/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:35:10,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:35:10,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 14:35:10,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:35:10,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:35:10,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:35:10,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:35:10,538 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:35:10,538 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:35:10,539 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:35:10,539 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:35:10,539 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:35:10,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:35:10,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:35:10,540 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:35:10,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:35:10,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:35:10,541 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:35:10,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:35:10,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:35:10,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:35:10,542 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:35:10,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:35:10,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:35:10,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:35:10,542 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:35:10,543 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:35:10,543 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:35:10,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:35:10,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:35:10,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:35:10,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:35:10,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:35:10,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:35:10,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:35:10,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:35:10,544 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:35:10,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:35:10,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:35:10,545 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:35:10,545 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:35:10,552 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:35:10,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:35:10,552 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:35:10,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:35:10,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:35:10,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:35:10,740 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:35:10,740 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:35:10,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-21 14:35:11,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:35:12,183 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:35:12,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-21 14:35:12,218 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f778794bf/80fc773a58c14a0caf8a24d2ce63db30/FLAGda21a589f [2023-12-21 14:35:12,245 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f778794bf/80fc773a58c14a0caf8a24d2ce63db30 [2023-12-21 14:35:12,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:35:12,248 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:35:12,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:35:12,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:35:12,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:35:12,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:35:12" (1/1) ... [2023-12-21 14:35:12,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77862ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:12, skipping insertion in model container [2023-12-21 14:35:12,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:35:12" (1/1) ... [2023-12-21 14:35:12,343 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:35:12,629 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.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[23233,23246] [2023-12-21 14:35:12,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:35:12,760 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:35:13,010 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.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[23233,23246] [2023-12-21 14:35:13,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:35:13,219 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:35:13,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13 WrapperNode [2023-12-21 14:35:13,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:35:13,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:35:13,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:35:13,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:35:13,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,340 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2966 [2023-12-21 14:35:13,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:35:13,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:35:13,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:35:13,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:35:13,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,399 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 14:35:13,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,447 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:35:13,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:35:13,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:35:13,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:35:13,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (1/1) ... [2023-12-21 14:35:13,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:35:13,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:35:13,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 14:35:13,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 14:35:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:35:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:35:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:35:13,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:35:13,657 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:35:13,659 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:35:15,026 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:35:15,068 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:35:15,068 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:35:15,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:35:15 BoogieIcfgContainer [2023-12-21 14:35:15,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:35:15,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:35:15,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:35:15,073 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:35:15,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:35:12" (1/3) ... [2023-12-21 14:35:15,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff2a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:35:15, skipping insertion in model container [2023-12-21 14:35:15,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:35:13" (2/3) ... [2023-12-21 14:35:15,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff2a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:35:15, skipping insertion in model container [2023-12-21 14:35:15,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:35:15" (3/3) ... [2023-12-21 14:35:15,075 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-21 14:35:15,089 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:35:15,089 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:35:15,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:35:15,139 