. Automaton has 144275 states and 209883 transitions. Word has length 179 [2023-12-20 03:47:56,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:56,415 INFO L495 AbstractCegarLoop]: Abstraction has 144275 states and 209883 transitions. [2023-12-20 03:47:56,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 144275 states and 209883 transitions. [2023-12-20 03:47:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 03:47:56,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:56,435 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] [2023-12-20 03:47:56,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 03:47:56,435 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:56,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:56,436 INFO L85 PathProgramCache]: Analyzing trace with hash 531285712, now seen corresponding path program 1 times [2023-12-20 03:47:56,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:56,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562380235] [2023-12-20 03:47:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:56,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:47:59,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:59,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562380235] [2023-12-20 03:47:59,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562380235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:59,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:59,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-20 03:47:59,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968981819] [2023-12-20 03:47:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:59,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:47:59,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:59,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:47:59,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:47:59,470 INFO L87 Difference]: Start difference. First operand 144275 states and 209883 transitions. Second operand has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:04,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:48:04,409 INFO L93 Difference]: Finished difference Result 405412 states and 598464 transitions. [2023-12-20 03:48:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-20 03:48:04,410 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2023-12-20 03:48:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:48:05,400 INFO L225 Difference]: With dead ends: 405412 [2023-12-20 03:48:05,400 INFO L226 Difference]: Without dead ends: 347990 [2023-12-20 03:48:05,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=321, Invalid=1239, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 03:48:05,448 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 3014 mSDsluCounter, 9510 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 10285 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 03:48:05,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3014 Valid, 10285 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 03:48:05,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347990 states. [2023-12-20 03:48:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347990 to 144944. [2023-12-20 03:48:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144944 states, 144943 states have (on average 1.4533851238072897) internal successors, (210658), 144943 states have internal predecessors, (210658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144944 states to 144944 states and 210658 transitions. [2023-12-20 03:48:08,935 INFO L78 Accepts]: Start accepts. Automaton has 144944 states and 210658 transitions. Word has length 179 [2023-12-20 03:48:08,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:08,935 INFO L495 AbstractCegarLoop]: Abstraction has 144944 states and 210658 transitions. [2023-12-20 03:48:08,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 144944 states and 210658 transitions. [2023-12-20 03:48:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 03:48:08,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:08,955 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] [2023-12-20 03:48:08,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 03:48:08,955 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:08,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:08,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2048314880, now seen corresponding path program 1 times [2023-12-20 03:48:08,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:08,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231929439] [2023-12-20 03:48:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:08,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:48:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231929439] [2023-12-20 03:48:09,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231929439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:09,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:48:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167361271] [2023-12-20 03:48:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:09,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:48:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:48:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:48:09,009 INFO L87 Difference]: Start difference. First operand 144944 states and 210658 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:10,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:48:10,098 INFO L93 Difference]: Finished difference Result 258135 states and 375417 transitions. [2023-12-20 03:48:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:48:10,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2023-12-20 03:48:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:48:10,320 INFO L225 Difference]: With dead ends: 258135 [2023-12-20 03:48:10,320 INFO L226 Difference]: Without dead ends: 143454 [2023-12-20 03:48:10,392 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 [2023-12-20 03:48:10,393 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 372 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:48:10,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 595 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:48:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143454 states. [2023-12-20 03:48:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143454 to 143454. [2023-12-20 03:48:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143454 states, 143453 states have (on average 1.4493248659839808) internal successors, (207910), 143453 states have internal predecessors, (207910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143454 states to 143454 states and 207910 transitions. [2023-12-20 03:48:12,491 INFO L78 Accepts]: Start accepts. Automaton has 143454 states and 207910 transitions. Word has length 180 [2023-12-20 03:48:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:12,491 INFO L495 AbstractCegarLoop]: Abstraction has 143454 states and 207910 transitions. [2023-12-20 03:48:12,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 143454 states and 207910 transitions. [2023-12-20 03:48:12,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 03:48:12,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:12,510 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] [2023-12-20 03:48:12,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 03:48:12,511 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:12,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash 420364610, now seen corresponding path program 1 times [2023-12-20 03:48:12,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:12,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934945054] [2023-12-20 03:48:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:12,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:48:12,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:12,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934945054] [2023-12-20 03:48:12,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934945054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:12,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:12,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:48:12,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942515467] [2023-12-20 03:48:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:12,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:48:12,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:12,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:48:12,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:48:12,575 INFO L87 Difference]: Start difference. First operand 143454 states and 207910 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:48:13,733 INFO L93 Difference]: Finished difference Result 257170 states and 371992 transitions. [2023-12-20 03:48:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:48:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2023-12-20 03:48:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:48:13,970 INFO L225 Difference]: With dead ends: 257170 [2023-12-20 03:48:13,970 INFO L226 Difference]: Without dead ends: 153313 [2023-12-20 03:48:14,059 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 [2023-12-20 03:48:14,060 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 358 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:48:14,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 502 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:48:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153313 states. [2023-12-20 03:48:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153313 to 142621. [2023-12-20 03:48:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142621 states, 142620 states have (on average 1.4466834946010376) internal successors, (206326), 142620 states have internal predecessors, (206326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:16,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142621 states to 142621 states and 206326 transitions. [2023-12-20 03:48:16,588 INFO L78 Accepts]: Start accepts. Automaton has 142621 states and 206326 transitions. Word has length 180 [2023-12-20 03:48:16,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:16,588 INFO L495 AbstractCegarLoop]: Abstraction has 142621 states and 206326 transitions. [2023-12-20 03:48:16,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:16,589 INFO L276 IsEmpty]: Start isEmpty. Operand 142621 states and 206326 transitions. [2023-12-20 03:48:16,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 03:48:16,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:16,607 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] [2023-12-20 03:48:16,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 03:48:16,607 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:16,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -808968732, now seen corresponding path program 1 times [2023-12-20 03:48:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:16,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696975619] [2023-12-20 03:48:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:48:16,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:16,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696975619] [2023-12-20 03:48:16,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696975619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:16,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:48:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786858234] [2023-12-20 03:48:16,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:16,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:48:16,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:16,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:48:16,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:48:16,666 INFO L87 Difference]: Start difference. First operand 142621 states and 206326 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:48:17,627 INFO L93 Difference]: Finished difference Result 245238 states and 354499 transitions. [2023-12-20 03:48:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:48:17,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2023-12-20 03:48:17,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:48:17,869 INFO L225 Difference]: With dead ends: 245238 [2023-12-20 03:48:17,869 INFO L226 Difference]: Without dead ends: 143754 [2023-12-20 03:48:17,944 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 [2023-12-20 03:48:17,944 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 343 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:48:17,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 447 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:48:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143754 states. [2023-12-20 03:48:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143754 to 141034. [2023-12-20 03:48:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141034 states, 141033 states have (on average 1.4454772996390917) internal successors, (203860), 141033 states have internal predecessors, (203860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:20,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141034 states to 141034 states and 203860 transitions. [2023-12-20 03:48:20,008 INFO L78 Accepts]: Start accepts. Automaton has 141034 states and 203860 transitions. Word has length 180 [2023-12-20 03:48:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:20,008 INFO L495 AbstractCegarLoop]: Abstraction has 141034 states and 203860 transitions. [2023-12-20 03:48:20,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 141034 states and 203860 transitions. [2023-12-20 03:48:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 03:48:20,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:20,027 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] [2023-12-20 03:48:20,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-20 03:48:20,027 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:20,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:20,027 INFO L85 PathProgramCache]: Analyzing trace with hash -929124051, now seen corresponding path program 1 times [2023-12-20 03:48:20,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:20,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321603596] [2023-12-20 03:48:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:20,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:48:20,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:20,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321603596] [2023-12-20 03:48:20,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321603596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:20,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:20,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:48:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133225751] [2023-12-20 03:48:20,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:20,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:48:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:48:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:48:20,085 INFO L87 Difference]: Start difference. First operand 141034 states and 203860 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:21,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:48:21,097 INFO L93 Difference]: Finished difference Result 244728 states and 354626 transitions. [2023-12-20 03:48:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:48:21,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2023-12-20 03:48:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:48:21,329 INFO L225 Difference]: With dead ends: 244728 [2023-12-20 03:48:21,329 INFO L226 Difference]: Without dead ends: 140343 [2023-12-20 03:48:21,419 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 [2023-12-20 03:48:21,420 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 337 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:48:21,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 427 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 03:48:21,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140343 states. [2023-12-20 03:48:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140343 to 140343. [2023-12-20 03:48:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140343 states, 140342 states have (on average 1.442690000142509) internal successors, (202470), 140342 states have internal predecessors, (202470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140343 states to 140343 states and 202470 transitions. [2023-12-20 03:48:24,065 INFO L78 Accepts]: Start accepts. Automaton has 140343 states and 202470 transitions. Word has length 180 [2023-12-20 03:48:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:24,065 INFO L495 AbstractCegarLoop]: Abstraction has 140343 states and 202470 transitions. [2023-12-20 03:48:24,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 140343 states and 202470 transitions. [2023-12-20 03:48:24,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 03:48:24,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:24,084 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] [2023-12-20 03:48:24,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 03:48:24,084 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:24,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1573193699, now seen corresponding path program 1 times [2023-12-20 03:48:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:24,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037423741] [2023-12-20 03:48:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:24,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:48:24,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:24,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037423741] [2023-12-20 03:48:24,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037423741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:24,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:24,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:48:24,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245118936] [2023-12-20 03:48:24,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:24,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:48:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:48:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:48:24,149 INFO L87 Difference]: Start difference. First operand 140343 states and 202470 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:25,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:48:25,281 INFO L93 Difference]: Finished difference Result 252044 states and 362158 transitions. [2023-12-20 03:48:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:48:25,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2023-12-20 03:48:25,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:48:25,564 INFO L225 Difference]: With dead ends: 252044 [2023-12-20 03:48:25,564 INFO L226 Difference]: Without dead ends: 150537 [2023-12-20 03:48:25,643 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 [2023-12-20 03:48:25,644 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 339 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:48:25,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 493 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:48:25,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150537 states. [2023-12-20 03:48:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150537 to 139632. [2023-12-20 03:48:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139632 states, 139631 states have (on average 1.4397805644878285) internal successors, (201038), 139631 states have internal predecessors, (201038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139632 states to 139632 states and 201038 transitions. [2023-12-20 03:48:27,728 INFO L78 Accepts]: Start accepts. Automaton has 139632 states and 201038 transitions. Word has length 180 [2023-12-20 03:48:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:27,728 INFO L495 AbstractCegarLoop]: Abstraction has 139632 states and 201038 transitions. [2023-12-20 03:48:27,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 139632 states and 201038 transitions. [2023-12-20 03:48:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 03:48:27,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:27,745 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] [2023-12-20 03:48:27,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 03:48:27,745 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:27,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash 99315269, now seen corresponding path program 1 times [2023-12-20 03:48:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:27,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659766944] [2023-12-20 03:48:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:27,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:48:27,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:27,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659766944] [2023-12-20 03:48:27,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659766944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:27,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:27,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:48:27,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840323528] [2023-12-20 03:48:27,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:27,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:48:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:48:27,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:48:27,797 INFO L87 Difference]: Start difference. First operand 139632 states and 201038 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:28,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:48:28,871 INFO L93 Difference]: Finished difference Result 250303 states and 359323 transitions. [2023-12-20 03:48:28,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:48:28,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2023-12-20 03:48:28,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:48:29,103 INFO L225 Difference]: With dead ends: 250303 [2023-12-20 03:48:29,103 INFO L226 Difference]: Without dead ends: 152057 [2023-12-20 03:48:29,187 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 [2023-12-20 03:48:29,187 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 342 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:48:29,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 530 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:48:29,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152057 states. [2023-12-20 03:48:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152057 to 137304. [2023-12-20 03:48:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137304 states, 137303 states have (on average 1.4361740093078812) internal successors, (197191), 137303 states have internal predecessors, (197191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137304 states to 137304 states and 197191 transitions. [2023-12-20 03:48:31,767 INFO L78 Accepts]: Start accepts. Automaton has 137304 states and 197191 transitions. Word has length 180 [2023-12-20 03:48:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:31,767 INFO L495 AbstractCegarLoop]: Abstraction has 137304 states and 197191 transitions. [2023-12-20 03:48:31,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 137304 states and 197191 transitions. [2023-12-20 03:48:31,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:48:31,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:31,791 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] [2023-12-20 03:48:31,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 03:48:31,791 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:31,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:31,792 INFO L85 PathProgramCache]: Analyzing trace with hash 433997235, now seen corresponding path program 1 times [2023-12-20 03:48:31,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:31,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511469932] [2023-12-20 03:48:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:31,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:48:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511469932] [2023-12-20 03:48:34,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511469932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:34,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:34,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-20 03:48:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979096653] [2023-12-20 03:48:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:34,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 03:48:34,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:34,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 03:48:34,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-12-20 03:48:34,376 INFO L87 Difference]: Start difference. First operand 137304 states and 197191 transitions. Second operand has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:48:44,300 INFO L93 Difference]: Finished difference Result 405080 states and 586083 transitions. [2023-12-20 03:48:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-20 03:48:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:48:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:48:44,937 INFO L225 Difference]: With dead ends: 405080 [2023-12-20 03:48:44,937 INFO L226 Difference]: Without dead ends: 375998 [2023-12-20 03:48:45,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1773 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1423, Invalid=5549, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 03:48:45,047 INFO L413 NwaCegarLoop]: 1372 mSDtfsCounter, 5782 mSDsluCounter, 18041 mSDsCounter, 0 mSdLazyCounter, 6149 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5782 SdHoareTripleChecker+Valid, 19413 SdHoareTripleChecker+Invalid, 6268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 6149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:48:45,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5782 Valid, 19413 Invalid, 6268 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 6149 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-20 