/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 21:20:00,142 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 21:20:00,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 21:20:00,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 21:20:00,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 21:20:00,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 21:20:00,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 21:20:00,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 21:20:00,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 21:20:00,233 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 21:20:00,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 21:20:00,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 21:20:00,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 21:20:00,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 21:20:00,235 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 21:20:00,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 21:20:00,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 21:20:00,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 21:20:00,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 21:20:00,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 21:20:00,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 21:20:00,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 21:20:00,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 21:20:00,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 21:20:00,237 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 21:20:00,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 21:20:00,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 21:20:00,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 21:20:00,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 21:20:00,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 21:20:00,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 21:20:00,239 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 21:20:00,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 21:20:00,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 21:20:00,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 21:20:00,431 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 21:20:00,431 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 21:20:00,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-back-serstep.c [2023-12-25 21:20:01,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 21:20:01,659 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 21:20:01,660 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-back-serstep.c [2023-12-25 21:20:01,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd15949cd/af72dc15b60c474a86151247117c4cb5/FLAGa185a3c96 [2023-12-25 21:20:01,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd15949cd/af72dc15b60c474a86151247117c4cb5 [2023-12-25 21:20:01,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 21:20:01,707 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 21:20:01,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 21:20:01,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 21:20:01,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 21:20:01,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:20:01" (1/1) ... [2023-12-25 21:20:01,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6604173e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:01, skipping insertion in model container [2023-12-25 21:20:01,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:20:01" (1/1) ... [2023-12-25 21:20:01,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 21:20:01,922 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-back-serstep.c[1181,1194] [2023-12-25 21:20:02,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 21:20:02,368 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 21:20:02,376 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.reader_writer.2.prop1-back-serstep.c[1181,1194] [2023-12-25 21:20:02,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 21:20:02,572 INFO L206 MainTranslator]: Completed translation [2023-12-25 21:20:02,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02 WrapperNode [2023-12-25 21:20:02,573 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 21:20:02,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 21:20:02,574 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 21:20:02,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 21:20:02,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:02,740 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:03,845 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18750 [2023-12-25 21:20:03,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 21:20:03,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 21:20:03,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 21:20:03,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 21:20:03,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:03,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:04,546 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:04,796 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]. [2023-12-25 21:20:04,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:04,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:05,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:05,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:05,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:05,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:05,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 21:20:05,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 21:20:05,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 21:20:05,591 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 21:20:05,592 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (1/1) ... [2023-12-25 21:20:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 21:20:05,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:20:05,620 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) [2023-12-25 21:20:05,632 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 [2023-12-25 21:20:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 21:20:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 21:20:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 21:20:05,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 21:20:06,424 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 21:20:06,426 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 21:20:12,645 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 21:20:12,819 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 21:20:12,819 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 21:20:12,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:20:12 BoogieIcfgContainer [2023-12-25 21:20:12,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 21:20:12,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 21:20:12,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 21:20:12,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 21:20:12,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:20:01" (1/3) ... [2023-12-25 21:20:12,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4a1df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:20:12, skipping insertion in model container [2023-12-25 21:20:12,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:20:02" (2/3) ... [2023-12-25 21:20:12,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4a1df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:20:12, skipping insertion in model container [2023-12-25 21:20:12,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:20:12" (3/3) ... [2023-12-25 21:20:12,825 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.reader_writer.2.prop1-back-serstep.c [2023-12-25 21:20:12,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 21:20:12,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 21:20:12,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 21:20:12,917 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;@6febb3ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 21:20:12,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 21:20:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 4289 states, 4287 states have (on average 1.6666666666666667) internal successors, (7145), 4288 states have internal predecessors, (7145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2023-12-25 21:20:12,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:12,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:12,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:12,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash -938756393, now seen corresponding path program 1 times [2023-12-25 21:20:12,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:12,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896110119] [2023-12-25 21:20:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:12,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:14,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:14,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896110119] [2023-12-25 21:20:14,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896110119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:14,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:14,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:20:14,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930485255] [2023-12-25 21:20:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:14,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:20:14,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:14,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:20:14,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:20:14,467 INFO L87 Difference]: Start difference. First operand has 4289 states, 4287 states have (on average 1.6666666666666667) internal successors, (7145), 4288 states have internal predecessors, (7145), 0 states have call successors, (0), 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 5 states, 5 states have (on average 81.6) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:18,809 INFO L93 Difference]: Finished difference Result 12591 states and 20981 transitions. [2023-12-25 21:20:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:20:18,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 81.6) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 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 408 [2023-12-25 21:20:18,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:18,853 INFO L225 Difference]: With dead ends: 12591 [2023-12-25 21:20:18,853 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:20:18,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:20:18,866 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20696 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20696 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:18,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20696 Valid, 15764 Invalid, 5659 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-25 21:20:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:20:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4563. [2023-12-25 21:20:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4562 states have (on average 1.6657167908811925) internal successors, (7599), 4562 states have internal predecessors, (7599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7599 transitions. [2023-12-25 21:20:19,006 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7599 transitions. Word has length 408 [2023-12-25 21:20:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:19,010 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 7599 transitions. [2023-12-25 21:20:19,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.6) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7599 transitions. [2023-12-25 21:20:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-12-25 21:20:19,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:19,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:19,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 21:20:19,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:19,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash -752770311, now seen corresponding path program 1 times [2023-12-25 21:20:19,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:19,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893750465] [2023-12-25 21:20:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:19,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893750465] [2023-12-25 21:20:19,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893750465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:19,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:19,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:20:19,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137037908] [2023-12-25 21:20:19,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:19,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:20:19,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:19,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:20:19,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:20:19,668 INFO L87 Difference]: Start difference. First operand 4563 states and 7599 transitions. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:23,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:23,679 INFO L93 Difference]: Finished difference Result 12769 states and 21238 transitions. [2023-12-25 21:20:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:20:23,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2023-12-25 21:20:23,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:23,707 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:20:23,707 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:20:23,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:20:23,715 INFO L413 NwaCegarLoop]: 5707 mSDtfsCounter, 20777 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5662 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20777 SdHoareTripleChecker+Valid, 23439 SdHoareTripleChecker+Invalid, 5752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:23,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20777 Valid, 23439 Invalid, 5752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 5662 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-25 21:20:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:20:23,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4571. [2023-12-25 21:20:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 4570 states have (on average 1.6654266958424508) internal successors, (7611), 4570 states have internal predecessors, (7611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 7611 transitions. [2023-12-25 21:20:23,800 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 7611 transitions. Word has length 409 [2023-12-25 21:20:23,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:23,800 INFO L495 AbstractCegarLoop]: Abstraction has 4571 states and 7611 transitions. [2023-12-25 21:20:23,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 7611 transitions. [2023-12-25 21:20:23,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-12-25 21:20:23,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:23,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:23,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 21:20:23,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:23,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:23,805 INFO L85 PathProgramCache]: Analyzing trace with hash 82660199, now seen corresponding path program 1 times [2023-12-25 21:20:23,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:23,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898112024] [2023-12-25 21:20:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:23,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:24,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:24,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898112024] [2023-12-25 21:20:24,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898112024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:24,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:24,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:20:24,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45842462] [2023-12-25 21:20:24,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:24,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:20:24,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:20:24,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:20:24,580 INFO L87 Difference]: Start difference. First operand 4571 states and 7611 transitions. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:28,365 INFO L93 Difference]: Finished difference Result 12589 states and 20968 transitions. [2023-12-25 21:20:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:20:28,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 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 410 [2023-12-25 21:20:28,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:28,405 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:20:28,405 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:20:28,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:20:28,425 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20684 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20684 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:28,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20684 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 21:20:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:20:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4572. [2023-12-25 21:20:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 4571 states have (on average 1.66528112010501) internal successors, (7612), 4571 states have internal predecessors, (7612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 7612 transitions. [2023-12-25 21:20:28,542 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 7612 transitions. Word has length 410 [2023-12-25 21:20:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:28,543 INFO L495 AbstractCegarLoop]: Abstraction has 4572 states and 7612 transitions. [2023-12-25 21:20:28,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 7612 transitions. [2023-12-25 21:20:28,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-12-25 21:20:28,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:28,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:28,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 21:20:28,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:28,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:28,554 INFO L85 PathProgramCache]: Analyzing trace with hash -502111451, now seen corresponding path program 1 times [2023-12-25 21:20:28,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:28,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52771226] [2023-12-25 21:20:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:28,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:29,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:29,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52771226] [2023-12-25 21:20:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52771226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:29,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:29,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:20:29,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037962660] [2023-12-25 21:20:29,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:29,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:20:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:20:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:20:29,125 