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;@24970c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:35:15,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:35:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 768 states, 766 states have (on average 1.8394255874673628) internal successors, (1409), 767 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-21 14:35:15,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:15,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:15,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:15,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:15,167 INFO L85 PathProgramCache]: Analyzing trace with hash -673244228, now seen corresponding path program 1 times [2023-12-21 14:35:15,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489558991] [2023-12-21 14:35:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489558991] [2023-12-21 14:35:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489558991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613853134] [2023-12-21 14:35:15,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:15,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:15,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:15,780 INFO L87 Difference]: Start difference. First operand has 768 states, 766 states have (on average 1.8394255874673628) internal successors, (1409), 767 states have internal predecessors, (1409), 0 states have call successors, (0), 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 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:15,875 INFO L93 Difference]: Finished difference Result 1196 states and 2135 transitions. [2023-12-21 14:35:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:15,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2023-12-21 14:35:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:15,891 INFO L225 Difference]: With dead ends: 1196 [2023-12-21 14:35:15,891 INFO L226 Difference]: Without dead ends: 971 [2023-12-21 14:35:15,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:15,897 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 391 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:15,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2692 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-12-21 14:35:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2023-12-21 14:35:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 968 states have (on average 1.7365702479338843) internal successors, (1681), 968 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1681 transitions. [2023-12-21 14:35:15,970 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1681 transitions. Word has length 212 [2023-12-21 14:35:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:15,970 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1681 transitions. [2023-12-21 14:35:15,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1681 transitions. [2023-12-21 14:35:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-21 14:35:15,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:15,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:15,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:35:15,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:15,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash -325063551, now seen corresponding path program 1 times [2023-12-21 14:35:15,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:15,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739793441] [2023-12-21 14:35:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:15,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:16,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:16,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739793441] [2023-12-21 14:35:16,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739793441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:16,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:16,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:16,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256540580] [2023-12-21 14:35:16,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:16,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:16,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:16,225 INFO L87 Difference]: Start difference. First operand 969 states and 1681 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:16,253 INFO L93 Difference]: Finished difference Result 1789 states and 3065 transitions. [2023-12-21 14:35:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:16,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2023-12-21 14:35:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:16,262 INFO L225 Difference]: With dead ends: 1789 [2023-12-21 14:35:16,263 INFO L226 Difference]: Without dead ends: 1367 [2023-12-21 14:35:16,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:16,267 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 339 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2621 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 [2023-12-21 14:35:16,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 2621 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2023-12-21 14:35:16,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1365. [2023-12-21 14:35:16,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.721407624633431) internal successors, (2348), 1364 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2348 transitions. [2023-12-21 14:35:16,297 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2348 transitions. Word has length 216 [2023-12-21 14:35:16,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:16,298 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 2348 transitions. [2023-12-21 14:35:16,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:16,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2348 transitions. [2023-12-21 14:35:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-21 14:35:16,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:16,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:16,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:35:16,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:16,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:16,304 INFO L85 PathProgramCache]: Analyzing trace with hash 527319110, now seen corresponding path program 1 times [2023-12-21 14:35:16,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:16,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183774236] [2023-12-21 14:35:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:16,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:16,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183774236] [2023-12-21 14:35:16,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183774236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:16,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:16,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:16,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838544114] [2023-12-21 14:35:16,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:16,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:16,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:16,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:16,517 INFO L87 Difference]: Start difference. First operand 1365 states and 2348 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:16,551 INFO L93 Difference]: Finished difference Result 2953 states and 5022 transitions. [2023-12-21 14:35:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:16,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2023-12-21 14:35:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:16,558 INFO L225 Difference]: With dead ends: 2953 [2023-12-21 14:35:16,558 INFO L226 Difference]: Without dead ends: 2135 [2023-12-21 14:35:16,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:16,562 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 331 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2622 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 [2023-12-21 14:35:16,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 