03:48:45,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375998 states. [2023-12-20 03:48:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375998 to 138384. [2023-12-20 03:48:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138384 states, 138383 states have (on average 1.4333191215684007) internal successors, (198347), 138383 states have internal predecessors, (198347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138384 states to 138384 states and 198347 transitions. [2023-12-20 03:48:48,335 INFO L78 Accepts]: Start accepts. Automaton has 138384 states and 198347 transitions. Word has length 182 [2023-12-20 03:48:48,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:48,335 INFO L495 AbstractCegarLoop]: Abstraction has 138384 states and 198347 transitions. [2023-12-20 03:48:48,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:48,335 INFO L276 IsEmpty]: Start isEmpty. Operand 138384 states and 198347 transitions. [2023-12-20 03:48:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:48:48,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:48,353 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] [2023-12-20 03:48:48,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 03:48:48,353 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:48,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:48,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1924958555, now seen corresponding path program 1 times [2023-12-20 03:48:48,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:48,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256282124] [2023-12-20 03:48:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:48,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:48:48,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:48,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256282124] [2023-12-20 03:48:48,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256282124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:48,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:48,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:48:48,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322952382] [2023-12-20 03:48:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:48,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:48:48,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:48,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:48:48,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:48:48,876 INFO L87 Difference]: Start difference. First operand 138384 states and 198347 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:50,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:48:50,167 INFO L93 Difference]: Finished difference Result 269900 states and 392483 transitions. [2023-12-20 03:48:50,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:48:50,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:48:50,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:48:50,636 INFO L225 Difference]: With dead ends: 269900 [2023-12-20 03:48:50,636 INFO L226 Difference]: Without dead ends: 240660 [2023-12-20 03:48:50,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:48:50,715 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 802 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:48:50,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1657 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:48:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240660 states. [2023-12-20 03:48:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240660 to 182214. [2023-12-20 03:48:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182214 states, 182213 states have (on average 1.4404735117691931) internal successors, (262473), 182213 states have internal predecessors, (262473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182214 states to 182214 states and 262473 transitions. [2023-12-20 03:48:53,641 INFO L78 Accepts]: Start accepts. Automaton has 182214 states and 262473 transitions. Word has length 182 [2023-12-20 03:48:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:53,641 INFO L495 AbstractCegarLoop]: Abstraction has 182214 states and 262473 transitions. [2023-12-20 03:48:53,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 182214 states and 262473 transitions. [2023-12-20 03:48:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:48:53,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:53,658 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] [2023-12-20 03:48:53,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-20 03:48:53,658 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:53,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -52371605, now seen corresponding path program 1 times [2023-12-20 03:48:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:53,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657920521] [2023-12-20 03:48:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:53,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:48:55,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:55,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657920521] [2023-12-20 03:48:55,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657920521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:55,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:55,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-20 03:48:55,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965196426] [2023-12-20 03:48:55,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:55,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 03:48:55,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:55,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 03:48:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-12-20 03:48:55,744 INFO L87 Difference]: Start difference. First operand 182214 states and 262473 transitions. Second operand has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:02,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:49:02,717 INFO L93 Difference]: Finished difference Result 609182 states and 878596 transitions. [2023-12-20 03:49:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-20 03:49:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:49:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:49:03,832 INFO L225 Difference]: With dead ends: 609182 [2023-12-20 03:49:03,832 INFO L226 Difference]: Without dead ends: 531340 [2023-12-20 03:49:03,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=815, Invalid=3607, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 03:49:03,966 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 5534 mSDsluCounter, 14651 mSDsCounter, 0 mSdLazyCounter, 5165 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5534 SdHoareTripleChecker+Valid, 15704 SdHoareTripleChecker+Invalid, 5307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 5165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:49:03,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5534 Valid, 15704 Invalid, 5307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 5165 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 03:49:04,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531340 states. [2023-12-20 03:49:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531340 to 178987. [2023-12-20 03:49:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178987 states, 178986 states have (on average 1.4369336149196026) internal successors, (257191), 178986 states have internal predecessors, (257191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178987 states to 178987 states and 257191 transitions. [2023-12-20 03:49:09,345 INFO L78 Accepts]: Start accepts. Automaton has 178987 states and 257191 transitions. Word has length 182 [2023-12-20 03:49:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:49:09,345 INFO L495 AbstractCegarLoop]: Abstraction has 178987 states and 257191 transitions. [2023-12-20 03:49:09,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 178987 states and 257191 transitions. [2023-12-20 03:49:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:49:09,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:49:09,364 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] [2023-12-20 03:49:09,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-20 03:49:09,364 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:49:09,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:49:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1406863805, now seen corresponding path program 1 times [2023-12-20 03:49:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:49:09,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829043996] [2023-12-20 03:49:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:49:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:49:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:49:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:49:09,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:49:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829043996] [2023-12-20 03:49:09,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829043996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:49:09,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:49:09,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:49:09,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050775637] [2023-12-20 03:49:09,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:49:09,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:49:09,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:49:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:49:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:49:09,488 INFO L87 Difference]: Start difference. First operand 178987 states and 257191 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:49:10,865 INFO L93 Difference]: Finished difference Result 320801 states and 467445 transitions. [2023-12-20 03:49:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:49:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:49:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:49:11,681 INFO L225 Difference]: With dead ends: 320801 [2023-12-20 03:49:11,681 INFO L226 Difference]: Without dead ends: 262341 [2023-12-20 03:49:11,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:49:11,805 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 951 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:49:11,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1516 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:49:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262341 states. [2023-12-20 03:49:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262341 to 208207. [2023-12-20 03:49:14,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208207 states, 208206 states have (on average 1.4408374398432322) internal successors, (299991), 208206 states have internal predecessors, (299991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208207 states to 208207 states and 299991 transitions. [2023-12-20 03:49:15,294 INFO L78 Accepts]: Start accepts. Automaton has 208207 states and 299991 transitions. Word has length 182 [2023-12-20 03:49:15,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:49:15,295 INFO L495 AbstractCegarLoop]: Abstraction has 208207 states and 299991 transitions. [2023-12-20 03:49:15,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:15,295 INFO L276 IsEmpty]: Start isEmpty. Operand 208207 states and 299991 transitions. [2023-12-20 03:49:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:49:15,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:49:15,324 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] [2023-12-20 03:49:15,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-20 03:49:15,325 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:49:15,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:49:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1715674334, now seen corresponding path program 1 times [2023-12-20 03:49:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:49:15,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997517623] [2023-12-20 03:49:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:49:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:49:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:49:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:49:15,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:49:15,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997517623] [2023-12-20 03:49:15,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997517623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:49:15,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:49:15,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:49:15,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991302400] [2023-12-20 03:49:15,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:49:15,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:49:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:49:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:49:15,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:49:15,528 INFO L87 Difference]: Start difference. First operand 208207 states and 299991 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:49:16,638 INFO L93 Difference]: Finished difference Result 343890 states and 500014 transitions. [2023-12-20 03:49:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:49:16,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:49:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:49:17,029 INFO L225 Difference]: With dead ends: 343890 [2023-12-20 03:49:17,029 INFO L226 Difference]: Without dead ends: 200532 [2023-12-20 03:49:17,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:49:17,110 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 656 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:49:17,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 896 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:49:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200532 states. [2023-12-20 03:49:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200532 to 171310. [2023-12-20 03:49:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171310 states, 171309 states have (on average 1.4293586443210806) internal successors, (244862), 171309 states have internal predecessors, (244862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171310 states to 171310 states and 244862 transitions. [2023-12-20 03:49:20,113 INFO L78 Accepts]: Start accepts. Automaton has 171310 states and 244862 transitions. Word has length 182 [2023-12-20 03:49:20,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:49:20,113 INFO L495 AbstractCegarLoop]: Abstraction has 171310 states and 244862 transitions. [2023-12-20 03:49:20,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 171310 states and 244862 transitions. [2023-12-20 03:49:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:49:20,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:49:20,133 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] [2023-12-20 03:49:20,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-20 03:49:20,133 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:49:20,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:49:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1784522880, now seen corresponding path program 1 times [2023-12-20 03:49:20,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:49:20,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188400475] [2023-12-20 03:49:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:49:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:49:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:49:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:49:20,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:49:20,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188400475] [2023-12-20 03:49:20,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188400475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:49:20,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:49:20,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:49:20,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112252240] [2023-12-20 03:49:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:49:20,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:49:20,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:49:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:49:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:49:20,261 INFO L87 Difference]: Start difference. First operand 171310 states and 244862 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:49:21,217 INFO L93 Difference]: Finished difference Result 248551 states and 357443 transitions. [2023-12-20 03:49:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:49:21,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:49:21,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:49:21,527 INFO L225 Difference]: With dead ends: 248551 [2023-12-20 03:49:21,527 INFO L226 Difference]: Without dead ends: 171312 [2023-12-20 03:49:21,614 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 [2023-12-20 03:49:21,614 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 241 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:49:21,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 859 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:49:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171312 states. [2023-12-20 03:49:23,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171312 to 171310. [2023-12-20 03:49:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171310 states, 171309 states have (on average 1.424385175326457) internal successors, (244010), 171309 states have internal predecessors, (244010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171310 states to 171310 states and 244010 transitions. [2023-12-20 03:49:24,271 INFO L78 Accepts]: Start accepts. Automaton has 171310 states and 244010 transitions. Word has length 182 [2023-12-20 03:49:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:49:24,271 INFO L495 AbstractCegarLoop]: Abstraction has 171310 states and 244010 transitions. [2023-12-20 03:49:24,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 171310 states and 244010 transitions. [2023-12-20 03:49:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:49:24,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:49:24,290 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] [2023-12-20 03:49:24,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-20 03:49:24,290 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:49:24,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:49:24,291 INFO L85 PathProgramCache]: Analyzing trace with hash -952091985, now seen corresponding path program 1 times [2023-12-20 03:49:24,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:49:24,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985037209] [2023-12-20 03:49:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:49:24,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:49:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:49:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:49:24,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:49:24,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985037209] [2023-12-20 03:49:24,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985037209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:49:24,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:49:24,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:49:24,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995141041] [2023-12-20 03:49:24,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:49:24,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:49:24,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:49:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:49:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:49:24,392 INFO L87 Difference]: Start difference. First operand 171310 states and 244010 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:27,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:49:27,323 INFO L93 Difference]: Finished difference Result 650372 states and 946758 transitions. [2023-12-20 03:49:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:49:27,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:49:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:49:28,565 INFO L225 Difference]: With dead ends: 650372 [2023-12-20 03:49:28,565 INFO L226 Difference]: Without dead ends: 501302 [2023-12-20 03:49:28,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:49:28,731 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1316 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:49:28,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 1500 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 03:49:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501302 states. [2023-12-20 03:49:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501302 to 304480. [2023-12-20 03:49:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304480 states, 304479 states have (on average 1.4306208309932704) internal successors, (435594), 304479 states have internal predecessors, (435594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304480 states to 304480 states and 435594 transitions. [2023-12-20 03:49:35,432 INFO L78 Accepts]: Start accepts. Automaton has 304480 states and 435594 transitions. Word has length 182 [2023-12-20 03:49:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:49:35,433 INFO L495 AbstractCegarLoop]: Abstraction has 304480 states and 435594 transitions. [2023-12-20 03:49:35,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 304480 states and 435594 transitions. [2023-12-20 03:49:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:49:35,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:49:35,450 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] [2023-12-20 03:49:35,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-20 03:49:35,450 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:49:35,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:49:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1678611600, now seen corresponding path program 1 times [2023-12-20 03:49:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:49:35,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862801229] [2023-12-20 03:49:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:49:35,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:49:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:49:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:49:35,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:49:35,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862801229] [2023-12-20 03:49:35,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862801229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:49:35,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:49:35,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:49:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134137564] [2023-12-20 03:49:35,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:49:35,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:49:35,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:49:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:49:35,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:49:35,568 INFO L87 Difference]: Start difference. First operand 304480 states and 435594 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:37,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:49:37,977 INFO L93 Difference]: Finished difference Result 545300 states and 785464 transitions. [2023-12-20 03:49:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:49:37,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:49:37,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:49:39,037 INFO L225 Difference]: With dead ends: 545300 [2023-12-20 03:49:39,037 INFO L226 Difference]: Without dead ends: 486840 [2023-12-20 03:49:39,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:49:39,140 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 731 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:49:39,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1646 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:49:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486840 states. [2023-12-20 03:49:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486840 to 333700. [2023-12-20 03:49:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333700 states, 333699 states have (on average 1.4323207441436745) internal successors, (477964), 333699 states have internal predecessors, (477964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333700 states to 333700 states and 477964 transitions. [2023-12-20 03:49:45,820 INFO L78 Accepts]: Start accepts. Automaton has 333700 states and 477964 transitions. Word has length 182 [2023-12-20 03:49:45,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:49:45,820 INFO L495 AbstractCegarLoop]: Abstraction has 333700 states and 477964 transitions. [2023-12-20 03:49:45,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:45,820 INFO L276 IsEmpty]: Start isEmpty. Operand 333700 states and 477964 transitions. [2023-12-20 03:49:45,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:49:45,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:49:45,835 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] [2023-12-20 03:49:45,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-20 03:49:45,836 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:49:45,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:49:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1084123289, now seen corresponding path program 1 times [2023-12-20 03:49:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:49:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795309965] [2023-12-20 03:49:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:49:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:49:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:49:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:49:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:49:47,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795309965] [2023-12-20 