INFO L87 Difference]: Start difference. First operand 4572 states and 7612 transitions. Second operand has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:31,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:31,628 INFO L93 Difference]: Finished difference Result 12769 states and 21236 transitions. [2023-12-25 21:20:31,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:20:31,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 410 [2023-12-25 21:20:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:31,640 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:20:31,640 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:20:31,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:20:31,646 INFO L413 NwaCegarLoop]: 5709 mSDtfsCounter, 27476 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 3865 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27476 SdHoareTripleChecker+Valid, 18282 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:31,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27476 Valid, 18282 Invalid, 3955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3865 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 21:20:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:20:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4580. [2023-12-25 21:20:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4579 states have (on average 1.6649923564096965) internal successors, (7624), 4579 states have internal predecessors, (7624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 7624 transitions. [2023-12-25 21:20:31,730 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 7624 transitions. Word has length 410 [2023-12-25 21:20:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:31,730 INFO L495 AbstractCegarLoop]: Abstraction has 4580 states and 7624 transitions. [2023-12-25 21:20:31,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 7624 transitions. [2023-12-25 21:20:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-12-25 21:20:31,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:31,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:31,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 21:20:31,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:31,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:31,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1165740855, now seen corresponding path program 1 times [2023-12-25 21:20:31,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:31,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190290925] [2023-12-25 21:20:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:32,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:32,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190290925] [2023-12-25 21:20:32,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190290925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:32,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:32,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:20:32,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645665959] [2023-12-25 21:20:32,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:32,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:20:32,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:32,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:20:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:20:32,395 INFO L87 Difference]: Start difference. First operand 4580 states and 7624 transitions. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:35,987 INFO L93 Difference]: Finished difference Result 12589 states and 20966 transitions. [2023-12-25 21:20:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:20:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 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 411 [2023-12-25 21:20:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:35,999 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:20:35,999 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:20:36,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:20:36,005 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20673 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20673 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:36,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20673 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 21:20:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:20:36,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4581. [2023-12-25 21:20:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4580 states have (on average 1.6648471615720524) internal successors, (7625), 4580 states have internal predecessors, (7625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 7625 transitions. [2023-12-25 21:20:36,084 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 7625 transitions. Word has length 411 [2023-12-25 21:20:36,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:36,084 INFO L495 AbstractCegarLoop]: Abstraction has 4581 states and 7625 transitions. [2023-12-25 21:20:36,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:36,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 7625 transitions. [2023-12-25 21:20:36,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-12-25 21:20:36,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:36,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:36,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 21:20:36,086 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:36,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1078817543, now seen corresponding path program 1 times [2023-12-25 21:20:36,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:36,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447911411] [2023-12-25 21:20:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:36,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:36,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:36,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447911411] [2023-12-25 21:20:36,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447911411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:36,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:20:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115016337] [2023-12-25 21:20:36,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:36,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:20:36,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:36,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:20:36,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:20:36,544 INFO L87 Difference]: Start difference. First operand 4581 states and 7625 transitions. Second operand has 6 states, 6 states have (on average 68.5) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:39,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:39,004 INFO L93 Difference]: Finished difference Result 12769 states and 21234 transitions. [2023-12-25 21:20:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:20:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 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 411 [2023-12-25 21:20:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:39,040 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:20:39,041 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:20:39,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:20:39,049 INFO L413 NwaCegarLoop]: 5711 mSDtfsCounter, 27456 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 3863 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27456 SdHoareTripleChecker+Valid, 18284 SdHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:39,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27456 Valid, 18284 Invalid, 3953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3863 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 21:20:39,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:20:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4589. [2023-12-25 21:20:39,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4589 states, 4588 states have (on average 1.6645597210113339) internal successors, (7637), 4588 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4589 states to 4589 states and 7637 transitions. [2023-12-25 21:20:39,123 INFO L78 Accepts]: Start accepts. Automaton has 4589 states and 7637 transitions. Word has length 411 [2023-12-25 21:20:39,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:39,125 INFO L495 AbstractCegarLoop]: Abstraction has 4589 states and 7637 transitions. [2023-12-25 21:20:39,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4589 states and 7637 transitions. [2023-12-25 21:20:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-25 21:20:39,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:39,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:39,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 21:20:39,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:39,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:39,128 INFO L85 PathProgramCache]: Analyzing trace with hash -610358157, now seen corresponding path program 1 times [2023-12-25 21:20:39,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:39,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303864398] [2023-12-25 21:20:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:39,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:39,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:39,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303864398] [2023-12-25 21:20:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303864398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:39,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:39,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:20:39,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761811174] [2023-12-25 21:20:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:39,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:20:39,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:39,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:20:39,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:20:39,564 INFO L87 Difference]: Start difference. First operand 4589 states and 7637 transitions. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:43,326 INFO L93 Difference]: Finished difference Result 12769 states and 21233 transitions. [2023-12-25 21:20:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:20:43,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 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 412 [2023-12-25 21:20:43,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:43,351 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:20:43,352 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:20:43,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:20:43,358 INFO L413 NwaCegarLoop]: 5712 mSDtfsCounter, 20746 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5657 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20746 SdHoareTripleChecker+Valid, 23444 SdHoareTripleChecker+Invalid, 5747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:43,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20746 Valid, 23444 Invalid, 5747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5657 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 21:20:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:20:43,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4598. [2023-12-25 21:20:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4598 states, 4597 states have (on average 1.6643463128127038) internal successors, (7651), 4597 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 7651 transitions. [2023-12-25 21:20:43,522 INFO L78 Accepts]: Start accepts. Automaton has 4598 states and 7651 transitions. Word has length 412 [2023-12-25 21:20:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:43,523 INFO L495 AbstractCegarLoop]: Abstraction has 4598 states and 7651 transitions. [2023-12-25 21:20:43,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 4598 states and 7651 transitions. [2023-12-25 21:20:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-25 21:20:43,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:43,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:43,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 21:20:43,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:43,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1468848937, now seen corresponding path program 1 times [2023-12-25 21:20:43,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:43,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131167296] [2023-12-25 21:20:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:43,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:44,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:44,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131167296] [2023-12-25 21:20:44,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131167296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:44,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:44,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:20:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522753602] [2023-12-25 21:20:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:44,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:20:44,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:44,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:20:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:20:44,169 INFO L87 Difference]: Start difference. First operand 4598 states and 7651 transitions. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:47,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:47,712 INFO L93 Difference]: Finished difference Result 12589 states and 20963 transitions. [2023-12-25 21:20:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:20:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 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 413 [2023-12-25 21:20:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:47,736 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:20:47,736 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:20:47,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:20:47,743 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20653 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20653 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:47,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20653 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 21:20:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:20:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4599. [2023-12-25 21:20:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 4598 states have (on average 1.6642018268812526) internal successors, (7652), 4598 states have internal predecessors, (7652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 7652 transitions. [2023-12-25 21:20:47,810 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 7652 transitions. Word has length 413 [2023-12-25 21:20:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:47,811 INFO L495 AbstractCegarLoop]: Abstraction has 4599 states and 7652 transitions. [2023-12-25 21:20:47,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 7652 transitions. [2023-12-25 21:20:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-25 21:20:47,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:47,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:47,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 21:20:47,813 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:47,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:47,813 INFO L85 PathProgramCache]: Analyzing trace with hash 694767637, now seen corresponding path program 1 times [2023-12-25 21:20:47,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:47,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325260731] [2023-12-25 21:20:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:47,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:48,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:48,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325260731] [2023-12-25 21:20:48,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325260731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:48,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:48,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:20:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844737913] [2023-12-25 21:20:48,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:48,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:20:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:20:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:20:48,221 INFO L87 Difference]: Start difference. First operand 4599 states and 7652 transitions. Second operand has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:51,999 INFO L93 Difference]: Finished difference Result 12769 states and 21231 transitions. [2023-12-25 21:20:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:20:52,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 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 413 [2023-12-25 21:20:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:52,010 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:20:52,010 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:20:52,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:20:52,019 INFO L413 NwaCegarLoop]: 5714 mSDtfsCounter, 20735 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5655 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20735 SdHoareTripleChecker+Valid, 23446 SdHoareTripleChecker+Invalid, 5745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:52,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20735 Valid, 23446 Invalid, 5745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5655 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 21:20:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:20:52,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4607. [2023-12-25 21:20:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4607 states, 4606 states have (on average 1.6639166304819801) internal successors, (7664), 4606 states have internal predecessors, (7664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 7664 transitions. [2023-12-25 21:20:52,089 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 7664 transitions. Word has length 413 [2023-12-25 21:20:52,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:52,089 INFO L495 AbstractCegarLoop]: Abstraction has 4607 states and 7664 transitions. [2023-12-25 21:20:52,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 7664 transitions. [2023-12-25 21:20:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-25 21:20:52,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:52,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:52,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 21:20:52,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:52,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:52,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2080431869, now seen corresponding path program 1 times [2023-12-25 21:20:52,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:52,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536716930] [2023-12-25 21:20:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:52,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:52,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536716930] [2023-12-25 21:20:52,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536716930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:52,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:52,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:20:52,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602960673] [2023-12-25 21:20:52,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:52,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:20:52,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:52,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:20:52,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:20:52,750 INFO L87 Difference]: Start difference. First operand 4607 states and 7664 transitions. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:56,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:20:56,296 INFO L93 Difference]: Finished difference Result 12589 states and 20961 transitions. [2023-12-25 21:20:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:20:56,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 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 414 [2023-12-25 21:20:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:20:56,303 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:20:56,303 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:20:56,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:20:56,308 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20642 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20642 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 21:20:56,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20642 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 21:20:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:20:56,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4608. [2023-12-25 21:20:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 4607 states have (on average 1.663772520078142) internal successors, (7665), 4607 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 7665 transitions. [2023-12-25 21:20:56,361 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 7665 transitions. Word has length 414 [2023-12-25 21:20:56,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:20:56,362 INFO L495 AbstractCegarLoop]: Abstraction has 4608 states and 7665 transitions. [2023-12-25 21:20:56,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:20:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 7665 transitions. [2023-12-25 21:20:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-12-25 21:20:56,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:20:56,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:20:56,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 21:20:56,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:20:56,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:20:56,364 INFO L85 PathProgramCache]: Analyzing trace with hash -691137855, now seen corresponding path program 1 times [2023-12-25 21:20:56,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:20:56,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114944943] [2023-12-25 21:20:56,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:20:56,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:20:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:20:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:20:56,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:20:56,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114944943] [2023-12-25 21:20:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114944943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:20:56,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:20:56,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:20:56,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203762263] [2023-12-25 21:20:56,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:20:56,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:20:56,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:20:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:20:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:20:56,760 INFO L87 Difference]: Start difference. First operand 4608 states and 7665 transitions. Second operand has 6 states, 6 states have (on average 69.0) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:00,496 INFO L93 Difference]: Finished difference Result 12769 states and 21229 transitions. [2023-12-25 21:21:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:21:00,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.0) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 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 414 [2023-12-25 21:21:00,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:00,504 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:21:00,504 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:21:00,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:21:00,510 INFO L413 NwaCegarLoop]: 5716 mSDtfsCounter, 20724 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5653 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20724 SdHoareTripleChecker+Valid, 23448 SdHoareTripleChecker+Invalid, 5743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:00,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20724 Valid, 23448 Invalid, 5743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5653 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 21:21:00,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:21:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4616. [2023-12-25 21:21:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 1.6634886240520044) internal successors, (7677), 4615 states have internal predecessors, (7677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 7677 transitions. [2023-12-25 21:21:00,573 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 7677 transitions. Word has length 414 [2023-12-25 21:21:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:00,573 INFO L495 AbstractCegarLoop]: Abstraction has 4616 states and 7677 transitions. [2023-12-25 21:21:00,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.0) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 7677 transitions. [2023-12-25 21:21:00,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-25 21:21:00,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:00,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:00,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 21:21:00,575 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:00,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash -51895835, now seen corresponding path program 1 times [2023-12-25 21:21:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:00,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60162405] [2023-12-25 21:21:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:01,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:01,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60162405] [2023-12-25 21:21:01,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60162405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:01,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:01,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:21:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40735650] [2023-12-25 21:21:01,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:01,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:21:01,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:01,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:21:01,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:21:01,169 INFO L87 Difference]: Start difference. First operand 4616 states and 7677 transitions. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:04,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:04,663 INFO L93 Difference]: Finished difference Result 12589 states and 20959 transitions. [2023-12-25 21:21:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:21:04,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 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 415 [2023-12-25 21:21:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:04,670 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:21:04,670 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:21:04,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:21:04,681 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20631 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20631 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:04,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20631 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 21:21:04,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:21:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4617. [2023-12-25 21:21:04,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4617 states, 4616 states have (on average 1.6633448873483536) internal successors, (7678), 4616 states have internal predecessors, (7678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:04,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7678 transitions. [2023-12-25 21:21:04,743 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7678 transitions. Word has length 415 [2023-12-25 21:21:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:04,744 INFO L495 AbstractCegarLoop]: Abstraction has 4617 states and 7678 transitions. [2023-12-25 21:21:04,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7678 transitions. [2023-12-25 21:21:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-25 21:21:04,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:04,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:04,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 21:21:04,746 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:04,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1958299101, now seen corresponding path program 1 times [2023-12-25 21:21:04,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:04,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133221321] [2023-12-25 21:21:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:04,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:05,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:05,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133221321] [2023-12-25 21:21:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133221321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:05,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:05,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:21:05,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39062096] [2023-12-25 21:21:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:05,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:21:05,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:05,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:21:05,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:21:05,105 INFO L87 Difference]: Start difference. First operand 4617 states and 7678 transitions. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:07,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:07,537 INFO L93 Difference]: Finished difference Result 12769 states and 21227 transitions. [2023-12-25 21:21:07,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:21:07,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 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 415 [2023-12-25 21:21:07,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:07,545 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:21:07,546 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:21:07,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:21:07,551 INFO L413 NwaCegarLoop]: 5718 mSDtfsCounter, 27379 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27379 SdHoareTripleChecker+Valid, 18291 SdHoareTripleChecker+Invalid, 3946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:07,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27379 Valid, 18291 Invalid, 3946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3856 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 21:21:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:21:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4625. [2023-12-25 21:21:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4624 states have (on average 1.6630622837370241) internal successors, (7690), 4624 states have internal predecessors, (7690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 7690 transitions. [2023-12-25 21:21:07,613 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 7690 transitions. Word has length 415 [2023-12-25 21:21:07,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:07,614 INFO L495 AbstractCegarLoop]: Abstraction has 4625 states and 7690 transitions. [2023-12-25 21:21:07,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 7690 transitions. [2023-12-25 21:21:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-12-25 21:21:07,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:07,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:07,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 21:21:07,617 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:07,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:07,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1736316431, now seen corresponding path program 1 times [2023-12-25 21:21:07,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:07,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030764194] [2023-12-25 21:21:07,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:07,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:07,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:07,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030764194] [2023-12-25 21:21:07,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030764194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:07,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:07,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:21:07,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183855924] [2023-12-25 21:21:07,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:07,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:21:07,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:07,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:21:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:21:07,996 INFO L87 Difference]: Start difference. First operand 4625 states and 7690 transitions. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:10,515 INFO L93 Difference]: Finished difference Result 12769 states and 21226 transitions. [2023-12-25 21:21:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:21:10,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 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 416 [2023-12-25 21:21:10,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:10,520 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:21:10,520 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:21:10,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:21:10,523 INFO L413 NwaCegarLoop]: 5719 mSDtfsCounter, 27362 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27362 SdHoareTripleChecker+Valid, 18292 SdHoareTripleChecker+Invalid, 3945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:10,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27362 Valid, 18292 Invalid, 3945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3855 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 21:21:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:21:10,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4634. [2023-12-25 21:21:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4634 states, 4633 states have (on average 1.662853442693719) internal successors, (7704), 4633 states have internal predecessors, (7704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4634 states to 4634 states and 7704 transitions. [2023-12-25 21:21:10,577 INFO L78 Accepts]: Start accepts. Automaton has 4634 states and 7704 transitions. Word has length 416 [2023-12-25 21:21:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:10,577 INFO L495 AbstractCegarLoop]: Abstraction has 4634 states and 7704 transitions. [2023-12-25 21:21:10,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4634 states and 7704 transitions. [2023-12-25 21:21:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-25 21:21:10,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:10,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:10,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 21:21:10,580 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:10,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:10,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1144302579, now seen corresponding path program 1 times [2023-12-25 21:21:10,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:10,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286717685] [2023-12-25 21:21:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:11,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:11,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286717685] [2023-12-25 21:21:11,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286717685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:11,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:11,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:21:11,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077955834] [2023-12-25 21:21:11,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:11,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:21:11,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:21:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:21:11,103 INFO L87 Difference]: Start difference. First operand 4634 states and 7704 transitions. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:14,620 INFO L93 Difference]: Finished difference Result 12589 states and 20956 transitions. [2023-12-25 21:21:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:21:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 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 417 [2023-12-25 21:21:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:14,629 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:21:14,629 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:21:14,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:21:14,635 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20611 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20611 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:14,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20611 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 21:21:14,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:21:14,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4635. [2023-12-25 21:21:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4635 states, 4634 states have (on average 1.6627104013810963) internal successors, (7705), 4634 states have internal predecessors, (7705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 7705 transitions. [2023-12-25 21:21:14,696 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 7705 transitions. Word has length 417 [2023-12-25 21:21:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:14,697 INFO L495 AbstractCegarLoop]: Abstraction has 4635 states and 7705 transitions. [2023-12-25 21:21:14,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 7705 transitions. [2023-12-25 21:21:14,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-12-25 21:21:14,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:14,699 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:14,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-25 21:21:14,700 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:14,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:14,700 INFO L85 PathProgramCache]: Analyzing trace with hash -814272207, now seen corresponding path program 1 times [2023-12-25 21:21:14,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:14,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095781142] [2023-12-25 21:21:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:14,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:15,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:15,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095781142] [2023-12-25 21:21:15,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095781142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:15,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:15,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:21:15,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767868482] [2023-12-25 21:21:15,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:15,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:21:15,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:15,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:21:15,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:21:15,101 INFO L87 Difference]: Start difference. First operand 4635 states and 7705 transitions. Second operand has 6 states, 6 states have (on average 69.5) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:18,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:18,869 INFO L93 Difference]: Finished difference Result 12769 states and 21224 transitions. [2023-12-25 21:21:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:21:18,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 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 417 [2023-12-25 21:21:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:18,878 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:21:18,878 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:21:18,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:21:18,884 INFO L413 NwaCegarLoop]: 5721 mSDtfsCounter, 20693 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5648 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20693 SdHoareTripleChecker+Valid, 23453 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:18,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20693 Valid, 23453 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5648 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 21:21:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:21:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4643. [2023-12-25 21:21:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 4642 states have (on average 1.662429987074537) internal successors, (7717), 4642 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 7717 transitions. [2023-12-25 21:21:18,944 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 7717 transitions. Word has length 417 [2023-12-25 21:21:18,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:18,944 INFO L495 AbstractCegarLoop]: Abstraction has 4643 states and 7717 transitions. [2023-12-25 21:21:18,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 7717 transitions. [2023-12-25 21:21:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-25 21:21:18,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:18,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:18,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 21:21:18,946 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:18,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash 392522399, now seen corresponding path program 1 times [2023-12-25 21:21:18,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:18,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812261780] [2023-12-25 21:21:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:19,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:19,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812261780] [2023-12-25 21:21:19,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812261780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:19,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:19,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:21:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502654439] [2023-12-25 21:21:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:19,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:21:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:21:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:21:19,541 INFO L87 Difference]: Start difference. First operand 4643 states and 7717 transitions. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:23,074 INFO L93 Difference]: Finished difference Result 12589 states and 20954 transitions. [2023-12-25 21:21:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:21:23,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 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 418 [2023-12-25 21:21:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:23,082 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:21:23,082 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:21:23,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:21:23,088 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20600 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20600 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:23,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20600 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 21:21:23,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:21:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4644. [2023-12-25 21:21:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4644 states, 4643 states have (on average 1.6622873142364851) internal successors, (7718), 4643 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4644 states to 4644 states and 7718 transitions. [2023-12-25 21:21:23,146 INFO L78 Accepts]: Start accepts. Automaton has 4644 states and 7718 transitions. Word has length 418 [2023-12-25 21:21:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:23,146 INFO L495 AbstractCegarLoop]: Abstraction has 4644 states and 7718 transitions. [2023-12-25 21:21:23,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 4644 states and 7718 transitions. [2023-12-25 21:21:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-25 21:21:23,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:23,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:23,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 21:21:23,148 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:23,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:23,149 INFO L85 PathProgramCache]: Analyzing trace with hash -749980067, now seen corresponding path program 1 times [2023-12-25 21:21:23,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:23,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491520082] [2023-12-25 21:21:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:23,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:23,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:23,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491520082] [2023-12-25 21:21:23,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491520082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:23,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:23,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:21:23,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074612714] [2023-12-25 21:21:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:23,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:21:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:21:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:21:23,551 INFO L87 Difference]: Start difference. First operand 4644 states and 7718 transitions. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:25,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:25,990 INFO L93 Difference]: Finished difference Result 12769 states and 21222 transitions. [2023-12-25 21:21:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:21:25,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 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 418 [2023-12-25 21:21:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:25,999 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:21:25,999 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:21:26,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:21:26,005 INFO L413 NwaCegarLoop]: 5723 mSDtfsCounter, 27322 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 3851 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27322 SdHoareTripleChecker+Valid, 18296 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:26,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27322 Valid, 18296 Invalid, 3941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3851 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 21:21:26,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:21:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4652. [2023-12-25 21:21:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4652 states, 4651 states have (on average 1.66200817028596) internal successors, (7730), 4651 states have internal predecessors, (7730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 7730 transitions. [2023-12-25 21:21:26,052 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 7730 transitions. Word has length 418 [2023-12-25 21:21:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:26,052 INFO L495 AbstractCegarLoop]: Abstraction has 4652 states and 7730 transitions. [2023-12-25 21:21:26,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:26,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 7730 transitions. [2023-12-25 21:21:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-25 21:21:26,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:26,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:26,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 21:21:26,055 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:26,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:26,055 INFO L85 PathProgramCache]: Analyzing trace with hash 392839937, now seen corresponding path program 1 times [2023-12-25 21:21:26,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:26,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90022503] [2023-12-25 21:21:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:26,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:26,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:26,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90022503] [2023-12-25 21:21:26,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90022503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:26,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:26,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:21:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261538087] [2023-12-25 21:21:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:26,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:21:26,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:21:26,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:21:26,569 INFO L87 Difference]: Start difference. First operand 4652 states and 7730 transitions. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:30,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:30,160 INFO L93 Difference]: Finished difference Result 12589 states and 20952 transitions. [2023-12-25 21:21:30,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:21:30,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 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 419 [2023-12-25 21:21:30,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:30,168 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:21:30,168 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:21:30,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:21:30,173 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20589 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20589 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:30,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20589 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-25 21:21:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:21:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4653. [2023-12-25 21:21:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 4652 states have (on average 1.661865864144454) internal successors, (7731), 4652 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7731 transitions. [2023-12-25 21:21:30,220 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7731 transitions. Word has length 419 [2023-12-25 21:21:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:30,221 INFO L495 AbstractCegarLoop]: Abstraction has 4653 states and 7731 transitions. [2023-12-25 21:21:30,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7731 transitions. [2023-12-25 21:21:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-12-25 21:21:30,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:30,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:30,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-25 21:21:30,223 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:30,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1280062783, now seen corresponding path program 1 times [2023-12-25 21:21:30,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577016638] [2023-12-25 21:21:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:30,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:30,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:30,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577016638] [2023-12-25 21:21:30,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577016638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:30,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:30,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:21:30,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640331327] [2023-12-25 21:21:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:30,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:21:30,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:30,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:21:30,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:21:30,601 INFO L87 Difference]: Start difference. First operand 4653 states and 7731 transitions. Second operand has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:34,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:34,324 INFO L93 Difference]: Finished difference Result 12769 states and 21220 transitions. [2023-12-25 21:21:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:21:34,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 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 419 [2023-12-25 21:21:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:34,332 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:21:34,332 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:21:34,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:21:34,336 INFO L413 NwaCegarLoop]: 5725 mSDtfsCounter, 20671 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5644 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20671 SdHoareTripleChecker+Valid, 23457 SdHoareTripleChecker+Invalid, 5734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:34,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20671 Valid, 23457 Invalid, 5734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5644 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 21:21:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:21:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4661. [2023-12-25 21:21:34,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4661 states, 4660 states have (on average 1.661587982832618) internal successors, (7743), 4660 states have internal predecessors, (7743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 7743 transitions. [2023-12-25 21:21:34,381 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 7743 transitions. Word has length 419 [2023-12-25 21:21:34,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:34,382 INFO L495 AbstractCegarLoop]: Abstraction has 4661 states and 7743 transitions. [2023-12-25 21:21:34,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.83333333333333) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 7743 transitions. [2023-12-25 21:21:34,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-12-25 21:21:34,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:34,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:34,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 21:21:34,384 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:34,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1368781739, now seen corresponding path program 1 times [2023-12-25 21:21:34,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:34,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822075745] [2023-12-25 21:21:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:34,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:34,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:34,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822075745] [2023-12-25 21:21:34,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822075745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:34,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:34,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:21:34,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391923177] [2023-12-25 21:21:34,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:34,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:21:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:34,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:21:34,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:21:34,760 INFO L87 Difference]: Start difference. First operand 4661 states and 7743 transitions. Second operand has 6 states, 6 states have (on average 70.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:38,572 INFO L93 Difference]: Finished difference Result 12769 states and 21219 transitions. [2023-12-25 21:21:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:21:38,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 70.