2622 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2023-12-21 14:35:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 2133. [2023-12-21 14:35:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2133 states, 2132 states have (on average 1.7054409005628517) internal successors, (3636), 2132 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3636 transitions. [2023-12-21 14:35:16,599 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3636 transitions. Word has length 220 [2023-12-21 14:35:16,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:16,602 INFO L495 AbstractCegarLoop]: Abstraction has 2133 states and 3636 transitions. [2023-12-21 14:35:16,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3636 transitions. [2023-12-21 14:35:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-21 14:35:16,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:16,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:16,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:35:16,610 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:16,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash 459862539, now seen corresponding path program 1 times [2023-12-21 14:35:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604166064] [2023-12-21 14:35:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:16,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604166064] [2023-12-21 14:35:16,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604166064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:16,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:16,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:16,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733497685] [2023-12-21 14:35:16,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:16,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:16,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:16,752 INFO L87 Difference]: Start difference. First operand 2133 states and 3636 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:16,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:16,791 INFO L93 Difference]: Finished difference Result 5209 states and 8798 transitions. [2023-12-21 14:35:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:16,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2023-12-21 14:35:16,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:16,803 INFO L225 Difference]: With dead ends: 5209 [2023-12-21 14:35:16,803 INFO L226 Difference]: Without dead ends: 3623 [2023-12-21 14:35:16,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:16,807 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 323 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2623 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 [2023-12-21 14:35:16,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 2623 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2023-12-21 14:35:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3621. [2023-12-21 14:35:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3620 states have (on average 1.6906077348066297) internal successors, (6120), 3620 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 6120 transitions. [2023-12-21 14:35:16,873 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 6120 transitions. Word has length 224 [2023-12-21 14:35:16,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:16,874 INFO L495 AbstractCegarLoop]: Abstraction has 3621 states and 6120 transitions. [2023-12-21 14:35:16,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 6120 transitions. [2023-12-21 14:35:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-21 14:35:16,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:16,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:35:16,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:16,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1949588688, now seen corresponding path program 1 times [2023-12-21 14:35:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131929871] [2023-12-21 14:35:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:17,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:17,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131929871] [2023-12-21 14:35:17,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131929871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:17,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:17,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:17,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653742031] [2023-12-21 14:35:17,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:17,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:17,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:17,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:17,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:17,071 INFO L87 Difference]: Start difference. First operand 3621 states and 6120 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:17,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:17,125 INFO L93 Difference]: Finished difference Result 9577 states and 16074 transitions. [2023-12-21 14:35:17,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:17,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 228 [2023-12-21 14:35:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:17,145 INFO L225 Difference]: With dead ends: 9577 [2023-12-21 14:35:17,145 INFO L226 Difference]: Without dead ends: 6503 [2023-12-21 14:35:17,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:17,153 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 315 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2624 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 [2023-12-21 14:35:17,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 2624 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:17,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2023-12-21 14:35:17,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 6501. [2023-12-21 14:35:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6501 states, 6500 states have (on average 1.6775384615384616) internal successors, (10904), 6500 states have internal predecessors, (10904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6501 states to 6501 states and 10904 transitions. [2023-12-21 14:35:17,269 INFO L78 Accepts]: Start accepts. Automaton has 6501 states and 10904 transitions. Word has length 228 [2023-12-21 14:35:17,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:17,269 INFO L495 AbstractCegarLoop]: Abstraction has 6501 states and 10904 transitions. [2023-12-21 14:35:17,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6501 states and 10904 transitions. [2023-12-21 14:35:17,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-21 14:35:17,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:17,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:17,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:35:17,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:17,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:17,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1283826795, now seen corresponding path program 1 times [2023-12-21 14:35:17,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:17,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028812566] [2023-12-21 14:35:17,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:17,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:17,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:17,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028812566] [2023-12-21 14:35:17,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028812566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:17,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:17,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:35:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878588103] [2023-12-21 14:35:17,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:17,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:35:17,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:35:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:35:17,572 INFO L87 Difference]: Start difference. First operand 6501 states and 10904 transitions. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:18,103 INFO L93 Difference]: Finished difference Result 40025 states and 67186 transitions. [2023-12-21 14:35:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 14:35:18,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2023-12-21 14:35:18,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:18,188 INFO L225 Difference]: With dead ends: 40025 [2023-12-21 14:35:18,188 INFO L226 Difference]: Without dead ends: 34071 [2023-12-21 14:35:18,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-21 14:35:18,201 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 5656 mSDsluCounter, 9272 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 10596 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:18,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5656 Valid, 10596 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:35:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34071 states. [2023-12-21 14:35:18,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34071 to 12238. [2023-12-21 14:35:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12238 states, 12237 states have (on average 1.6726321810901366) internal successors, (20468), 12237 states have internal predecessors, (20468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12238 states to 12238 states and 20468 transitions. [2023-12-21 14:35:18,600 INFO L78 Accepts]: Start accepts. Automaton has 12238 states and 20468 transitions. Word has length 232 [2023-12-21 14:35:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:18,601 INFO L495 AbstractCegarLoop]: Abstraction has 12238 states and 20468 transitions. [2023-12-21 14:35:18,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 12238 states and 20468 transitions. [2023-12-21 14:35:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-21 14:35:18,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:18,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:18,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:35:18,611 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:18,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1215544706, now seen corresponding path program 1 times [2023-12-21 14:35:18,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:18,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932398929] [2023-12-21 14:35:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:18,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:18,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:18,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932398929] [2023-12-21 14:35:18,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932398929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:18,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:18,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:35:18,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328102240] [2023-12-21 14:35:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:18,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:35:18,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:18,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:35:18,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:35:18,769 INFO L87 Difference]: Start difference. First operand 12238 states and 20468 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:18,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:18,990 INFO L93 Difference]: Finished difference Result 35947 states and 60211 transitions. [2023-12-21 14:35:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:35:18,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2023-12-21 14:35:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:19,037 INFO L225 Difference]: With dead ends: 35947 [2023-12-21 14:35:19,037 INFO L226 Difference]: Without dead ends: 24256 [2023-12-21 14:35:19,059 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 [2023-12-21 14:35:19,061 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 1087 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:19,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 4306 Invalid, 51 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24256 states. [2023-12-21 14:35:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24256 to 18214. [2023-12-21 14:35:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18214 states, 18213 states have (on average 1.6726514028441224) internal successors, (30464), 18213 states have internal predecessors, (30464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18214 states to 18214 states and 30464 transitions. [2023-12-21 14:35:19,415 INFO L78 Accepts]: Start accepts. Automaton has 18214 states and 30464 transitions. Word has length 233 [2023-12-21 14:35:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:19,416 INFO L495 AbstractCegarLoop]: Abstraction has 18214 states and 30464 transitions. [2023-12-21 14:35:19,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 18214 states and 30464 transitions. [2023-12-21 14:35:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 14:35:19,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:19,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:19,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:35:19,425 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:19,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:19,426 INFO L85 PathProgramCache]: Analyzing trace with hash 905758076, now seen corresponding path program 1 times [2023-12-21 14:35:19,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:19,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577610131] [2023-12-21 14:35:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:19,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:19,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:19,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577610131] [2023-12-21 14:35:19,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577610131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:19,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:19,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:35:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977452817] [2023-12-21 14:35:19,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:19,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:35:19,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:19,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:35:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:35:19,645 INFO L87 Difference]: Start difference. First operand 18214 states and 30464 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:19,871 INFO L93 Difference]: Finished difference Result 53759 states and 89951 transitions. [2023-12-21 14:35:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:35:19,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2023-12-21 14:35:19,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:19,941 INFO L225 Difference]: With dead ends: 53759 [2023-12-21 14:35:19,941 INFO L226 Difference]: Without dead ends: 36092 [2023-12-21 14:35:19,974 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 [2023-12-21 14:35:19,976 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 1085 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:19,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 4307 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36092 states. [2023-12-21 14:35:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36092 to 27105. [2023-12-21 14:35:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27105 states, 27104 states have (on average 1.6703807556080283) internal successors, (45274), 27104 states have internal predecessors, (45274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:20,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27105 states to 27105 states and 45274 transitions. [2023-12-21 14:35:20,641 INFO L78 Accepts]: Start accepts. Automaton has 27105 states and 45274 transitions. Word has length 234 [2023-12-21 14:35:20,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:20,641 INFO L495 AbstractCegarLoop]: Abstraction has 27105 states and 45274 transitions. [2023-12-21 14:35:20,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:20,642 INFO L276 IsEmpty]: Start isEmpty. Operand 27105 states and 45274 transitions. [2023-12-21 14:35:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 14:35:20,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:20,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:20,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:35:20,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:20,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1368126776, now seen corresponding path program 1 times [2023-12-21 14:35:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13177817] [2023-12-21 14:35:20,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:20,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:20,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13177817] [2023-12-21 14:35:20,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13177817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:20,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:20,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:20,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269762766] [2023-12-21 14:35:20,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:20,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:20,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:20,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:20,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:20,796 INFO L87 Difference]: Start difference. First operand 27105 states and 45274 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:20,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:20,988 INFO L93 Difference]: Finished difference Result 54645 states and 91273 transitions. [2023-12-21 14:35:20,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:20,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2023-12-21 14:35:20,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:21,064 INFO L225 Difference]: With dead ends: 54645 [2023-12-21 14:35:21,064 INFO L226 Difference]: Without dead ends: 40603 [2023-12-21 14:35:21,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:21,098 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 316 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:21,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2661 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:21,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40603 states. [2023-12-21 14:35:21,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40603 to 40601. [2023-12-21 14:35:21,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40601 states, 40600 states have (on average 1.6652955665024631) internal successors, (67611), 40600 states have internal predecessors, (67611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40601 states to 40601 states and 67611 transitions. [2023-12-21 14:35:22,247 INFO L78 Accepts]: Start accepts. Automaton has 40601 states and 67611 transitions. Word has length 234 [2023-12-21 14:35:22,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:22,248 INFO L495 AbstractCegarLoop]: Abstraction has 40601 states and 67611 transitions. [2023-12-21 14:35:22,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:22,248 INFO L276 IsEmpty]: Start isEmpty. Operand 40601 states and 67611 transitions. [2023-12-21 14:35:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 14:35:22,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:22,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:22,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:35:22,266 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:22,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:22,267 INFO L85 PathProgramCache]: Analyzing trace with hash 744706658, now seen corresponding path program 1 times [2023-12-21 14:35:22,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:22,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909125503] [2023-12-21 14:35:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:22,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:22,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:22,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909125503] [2023-12-21 14:35:22,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909125503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:22,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:22,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:22,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887168257] [2023-12-21 14:35:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:22,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:22,497 INFO L87 Difference]: Start difference. First operand 40601 states and 67611 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:22,771 INFO L93 Difference]: Finished difference Result 76317 states and 127229 transitions. [2023-12-21 14:35:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:22,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2023-12-21 14:35:22,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:22,890 INFO L225 Difference]: With dead ends: 76317 [2023-12-21 14:35:22,890 INFO L226 Difference]: Without dead ends: 55947 [2023-12-21 14:35:23,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:23,089 INFO L413 NwaCegarLoop]: 1442 mSDtfsCounter, 324 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:23,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 2727 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55947 states. [2023-12-21 14:35:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55947 to 55945. [2023-12-21 14:35:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55945 states, 55944 states have (on average 1.6621800371800373) internal successors, (92989), 55944 states have internal predecessors, (92989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55945 states to 55945 states and 92989 transitions. [2023-12-21 14:35:24,030 INFO L78 Accepts]: Start accepts. Automaton has 55945 states and 92989 transitions. Word has length 234 [2023-12-21 14:35:24,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:24,034 INFO L495 AbstractCegarLoop]: Abstraction has 55945 states and 92989 transitions. [2023-12-21 14:35:24,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:24,034 INFO L276 IsEmpty]: Start isEmpty. Operand 55945 states and 92989 transitions. [2023-12-21 14:35:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 14:35:24,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:24,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:24,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:35:24,041 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:24,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:24,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2095703796, now seen corresponding path program 1 times [2023-12-21 14:35:24,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486975065] [2023-12-21 14:35:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:24,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:24,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486975065] [2023-12-21 14:35:24,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486975065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:24,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:24,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:24,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445166194] [2023-12-21 14:35:24,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:24,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:24,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:24,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:24,187 INFO L87 Difference]: Start difference. First operand 55945 states and 92989 