03:49:47,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795309965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:49:47,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:49:47,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-20 03:49:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131604376] [2023-12-20 03:49:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:49:47,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:49:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:49:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:49:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:49:47,667 INFO L87 Difference]: Start difference. First operand 333700 states and 477964 transitions. Second operand has 21 states, 21 states have (on average 8.666666666666666) internal successors, (182), 20 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:49:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:49:58,351 INFO L93 Difference]: Finished difference Result 682943 states and 976200 transitions. [2023-12-20 03:49:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-20 03:49:58,351 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.666666666666666) internal successors, (182), 20 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:49:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:00,060 INFO L225 Difference]: With dead ends: 682943 [2023-12-20 03:50:00,060 INFO L226 Difference]: Without dead ends: 597559 [2023-12-20 03:50:00,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1008, Invalid=3684, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 03:50:00,237 INFO L413 NwaCegarLoop]: 1054 mSDtfsCounter, 5532 mSDsluCounter, 14672 mSDsCounter, 0 mSdLazyCounter, 5015 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5532 SdHoareTripleChecker+Valid, 15726 SdHoareTripleChecker+Invalid, 5156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 5015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:00,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5532 Valid, 15726 Invalid, 5156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 5015 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 03:50:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597559 states. [2023-12-20 03:50:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597559 to 322509. [2023-12-20 03:50:06,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322509 states, 322508 states have (on average 1.4300885559427983) internal successors, (461215), 322508 states have internal predecessors, (461215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322509 states to 322509 states and 461215 transitions. [2023-12-20 03:50:08,074 INFO L78 Accepts]: Start accepts. Automaton has 322509 states and 461215 transitions. Word has length 182 [2023-12-20 03:50:08,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:08,074 INFO L495 AbstractCegarLoop]: Abstraction has 322509 states and 461215 transitions. [2023-12-20 03:50:08,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.666666666666666) internal successors, (182), 20 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 322509 states and 461215 transitions. [2023-12-20 03:50:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:50:08,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:08,106 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] [2023-12-20 03:50:08,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-20 03:50:08,106 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:08,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:08,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1445680780, now seen corresponding path program 1 times [2023-12-20 03:50:08,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:08,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511726463] [2023-12-20 03:50:08,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:08,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:50:09,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:09,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511726463] [2023-12-20 03:50:09,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511726463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:09,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:09,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-20 03:50:09,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621856067] [2023-12-20 03:50:09,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:09,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:50:09,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:09,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:50:09,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:50:09,706 INFO L87 Difference]: Start difference. First operand 322509 states and 461215 transitions. Second operand has 21 states, 21 states have (on average 8.666666666666666) internal successors, (182), 20 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:18,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:18,598 INFO L93 Difference]: Finished difference Result 560488 states and 797610 transitions. [2023-12-20 03:50:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-20 03:50:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.666666666666666) internal successors, (182), 20 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:50:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:19,486 INFO L225 Difference]: With dead ends: 560488 [2023-12-20 03:50:19,486 INFO L226 Difference]: Without dead ends: 482539 [2023-12-20 03:50:19,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=817, Invalid=3343, Unknown=0, NotChecked=0, Total=4160 [2023-12-20 03:50:19,554 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 4485 mSDsluCounter, 14697 mSDsCounter, 0 mSdLazyCounter, 4920 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 15732 SdHoareTripleChecker+Invalid, 5025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:19,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4485 Valid, 15732 Invalid, 5025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 4920 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 03:50:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482539 states. [2023-12-20 03:50:23,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482539 to 320114. [2023-12-20 03:50:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320114 states, 320113 states have (on average 1.4279457566546814) internal successors, (457104), 320113 states have internal predecessors, (457104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320114 states to 320114 states and 457104 transitions. [2023-12-20 03:50:25,324 INFO L78 Accepts]: Start accepts. Automaton has 320114 states and 457104 transitions. Word has length 182 [2023-12-20 03:50:25,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:25,325 INFO L495 AbstractCegarLoop]: Abstraction has 320114 states and 457104 transitions. [2023-12-20 03:50:25,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.666666666666666) internal successors, (182), 20 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 320114 states and 457104 transitions. [2023-12-20 03:50:25,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:50:25,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:25,341 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] [2023-12-20 03:50:25,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-20 03:50:25,342 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:25,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:25,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1351375778, now seen corresponding path program 1 times [2023-12-20 03:50:25,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:25,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436348528] [2023-12-20 03:50:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:25,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:50:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436348528] [2023-12-20 03:50:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436348528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-20 03:50:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143835766] [2023-12-20 03:50:27,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:27,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 03:50:27,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 03:50:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-12-20 03:50:27,230 INFO L87 Difference]: Start difference. First operand 320114 states and 457104 transitions. Second operand has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:35,289 INFO L93 Difference]: Finished difference Result 466774 states and 664051 transitions. [2023-12-20 03:50:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 03:50:35,289 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:50:35,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:36,167 INFO L225 Difference]: With dead ends: 466774 [2023-12-20 03:50:36,167 INFO L226 Difference]: Without dead ends: 395980 [2023-12-20 03:50:36,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=654, Invalid=2768, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 03:50:36,283 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 5095 mSDsluCounter, 15216 mSDsCounter, 0 mSdLazyCounter, 5035 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5095 SdHoareTripleChecker+Valid, 16332 SdHoareTripleChecker+Invalid, 5112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 5035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:36,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5095 Valid, 16332 Invalid, 5112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 5035 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 03:50:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395980 states. [2023-12-20 03:50:40,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395980 to 314651. [2023-12-20 03:50:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314651 states, 314650 states have (on average 1.4255522008580963) internal successors, (448550), 314650 states have internal predecessors, (448550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314651 states to 314651 states and 448550 transitions. [2023-12-20 03:50:42,270 INFO L78 Accepts]: Start accepts. Automaton has 314651 states and 448550 transitions. Word has length 182 [2023-12-20 03:50:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:42,271 INFO L495 AbstractCegarLoop]: Abstraction has 314651 states and 448550 transitions. [2023-12-20 03:50:42,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 314651 states and 448550 transitions. [2023-12-20 03:50:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 03:50:42,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:50:42,293 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] [2023-12-20 03:50:42,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-20 03:50:42,293 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:50:42,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:50:42,294 INFO L85 PathProgramCache]: Analyzing trace with hash -521643482, now seen corresponding path program 1 times [2023-12-20 03:50:42,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:50:42,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898277743] [2023-12-20 03:50:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:50:42,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:50:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:50:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:50:44,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:50:44,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898277743] [2023-12-20 03:50:44,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898277743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:50:44,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:50:44,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-20 03:50:44,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663355812] [2023-12-20 03:50:44,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:50:44,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 03:50:44,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:50:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 03:50:44,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-12-20 03:50:44,907 INFO L87 Difference]: Start difference. First operand 314651 states and 448550 transitions. Second operand has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:51,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:50:51,497 INFO L93 Difference]: Finished difference Result 669647 states and 958793 transitions. [2023-12-20 03:50:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 03:50:51,498 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2023-12-20 03:50:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:50:52,736 INFO L225 Difference]: With dead ends: 669647 [2023-12-20 03:50:52,737 INFO L226 Difference]: Without dead ends: 585773 [2023-12-20 03:50:52,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 03:50:52,860 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 4864 mSDsluCounter, 11384 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4864 SdHoareTripleChecker+Valid, 12223 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:50:52,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4864 Valid, 12223 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3721 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 03:50:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585773 states. [2023-12-20 03:50:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585773 to 305184. [2023-12-20 03:50:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305184 states, 305183 states have (on average 1.4226021763990786) internal successors, (434154), 305183 states have internal predecessors, (434154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305184 states to 305184 states and 434154 transitions. [2023-12-20 03:50:59,989 INFO L78 Accepts]: Start accepts. Automaton has 305184 states and 434154 transitions. Word has length 182 [2023-12-20 03:50:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:50:59,994 INFO L495 AbstractCegarLoop]: Abstraction has 305184 states and 434154 transitions. [2023-12-20 03:50:59,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.913043478260869) internal successors, (182), 22 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:50:59,995 INFO L276 IsEmpty]: Start isEmpty. Operand 305184 states and 434154 transitions. [2023-12-20 03:51:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 03:51:00,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:00,027 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] [2023-12-20 03:51:00,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-20 03:51:00,028 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:00,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1450840547, now seen corresponding path program 1 times [2023-12-20 03:51:00,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:00,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636575614] [2023-12-20 03:51:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:00,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:51:01,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:01,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636575614] [2023-12-20 03:51:01,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636575614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:01,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:01,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-20 03:51:01,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459428731] [2023-12-20 03:51:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:01,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 03:51:01,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:01,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 03:51:01,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-20 03:51:01,021 INFO L87 Difference]: Start difference. First operand 305184 states and 434154 transitions. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:04,290 INFO L93 Difference]: Finished difference Result 568806 states and 813327 transitions. [2023-12-20 03:51:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 03:51:04,291 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-20 03:51:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:05,202 INFO L225 Difference]: With dead ends: 568806 [2023-12-20 03:51:05,202 INFO L226 Difference]: Without dead ends: 415492 [2023-12-20 03:51:05,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:51:05,363 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 1797 mSDsluCounter, 7234 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 8019 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:05,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 8019 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 03:51:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415492 states. [2023-12-20 03:51:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415492 to 286208. [2023-12-20 03:51:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286208 states, 286207 states have (on average 1.421726233111) internal successors, (406908), 286207 states have internal predecessors, (406908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286208 states to 286208 states and 406908 transitions. [2023-12-20 03:51:11,431 INFO L78 Accepts]: Start accepts. Automaton has 286208 states and 406908 transitions. Word has length 184 [2023-12-20 03:51:11,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:11,431 INFO L495 AbstractCegarLoop]: Abstraction has 286208 states and 406908 transitions. [2023-12-20 03:51:11,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 286208 states and 406908 transitions. [2023-12-20 03:51:11,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 03:51:11,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:11,453 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] [2023-12-20 03:51:11,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-20 03:51:11,453 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:11,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash 259377336, now seen corresponding path program 1 times [2023-12-20 03:51:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746737612] [2023-12-20 03:51:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:51:12,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:12,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746737612] [2023-12-20 03:51:12,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746737612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:12,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:12,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-20 03:51:12,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702624271] [2023-12-20 03:51:12,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:12,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 03:51:12,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:12,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 03:51:12,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:51:12,834 INFO L87 Difference]: Start difference. First operand 286208 states and 406908 transitions. Second operand has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 14 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:16,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:16,058 INFO L93 Difference]: Finished difference Result 431425 states and 612543 transitions. [2023-12-20 03:51:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 03:51:16,058 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 14 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2023-12-20 03:51:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:16,620 INFO L225 Difference]: With dead ends: 431425 [2023-12-20 03:51:16,620 INFO L226 Difference]: Without dead ends: 272571 [2023-12-20 03:51:16,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2023-12-20 03:51:16,778 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 2439 mSDsluCounter, 6250 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 6872 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:16,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2439 Valid, 6872 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 03:51:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272571 states. [2023-12-20 03:51:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272571 to 268075. [2023-12-20 03:51:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268075 states, 268074 states have (on average 1.4218611278975208) internal successors, (381164), 268074 states have internal predecessors, (381164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268075 states to 268075 states and 381164 transitions. [2023-12-20 03:51:21,228 INFO L78 Accepts]: Start accepts. Automaton has 268075 states and 381164 transitions. Word has length 184 [2023-12-20 03:51:21,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:21,228 INFO L495 AbstractCegarLoop]: Abstraction has 268075 states and 381164 transitions. [2023-12-20 03:51:21,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.266666666666667) internal successors, (184), 14 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 268075 states and 381164 transitions. [2023-12-20 03:51:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-20 03:51:21,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:21,244 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] [2023-12-20 03:51:21,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-20 03:51:21,244 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:21,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:21,244 INFO L85 PathProgramCache]: Analyzing trace with hash 290597730, now seen corresponding path program 1 times [2023-12-20 03:51:21,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:21,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044888393] [2023-12-20 03:51:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:21,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:51:21,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:21,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044888393] [2023-12-20 03:51:21,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044888393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:21,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:21,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:51:21,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527453225] [2023-12-20 03:51:21,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:21,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:51:21,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:21,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:51:21,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:51:21,296 INFO L87 Difference]: Start difference. First operand 268075 states and 381164 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:22,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:22,971 INFO L93 Difference]: Finished difference Result 348951 states and 495491 transitions. [2023-12-20 03:51:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:51:22,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2023-12-20 03:51:22,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:23,411 INFO L225 Difference]: With dead ends: 348951 [2023-12-20 03:51:23,411 INFO L226 Difference]: Without dead ends: 264307 [2023-12-20 03:51:23,459 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 [2023-12-20 03:51:23,459 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 273 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:23,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 870 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:51:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264307 states. [2023-12-20 03:51:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264307 to 264156. [2023-12-20 03:51:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264156 states, 264155 states have (on average 1.4166190304934603) internal successors, (374207), 264155 states have internal predecessors, (374207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264156 states to 264156 states and 374207 transitions. [2023-12-20 03:51:27,559 INFO L78 Accepts]: Start accepts. Automaton has 264156 states and 374207 transitions. Word has length 185 [2023-12-20 03:51:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:27,559 INFO L495 AbstractCegarLoop]: Abstraction has 264156 states and 374207 transitions. [2023-12-20 03:51:27,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 264156 states and 374207 transitions. [2023-12-20 03:51:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-20 03:51:27,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:27,576 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] [2023-12-20 03:51:27,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-20 03:51:27,577 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:27,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1322140650, now seen corresponding path program 1 times [2023-12-20 03:51:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:27,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893182788] [2023-12-20 03:51:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:27,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:51:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893182788] [2023-12-20 03:51:27,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893182788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:27,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:27,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:51:27,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107989214] [2023-12-20 03:51:27,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:27,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:51:27,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:27,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:51:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:51:27,623 INFO L87 Difference]: Start difference. First operand 264156 states and 374207 