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:24,652 INFO L93 Difference]: Finished difference Result 106061 states and 176529 transitions. [2023-12-21 14:35:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:24,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2023-12-21 14:35:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:24,838 INFO L225 Difference]: With dead ends: 106061 [2023-12-21 14:35:24,838 INFO L226 Difference]: Without dead ends: 77213 [2023-12-21 14:35:24,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:24,871 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 332 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:24,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2793 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:24,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77213 states. [2023-12-21 14:35:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77213 to 77211. [2023-12-21 14:35:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77211 states, 77210 states have (on average 1.660108794197643) internal successors, (128177), 77210 states have internal predecessors, (128177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77211 states to 77211 states and 128177 transitions. [2023-12-21 14:35:26,132 INFO L78 Accepts]: Start accepts. Automaton has 77211 states and 128177 transitions. Word has length 234 [2023-12-21 14:35:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:26,133 INFO L495 AbstractCegarLoop]: Abstraction has 77211 states and 128177 transitions. [2023-12-21 14:35:26,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 77211 states and 128177 transitions. [2023-12-21 14:35:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 14:35:26,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:26,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:26,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:35:26,341 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:26,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:26,341 INFO L85 PathProgramCache]: Analyzing trace with hash 347556150, now seen corresponding path program 1 times [2023-12-21 14:35:26,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:26,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303313918] [2023-12-21 14:35:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:26,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:26,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:26,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303313918] [2023-12-21 14:35:26,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303313918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:26,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:26,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:26,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039721176] [2023-12-21 14:35:26,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:26,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:26,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:26,508 INFO L87 Difference]: Start difference. First operand 77211 states and 128177 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:27,143 INFO L93 Difference]: Finished difference Result 168677 states and 280221 transitions. [2023-12-21 14:35:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2023-12-21 14:35:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:27,363 INFO L225 Difference]: With dead ends: 168677 [2023-12-21 14:35:27,364 INFO L226 Difference]: Without dead ends: 116272 [2023-12-21 14:35:27,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:27,430 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 340 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:27,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 2858 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116272 states. [2023-12-21 14:35:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116272 to 116270. [2023-12-21 14:35:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116270 states, 116269 states have (on average 1.6562712330887854) internal successors, (192573), 116269 states have internal predecessors, (192573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116270 states to 116270 states and 192573 transitions. [2023-12-21 14:35:29,269 INFO L78 Accepts]: Start accepts. Automaton has 116270 states and 192573 transitions. Word has length 234 [2023-12-21 14:35:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:29,270 INFO L495 AbstractCegarLoop]: Abstraction has 116270 states and 192573 transitions. [2023-12-21 14:35:29,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 116270 states and 192573 transitions. [2023-12-21 14:35:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-21 14:35:29,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:29,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:29,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:35:29,272 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:29,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:29,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2133204256, now seen corresponding path program 1 times [2023-12-21 14:35:29,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:29,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961555384] [2023-12-21 14:35:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:29,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:29,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:29,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961555384] [2023-12-21 14:35:29,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961555384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:29,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:29,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:35:29,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533674067] [2023-12-21 14:35:29,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:29,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:35:29,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:29,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:35:29,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:29,595 INFO L87 Difference]: Start difference. First operand 116270 states and 192573 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:30,507 INFO L93 Difference]: Finished difference Result 255753 states and 424972 transitions. [2023-12-21 14:35:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:35:30,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2023-12-21 14:35:30,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:30,873 INFO L225 Difference]: With dead ends: 255753 [2023-12-21 14:35:30,873 INFO L226 Difference]: Without dead ends: 175670 [2023-12-21 14:35:30,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:35:30,987 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 348 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:30,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 2916 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175670 states. [2023-12-21 14:35:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175670 to 175668. [2023-12-21 14:35:33,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175668 states, 175667 states have (on average 1.6543915476441222) internal successors, (290622), 175667 states have internal predecessors, (290622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175668 states to 175668 states and 290622 transitions. [2023-12-21 14:35:33,872 INFO L78 Accepts]: Start accepts. Automaton has 175668 states and 290622 transitions. Word has length 234 [2023-12-21 14:35:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:33,888 INFO L495 AbstractCegarLoop]: Abstraction has 175668 states and 290622 transitions. [2023-12-21 14:35:33,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 175668 states and 290622 transitions. [2023-12-21 14:35:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-21 14:35:33,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:33,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:33,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:35:33,891 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:33,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:33,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2048774395, now seen corresponding path program 1 times [2023-12-21 14:35:33,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:33,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569938268] [2023-12-21 14:35:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:33,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:34,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:34,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569938268] [2023-12-21 14:35:34,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569938268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:34,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:34,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:35:34,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746043944] [2023-12-21 14:35:34,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:34,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:35:34,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:35:34,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:35:34,702 INFO L87 Difference]: Start difference. First operand 175668 states and 290622 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:36,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:36,868 INFO L93 Difference]: Finished difference Result 576591 states and 954765 transitions. [2023-12-21 14:35:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:35:36,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2023-12-21 14:35:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:37,917 INFO L225 Difference]: With dead ends: 576591 [2023-12-21 14:35:37,917 INFO L226 Difference]: Without dead ends: 401584 [2023-12-21 14:35:38,004 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 [2023-12-21 14:35:38,005 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 1083 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:38,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 4309 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401584 states. [2023-12-21 14:35:42,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401584 to 288183. [2023-12-21 14:35:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288183 states, 288182 states have (on average 1.6508629963009487) internal successors, (475749), 288182 states have internal predecessors, (475749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:43,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288183 states to 288183 states and 475749 transitions. [2023-12-21 14:35:43,331 INFO L78 Accepts]: Start accepts. Automaton has 288183 states and 475749 transitions. Word has length 235 [2023-12-21 14:35:43,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:43,332 INFO L495 AbstractCegarLoop]: Abstraction has 288183 states and 475749 transitions. [2023-12-21 14:35:43,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 288183 states and 475749 transitions. [2023-12-21 14:35:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-21 14:35:43,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:43,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:43,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:35:43,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:43,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash 854557539, now seen corresponding path program 1 times [2023-12-21 14:35:43,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:43,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475280518] [2023-12-21 14:35:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:43,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:43,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475280518] [2023-12-21 14:35:43,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475280518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:43,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:43,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:35:43,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289942812] [2023-12-21 14:35:43,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:43,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:35:43,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:35:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:35:43,546 INFO L87 Difference]: Start difference. First operand 288183 states and 475749 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:35:46,934 INFO L93 Difference]: Finished difference Result 942745 states and 1557847 transitions. [2023-12-21 14:35:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:35:46,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2023-12-21 14:35:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:35:48,755 INFO L225 Difference]: With dead ends: 942745 [2023-12-21 14:35:48,755 INFO L226 Difference]: Without dead ends: 655223 [2023-12-21 14:35:48,934 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 [2023-12-21 14:35:48,934 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 1081 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:35:48,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 4311 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:35:49,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655223 states. [2023-12-21 14:35:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655223 to 470978. [2023-12-21 14:35:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470978 states, 470977 states have (on average 1.647384054847689) internal successors, (775880), 470977 states have internal predecessors, (775880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470978 states to 470978 states and 775880 transitions. [2023-12-21 14:35:57,973 INFO L78 Accepts]: Start accepts. Automaton has 470978 states and 775880 transitions. Word has length 236 [2023-12-21 14:35:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:35:57,973 INFO L495 AbstractCegarLoop]: Abstraction has 470978 states and 775880 transitions. [2023-12-21 14:35:57,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:35:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 470978 states and 775880 transitions. [2023-12-21 14:35:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-21 14:35:57,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:35:57,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:35:57,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:35:57,975 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:35:57,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:35:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash 668092300, now seen corresponding path program 1 times [2023-12-21 14:35:57,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:35:57,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733277597] [2023-12-21 14:35:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:35:57,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:35:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:35:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:35:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:35:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733277597] [2023-12-21 14:35:58,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733277597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:35:58,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:35:58,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:35:58,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941526993] [2023-12-21 14:35:58,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:35:58,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:35:58,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:35:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:35:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:35:58,691 INFO L87 Difference]: Start difference. First operand 470978 states and 775880 