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:28,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:28,933 INFO L93 Difference]: Finished difference Result 347389 states and 490166 transitions. [2023-12-20 03:51:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:51:28,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2023-12-20 03:51:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:29,425 INFO L225 Difference]: With dead ends: 347389 [2023-12-20 03:51:29,425 INFO L226 Difference]: Without dead ends: 264158 [2023-12-20 03:51:29,511 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 [2023-12-20 03:51:29,513 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 267 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:29,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 967 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:51:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264158 states. [2023-12-20 03:51:33,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264158 to 264156. [2023-12-20 03:51:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264156 states, 264155 states have (on average 1.4101909863527096) internal successors, (372509), 264155 states have internal predecessors, (372509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264156 states to 264156 states and 372509 transitions. [2023-12-20 03:51:34,311 INFO L78 Accepts]: Start accepts. Automaton has 264156 states and 372509 transitions. Word has length 185 [2023-12-20 03:51:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:34,311 INFO L495 AbstractCegarLoop]: Abstraction has 264156 states and 372509 transitions. [2023-12-20 03:51:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 264156 states and 372509 transitions. [2023-12-20 03:51:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-20 03:51:34,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:34,325 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] [2023-12-20 03:51:34,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-20 03:51:34,326 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:34,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1060907548, now seen corresponding path program 1 times [2023-12-20 03:51:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:34,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391020073] [2023-12-20 03:51:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:51:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391020073] [2023-12-20 03:51:34,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391020073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:34,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:34,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:51:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494614706] [2023-12-20 03:51:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:34,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:51:34,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:34,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:51:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:51:34,370 INFO L87 Difference]: Start difference. First operand 264156 states and 372509 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:35,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:35,991 INFO L93 Difference]: Finished difference Result 340626 states and 480250 transitions. [2023-12-20 03:51:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:51:35,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2023-12-20 03:51:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:36,500 INFO L225 Difference]: With dead ends: 340626 [2023-12-20 03:51:36,500 INFO L226 Difference]: Without dead ends: 258041 [2023-12-20 03:51:36,544 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 [2023-12-20 03:51:36,547 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 260 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:36,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 949 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:51:36,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258041 states. [2023-12-20 03:51:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258041 to 257956. [2023-12-20 03:51:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257956 states, 257955 states have (on average 1.4049000794712256) internal successors, (362401), 257955 states have internal predecessors, (362401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257956 states to 257956 states and 362401 transitions. [2023-12-20 03:51:40,649 INFO L78 Accepts]: Start accepts. Automaton has 257956 states and 362401 transitions. Word has length 185 [2023-12-20 03:51:40,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:40,649 INFO L495 AbstractCegarLoop]: Abstraction has 257956 states and 362401 transitions. [2023-12-20 03:51:40,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:40,649 INFO L276 IsEmpty]: Start isEmpty. Operand 257956 states and 362401 transitions. [2023-12-20 03:51:40,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-12-20 03:51:40,663 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:40,663 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] [2023-12-20 03:51:40,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-20 03:51:40,664 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:40,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1148760730, now seen corresponding path program 1 times [2023-12-20 03:51:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:40,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144862499] [2023-12-20 03:51:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:40,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:51:40,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144862499] [2023-12-20 03:51:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144862499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:51:40,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270314321] [2023-12-20 03:51:40,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:40,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:51:40,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:40,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:51:40,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:51:40,703 INFO L87 Difference]: Start difference. First operand 257956 states and 362401 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:41,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:41,934 INFO L93 Difference]: Finished difference Result 333399 states and 468196 transitions. [2023-12-20 03:51:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:51:41,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2023-12-20 03:51:41,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:42,386 INFO L225 Difference]: With dead ends: 333399 [2023-12-20 03:51:42,386 INFO L226 Difference]: Without dead ends: 255583 [2023-12-20 03:51:42,466 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 [2023-12-20 03:51:42,467 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 266 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:42,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1048 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:51:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255583 states. [2023-12-20 03:51:45,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255583 to 255581. [2023-12-20 03:51:45,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255581 states, 255580 states have (on average 1.398747945848658) internal successors, (357492), 255580 states have internal predecessors, (357492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255581 states to 255581 states and 357492 transitions. [2023-12-20 03:51:46,590 INFO L78 Accepts]: Start accepts. Automaton has 255581 states and 357492 transitions. Word has length 185 [2023-12-20 03:51:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:46,590 INFO L495 AbstractCegarLoop]: Abstraction has 255581 states and 357492 transitions. [2023-12-20 03:51:46,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 255581 states and 357492 transitions. [2023-12-20 03:51:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 03:51:46,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:46,605 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] [2023-12-20 03:51:46,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-20 03:51:46,605 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:46,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash 685646894, now seen corresponding path program 1 times [2023-12-20 03:51:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:46,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741239896] [2023-12-20 03:51:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:51:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:47,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741239896] [2023-12-20 03:51:47,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741239896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:47,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:47,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-20 03:51:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903623134] [2023-12-20 03:51:47,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:47,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:51:47,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:51:47,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:51:47,666 INFO L87 Difference]: Start difference. First operand 255581 states and 357492 transitions. Second operand has 19 states, 19 states have (on average 9.842105263157896) internal successors, (187), 18 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:51:50,352 INFO L93 Difference]: Finished difference Result 323828 states and 452954 transitions. [2023-12-20 03:51:50,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 03:51:50,353 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.842105263157896) internal successors, (187), 18 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-20 03:51:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:51:50,829 INFO L225 Difference]: With dead ends: 323828 [2023-12-20 03:51:50,829 INFO L226 Difference]: Without dead ends: 270215 [2023-12-20 03:51:50,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=334, Invalid=1226, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 03:51:50,895 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 3502 mSDsluCounter, 6347 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 6951 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:51:50,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3502 Valid, 6951 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 03:51:51,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270215 states. [2023-12-20 03:51:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270215 to 244516. [2023-12-20 03:51:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244516 states, 244515 states have (on average 1.3979755843199804) internal successors, (341826), 244515 states have internal predecessors, (341826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244516 states to 244516 states and 341826 transitions. [2023-12-20 03:51:55,438 INFO L78 Accepts]: Start accepts. Automaton has 244516 states and 341826 transitions. Word has length 187 [2023-12-20 03:51:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:51:55,438 INFO L495 AbstractCegarLoop]: Abstraction has 244516 states and 341826 transitions. [2023-12-20 03:51:55,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.842105263157896) internal successors, (187), 18 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:51:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 244516 states and 341826 transitions. [2023-12-20 03:51:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 03:51:55,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:51:55,456 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] [2023-12-20 03:51:55,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-20 03:51:55,457 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:51:55,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:51:55,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1500371822, now seen corresponding path program 1 times [2023-12-20 03:51:55,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:51:55,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763280559] [2023-12-20 03:51:55,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:51:55,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:51:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:51:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:51:57,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:51:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763280559] [2023-12-20 03:51:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763280559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:51:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:51:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-20 03:51:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256015039] [2023-12-20 03:51:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:51:57,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:51:57,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:51:57,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:51:57,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:51:57,873 INFO L87 Difference]: Start difference. First operand 244516 states and 341826 transitions. Second operand has 21 states, 21 states have (on average 8.904761904761905) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:01,943 INFO L93 Difference]: Finished difference Result 343505 states and 481879 transitions. [2023-12-20 03:52:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 03:52:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.904761904761905) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-20 03:52:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:02,558 INFO L225 Difference]: With dead ends: 343505 [2023-12-20 03:52:02,558 INFO L226 Difference]: Without dead ends: 293520 [2023-12-20 03:52:02,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=314, Invalid=1092, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 03:52:02,672 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 2638 mSDsluCounter, 9871 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 10732 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:02,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2638 Valid, 10732 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 03:52:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293520 states. [2023-12-20 03:52:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293520 to 222333. [2023-12-20 03:52:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222333 states, 222332 states have (on average 1.3955570947951712) internal successors, (310277), 222332 states have internal predecessors, (310277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222333 states to 222333 states and 310277 transitions. [2023-12-20 03:52:06,918 INFO L78 Accepts]: Start accepts. Automaton has 222333 states and 310277 transitions. Word has length 187 [2023-12-20 03:52:06,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:06,918 INFO L495 AbstractCegarLoop]: Abstraction has 222333 states and 310277 transitions. [2023-12-20 03:52:06,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.904761904761905) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 222333 states and 310277 transitions. [2023-12-20 03:52:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 03:52:06,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:06,935 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] [2023-12-20 03:52:06,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-20 03:52:06,936 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:06,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash -513969468, now seen corresponding path program 1 times [2023-12-20 03:52:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:06,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454790356] [2023-12-20 03:52:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:52:08,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:08,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454790356] [2023-12-20 03:52:08,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454790356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:08,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:08,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-20 03:52:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637461285] [2023-12-20 03:52:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:08,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:52:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:08,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:52:08,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:52:08,431 INFO L87 Difference]: Start difference. First operand 222333 states and 310277 transitions. Second operand has 21 states, 21 states have (on average 8.904761904761905) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:12,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:12,007 INFO L93 Difference]: Finished difference Result 252918 states and 352771 transitions. [2023-12-20 03:52:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 03:52:12,007 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.904761904761905) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-20 03:52:12,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:12,368 INFO L225 Difference]: With dead ends: 252918 [2023-12-20 03:52:12,368 INFO L226 Difference]: Without dead ends: 217095 [2023-12-20 03:52:12,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 03:52:12,401 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1663 mSDsluCounter, 8191 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 8808 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:12,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 8808 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2873 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 03:52:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217095 states. [2023-12-20 03:52:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217095 to 217064. [2023-12-20 03:52:14,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217064 states, 217063 states have (on average 1.3949867089278227) internal successors, (302800), 217063 states have internal predecessors, (302800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217064 states to 217064 states and 302800 transitions. [2023-12-20 03:52:15,803 INFO L78 Accepts]: Start accepts. Automaton has 217064 states and 302800 transitions. Word has length 187 [2023-12-20 03:52:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:15,803 INFO L495 AbstractCegarLoop]: Abstraction has 217064 states and 302800 transitions. [2023-12-20 03:52:15,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.904761904761905) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:15,804 INFO L276 IsEmpty]: Start isEmpty. Operand 217064 states and 302800 transitions. [2023-12-20 03:52:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 03:52:15,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:15,817 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] [2023-12-20 03:52:15,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-20 03:52:15,818 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:15,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash 528981949, now seen corresponding path program 1 times [2023-12-20 03:52:15,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:15,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562005689] [2023-12-20 03:52:15,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:15,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:52:16,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:16,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562005689] [2023-12-20 03:52:16,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562005689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:16,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:16,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-20 03:52:16,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352995524] [2023-12-20 03:52:16,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:16,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 03:52:16,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:16,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 03:52:16,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-12-20 03:52:16,837 INFO L87 Difference]: Start difference. First operand 217064 states and 302800 transitions. Second operand has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 14 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:19,231 INFO L93 Difference]: Finished difference Result 311234 states and 435507 transitions. [2023-12-20 03:52:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:52:19,232 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 14 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-20 03:52:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:19,673 INFO L225 Difference]: With dead ends: 311234 [2023-12-20 03:52:19,673 INFO L226 Difference]: Without dead ends: 234979 [2023-12-20 03:52:19,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:52:19,709 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 2960 mSDsluCounter, 5345 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 6014 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:19,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2960 Valid, 6014 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 03:52:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234979 states. [2023-12-20 03:52:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234979 to 201391. [2023-12-20 03:52:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201391 states, 201390 states have (on average 1.396146779879835) internal successors, (281170), 201390 states have internal predecessors, (281170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201391 states to 201391 states and 281170 transitions. [2023-12-20 03:52:23,109 INFO L78 Accepts]: Start accepts. Automaton has 201391 states and 281170 transitions. Word has length 187 [2023-12-20 03:52:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:23,109 INFO L495 AbstractCegarLoop]: Abstraction has 201391 states and 281170 transitions. [2023-12-20 03:52:23,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.466666666666667) internal successors, (187), 14 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 201391 states and 281170 transitions. [2023-12-20 03:52:23,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 03:52:23,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:23,124 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] [2023-12-20 03:52:23,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-20 03:52:23,125 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:23,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2143890150, now seen corresponding path program 1 times [2023-12-20 03:52:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:23,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048936286] [2023-12-20 03:52:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:23,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:52:24,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:24,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048936286] [2023-12-20 03:52:24,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048936286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:24,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:24,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-20 03:52:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040102825] [2023-12-20 03:52:24,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:24,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:52:24,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:24,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:52:24,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:52:24,446 INFO L87 Difference]: Start difference. First operand 201391 states and 281170 transitions. Second operand has 21 states, 21 states have (on average 8.904761904761905) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:27,912 INFO L93 Difference]: Finished difference Result 245589 states and 342297 transitions. [2023-12-20 03:52:27,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 03:52:27,913 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.904761904761905) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-20 03:52:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:28,263 INFO L225 Difference]: With dead ends: 245589 [2023-12-20 03:52:28,263 INFO L226 Difference]: Without dead ends: 205159 [2023-12-20 03:52:28,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=1033, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 03:52:28,340 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 2768 mSDsluCounter, 8091 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2768 SdHoareTripleChecker+Valid, 8731 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:28,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2768 Valid, 8731 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 03:52:28,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205159 states. [2023-12-20 03:52:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205159 to 189958. [2023-12-20 03:52:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189958 states, 189957 states have (on average 1.3958895960664781) internal successors, (265159), 189957 states have internal predecessors, (265159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189958 states to 189958 states and 265159 transitions. [2023-12-20 03:52:31,943 INFO L78 Accepts]: Start accepts. Automaton has 189958 states and 265159 transitions. Word has length 187 [2023-12-20 03:52:31,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:31,943 INFO L495 AbstractCegarLoop]: Abstraction has 189958 states and 265159 transitions. [2023-12-20 03:52:31,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.904761904761905) internal successors, (187), 20 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:31,944 INFO L276 IsEmpty]: Start isEmpty. Operand 189958 states and 265159 transitions. [2023-12-20 03:52:31,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 03:52:31,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:31,958 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] [2023-12-20 03:52:31,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-20 03:52:31,958 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:31,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:31,959 INFO L85 PathProgramCache]: Analyzing trace with hash -873468385, now seen corresponding path program 1 times [2023-12-20 03:52:31,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:31,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182374886] [2023-12-20 03:52:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:52:32,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:32,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182374886] [2023-12-20 03:52:32,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182374886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:32,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:32,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-20 03:52:32,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602927987] [2023-12-20 03:52:32,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:32,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:52:32,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:32,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:52:32,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:52:32,917 INFO L87 Difference]: Start difference. First operand 189958 states and 265159 transitions. Second operand has 19 states, 19 states have (on average 9.842105263157896) internal successors, (187), 18 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:35,544 INFO L93 Difference]: Finished difference Result 213996 states and 298823 transitions. [2023-12-20 03:52:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 03:52:35,545 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.842105263157896) internal successors, (187), 18 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-20 03:52:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:36,035 INFO L225 Difference]: With dead ends: 213996 [2023-12-20 03:52:36,036 INFO L226 Difference]: Without dead ends: 166673 [2023-12-20 03:52:36,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=421, Invalid=1835, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 03:52:36,094 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 3039 mSDsluCounter, 8397 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 9192 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:36,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 9192 Invalid, 2638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 03:52:36,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166673 states. [2023-12-20 03:52:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166673 to 166666. [2023-12-20 03:52:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166666 states, 166665 states have (on average 1.3917679176791768) internal successors, (231959), 166665 states have internal predecessors, (231959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166666 states to 166666 states and 231959 transitions. [2023-12-20 03:52:38,145 INFO L78 Accepts]: Start accepts. Automaton has 166666 states and 231959 transitions. Word has length 187 [2023-12-20 03:52:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:38,146 INFO L495 AbstractCegarLoop]: Abstraction has 166666 states and 231959 transitions. [2023-12-20 03:52:38,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.842105263157896) internal successors, (187), 18 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 166666 states and 231959 transitions. [2023-12-20 03:52:38,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-20 03:52:38,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:38,158 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] [2023-12-20 03:52:38,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-20 03:52:38,159 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:38,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:38,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1012833471, now seen corresponding path program 1 times [2023-12-20 03:52:38,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:38,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264115158] [2023-12-20 03:52:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:38,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:52:39,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:39,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264115158] [2023-12-20 03:52:39,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264115158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:39,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:39,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-20 03:52:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527157946] [2023-12-20 03:52:39,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:39,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 03:52:39,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:39,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 03:52:39,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2023-12-20 03:52:39,287 INFO L87 Difference]: Start difference. First operand 166666 states and 231959 transitions. Second operand has 20 states, 20 states have (on average 9.35) internal successors, (187), 19 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:41,779 INFO L93 Difference]: Finished difference Result 238115 states and 332903 transitions. [2023-12-20 03:52:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 03:52:41,780 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.35) internal successors, (187), 19 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-20 03:52:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:42,141 INFO L225 Difference]: With dead ends: 238115 [2023-12-20 03:52:42,141 INFO L226 Difference]: Without dead ends: 205607 [2023-12-20 03:52:42,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 03:52:42,191 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 2177 mSDsluCounter, 10632 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 11484 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:42,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2177 Valid, 11484 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 03:52:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205607 states. [2023-12-20 03:52:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205607 to 162540. [2023-12-20 03:52:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162540 states, 162539 states have (on average 1.3896664800447893) internal successors, (225875), 162539 states have internal predecessors, (225875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162540 states to 162540 states and 225875 transitions. [2023-12-20 03:52:44,953 INFO L78 Accepts]: Start accepts. Automaton has 162540 states and 225875 transitions. Word has length 187 [2023-12-20 03:52:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:44,954 INFO L495 AbstractCegarLoop]: Abstraction has 162540 states and 225875 transitions. [2023-12-20 03:52:44,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.35) internal successors, (187), 19 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:44,954 INFO L276 IsEmpty]: Start isEmpty. Operand 162540 states and 225875 transitions. [2023-12-20 03:52:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 03:52:44,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:44,967 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] [2023-12-20 03:52:44,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-20 03:52:44,967 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:44,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash 26987824, now seen corresponding path program 1 times [2023-12-20 03:52:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:44,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955261636] [2023-12-20 03:52:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:44,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:52:45,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:45,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955261636] [2023-12-20 03:52:45,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955261636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:45,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:45,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:52:45,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51374607] [2023-12-20 03:52:45,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:45,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:52:45,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:52:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:52:45,079 INFO L87 Difference]: Start difference. First operand 162540 states and 225875 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:46,161 INFO L93 Difference]: Finished difference Result 264836 states and 370985 transitions. [2023-12-20 03:52:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:52:46,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-12-20 03:52:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:46,524 INFO L225 Difference]: With dead ends: 264836 [2023-12-20 03:52:46,525 INFO L226 Difference]: Without dead ends: 206474 [2023-12-20 03:52:46,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:52:46,608 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 872 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:46,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1488 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:52:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206474 states. [2023-12-20 03:52:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206474 to 162638. [2023-12-20 03:52:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162638 states, 162637 states have (on average 1.3844512626278154) internal successors, (225163), 162637 states have internal predecessors, (225163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162638 states to 162638 states and 225163 transitions. [2023-12-20 03:52:49,219 INFO L78 Accepts]: Start accepts. Automaton has 162638 states and 225163 transitions. Word has length 188 [2023-12-20 03:52:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:49,219 INFO L495 AbstractCegarLoop]: Abstraction has 162638 states and 225163 transitions. [2023-12-20 03:52:49,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 162638 states and 225163 transitions. [2023-12-20 03:52:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 03:52:49,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:49,574 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] [2023-12-20 03:52:49,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-20 03:52:49,575 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:49,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1687072328, now seen corresponding path program 1 times [2023-12-20 03:52:49,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:49,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491082237] [2023-12-20 03:52:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:49,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:52:49,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:49,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491082237] [2023-12-20 03:52:49,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491082237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:49,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:49,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:52:49,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698749406] [2023-12-20 03:52:49,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:49,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:52:49,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:49,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:52:49,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:52:49,765 INFO L87 Difference]: Start difference. First operand 162638 states and 225163 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:50,830 INFO L93 Difference]: Finished difference Result 239098 states and 333599 transitions. [2023-12-20 03:52:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:52:50,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-12-20 03:52:50,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:51,159 INFO L225 Difference]: With dead ends: 239098 [2023-12-20 03:52:51,160 INFO L226 Difference]: Without dead ends: 180804 [2023-12-20 03:52:51,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:52:51,250 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 874 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:51,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1420 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:52:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180804 states. [2023-12-20 03:52:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180804 to 148194. [2023-12-20 03:52:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148194 states, 148193 states have (on average 1.3779800665348565) internal successors, (204207), 148193 states have internal predecessors, (204207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148194 states to 148194 states and 204207 transitions. [2023-12-20 03:52:53,349 INFO L78 Accepts]: Start accepts. Automaton has 148194 states and 204207 transitions. Word has length 188 [2023-12-20 03:52:53,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:52:53,350 INFO L495 AbstractCegarLoop]: Abstraction has 148194 states and 204207 transitions. [2023-12-20 03:52:53,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:53,350 INFO L276 IsEmpty]: Start isEmpty. Operand 148194 states and 204207 transitions. [2023-12-20 03:52:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 03:52:53,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:52:53,363 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] [2023-12-20 03:52:53,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-20 03:52:53,363 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:52:53,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:52:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash 619962810, now seen corresponding path program 1 times [2023-12-20 03:52:53,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:52:53,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468975843] [2023-12-20 03:52:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:52:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:52:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:52:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:52:53,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:52:53,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468975843] [2023-12-20 03:52:53,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468975843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:52:53,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:52:53,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:52:53,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82089452] [2023-12-20 03:52:53,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:52:53,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:52:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:52:53,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:52:53,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:52:53,943 INFO L87 Difference]: Start difference. First operand 148194 states and 204207 transitions. Second operand has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:52:55,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:52:55,546 INFO L93 Difference]: Finished difference Result 415892 states and 574452 transitions. [2023-12-20 03:52:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 03:52:55,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-12-20 03:52:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:52:56,169 INFO L225 Difference]: With dead ends: 415892 [2023-12-20 03:52:56,169 INFO L226 Difference]: Without dead ends: 334496 [2023-12-20 03:52:56,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:52:56,265 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 3581 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:52:56,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3581 Valid, 1137 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:52:56,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334496 states. [2023-12-20 03:52:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334496 to 164057. [2023-12-20 03:52:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164057 states, 164056 states have (on average 1.3876237382357244) internal successors, (227648), 164056 states have internal predecessors, (227648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:00,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164057 states to 164057 states and 227648 transitions. [2023-12-20 03:53:00,314 INFO L78 Accepts]: Start accepts. Automaton has 164057 states and 227648 transitions. Word has length 188 [2023-12-20 03:53:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:53:00,315 INFO L495 AbstractCegarLoop]: Abstraction has 164057 states and 227648 transitions. [2023-12-20 03:53:00,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 164057 states and 227648 transitions. [2023-12-20 03:53:00,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 03:53:00,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:53:00,333 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] [2023-12-20 03:53:00,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-20 03:53:00,333 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:53:00,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:53:00,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1124823333, now seen corresponding path program 1 times [2023-12-20 03:53:00,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:53:00,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495555538] [2023-12-20 03:53:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:53:00,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:53:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:53:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:53:00,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:53:00,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495555538] [2023-12-20 03:53:00,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495555538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:53:00,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:53:00,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:53:00,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311670575] [2023-12-20 03:53:00,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:53:00,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:53:00,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:53:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:53:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:53:00,506 INFO L87 Difference]: Start difference. First operand 164057 states and 227648 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:53:01,714 INFO L93 Difference]: Finished difference Result 234017 states and 327172 transitions. [2023-12-20 03:53:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:53:01,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-12-20 03:53:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:53:02,155 INFO L225 Difference]: With dead ends: 234017 [2023-12-20 03:53:02,156 INFO L226 Difference]: Without dead ends: 168917 [2023-12-20 03:53:02,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:53:02,236 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 865 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:53:02,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1312 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:53:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168917 states. [2023-12-20 03:53:04,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168917 to 131517. [2023-12-20 03:53:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131517 states, 131516 states have (on average 1.3717874631223577) internal successors, (180412), 131516 states have internal predecessors, (180412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131517 states to 131517 states and 180412 transitions. [2023-12-20 03:53:04,367 INFO L78 Accepts]: Start accepts. Automaton has 131517 states and 180412 transitions. Word has length 188 [2023-12-20 03:53:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:53:04,368 INFO L495 AbstractCegarLoop]: Abstraction has 131517 states and 180412 transitions. [2023-12-20 03:53:04,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 131517 states and 180412 transitions. [2023-12-20 03:53:04,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 03:53:04,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:53:04,381 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] [2023-12-20 03:53:04,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-20 03:53:04,382 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:53:04,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:53:04,382 INFO L85 PathProgramCache]: Analyzing trace with hash 93887502, now seen corresponding path program 1 times [2023-12-20 03:53:04,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:53:04,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21595431] [2023-12-20 03:53:04,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:53:04,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:53:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:53:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:53:04,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:53:04,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21595431] [2023-12-20 03:53:04,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21595431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:53:04,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:53:04,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:53:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108671808] [2023-12-20 03:53:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:53:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:53:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:53:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:53:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:53:04,431 INFO L87 Difference]: Start difference. First operand 131517 states and 180412 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:05,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:53:05,177 INFO L93 Difference]: Finished difference Result 176304 states and 243537 transitions. [2023-12-20 03:53:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:53:05,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-12-20 03:53:05,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:53:05,356 INFO L225 Difference]: With dead ends: 176304 [2023-12-20 03:53:05,357 INFO L226 Difference]: Without dead ends: 131529 [2023-12-20 03:53:05,417 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 [2023-12-20 03:53:05,418 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 225 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:53:05,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 921 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:53:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131529 states. [2023-12-20 03:53:07,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131529 to 131481. [2023-12-20 03:53:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131481 states, 131480 states have (on average 1.3704365682993611) internal successors, (180185), 131480 states have internal predecessors, (180185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131481 states to 131481 states and 180185 transitions. [2023-12-20 03:53:07,340 INFO L78 Accepts]: Start accepts. Automaton has 131481 states and 180185 transitions. Word has length 188 [2023-12-20 03:53:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:53:07,341 INFO L495 AbstractCegarLoop]: Abstraction has 131481 states and 180185 transitions. [2023-12-20 03:53:07,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 131481 states and 180185 transitions. [2023-12-20 03:53:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 03:53:07,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:53:07,353 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] [2023-12-20 03:53:07,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-20 03:53:07,353 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:53:07,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:53:07,354 INFO L85 PathProgramCache]: Analyzing trace with hash 669397933, now seen corresponding path program 1 times [2023-12-20 03:53:07,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:53:07,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983460602] [2023-12-20 03:53:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:53:07,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:53:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:53:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:53:07,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:53:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983460602] [2023-12-20 03:53:07,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983460602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:53:07,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:53:07,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:53:07,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916391869] [2023-12-20 03:53:07,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:53:07,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:53:07,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:53:07,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:53:07,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:53:07,478 