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:36:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:36:04,509 INFO L93 Difference]: Finished difference Result 1529827 states and 2522793 transitions. [2023-12-21 14:36:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:36:04,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2023-12-21 14:36:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:36:07,587 INFO L225 Difference]: With dead ends: 1529827 [2023-12-21 14:36:07,587 INFO L226 Difference]: Without dead ends: 1059510 [2023-12-21 14:36:07,851 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 [2023-12-21 14:36:07,851 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 1079 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 4314 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:36:07,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 4314 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:36:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059510 states. [2023-12-21 14:36:18,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059510 to 764073. [2023-12-21 14:36:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764073 states, 764072 states have (on average 1.6439851218209802) internal successors, (1256123), 764072 states have internal predecessors, (1256123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:36:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764073 states to 764073 states and 1256123 transitions. [2023-12-21 14:36:23,913 INFO L78 Accepts]: Start accepts. Automaton has 764073 states and 1256123 transitions. Word has length 237 [2023-12-21 14:36:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:36:23,913 INFO L495 AbstractCegarLoop]: Abstraction has 764073 states and 1256123 transitions. [2023-12-21 14:36:23,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:36:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 764073 states and 1256123 transitions. [2023-12-21 14:36:23,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-12-21 14:36:23,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:36:23,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:36:23,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:36:23,916 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:36:23,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:36:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash 569278205, now seen corresponding path program 1 times [2023-12-21 14:36:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:36:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853553948] [2023-12-21 14:36:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:36:23,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:36:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:36:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:36:24,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:36:24,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853553948] [2023-12-21 14:36:24,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853553948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:36:24,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:36:24,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:36:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138414509] [2023-12-21 14:36:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:36:24,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:36:24,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:36:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:36:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:36:24,636 INFO L87 Difference]: Start difference. First operand 764073 states and 1256123 transitions. Second operand has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:36:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:36:31,047 INFO L93 Difference]: Finished difference Result 1527487 states and 2511102 transitions. [2023-12-21 14:36:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 14:36:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2023-12-21 14:36:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:36:33,522 INFO L225 Difference]: With dead ends: 1527487 [2023-12-21 14:36:33,523 INFO L226 Difference]: Without dead ends: 764075 [2023-12-21 14:36:34,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-21 14:36:34,275 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 323 mSDsluCounter, 6485 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 7817 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:36:34,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 7817 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:36:35,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764075 states. [2023-12-21 14:36:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764075 to 764073. [2023-12-21 14:36:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764073 states, 764072 states have (on average 1.6398951931231611) internal successors, (1252998), 764072 states have internal predecessors, (1252998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:36:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764073 states to 764073 states and 1252998 transitions. [2023-12-21 14:36:47,456 INFO L78 Accepts]: Start accepts. Automaton has 764073 states and 1252998 transitions. Word has length 239 [2023-12-21 14:36:47,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:36:47,457 INFO L495 AbstractCegarLoop]: Abstraction has 764073 states and 1252998 transitions. [2023-12-21 14:36:47,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.142857142857146) internal successors, (239), 7 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:36:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 764073 states and 1252998 transitions. [2023-12-21 14:36:47,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-21 14:36:47,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:36:47,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:36:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:36:47,459 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:36:47,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:36:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 788077749, now seen corresponding path program 1 times [2023-12-21 14:36:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:36:47,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698598821] [2023-12-21 14:36:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:36:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:36:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:36:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:36:47,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:36:47,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698598821] [2023-12-21 14:36:47,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698598821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:36:47,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:36:47,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 14:36:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966085282] [2023-12-21 14:36:47,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:36:47,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 14:36:47,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:36:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 14:36:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:36:47,953 INFO L87 Difference]: Start difference. First operand 764073 states and 1252998 transitions. Second operand has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 14:36:57,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:36:57,680 INFO L93 Difference]: Finished difference Result 2258439 states and 3705130 transitions. [2023-12-21 14:36:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 14:36:57,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2023-12-21 14:36:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:37:02,497 INFO L225 Difference]: With dead ends: 2258439 [2023-12-21 14:37:02,497 INFO L226 Difference]: Without dead ends: 1495027