INFO L87 Difference]: Start difference. First operand 131481 states and 180185 transitions. Second operand has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:09,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:53:09,397 INFO L93 Difference]: Finished difference Result 405304 states and 554744 transitions. [2023-12-20 03:53:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 03:53:09,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-12-20 03:53:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:53:10,011 INFO L225 Difference]: With dead ends: 405304 [2023-12-20 03:53:10,011 INFO L226 Difference]: Without dead ends: 341136 [2023-12-20 03:53:10,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:53:10,094 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 3825 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:53:10,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3825 Valid, 1270 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 03:53:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341136 states. [2023-12-20 03:53:13,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341136 to 183394. [2023-12-20 03:53:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183394 states, 183393 states have (on average 1.366982382097463) internal successors, (250695), 183393 states have internal predecessors, (250695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183394 states to 183394 states and 250695 transitions. [2023-12-20 03:53:13,871 INFO L78 Accepts]: Start accepts. Automaton has 183394 states and 250695 transitions. Word has length 188 [2023-12-20 03:53:13,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:53:13,871 INFO L495 AbstractCegarLoop]: Abstraction has 183394 states and 250695 transitions. [2023-12-20 03:53:13,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 183394 states and 250695 transitions. [2023-12-20 03:53:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 03:53:13,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:53:13,889 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] [2023-12-20 03:53:13,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-20 03:53:13,890 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:53:13,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:53:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash 666130601, now seen corresponding path program 1 times [2023-12-20 03:53:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:53:13,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941259478] [2023-12-20 03:53:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:53:13,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:53:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:53:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:53:14,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:53:14,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941259478] [2023-12-20 03:53:14,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941259478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:53:14,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:53:14,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:53:14,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763243528] [2023-12-20 03:53:14,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:53:14,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:53:14,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:53:14,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:53:14,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:53:14,005 INFO L87 Difference]: Start difference. First operand 183394 states and 250695 transitions. Second operand has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:53:15,582 INFO L93 Difference]: Finished difference Result 434808 states and 591889 transitions. [2023-12-20 03:53:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 03:53:15,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-12-20 03:53:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:53:16,592 INFO L225 Difference]: With dead ends: 434808 [2023-12-20 03:53:16,592 INFO L226 Difference]: Without dead ends: 343873 [2023-12-20 03:53:16,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:53:16,655 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 4626 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4626 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:53:16,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4626 Valid, 1213 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:53:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343873 states. [2023-12-20 03:53:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343873 to 263697. [2023-12-20 03:53:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263697 states, 263696 states have (on average 1.3526143741277834) internal successors, (356679), 263696 states have internal predecessors, (356679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263697 states to 263697 states and 356679 transitions. [2023-12-20 03:53:21,020 INFO L78 Accepts]: Start accepts. Automaton has 263697 states and 356679 transitions. Word has length 188 [2023-12-20 03:53:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:53:21,020 INFO L495 AbstractCegarLoop]: Abstraction has 263697 states and 356679 transitions. [2023-12-20 03:53:21,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 263697 states and 356679 transitions. [2023-12-20 03:53:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 03:53:21,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:53:21,035 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] [2023-12-20 03:53:21,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-20 03:53:21,035 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:53:21,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:53:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash 543330808, now seen corresponding path program 1 times [2023-12-20 03:53:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:53:21,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078244924] [2023-12-20 03:53:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:53:21,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:53:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:53:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:53:21,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:53:21,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078244924] [2023-12-20 03:53:21,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078244924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:53:21,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:53:21,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:53:21,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943061289] [2023-12-20 03:53:21,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:53:21,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:53:21,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:53:21,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:53:21,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:53:21,167 INFO L87 Difference]: Start difference. First operand 263697 states and 356679 transitions. Second operand has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:24,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:53:24,829 INFO L93 Difference]: Finished difference Result 567370 states and 764511 transitions. [2023-12-20 03:53:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 03:53:24,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-12-20 03:53:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:53:26,360 INFO L225 Difference]: With dead ends: 567370 [2023-12-20 03:53:26,360 INFO L226 Difference]: Without dead ends: 441093 [2023-12-20 03:53:26,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:53:26,505 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 3050 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:53:26,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 1331 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 03:53:27,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441093 states. [2023-12-20 03:53:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441093 to 297226. [2023-12-20 03:53:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297226 states, 297225 states have (on average 1.3581899234586592) internal successors, (403688), 297225 states have internal predecessors, (403688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297226 states to 297226 states and 403688 transitions. [2023-12-20 03:53:32,446 INFO L78 Accepts]: Start accepts. Automaton has 297226 states and 403688 transitions. Word has length 188 [2023-12-20 03:53:32,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:53:32,446 INFO L495 AbstractCegarLoop]: Abstraction has 297226 states and 403688 transitions. [2023-12-20 03:53:32,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.5) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 297226 states and 403688 transitions. [2023-12-20 03:53:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-20 03:53:32,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:53:32,462 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] [2023-12-20 03:53:32,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-20 03:53:32,462 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:53:32,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:53:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1049251962, now seen corresponding path program 1 times [2023-12-20 03:53:32,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:53:32,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629265985] [2023-12-20 03:53:32,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:53:32,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:53:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:53:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:53:32,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:53:32,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629265985] [2023-12-20 03:53:32,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629265985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:53:32,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:53:32,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:53:32,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745935162] [2023-12-20 03:53:32,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:53:32,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:53:32,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:53:32,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:53:32,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:53:32,532 INFO L87 Difference]: Start difference. First operand 297226 states and 403688 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:53:34,943 INFO L93 Difference]: Finished difference Result 634640 states and 870725 transitions. [2023-12-20 03:53:34,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:53:34,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-20 03:53:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:53:35,714 INFO L225 Difference]: With dead ends: 634640 [2023-12-20 03:53:35,714 INFO L226 Difference]: Without dead ends: 359698 [2023-12-20 03:53:36,336 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 [2023-12-20 03:53:36,336 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 116 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:53:36,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 744 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:53:36,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359698 states. [2023-12-20 03:53:40,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359698 to 359696. [2023-12-20 03:53:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359696 states, 359695 states have (on average 1.3480976938795368) internal successors, (484904), 359695 states have internal predecessors, (484904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359696 states to 359696 states and 484904 transitions. [2023-12-20 03:53:41,593 INFO L78 Accepts]: Start accepts. Automaton has 359696 states and 484904 transitions. Word has length 190 [2023-12-20 03:53:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:53:41,594 INFO L495 AbstractCegarLoop]: Abstraction has 359696 states and 484904 transitions. [2023-12-20 03:53:41,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 359696 states and 484904 transitions. [2023-12-20 03:53:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-20 03:53:41,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:53:41,609 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] [2023-12-20 03:53:41,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-20 03:53:41,609 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:53:41,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:53:41,609 INFO L85 PathProgramCache]: Analyzing trace with hash -744815971, now seen corresponding path program 1 times [2023-12-20 03:53:41,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:53:41,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913052391] [2023-12-20 03:53:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:53:41,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:53:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:53:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:53:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:53:42,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913052391] [2023-12-20 03:53:42,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913052391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:53:42,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:53:42,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-20 03:53:42,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602644605] [2023-12-20 03:53:42,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:53:42,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 03:53:42,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:53:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 03:53:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2023-12-20 03:53:42,690 INFO L87 Difference]: Start difference. First operand 359696 states and 484904 transitions. Second operand has 20 states, 20 states have (on average 9.5) internal successors, (190), 19 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:53:46,161 INFO L93 Difference]: Finished difference Result 397141 states and 535093 transitions. [2023-12-20 03:53:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-20 03:53:46,172 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.5) internal successors, (190), 19 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-20 03:53:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:53:46,868 INFO L225 Difference]: With dead ends: 397141 [2023-12-20 03:53:46,868 INFO L226 Difference]: Without dead ends: 362294 [2023-12-20 03:53:46,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=428, Invalid=1642, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 03:53:46,975 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 2873 mSDsluCounter, 8215 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 8849 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:53:46,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2873 Valid, 8849 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 03:53:47,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362294 states. [2023-12-20 03:53:51,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362294 to 360078. [2023-12-20 03:53:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360078 states, 360077 states have (on average 1.3477533971900455) internal successors, (485295), 360077 states have internal predecessors, (485295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360078 states to 360078 states and 485295 transitions. [2023-12-20 03:53:53,138 INFO L78 Accepts]: Start accepts. Automaton has 360078 states and 485295 transitions. Word has length 190 [2023-12-20 03:53:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:53:53,138 INFO L495 AbstractCegarLoop]: Abstraction has 360078 states and 485295 transitions. [2023-12-20 03:53:53,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.5) internal successors, (190), 19 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:53:53,139 INFO L276 IsEmpty]: Start isEmpty. Operand 360078 states and 485295 transitions. [2023-12-20 03:53:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-20 03:53:53,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:53:53,161 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] [2023-12-20 03:53:53,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-20 03:53:53,161 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:53:53,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:53:53,161 INFO L85 PathProgramCache]: Analyzing trace with hash 309006109, now seen corresponding path program 1 times [2023-12-20 03:53:53,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:53:53,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493184724] [2023-12-20 03:53:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:53:53,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:53:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:53:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:53:55,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:53:55,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493184724] [2023-12-20 03:53:55,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493184724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:53:55,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:53:55,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-20 03:53:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908570212] [2023-12-20 03:53:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:53:55,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 03:53:55,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:53:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 03:53:55,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-12-20 03:53:55,434 INFO L87 Difference]: Start difference. First operand 360078 states and 485295 transitions. Second operand has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 21 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:02,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:54:02,023 INFO L93 Difference]: Finished difference Result 396881 states and 534000 transitions. [2023-12-20 03:54:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-20 03:54:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 21 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-20 03:54:02,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:54:02,710 INFO L225 Difference]: With dead ends: 396881 [2023-12-20 03:54:02,711 INFO L226 Difference]: Without dead ends: 364383 [2023-12-20 03:54:02,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 03:54:02,805 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 2276 mSDsluCounter, 8271 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 8928 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:54:02,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 8928 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 03:54:03,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364383 states. [2023-12-20 03:54:07,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364383 to 345113. [2023-12-20 03:54:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345113 states, 345112 states have (on average 1.345273418484434) internal successors, (464270), 345112 states have internal predecessors, (464270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345113 states to 345113 states and 464270 transitions. [2023-12-20 03:54:09,668 INFO L78 Accepts]: Start accepts. Automaton has 345113 states and 464270 transitions. Word has length 190 [2023-12-20 03:54:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:54:09,668 INFO L495 AbstractCegarLoop]: Abstraction has 345113 states and 464270 transitions. [2023-12-20 03:54:09,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 21 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 345113 states and 464270 transitions. [2023-12-20 03:54:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-20 03:54:09,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:54:09,687 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] [2023-12-20 03:54:09,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-20 03:54:09,687 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:54:09,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:54:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2018898677, now seen corresponding path program 1 times [2023-12-20 03:54:09,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:54:09,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256418837] [2023-12-20 03:54:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:54:09,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:54:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:54:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:54:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:54:11,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256418837] [2023-12-20 03:54:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256418837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:54:11,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:54:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-20 03:54:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318983373] [2023-12-20 03:54:11,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:54:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 03:54:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:54:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 03:54:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2023-12-20 03:54:11,806 INFO L87 Difference]: Start difference. First operand 345113 states and 464270 transitions. Second operand has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 21 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:54:16,848 INFO L93 Difference]: Finished difference Result 398531 states and 538736 transitions. [2023-12-20 03:54:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 03:54:16,860 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 21 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-20 03:54:16,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:54:17,598 INFO L225 Difference]: With dead ends: 398531 [2023-12-20 03:54:17,598 INFO L226 Difference]: Without dead ends: 346085 [2023-12-20 03:54:17,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=491, Invalid=1861, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 03:54:17,704 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 2801 mSDsluCounter, 13272 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 14190 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:54:17,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2801 Valid, 14190 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 03:54:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346085 states. [2023-12-20 03:54:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346085 to 345625. [2023-12-20 03:54:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345625 states, 345624 states have (on average 1.344895030437701) internal successors, (464828), 345624 states have internal predecessors, (464828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345625 states to 345625 states and 464828 transitions. [2023-12-20 03:54:23,901 INFO L78 Accepts]: Start accepts. Automaton has 345625 states and 464828 transitions. Word has length 190 [2023-12-20 03:54:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:54:23,901 INFO L495 AbstractCegarLoop]: Abstraction has 345625 states and 464828 transitions. [2023-12-20 03:54:23,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 21 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 345625 states and 464828 transitions. [2023-12-20 03:54:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-20 03:54:23,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:54:23,927 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] [2023-12-20 03:54:23,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-20 03:54:23,927 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:54:23,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:54:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1881497866, now seen corresponding path program 1 times [2023-12-20 03:54:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:54:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320197201] [2023-12-20 03:54:23,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:54:23,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:54:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:54:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:54:25,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:54:25,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320197201] [2023-12-20 03:54:25,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320197201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:54:25,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:54:25,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-20 03:54:25,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906866886] [2023-12-20 03:54:25,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:54:25,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:54:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:54:25,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:54:25,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:54:25,776 INFO L87 Difference]: Start difference. First operand 345625 states and 464828 transitions. Second operand has 21 states, 21 states have (on average 9.047619047619047) internal successors, (190), 20 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:54:30,707 INFO L93 Difference]: Finished difference Result 397280 states and 534533 transitions. [2023-12-20 03:54:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-20 03:54:30,707 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.047619047619047) internal successors, (190), 20 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-20 03:54:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:54:31,315 INFO L225 Difference]: With dead ends: 397280 [2023-12-20 03:54:31,315 INFO L226 Difference]: Without dead ends: 313047 [2023-12-20 03:54:32,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=698, Invalid=3334, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 03:54:32,042 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 2629 mSDsluCounter, 13010 mSDsCounter, 0 mSdLazyCounter, 3776 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2629 SdHoareTripleChecker+Valid, 13901 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:54:32,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2629 Valid, 13901 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3776 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 03:54:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313047 states. [2023-12-20 03:54:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313047 to 312664. [2023-12-20 03:54:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312664 states, 312663 states have (on average 1.3368578949220087) internal successors, (417986), 312663 states have internal predecessors, (417986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312664 states to 312664 states and 417986 transitions. [2023-12-20 03:54:36,756 INFO L78 Accepts]: Start accepts. Automaton has 312664 states and 417986 transitions. Word has length 190 [2023-12-20 03:54:36,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:54:36,756 INFO L495 AbstractCegarLoop]: Abstraction has 312664 states and 417986 transitions. [2023-12-20 03:54:36,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.047619047619047) internal successors, (190), 20 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 312664 states and 417986 transitions. [2023-12-20 03:54:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-20 03:54:36,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:54:36,774 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] [2023-12-20 03:54:36,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-20 03:54:36,774 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:54:36,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:54:36,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1674044151, now seen corresponding path program 1 times [2023-12-20 03:54:36,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:54:36,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568342585] [2023-12-20 03:54:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:54:36,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:54:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:54:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:54:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:54:38,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568342585] [2023-12-20 03:54:38,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568342585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:54:38,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:54:38,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-20 03:54:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317499106] [2023-12-20 03:54:38,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:54:38,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 03:54:38,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:54:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 03:54:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2023-12-20 03:54:38,465 INFO L87 Difference]: Start difference. First operand 312664 states and 417986 transitions. Second operand has 23 states, 23 states have (on average 8.26086956521739) internal successors, (190), 22 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:43,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:54:43,562 INFO L93 Difference]: Finished difference Result 403990 states and 541746 transitions. [2023-12-20 03:54:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 03:54:43,563 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.26086956521739) internal successors, (190), 22 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-20 03:54:43,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:54:44,124 INFO L225 Difference]: With dead ends: 403990 [2023-12-20 03:54:44,125 INFO L226 Difference]: Without dead ends: 314002 [2023-12-20 03:54:44,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=647, Invalid=2323, Unknown=0, NotChecked=0, Total=2970 [2023-12-20 03:54:44,207 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 3819 mSDsluCounter, 9271 mSDsCounter, 0 mSdLazyCounter, 3093 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 9981 SdHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:54:44,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3819 Valid, 9981 Invalid, 3126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3093 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 03:54:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314002 states. [2023-12-20 03:54:47,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314002 to 313666. [2023-12-20 03:54:47,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313666 states, 313665 states have (on average 1.3359316468206526) internal successors, (419035), 313665 states have internal predecessors, (419035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313666 states to 313666 states and 419035 transitions. [2023-12-20 03:54:49,399 INFO L78 Accepts]: Start accepts. Automaton has 313666 states and 419035 transitions. Word has length 190 [2023-12-20 03:54:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:54:49,400 INFO L495 AbstractCegarLoop]: Abstraction has 313666 states and 419035 transitions. [2023-12-20 03:54:49,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.26086956521739) internal successors, (190), 22 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:49,400 INFO L276 IsEmpty]: Start isEmpty. Operand 313666 states and 419035 transitions. [2023-12-20 03:54:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-20 03:54:49,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:54:49,428 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] [2023-12-20 03:54:49,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-20 03:54:49,429 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:54:49,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:54:49,429 INFO L85 PathProgramCache]: Analyzing trace with hash 874733192, now seen corresponding path program 1 times [2023-12-20 03:54:49,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:54:49,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446022809] [2023-12-20 03:54:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:54:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:54:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:54:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:54:50,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:54:50,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446022809] [2023-12-20 03:54:50,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446022809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:54:50,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:54:50,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-20 03:54:50,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768955816] [2023-12-20 03:54:50,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:54:50,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 03:54:50,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:54:50,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 03:54:50,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-20 03:54:50,651 INFO L87 Difference]: Start difference. First operand 313666 states and 419035 transitions. Second operand has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:54:53,834 INFO L93 Difference]: Finished difference Result 338836 states and 452789 transitions. [2023-12-20 03:54:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 03:54:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2023-12-20 03:54:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:54:54,303 INFO L225 Difference]: With dead ends: 338836 [2023-12-20 03:54:54,303 INFO L226 Difference]: Without dead ends: 272531 [2023-12-20 03:54:54,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 03:54:54,364 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1847 mSDsluCounter, 8673 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 9554 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:54:54,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 9554 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 03:54:54,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272531 states. [2023-12-20 03:54:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272531 to 271996. [2023-12-20 03:54:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271996 states, 271995 states have (on average 1.3288148679203662) internal successors, (361431), 271995 states have internal predecessors, (361431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271996 states to 271996 states and 361431 transitions. [2023-12-20 03:54:58,687 INFO L78 Accepts]: Start accepts. Automaton has 271996 states and 361431 transitions. Word has length 190 [2023-12-20 03:54:58,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:54:58,687 INFO L495 AbstractCegarLoop]: Abstraction has 271996 states and 361431 transitions. [2023-12-20 03:54:58,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.176470588235293) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:54:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 271996 states and 361431 transitions. [2023-12-20 03:54:58,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:54:58,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:54:58,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:54:58,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-20 03:54:58,711 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:54:58,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:54:58,712 INFO L85 PathProgramCache]: Analyzing trace with hash 90244700, now seen corresponding path program 1 times [2023-12-20 03:54:58,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:54:58,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259241655] [2023-12-20 03:54:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:54:58,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:54:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:54:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:54:58,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:54:58,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259241655] [2023-12-20 03:54:58,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259241655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:54:58,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:54:58,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:54:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737641193] [2023-12-20 03:54:58,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:54:58,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:54:58,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:54:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:54:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:54:58,890 INFO L87 Difference]: Start difference. First operand 271996 states and 361431 transitions. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:00,674 INFO L93 Difference]: Finished difference Result 488338 states and 653800 transitions. [2023-12-20 03:55:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 03:55:00,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:55:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:01,699 INFO L225 Difference]: With dead ends: 488338 [2023-12-20 03:55:01,699 INFO L226 Difference]: Without dead ends: 488336 [2023-12-20 03:55:01,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:55:01,810 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 609 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:01,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 2087 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488336 states. [2023-12-20 03:55:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488336 to 272158. [2023-12-20 03:55:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272158 states, 272157 states have (on average 1.3286191426272336) internal successors, (361593), 272157 states have internal predecessors, (361593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272158 states to 272158 states and 361593 transitions. [2023-12-20 03:55:08,182 INFO L78 Accepts]: Start accepts. Automaton has 272158 states and 361593 transitions. Word has length 191 [2023-12-20 03:55:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:08,182 INFO L495 AbstractCegarLoop]: Abstraction has 272158 states and 361593 transitions. [2023-12-20 03:55:08,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 272158 states and 361593 transitions. [2023-12-20 03:55:08,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:55:08,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:08,205 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] [2023-12-20 03:55:08,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-20 03:55:08,205 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:08,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash 92091742, now seen corresponding path program 1 times [2023-12-20 03:55:08,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:08,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660126981] [2023-12-20 03:55:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:08,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660126981] [2023-12-20 03:55:08,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660126981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:08,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:08,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:55:08,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962542522] [2023-12-20 03:55:08,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:08,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:55:08,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:55:08,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:55:08,329 INFO L87 Difference]: Start difference. First operand 272158 states and 361593 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:10,320 INFO L93 Difference]: Finished difference Result 420605 states and 562418 transitions. [2023-12-20 03:55:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:55:10,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:55:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:11,461 INFO L225 Difference]: With dead ends: 420605 [2023-12-20 03:55:11,462 INFO L226 Difference]: Without dead ends: 321623 [2023-12-20 03:55:11,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:55:11,639 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 475 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:11,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 851 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321623 states. [2023-12-20 03:55:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321623 to 321163. [2023-12-20 03:55:15,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321163 states, 321162 states have (on average 1.322366905175581) internal successors, (424694), 321162 states have internal predecessors, (424694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321163 states to 321163 states and 424694 transitions. [2023-12-20 03:55:17,062 INFO L78 Accepts]: Start accepts. Automaton has 321163 states and 424694 transitions. Word has length 191 [2023-12-20 03:55:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:17,063 INFO L495 AbstractCegarLoop]: Abstraction has 321163 states and 424694 transitions. [2023-12-20 03:55:17,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 321163 states and 424694 transitions. [2023-12-20 03:55:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:55:17,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:17,087 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] [2023-12-20 03:55:17,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-20 03:55:17,087 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:17,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1801501042, now seen corresponding path program 1 times [2023-12-20 03:55:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:17,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020681257] [2023-12-20 03:55:17,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:17,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020681257] [2023-12-20 03:55:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020681257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:17,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:17,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:55:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449062311] [2023-12-20 03:55:17,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:55:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:55:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:55:17,187 INFO L87 Difference]: Start difference. First operand 321163 states and 424694 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:19,587 INFO L93 Difference]: Finished difference Result 647981 states and 865961 transitions. [2023-12-20 03:55:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:55:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:55:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:20,664 INFO L225 Difference]: With dead ends: 647981 [2023-12-20 03:55:20,664 INFO L226 Difference]: Without dead ends: 454277 [2023-12-20 03:55:20,856 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 [2023-12-20 03:55:20,857 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 349 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:20,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1214 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:21,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454277 states. [2023-12-20 03:55:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454277 to 316212. [2023-12-20 03:55:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316212 states, 316211 states have (on average 1.3264718811173553) internal successors, (419445), 316211 states have internal predecessors, (419445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316212 states to 316212 states and 419445 transitions. [2023-12-20 03:55:26,953 INFO L78 Accepts]: Start accepts. Automaton has 316212 states and 419445 transitions. Word has length 191 [2023-12-20 03:55:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:26,953 INFO L495 AbstractCegarLoop]: Abstraction has 316212 states and 419445 transitions. [2023-12-20 03:55:26,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 316212 states and 419445 transitions. [2023-12-20 03:55:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:55:26,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:26,969 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] [2023-12-20 03:55:26,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-20 03:55:26,969 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:26,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash -878863034, now seen corresponding path program 1 times [2023-12-20 03:55:26,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:26,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176469064] [2023-12-20 03:55:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:26,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:27,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:27,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176469064] [2023-12-20 03:55:27,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176469064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:27,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:27,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:55:27,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232675052] [2023-12-20 03:55:27,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:27,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:55:27,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:55:27,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:55:27,524 INFO L87 Difference]: Start difference. First operand 316212 states and 419445 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:28,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:28,947 INFO L93 Difference]: Finished difference Result 454883 states and 607609 transitions. [2023-12-20 03:55:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:55:28,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:55:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:29,575 INFO L225 Difference]: With dead ends: 454883 [2023-12-20 03:55:29,575 INFO L226 Difference]: Without dead ends: 355901 [2023-12-20 03:55:29,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:55:29,686 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 330 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:29,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1147 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355901 states. [2023-12-20 03:55:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355901 to 355578. [2023-12-20 03:55:34,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355578 states, 355577 states have (on average 1.322456176861833) internal successors, (470235), 355577 states have internal predecessors, (470235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355578 states to 355578 states and 470235 transitions. [2023-12-20 03:55:36,031 INFO L78 Accepts]: Start accepts. Automaton has 355578 states and 470235 transitions. Word has length 191 [2023-12-20 03:55:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:36,031 INFO L495 AbstractCegarLoop]: Abstraction has 355578 states and 470235 transitions. [2023-12-20 03:55:36,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 355578 states and 470235 transitions. [2023-12-20 03:55:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:55:36,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:36,053 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] [2023-12-20 03:55:36,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-20 03:55:36,053 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:36,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:36,054 INFO L85 PathProgramCache]: Analyzing trace with hash -131835687, now seen corresponding path program 1 times [2023-12-20 03:55:36,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:36,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167381029] [2023-12-20 03:55:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:36,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:36,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:36,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167381029] [2023-12-20 03:55:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167381029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:36,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:36,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:55:36,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557911972] [2023-12-20 03:55:36,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:36,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:55:36,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:36,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:55:36,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:55:36,265 INFO L87 Difference]: Start difference. First operand 355578 states and 470235 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:39,367 INFO L93 Difference]: Finished difference Result 687276 states and 918300 transitions. [2023-12-20 03:55:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:55:39,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:55:39,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:41,459 INFO L225 Difference]: With dead ends: 687276 [2023-12-20 03:55:41,459 INFO L226 Difference]: Without dead ends: 493708 [2023-12-20 03:55:41,631 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 [2023-12-20 03:55:41,631 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 328 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:41,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1496 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:55:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493708 states. [2023-12-20 03:55:46,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493708 to 353029. [2023-12-20 03:55:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353029 states, 353028 states have (on average 1.324019624505705) internal successors, (467416), 353028 states have internal predecessors, (467416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353029 states to 353029 states and 467416 transitions. [2023-12-20 03:55:47,940 INFO L78 Accepts]: Start accepts. Automaton has 353029 states and 467416 transitions. Word has length 191 [2023-12-20 03:55:47,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:47,940 INFO L495 AbstractCegarLoop]: Abstraction has 353029 states and 467416 transitions. [2023-12-20 03:55:47,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 353029 states and 467416 transitions. [2023-12-20 03:55:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:55:47,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:47,954 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] [2023-12-20 03:55:47,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-20 03:55:47,954 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:47,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:47,954 INFO L85 PathProgramCache]: Analyzing trace with hash 456600377, now seen corresponding path program 1 times [2023-12-20 03:55:47,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:47,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339531521] [2023-12-20 03:55:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:47,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:55:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:55:49,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:55:49,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339531521] [2023-12-20 03:55:49,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339531521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:55:49,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:55:49,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-20 03:55:49,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701700669] [2023-12-20 03:55:49,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:55:49,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 03:55:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:55:49,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 03:55:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2023-12-20 03:55:49,090 INFO L87 Difference]: Start difference. First operand 353029 states and 467416 transitions. Second operand has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:51,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:55:51,804 INFO L93 Difference]: Finished difference Result 415430 states and 551145 transitions. [2023-12-20 03:55:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 03:55:51,805 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:55:51,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:55:52,884 INFO L225 Difference]: With dead ends: 415430 [2023-12-20 03:55:52,885 INFO L226 Difference]: Without dead ends: 354908 [2023-12-20 03:55:52,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=294, Invalid=1266, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 03:55:52,993 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 2137 mSDsluCounter, 6912 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 7578 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:55:52,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 7578 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 03:55:53,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354908 states. [2023-12-20 03:55:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354908 to 353768. [2023-12-20 03:55:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353768 states, 353767 states have (on average 1.3234614873631514) internal successors, (468197), 353767 states have internal predecessors, (468197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353768 states to 353768 states and 468197 transitions. [2023-12-20 03:55:58,831 INFO L78 Accepts]: Start accepts. Automaton has 353768 states and 468197 transitions. Word has length 191 [2023-12-20 03:55:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:55:58,831 INFO L495 AbstractCegarLoop]: Abstraction has 353768 states and 468197 transitions. [2023-12-20 03:55:58,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:55:58,831 INFO L276 IsEmpty]: Start isEmpty. Operand 353768 states and 468197 transitions. [2023-12-20 03:55:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:55:58,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:55:58,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:55:58,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-12-20 03:55:58,851 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:55:58,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:55:58,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1032110808, now seen corresponding path program 1 times [2023-12-20 03:55:58,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:55:58,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82261624] [2023-12-20 03:55:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:55:58,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:55:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:56:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:56:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:56:00,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82261624] [2023-12-20 03:56:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82261624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:56:00,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:56:00,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-20 03:56:00,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553691208] [2023-12-20 03:56:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:56:00,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 03:56:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:56:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 03:56:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2023-12-20 03:56:00,363 INFO L87 Difference]: Start difference. First operand 353768 states and 468197 transitions. Second operand has 22 states, 22 states have (on average 8.681818181818182) internal successors, (191), 21 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:07,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:56:07,036 INFO L93 Difference]: Finished difference Result 571180 states and 756547 transitions. [2023-12-20 03:56:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-20 03:56:07,036 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.681818181818182) internal successors, (191), 21 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:56:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:56:08,266 INFO L225 Difference]: With dead ends: 571180 [2023-12-20 03:56:08,267 INFO L226 Difference]: Without dead ends: 547768 [2023-12-20 03:56:08,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=654, Invalid=2768, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 03:56:08,417 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 4444 mSDsluCounter, 13517 mSDsCounter, 0 mSdLazyCounter, 4830 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4444 SdHoareTripleChecker+Valid, 14514 SdHoareTripleChecker+Invalid, 4924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 4830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:56:08,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4444 Valid, 14514 Invalid, 4924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 4830 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 03:56:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547768 states. [2023-12-20 03:56:13,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547768 to 353881. [2023-12-20 03:56:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353881 states, 353880 states have (on average 1.3233355939866622) internal successors, (468302), 353880 states have internal predecessors, (468302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353881 states to 353881 states and 468302 transitions. [2023-12-20 03:56:15,328 INFO L78 Accepts]: Start accepts. Automaton has 353881 states and 468302 transitions. Word has length 191 [2023-12-20 03:56:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:56:15,328 INFO L495 AbstractCegarLoop]: Abstraction has 353881 states and 468302 transitions. [2023-12-20 03:56:15,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.681818181818182) internal successors, (191), 21 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 353881 states and 468302 transitions. [2023-12-20 03:56:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:56:15,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:56:15,342 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] [2023-12-20 03:56:15,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-12-20 03:56:15,342 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:56:15,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:56:15,343 INFO L85 PathProgramCache]: Analyzing trace with hash 168714858, now seen corresponding path program 1 times [2023-12-20 03:56:15,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:56:15,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293015591] [2023-12-20 03:56:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:56:15,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:56:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:56:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:56:15,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:56:15,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293015591] [2023-12-20 03:56:15,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293015591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:56:15,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:56:15,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:56:15,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834863817] [2023-12-20 03:56:15,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:56:15,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:56:15,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:56:15,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:56:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:56:15,443 INFO L87 Difference]: Start difference. First operand 353881 states and 468302 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:56:18,783 INFO L93 Difference]: Finished difference Result 814953 states and 1086146 transitions. [2023-12-20 03:56:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:56:18,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:56:18,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:56:20,075 INFO L225 Difference]: With dead ends: 814953 [2023-12-20 03:56:20,076 INFO L226 Difference]: Without dead ends: 531431 [2023-12-20 03:56:20,295 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 [2023-12-20 03:56:20,296 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 336 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:56:20,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1308 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:56:20,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531431 states. [2023-12-20 03:56:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531431 to 350603. [2023-12-20 03:56:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350603 states, 350602 states have (on average 1.3256570127951353) internal successors, (464778), 350602 states have internal predecessors, (464778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350603 states to 350603 states and 464778 transitions. [2023-12-20 03:56:27,998 INFO L78 Accepts]: Start accepts. Automaton has 350603 states and 464778 transitions. Word has length 191 [2023-12-20 03:56:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:56:27,998 INFO L495 AbstractCegarLoop]: Abstraction has 350603 states and 464778 transitions. [2023-12-20 03:56:27,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 350603 states and 464778 transitions. [2023-12-20 03:56:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:56:28,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:56:28,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:56:28,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-12-20 03:56:28,011 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:56:28,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:56:28,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1020358701, now seen corresponding path program 1 times [2023-12-20 03:56:28,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:56:28,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131255888] [2023-12-20 03:56:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:56:28,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:56:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:56:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:56:28,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:56:28,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131255888] [2023-12-20 03:56:28,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131255888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:56:28,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:56:28,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:56:28,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930601911] [2023-12-20 03:56:28,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:56:28,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:56:28,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:56:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:56:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:56:28,652 INFO L87 Difference]: Start difference. First operand 350603 states and 464778 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:56:30,261 INFO L93 Difference]: Finished difference Result 499050 states and 665603 transitions. [2023-12-20 03:56:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:56:30,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:56:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:56:31,617 INFO L225 Difference]: With dead ends: 499050 [2023-12-20 03:56:31,617 INFO L226 Difference]: Without dead ends: 400068 [2023-12-20 03:56:31,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:56:31,732 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 509 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:56:31,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 919 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:56:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400068 states. [2023-12-20 03:56:36,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400068 to 399791. [2023-12-20 03:56:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399791 states, 399790 states have (on average 1.3208484454338527) internal successors, (528062), 399790 states have internal predecessors, (528062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399791 states to 399791 states and 528062 transitions. [2023-12-20 03:56:38,190 INFO L78 Accepts]: Start accepts. Automaton has 399791 states and 528062 transitions. Word has length 191 [2023-12-20 03:56:38,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:56:38,191 INFO L495 AbstractCegarLoop]: Abstraction has 399791 states and 528062 transitions. [2023-12-20 03:56:38,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand 399791 states and 528062 transitions. [2023-12-20 03:56:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:56:38,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:56:38,204 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] [2023-12-20 03:56:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-12-20 03:56:38,204 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:56:38,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:56:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash -200214268, now seen corresponding path program 1 times [2023-12-20 03:56:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:56:38,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218460279] [2023-12-20 03:56:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:56:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:56:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:56:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:56:39,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:56:39,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218460279] [2023-12-20 03:56:39,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218460279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:56:39,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:56:39,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-20 03:56:39,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396074986] [2023-12-20 03:56:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:56:39,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:56:39,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:56:39,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:56:39,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:56:39,142 INFO L87 Difference]: Start difference. First operand 399791 states and 528062 transitions. Second operand has 21 states, 21 states have (on average 9.095238095238095) internal successors, (191), 21 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:56:43,782 INFO L93 Difference]: Finished difference Result 626289 states and 832511 transitions. [2023-12-20 03:56:43,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 03:56:43,782 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.095238095238095) internal successors, (191), 21 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:56:43,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:56:45,644 INFO L225 Difference]: With dead ends: 626289 [2023-12-20 03:56:45,645 INFO L226 Difference]: Without dead ends: 602751 [2023-12-20 03:56:45,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=444, Invalid=1536, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 03:56:45,857 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 5516 mSDsluCounter, 7833 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5516 SdHoareTripleChecker+Valid, 8478 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:56:45,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5516 Valid, 8478 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 03:56:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602751 states. [2023-12-20 03:56:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602751 to 400157. [2023-12-20 03:56:53,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400157 states, 400156 states have (on average 1.3205424884295125) internal successors, (528423), 400156 states have internal predecessors, (528423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400157 states to 400157 states and 528423 transitions. [2023-12-20 03:56:54,873 INFO L78 Accepts]: Start accepts. Automaton has 400157 states and 528423 transitions. Word has length 191 [2023-12-20 03:56:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:56:54,874 INFO L495 AbstractCegarLoop]: Abstraction has 400157 states and 528423 transitions. [2023-12-20 03:56:54,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.095238095238095) internal successors, (191), 21 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:56:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 400157 states and 528423 transitions. [2023-12-20 03:56:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 03:56:54,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:56:54,887 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] [2023-12-20 03:56:54,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-12-20 03:56:54,887 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:56:54,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:56:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1408083295, now seen corresponding path program 1 times [2023-12-20 03:56:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:56:54,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466580354] [2023-12-20 03:56:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:56:54,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:56:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:56:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:56:55,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:56:55,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466580354] [2023-12-20 03:56:55,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466580354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:56:55,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:56:55,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-12-20 03:56:55,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095512753] [2023-12-20 03:56:55,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:56:55,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 03:56:55,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:56:55,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 03:56:55,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2023-12-20 03:56:55,745 INFO L87 Difference]: Start difference. First operand 400157 states and 528423 transitions. Second operand has 21 states, 21 states have (on average 9.095238095238095) internal successors, (191), 21 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:57:01,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:57:01,096 INFO L93 Difference]: Finished difference Result 816034 states and 1079313 transitions. [2023-12-20 03:57:01,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 03:57:01,097 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.095238095238095) internal successors, (191), 21 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-20 03:57:01,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:57:03,431 INFO L225 Difference]: With dead ends: 816034 [2023-12-20 03:57:03,432 INFO L226 Difference]: Without dead ends: 792521 [2023-12-20 03:57:03,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=413, Invalid=1479, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 03:57:03,623 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 4364 mSDsluCounter, 8937 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 9705 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:57:03,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4364 Valid, 9705 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 03:57:04,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792521 states. Received shutdown request... [2023-12-20 03:57:08,559 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 [2023-12-20 03:57:09,757 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 [2023-12-20 03:57:10,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792521 to 398518. [2023-12-20 03:57:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398518 states, 398517 states have (on average 1.320146944797838) internal successors, (526101), 398517 states have internal predecessors, (526101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:57:10,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 03:57:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-12-20 03:57:10,700 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-20 03:57:10,706 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:57:10,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 03:57:10,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 03:57:10 BoogieIcfgContainer [2023-12-20 03:57:10,710 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 03:57:10,711 INFO L158 Benchmark]: Toolchain (without parser) took 606483.68ms. Allocated memory was 280.0MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 224.3MB in the beginning and 4.3GB in the end (delta: -4.1GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-20 03:57:10,711 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory was 154.4MB in the beginning and 154.3MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 03:57:10,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.25ms. Allocated memory is still 280.0MB. Free memory was 224.3MB in the beginning and 190.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-20 03:57:10,711 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.69ms. Allocated memory is still 280.0MB. Free memory was 190.7MB in the beginning and 184.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-20 03:57:10,711 INFO L158 Benchmark]: Boogie Preprocessor took 179.43ms. Allocated memory is still 280.0MB. Free memory was 184.4MB in the beginning and 239.7MB in the end (delta: -55.2MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2023-12-20 03:57:10,711 INFO L158 Benchmark]: RCFGBuilder took 1233.12ms. Allocated memory is still 280.0MB. Free memory was 239.7MB in the beginning and 143.2MB in the end (delta: 96.5MB). Peak memory consumption was 97.5MB. Max. memory is 8.0GB. [2023-12-20 03:57:10,711 INFO L158 Benchmark]: TraceAbstraction took 604402.64ms. Allocated memory was 280.0MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 142.1MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 3.6GB. Max. memory is 8.0GB. [2023-12-20 03:57:10,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory was 154.4MB in the beginning and 154.3MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 568.25ms. Allocated memory is still 280.0MB. Free memory was 224.3MB in the beginning and 190.7MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 94.69ms. Allocated memory is still 280.0MB. Free memory was 190.7MB in the beginning and 184.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 179.43ms. Allocated memory is still 280.0MB. Free memory was 184.4MB in the beginning and 239.7MB in the end (delta: -55.2MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. * RCFGBuilder took 1233.12ms. Allocated memory is still 280.0MB. Free memory was 239.7MB in the beginning and 143.2MB in the end (delta: 96.5MB). Peak memory consumption was 97.5MB. Max. memory is 8.0GB. * TraceAbstraction took 604402.64ms. Allocated memory was 280.0MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 142.1MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 3.6GB. 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: 914]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 914). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 335 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 604.4s, OverallIterations: 87, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.8s, AutomataDifference: 255.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146550 SdHoareTripleChecker+Valid, 53.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 146550 mSDsluCounter, 367239 SdHoareTripleChecker+Invalid, 45.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 310934 mSDsCounter, 2062 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90532 IncrementalHoareTripleChecker+Invalid, 92594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2062 mSolverCounterUnsat, 56305 mSDtfsCounter, 90532 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1620 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 1456 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11249 ImplicationChecksByTransitivity, 56.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400157occurred in iteration=86, InterpolantAutomatonStates: 1186, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 291.0s AutomataMinimizationTime, 87 MinimizatonAttempts, 4583064 StatesRemovedByMinimization, 78 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 51.3s InterpolantComputationTime, 15641 NumberOfCodeBlocks, 15641 NumberOfCodeBlocksAsserted, 87 NumberOfCheckSat, 15554 ConstructedInterpolants, 0 QuantifiedInterpolants, 128608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 87 InterpolantComputations, 87 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