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 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 420 [2023-12-25 21:21:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:38,579 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:21:38,580 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:21:38,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:21:38,582 INFO L413 NwaCegarLoop]: 5726 mSDtfsCounter, 20662 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5643 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20662 SdHoareTripleChecker+Valid, 23458 SdHoareTripleChecker+Invalid, 5733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:38,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20662 Valid, 23458 Invalid, 5733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5643 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 21:21:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:21:38,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4670. [2023-12-25 21:21:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4670 states, 4669 states have (on average 1.6613835939173272) internal successors, (7757), 4669 states have internal predecessors, (7757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 7757 transitions. [2023-12-25 21:21:38,626 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 7757 transitions. Word has length 420 [2023-12-25 21:21:38,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:38,627 INFO L495 AbstractCegarLoop]: Abstraction has 4670 states and 7757 transitions. [2023-12-25 21:21:38,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 7757 transitions. [2023-12-25 21:21:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-12-25 21:21:38,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:38,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:38,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-25 21:21:38,629 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:38,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1671796977, now seen corresponding path program 1 times [2023-12-25 21:21:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:38,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264430700] [2023-12-25 21:21:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:38,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:39,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264430700] [2023-12-25 21:21:39,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264430700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:39,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:39,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:21:39,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193231627] [2023-12-25 21:21:39,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:39,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:21:39,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:21:39,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:21:39,139 INFO L87 Difference]: Start difference. First operand 4670 states and 7757 transitions. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:42,654 INFO L93 Difference]: Finished difference Result 12589 states and 20949 transitions. [2023-12-25 21:21:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:21:42,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 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 421 [2023-12-25 21:21:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:42,669 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:21:42,669 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:21:42,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:21:42,676 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20569 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20569 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:42,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20569 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 21:21:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:21:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4671. [2023-12-25 21:21:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4671 states, 4670 states have (on average 1.6612419700214134) internal successors, (7758), 4670 states have internal predecessors, (7758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 7758 transitions. [2023-12-25 21:21:42,733 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 7758 transitions. Word has length 421 [2023-12-25 21:21:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:42,733 INFO L495 AbstractCegarLoop]: Abstraction has 4671 states and 7758 transitions. [2023-12-25 21:21:42,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:42,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 7758 transitions. [2023-12-25 21:21:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-12-25 21:21:42,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:42,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:42,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 21:21:42,735 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:42,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash -992524723, now seen corresponding path program 1 times [2023-12-25 21:21:42,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:42,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182483701] [2023-12-25 21:21:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:42,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:43,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182483701] [2023-12-25 21:21:43,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182483701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:43,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:43,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:21:43,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124604920] [2023-12-25 21:21:43,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:43,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:21:43,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:21:43,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:21:43,122 INFO L87 Difference]: Start difference. First operand 4671 states and 7758 transitions. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:46,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:46,943 INFO L93 Difference]: Finished difference Result 12769 states and 21217 transitions. [2023-12-25 21:21:46,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:21:46,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 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 421 [2023-12-25 21:21:46,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:46,948 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:21:46,949 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:21:46,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:21:46,951 INFO L413 NwaCegarLoop]: 5728 mSDtfsCounter, 20651 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5641 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20651 SdHoareTripleChecker+Valid, 23460 SdHoareTripleChecker+Invalid, 5731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:46,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20651 Valid, 23460 Invalid, 5731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 5641 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 21:21:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:21:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4679. [2023-12-25 21:21:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4679 states, 4678 states have (on average 1.6609662248824284) internal successors, (7770), 4678 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4679 states to 4679 states and 7770 transitions. [2023-12-25 21:21:46,992 INFO L78 Accepts]: Start accepts. Automaton has 4679 states and 7770 transitions. Word has length 421 [2023-12-25 21:21:46,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:46,992 INFO L495 AbstractCegarLoop]: Abstraction has 4679 states and 7770 transitions. [2023-12-25 21:21:46,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:46,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4679 states and 7770 transitions. [2023-12-25 21:21:46,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-25 21:21:46,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:46,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:46,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-25 21:21:46,995 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:46,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1225533499, now seen corresponding path program 1 times [2023-12-25 21:21:46,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:46,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768317063] [2023-12-25 21:21:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:46,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:47,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:47,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768317063] [2023-12-25 21:21:47,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768317063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:47,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:47,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:21:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657710983] [2023-12-25 21:21:47,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:47,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:21:47,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:21:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:21:47,506 INFO L87 Difference]: Start difference. First operand 4679 states and 7770 transitions. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:51,001 INFO L93 Difference]: Finished difference Result 12589 states and 20947 transitions. [2023-12-25 21:21:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:21:51,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 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 422 [2023-12-25 21:21:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:51,010 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:21:51,010 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:21:51,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:21:51,025 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20558 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20558 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:51,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20558 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 21:21:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:21:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4680. [2023-12-25 21:21:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4680 states, 4679 states have (on average 1.6608249625988458) internal successors, (7771), 4679 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4680 states to 4680 states and 7771 transitions. [2023-12-25 21:21:51,079 INFO L78 Accepts]: Start accepts. Automaton has 4680 states and 7771 transitions. Word has length 422 [2023-12-25 21:21:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:51,080 INFO L495 AbstractCegarLoop]: Abstraction has 4680 states and 7771 transitions. [2023-12-25 21:21:51,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4680 states and 7771 transitions. [2023-12-25 21:21:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-25 21:21:51,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:51,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:51,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-25 21:21:51,082 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:51,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:51,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1266208249, now seen corresponding path program 1 times [2023-12-25 21:21:51,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:51,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474566954] [2023-12-25 21:21:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:51,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:51,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:51,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474566954] [2023-12-25 21:21:51,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474566954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:51,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:51,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:21:51,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041078934] [2023-12-25 21:21:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:51,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:21:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:21:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:21:51,472 INFO L87 Difference]: Start difference. First operand 4680 states and 7771 transitions. Second operand has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:53,896 INFO L93 Difference]: Finished difference Result 12769 states and 21215 transitions. [2023-12-25 21:21:53,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:21:53,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 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 422 [2023-12-25 21:21:53,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:53,903 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:21:53,903 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:21:53,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:21:53,911 INFO L413 NwaCegarLoop]: 5730 mSDtfsCounter, 27245 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 3844 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27245 SdHoareTripleChecker+Valid, 18303 SdHoareTripleChecker+Invalid, 3934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:53,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27245 Valid, 18303 Invalid, 3934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3844 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 21:21:53,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:21:53,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4688. [2023-12-25 21:21:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4688 states, 4687 states have (on average 1.6605504587155964) internal successors, (7783), 4687 states have internal predecessors, (7783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4688 states to 4688 states and 7783 transitions. [2023-12-25 21:21:53,956 INFO L78 Accepts]: Start accepts. Automaton has 4688 states and 7783 transitions. Word has length 422 [2023-12-25 21:21:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:53,956 INFO L495 AbstractCegarLoop]: Abstraction has 4688 states and 7783 transitions. [2023-12-25 21:21:53,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 4688 states and 7783 transitions. [2023-12-25 21:21:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-25 21:21:53,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:53,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:53,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-25 21:21:53,959 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:53,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:53,959 INFO L85 PathProgramCache]: Analyzing trace with hash 93755421, now seen corresponding path program 1 times [2023-12-25 21:21:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:53,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890362901] [2023-12-25 21:21:53,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:53,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:54,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:54,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890362901] [2023-12-25 21:21:54,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890362901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:54,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:54,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:21:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404271796] [2023-12-25 21:21:54,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:54,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:21:54,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:21:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:21:54,537 INFO L87 Difference]: Start difference. First operand 4688 states and 7783 transitions. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:58,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:21:58,043 INFO L93 Difference]: Finished difference Result 12589 states and 20945 transitions. [2023-12-25 21:21:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:21:58,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 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 423 [2023-12-25 21:21:58,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:21:58,051 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:21:58,052 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:21:58,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:21:58,056 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20547 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20547 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:21:58,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20547 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 21:21:58,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:21:58,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4689. [2023-12-25 21:21:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4688 states have (on average 1.6604095563139931) internal successors, (7784), 4688 states have internal predecessors, (7784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 7784 transitions. [2023-12-25 21:21:58,108 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 7784 transitions. Word has length 423 [2023-12-25 21:21:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:21:58,108 INFO L495 AbstractCegarLoop]: Abstraction has 4689 states and 7784 transitions. [2023-12-25 21:21:58,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:21:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 7784 transitions. [2023-12-25 21:21:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-25 21:21:58,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:21:58,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:21:58,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-25 21:21:58,110 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:21:58,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:21:58,111 INFO L85 PathProgramCache]: Analyzing trace with hash -387324837, now seen corresponding path program 1 times [2023-12-25 21:21:58,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:21:58,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080432994] [2023-12-25 21:21:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:21:58,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:21:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:21:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:21:58,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:21:58,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080432994] [2023-12-25 21:21:58,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080432994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:21:58,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:21:58,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:21:58,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305484026] [2023-12-25 21:21:58,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:21:58,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:21:58,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:21:58,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:21:58,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:21:58,496 INFO L87 Difference]: Start difference. First operand 4689 states and 7784 transitions. Second operand has 6 states, 6 states have (on average 70.5) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:00,911 INFO L93 Difference]: Finished difference Result 12769 states and 21213 transitions. [2023-12-25 21:22:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:22:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 70.5) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 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 423 [2023-12-25 21:22:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:00,919 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:22:00,919 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:22:00,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:22:00,940 INFO L413 NwaCegarLoop]: 5732 mSDtfsCounter, 27225 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 3842 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27225 SdHoareTripleChecker+Valid, 18305 SdHoareTripleChecker+Invalid, 3932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:00,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27225 Valid, 18305 Invalid, 3932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3842 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-25 21:22:00,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:22:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4697. [2023-12-25 21:22:00,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4697 states, 4696 states have (on average 1.660136286201022) internal successors, (7796), 4696 states have internal predecessors, (7796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 7796 transitions. [2023-12-25 21:22:00,990 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 7796 transitions. Word has length 423 [2023-12-25 21:22:00,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:00,990 INFO L495 AbstractCegarLoop]: Abstraction has 4697 states and 7796 transitions. [2023-12-25 21:22:00,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.5) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 7796 transitions. [2023-12-25 21:22:00,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-25 21:22:00,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:00,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:00,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-25 21:22:00,992 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:00,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:00,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1680718521, now seen corresponding path program 1 times [2023-12-25 21:22:00,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:00,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946088832] [2023-12-25 21:22:00,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:00,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:01,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:01,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946088832] [2023-12-25 21:22:01,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946088832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:01,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:01,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:22:01,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953605694] [2023-12-25 21:22:01,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:01,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:22:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:01,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:22:01,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:22:01,374 INFO L87 Difference]: Start difference. First operand 4697 states and 7796 transitions. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:05,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:05,165 INFO L93 Difference]: Finished difference Result 12769 states and 21212 transitions. [2023-12-25 21:22:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:22:05,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 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 424 [2023-12-25 21:22:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:05,173 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:22:05,173 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:22:05,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:22:05,178 INFO L413 NwaCegarLoop]: 5733 mSDtfsCounter, 20620 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5636 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20620 SdHoareTripleChecker+Valid, 23465 SdHoareTripleChecker+Invalid, 5726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:05,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20620 Valid, 23465 Invalid, 5726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5636 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 21:22:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:22:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4706. [2023-12-25 21:22:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 4705 states have (on average 1.6599362380446334) internal successors, (7810), 4705 states have internal predecessors, (7810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 7810 transitions. [2023-12-25 21:22:05,230 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 7810 transitions. Word has length 424 [2023-12-25 21:22:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:05,231 INFO L495 AbstractCegarLoop]: Abstraction has 4706 states and 7810 transitions. [2023-12-25 21:22:05,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 7810 transitions. [2023-12-25 21:22:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-25 21:22:05,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:05,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:05,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-25 21:22:05,233 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:05,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:05,234 INFO L85 PathProgramCache]: Analyzing trace with hash 309351979, now seen corresponding path program 1 times [2023-12-25 21:22:05,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:05,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452732098] [2023-12-25 21:22:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:05,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452732098] [2023-12-25 21:22:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452732098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:05,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912152506] [2023-12-25 21:22:05,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:05,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:22:05,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:05,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:22:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:05,757 INFO L87 Difference]: Start difference. First operand 4706 states and 7810 transitions. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:09,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:09,264 INFO L93 Difference]: Finished difference Result 12589 states and 20942 transitions. [2023-12-25 21:22:09,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:22:09,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 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 425 [2023-12-25 21:22:09,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:09,271 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:22:09,271 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:22:09,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:22:09,275 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20527 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20527 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:09,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20527 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 21:22:09,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:22:09,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4707. [2023-12-25 21:22:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 4706 states have (on average 1.6597960050998726) internal successors, (7811), 4706 states have internal predecessors, (7811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 7811 transitions. [2023-12-25 21:22:09,322 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 7811 transitions. Word has length 425 [2023-12-25 21:22:09,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:09,322 INFO L495 AbstractCegarLoop]: Abstraction has 4707 states and 7811 transitions. [2023-12-25 21:22:09,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 7811 transitions. [2023-12-25 21:22:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-25 21:22:09,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:09,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:09,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-25 21:22:09,324 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:09,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash -720007319, now seen corresponding path program 1 times [2023-12-25 21:22:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341359757] [2023-12-25 21:22:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:09,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:09,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341359757] [2023-12-25 21:22:09,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341359757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:09,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:09,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:22:09,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566429908] [2023-12-25 21:22:09,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:09,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:22:09,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:09,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:22:09,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:22:09,708 INFO L87 Difference]: Start difference. First operand 4707 states and 7811 transitions. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:13,489 INFO L93 Difference]: Finished difference Result 12769 states and 21210 transitions. [2023-12-25 21:22:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:22:13,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 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 425 [2023-12-25 21:22:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:13,495 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:22:13,495 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:22:13,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:22:13,497 INFO L413 NwaCegarLoop]: 5735 mSDtfsCounter, 20609 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5634 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20609 SdHoareTripleChecker+Valid, 23467 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:13,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20609 Valid, 23467 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5634 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-25 21:22:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:22:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4715. [2023-12-25 21:22:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4715 states, 4714 states have (on average 1.6595248196860415) internal successors, (7823), 4714 states have internal predecessors, (7823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 7823 transitions. [2023-12-25 21:22:13,538 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 7823 transitions. Word has length 425 [2023-12-25 21:22:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:13,539 INFO L495 AbstractCegarLoop]: Abstraction has 4715 states and 7823 transitions. [2023-12-25 21:22:13,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 7823 transitions. [2023-12-25 21:22:13,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-25 21:22:13,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:13,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:13,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-25 21:22:13,541 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:13,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1092658729, now seen corresponding path program 1 times [2023-12-25 21:22:13,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:13,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274482356] [2023-12-25 21:22:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:14,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:14,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274482356] [2023-12-25 21:22:14,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274482356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:14,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:14,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:14,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751090249] [2023-12-25 21:22:14,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:14,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:22:14,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:14,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:22:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:14,064 INFO L87 Difference]: Start difference. First operand 4715 states and 7823 transitions. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:17,558 INFO L93 Difference]: Finished difference Result 12589 states and 20940 transitions. [2023-12-25 21:22:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:22:17,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 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 426 [2023-12-25 21:22:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:17,566 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:22:17,566 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:22:17,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:22:17,570 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20516 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20516 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:17,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20516 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 21:22:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:22:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4716. [2023-12-25 21:22:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4716 states, 4715 states have (on average 1.6593849416755038) internal successors, (7824), 4715 states have internal predecessors, (7824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 7824 transitions. [2023-12-25 21:22:17,617 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 7824 transitions. Word has length 426 [2023-12-25 21:22:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:17,617 INFO L495 AbstractCegarLoop]: Abstraction has 4716 states and 7824 transitions. [2023-12-25 21:22:17,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 7824 transitions. [2023-12-25 21:22:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-25 21:22:17,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:17,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:17,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-25 21:22:17,619 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:17,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:17,620 INFO L85 PathProgramCache]: Analyzing trace with hash -817899115, now seen corresponding path program 1 times [2023-12-25 21:22:17,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:17,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968333779] [2023-12-25 21:22:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:17,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:18,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:18,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968333779] [2023-12-25 21:22:18,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968333779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:18,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:18,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:22:18,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719506452] [2023-12-25 21:22:18,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:18,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:22:18,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:22:18,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:22:18,016 INFO L87 Difference]: Start difference. First operand 4716 states and 7824 transitions. Second operand has 6 states, 6 states have (on average 71.0) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:21,758 INFO L93 Difference]: Finished difference Result 12769 states and 21208 transitions. [2023-12-25 21:22:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:22:21,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 71.0) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 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 426 [2023-12-25 21:22:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:21,766 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:22:21,766 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:22:21,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:22:21,771 INFO L413 NwaCegarLoop]: 5737 mSDtfsCounter, 20598 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5632 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20598 SdHoareTripleChecker+Valid, 23469 SdHoareTripleChecker+Invalid, 5722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:21,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20598 Valid, 23469 Invalid, 5722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5632 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 21:22:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:22:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4724. [2023-12-25 21:22:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4724 states, 4723 states have (on average 1.6591149692991742) internal successors, (7836), 4723 states have internal predecessors, (7836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4724 states to 4724 states and 7836 transitions. [2023-12-25 21:22:21,904 INFO L78 Accepts]: Start accepts. Automaton has 4724 states and 7836 transitions. Word has length 426 [2023-12-25 21:22:21,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:21,905 INFO L495 AbstractCegarLoop]: Abstraction has 4724 states and 7836 transitions. [2023-12-25 21:22:21,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.0) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4724 states and 7836 transitions. [2023-12-25 21:22:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-25 21:22:21,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:21,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:21,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-25 21:22:21,907 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:21,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:21,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1896275655, now seen corresponding path program 1 times [2023-12-25 21:22:21,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:21,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446831047] [2023-12-25 21:22:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:22,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:22,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446831047] [2023-12-25 21:22:22,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446831047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:22,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:22,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:22,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476676287] [2023-12-25 21:22:22,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:22,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:22:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:22:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:22,419 INFO L87 Difference]: Start difference. First operand 4724 states and 7836 transitions. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:25,918 INFO L93 Difference]: Finished difference Result 12589 states and 20938 transitions. [2023-12-25 21:22:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:22:25,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 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 427 [2023-12-25 21:22:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:25,929 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:22:25,929 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:22:25,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:22:25,935 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20505 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20505 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:25,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20505 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 21:22:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:22:25,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4725. [2023-12-25 21:22:25,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4724 states have (on average 1.6589754445385267) internal successors, (7837), 4724 states have internal predecessors, (7837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 7837 transitions. [2023-12-25 21:22:25,993 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 7837 transitions. Word has length 427 [2023-12-25 21:22:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:25,993 INFO L495 AbstractCegarLoop]: Abstraction has 4725 states and 7837 transitions. [2023-12-25 21:22:25,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 7837 transitions. [2023-12-25 21:22:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-25 21:22:25,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:25,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:25,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-25 21:22:25,995 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:25,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1834236041, now seen corresponding path program 1 times [2023-12-25 21:22:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:25,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126941730] [2023-12-25 21:22:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:25,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:26,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126941730] [2023-12-25 21:22:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126941730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:26,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:26,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:22:26,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439393085] [2023-12-25 21:22:26,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:26,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:22:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:22:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:22:26,405 INFO L87 Difference]: Start difference. First operand 4725 states and 7837 transitions. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:28,836 INFO L93 Difference]: Finished difference Result 12769 states and 21206 transitions. [2023-12-25 21:22:28,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:22:28,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 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 427 [2023-12-25 21:22:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:28,844 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:22:28,844 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:22:28,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:22:28,849 INFO L413 NwaCegarLoop]: 5739 mSDtfsCounter, 27148 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27148 SdHoareTripleChecker+Valid, 18312 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:28,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27148 Valid, 18312 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 21:22:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:22:28,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4733. [2023-12-25 21:22:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4733 states, 4732 states have (on average 1.658706677937447) internal successors, (7849), 4732 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4733 states to 4733 states and 7849 transitions. [2023-12-25 21:22:28,899 INFO L78 Accepts]: Start accepts. Automaton has 4733 states and 7849 transitions. Word has length 427 [2023-12-25 21:22:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:28,899 INFO L495 AbstractCegarLoop]: Abstraction has 4733 states and 7849 transitions. [2023-12-25 21:22:28,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4733 states and 7849 transitions. [2023-12-25 21:22:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-25 21:22:28,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:28,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:28,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-25 21:22:28,901 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:28,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1679756003, now seen corresponding path program 1 times [2023-12-25 21:22:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:28,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363401532] [2023-12-25 21:22:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:28,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:29,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363401532] [2023-12-25 21:22:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363401532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:29,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:29,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:22:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897640574] [2023-12-25 21:22:29,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:29,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:22:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:22:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:22:29,360 INFO L87 Difference]: Start difference. First operand 4733 states and 7849 transitions. Second operand has 6 states, 6 states have (on average 71.33333333333333) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:33,088 INFO L93 Difference]: Finished difference Result 12769 states and 21205 transitions. [2023-12-25 21:22:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:22:33,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 71.33333333333333) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 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 428 [2023-12-25 21:22:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:33,097 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:22:33,098 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:22:33,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:22:33,103 INFO L413 NwaCegarLoop]: 5740 mSDtfsCounter, 20580 mSDsluCounter, 17732 mSDsCounter, 0 mSdLazyCounter, 5629 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20580 SdHoareTripleChecker+Valid, 23472 SdHoareTripleChecker+Invalid, 5719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:33,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20580 Valid, 23472 Invalid, 5719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5629 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-25 21:22:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:22:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4739. [2023-12-25 21:22:33,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4739 states, 4738 states have (on average 1.6585056986070073) internal successors, (7858), 4738 states have internal predecessors, (7858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 7858 transitions. [2023-12-25 21:22:33,149 INFO L78 Accepts]: Start accepts. Automaton has 4739 states and 7858 transitions. Word has length 428 [2023-12-25 21:22:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:33,149 INFO L495 AbstractCegarLoop]: Abstraction has 4739 states and 7858 transitions. [2023-12-25 21:22:33,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.33333333333333) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4739 states and 7858 transitions. [2023-12-25 21:22:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-12-25 21:22:33,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:33,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:33,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-25 21:22:33,151 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:33,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:33,152 INFO L85 PathProgramCache]: Analyzing trace with hash -999245203, now seen corresponding path program 1 times [2023-12-25 21:22:33,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:33,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094609823] [2023-12-25 21:22:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:33,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094609823] [2023-12-25 21:22:33,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094609823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:33,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:33,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220688121] [2023-12-25 21:22:33,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:33,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:22:33,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:33,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:22:33,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:33,676 INFO L87 Difference]: Start difference. First operand 4739 states and 7858 transitions. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:37,176 INFO L93 Difference]: Finished difference Result 12589 states and 20935 transitions. [2023-12-25 21:22:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:22:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 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 429 [2023-12-25 21:22:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:37,185 INFO L225 Difference]: With dead ends: 12589 [2023-12-25 21:22:37,185 INFO L226 Difference]: Without dead ends: 8438 [2023-12-25 21:22:37,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-25 21:22:37,190 INFO L413 NwaCegarLoop]: 5257 mSDtfsCounter, 20487 mSDsluCounter, 10507 mSDsCounter, 0 mSdLazyCounter, 5658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20487 SdHoareTripleChecker+Valid, 15764 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:37,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20487 Valid, 15764 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5658 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-25 21:22:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2023-12-25 21:22:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 4740. [2023-12-25 21:22:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4739 states have (on average 1.6583667440388268) internal successors, (7859), 4739 states have internal predecessors, (7859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 7859 transitions. [2023-12-25 21:22:37,243 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 7859 transitions. Word has length 429 [2023-12-25 21:22:37,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:37,243 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 7859 transitions. [2023-12-25 21:22:37,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 7859 transitions. [2023-12-25 21:22:37,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2023-12-25 21:22:37,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:37,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:37,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-25 21:22:37,246 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:37,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2020313557, now seen corresponding path program 1 times [2023-12-25 21:22:37,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:37,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987202114] [2023-12-25 21:22:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:37,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:37,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987202114] [2023-12-25 21:22:37,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987202114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:37,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:37,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:22:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194516507] [2023-12-25 21:22:37,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:37,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 21:22:37,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 21:22:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:22:37,665 INFO L87 Difference]: Start difference. First operand 4740 states and 7859 transitions. Second operand has 6 states, 6 states have (on average 71.5) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:40,122 INFO L93 Difference]: Finished difference Result 12769 states and 21203 transitions. [2023-12-25 21:22:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:22:40,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 71.5) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 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 429 [2023-12-25 21:22:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:40,129 INFO L225 Difference]: With dead ends: 12769 [2023-12-25 21:22:40,129 INFO L226 Difference]: Without dead ends: 8618 [2023-12-25 21:22:40,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-25 21:22:40,133 INFO L413 NwaCegarLoop]: 5742 mSDtfsCounter, 27119 mSDsluCounter, 12573 mSDsCounter, 0 mSdLazyCounter, 3832 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27119 SdHoareTripleChecker+Valid, 18315 SdHoareTripleChecker+Invalid, 3922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:40,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27119 Valid, 18315 Invalid, 3922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3832 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 21:22:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2023-12-25 21:22:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 4745. [2023-12-25 21:22:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4745 states, 4744 states have (on average 1.6580944350758853) internal successors, (7866), 4744 states have internal predecessors, (7866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 7866 transitions. [2023-12-25 21:22:40,180 INFO L78 Accepts]: Start accepts. Automaton has 4745 states and 7866 transitions. Word has length 429 [2023-12-25 21:22:40,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:40,180 INFO L495 AbstractCegarLoop]: Abstraction has 4745 states and 7866 transitions. [2023-12-25 21:22:40,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.5) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:40,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4745 states and 7866 transitions. [2023-12-25 21:22:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-25 21:22:40,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:40,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:40,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-25 21:22:40,182 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:40,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:40,183 INFO L85 PathProgramCache]: Analyzing trace with hash -781881577, now seen corresponding path program 1 times [2023-12-25 21:22:40,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:40,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061092396] [2023-12-25 21:22:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:40,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:40,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061092396] [2023-12-25 21:22:40,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061092396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:40,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:40,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:40,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120499814] [2023-12-25 21:22:40,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:40,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:22:40,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:22:40,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:22:40,666 INFO L87 Difference]: Start difference. First operand 4745 states and 7866 transitions. Second operand has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:40,740 INFO L93 Difference]: Finished difference Result 4749 states and 7870 transitions. [2023-12-25 21:22:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:22:40,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 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 430 [2023-12-25 21:22:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:40,745 INFO L225 Difference]: With dead ends: 4749 [2023-12-25 21:22:40,745 INFO L226 Difference]: Without dead ends: 4747 [2023-12-25 21:22:40,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:22:40,746 INFO L413 NwaCegarLoop]: 7138 mSDtfsCounter, 1 mSDsluCounter, 14271 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21409 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:40,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21409 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:22:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2023-12-25 21:22:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 4747. [2023-12-25 21:22:40,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4747 states, 4746 states have (on average 1.6578171091445428) internal successors, (7868), 4746 states have internal predecessors, (7868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 7868 transitions. [2023-12-25 21:22:40,788 INFO L78 Accepts]: Start accepts. Automaton has 4747 states and 7868 transitions. Word has length 430 [2023-12-25 21:22:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:40,788 INFO L495 AbstractCegarLoop]: Abstraction has 4747 states and 7868 transitions. [2023-12-25 21:22:40,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4747 states and 7868 transitions. [2023-12-25 21:22:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2023-12-25 21:22:40,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:40,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:40,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-25 21:22:40,790 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:40,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1533261843, now seen corresponding path program 1 times [2023-12-25 21:22:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:40,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106406570] [2023-12-25 21:22:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:40,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:41,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:41,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106406570] [2023-12-25 21:22:41,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106406570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:41,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:41,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436085480] [2023-12-25 21:22:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:41,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:22:41,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:22:41,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:22:41,127 INFO L87 Difference]: Start difference. First operand 4747 states and 7868 transitions. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:41,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:41,197 INFO L93 Difference]: Finished difference Result 8903 states and 14789 transitions. [2023-12-25 21:22:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:22:41,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 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 431 [2023-12-25 21:22:41,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:41,202 INFO L225 Difference]: With dead ends: 8903 [2023-12-25 21:22:41,202 INFO L226 Difference]: Without dead ends: 4750 [2023-12-25 21:22:41,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:22:41,205 INFO L413 NwaCegarLoop]: 7138 mSDtfsCounter, 1 mSDsluCounter, 14269 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21407 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:41,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21407 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:22:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4750 states. [2023-12-25 21:22:41,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4750 to 4749. [2023-12-25 21:22:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4749 states, 4748 states have (on average 1.6575400168491996) internal successors, (7870), 4748 states have internal predecessors, (7870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 7870 transitions. [2023-12-25 21:22:41,240 INFO L78 Accepts]: Start accepts. Automaton has 4749 states and 7870 transitions. Word has length 431 [2023-12-25 21:22:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:41,240 INFO L495 AbstractCegarLoop]: Abstraction has 4749 states and 7870 transitions. [2023-12-25 21:22:41,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4749 states and 7870 transitions. [2023-12-25 21:22:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2023-12-25 21:22:41,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:41,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:41,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-25 21:22:41,242 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:41,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:41,242 INFO L85 PathProgramCache]: Analyzing trace with hash 74259375, now seen corresponding path program 1 times [2023-12-25 21:22:41,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:41,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536884811] [2023-12-25 21:22:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:41,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:41,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536884811] [2023-12-25 21:22:41,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536884811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:41,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:41,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:41,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903806993] [2023-12-25 21:22:41,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:41,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:22:41,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:22:41,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:22:41,571 INFO L87 Difference]: Start difference. First operand 4749 states and 7870 transitions. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:41,671 INFO L93 Difference]: Finished difference Result 13053 states and 21699 transitions. [2023-12-25 21:22:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:22:41,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 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 432 [2023-12-25 21:22:41,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:41,678 INFO L225 Difference]: With dead ends: 13053 [2023-12-25 21:22:41,678 INFO L226 Difference]: Without dead ends: 8898 [2023-12-25 21:22:41,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:41,682 INFO L413 NwaCegarLoop]: 7875 mSDtfsCounter, 6906 mSDsluCounter, 15004 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6906 SdHoareTripleChecker+Valid, 22879 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:41,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6906 Valid, 22879 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:22:41,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2023-12-25 21:22:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 4751. [2023-12-25 21:22:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4751 states, 4750 states have (on average 1.6572631578947368) internal successors, (7872), 4750 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4751 states to 4751 states and 7872 transitions. [2023-12-25 21:22:41,725 INFO L78 Accepts]: Start accepts. Automaton has 4751 states and 7872 transitions. Word has length 432 [2023-12-25 21:22:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:41,726 INFO L495 AbstractCegarLoop]: Abstraction has 4751 states and 7872 transitions. [2023-12-25 21:22:41,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4751 states and 7872 transitions. [2023-12-25 21:22:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-25 21:22:41,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:41,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:41,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-25 21:22:41,728 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:41,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash -394804935, now seen corresponding path program 1 times [2023-12-25 21:22:41,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:41,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434992220] [2023-12-25 21:22:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:41,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:42,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:42,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434992220] [2023-12-25 21:22:42,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434992220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:42,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:42,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:42,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183944022] [2023-12-25 21:22:42,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:42,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:22:42,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:22:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:22:42,041 INFO L87 Difference]: Start difference. First operand 4751 states and 7872 transitions. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:42,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:42,143 INFO L93 Difference]: Finished difference Result 13056 states and 21700 transitions. [2023-12-25 21:22:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:22:42,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 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 433 [2023-12-25 21:22:42,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:42,151 INFO L225 Difference]: With dead ends: 13056 [2023-12-25 21:22:42,151 INFO L226 Difference]: Without dead ends: 8899 [2023-12-25 21:22:42,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:42,154 INFO L413 NwaCegarLoop]: 7870 mSDtfsCounter, 6903 mSDsluCounter, 14999 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6903 SdHoareTripleChecker+Valid, 22869 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:42,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6903 Valid, 22869 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:22:42,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8899 states. [2023-12-25 21:22:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8899 to 4753. [2023-12-25 21:22:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4753 states, 4752 states have (on average 1.656986531986532) internal successors, (7874), 4752 states have internal predecessors, (7874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 7874 transitions. [2023-12-25 21:22:42,241 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 7874 transitions. Word has length 433 [2023-12-25 21:22:42,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:42,242 INFO L495 AbstractCegarLoop]: Abstraction has 4753 states and 7874 transitions. [2023-12-25 21:22:42,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 7874 transitions. [2023-12-25 21:22:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2023-12-25 21:22:42,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:42,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:42,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-25 21:22:42,244 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:42,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:42,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2138993271, now seen corresponding path program 1 times [2023-12-25 21:22:42,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:42,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049123245] [2023-12-25 21:22:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:42,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:42,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:42,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049123245] [2023-12-25 21:22:42,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049123245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:42,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:42,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:22:42,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327344652] [2023-12-25 21:22:42,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:42,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:22:42,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:42,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:22:42,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:42,610 INFO L87 Difference]: Start difference. First operand 4753 states and 7874 transitions. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:42,736 INFO L93 Difference]: Finished difference Result 13062 states and 21704 transitions. [2023-12-25 21:22:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:22:42,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 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 434 [2023-12-25 21:22:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:42,744 INFO L225 Difference]: With dead ends: 13062 [2023-12-25 21:22:42,744 INFO L226 Difference]: Without dead ends: 8903 [2023-12-25 21:22:42,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:22:42,749 INFO L413 NwaCegarLoop]: 7859 mSDtfsCounter, 6899 mSDsluCounter, 21882 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6899 SdHoareTripleChecker+Valid, 29741 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:42,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6899 Valid, 29741 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:22:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2023-12-25 21:22:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 4760. [2023-12-25 21:22:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4760 states, 4759 states have (on average 1.6564404286614836) internal successors, (7883), 4759 states have internal predecessors, (7883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 7883 transitions. [2023-12-25 21:22:42,796 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 7883 transitions. Word has length 434 [2023-12-25 21:22:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:42,796 INFO L495 AbstractCegarLoop]: Abstraction has 4760 states and 7883 transitions. [2023-12-25 21:22:42,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 7883 transitions. [2023-12-25 21:22:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-12-25 21:22:42,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:42,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:42,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-25 21:22:42,798 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:42,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:42,798 INFO L85 PathProgramCache]: Analyzing trace with hash 710865205, now seen corresponding path program 1 times [2023-12-25 21:22:42,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:42,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649642573] [2023-12-25 21:22:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649642573] [2023-12-25 21:22:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649642573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:43,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:43,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:43,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572164374] [2023-12-25 21:22:43,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:43,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:22:43,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:43,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:22:43,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:22:43,140 INFO L87 Difference]: Start difference. First operand 4760 states and 7883 transitions. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:43,246 INFO L93 Difference]: Finished difference Result 13080 states and 21726 transitions. [2023-12-25 21:22:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:22:43,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 435 [2023-12-25 21:22:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:43,254 INFO L225 Difference]: With dead ends: 13080 [2023-12-25 21:22:43,254 INFO L226 Difference]: Without dead ends: 8913 [2023-12-25 21:22:43,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:43,258 INFO L413 NwaCegarLoop]: 7853 mSDtfsCounter, 6894 mSDsluCounter, 14982 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6894 SdHoareTripleChecker+Valid, 22835 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:43,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6894 Valid, 22835 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:22:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8913 states. [2023-12-25 21:22:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8913 to 4770. [2023-12-25 21:22:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4769 states have (on average 1.6554833298385405) internal successors, (7895), 4769 states have internal predecessors, (7895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 7895 transitions. [2023-12-25 21:22:43,311 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 7895 transitions. Word has length 435 [2023-12-25 21:22:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:43,311 INFO L495 AbstractCegarLoop]: Abstraction has 4770 states and 7895 transitions. [2023-12-25 21:22:43,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 7895 transitions. [2023-12-25 21:22:43,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-12-25 21:22:43,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:43,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:43,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-25 21:22:43,313 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:43,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2112764933, now seen corresponding path program 1 times [2023-12-25 21:22:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042583303] [2023-12-25 21:22:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042583303] [2023-12-25 21:22:43,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042583303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:43,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:43,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:43,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92029992] [2023-12-25 21:22:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:43,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:22:43,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:22:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:22:43,651 INFO L87 Difference]: Start difference. First operand 4770 states and 7895 transitions. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:43,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:43,755 INFO L93 Difference]: Finished difference Result 13107 states and 21758 transitions. [2023-12-25 21:22:43,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:22:43,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 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 436 [2023-12-25 21:22:43,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:43,763 INFO L225 Difference]: With dead ends: 13107 [2023-12-25 21:22:43,763 INFO L226 Difference]: Without dead ends: 8927 [2023-12-25 21:22:43,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:43,767 INFO L413 NwaCegarLoop]: 7844 mSDtfsCounter, 6891 mSDsluCounter, 14973 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6891 SdHoareTripleChecker+Valid, 22817 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:43,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6891 Valid, 22817 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:22:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8927 states. [2023-12-25 21:22:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8927 to 4780. [2023-12-25 21:22:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4780 states, 4779 states have (on average 1.6547394852479598) internal successors, (7908), 4779 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4780 states to 4780 states and 7908 transitions. [2023-12-25 21:22:43,814 INFO L78 Accepts]: Start accepts. Automaton has 4780 states and 7908 transitions. Word has length 436 [2023-12-25 21:22:43,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:43,815 INFO L495 AbstractCegarLoop]: Abstraction has 4780 states and 7908 transitions. [2023-12-25 21:22:43,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:43,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4780 states and 7908 transitions. [2023-12-25 21:22:43,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-12-25 21:22:43,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:43,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:43,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-25 21:22:43,817 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:43,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:43,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2107692849, now seen corresponding path program 1 times [2023-12-25 21:22:43,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:43,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249983788] [2023-12-25 21:22:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:43,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:44,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249983788] [2023-12-25 21:22:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249983788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:22:44,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:22:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:22:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2691381] [2023-12-25 21:22:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:44,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:22:44,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:22:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:22:44,186 INFO L87 Difference]: Start difference. First operand 4780 states and 7908 transitions. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:44,336 INFO L93 Difference]: Finished difference Result 13090 states and 21733 transitions. [2023-12-25 21:22:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:22:44,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 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 437 [2023-12-25 21:22:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:44,344 INFO L225 Difference]: With dead ends: 13090 [2023-12-25 21:22:44,344 INFO L226 Difference]: Without dead ends: 8894 [2023-12-25 21:22:44,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 21:22:44,348 INFO L413 NwaCegarLoop]: 7838 mSDtfsCounter, 28068 mSDsluCounter, 14269 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28068 SdHoareTripleChecker+Valid, 22107 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:44,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28068 Valid, 22107 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:22:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8894 states. [2023-12-25 21:22:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8894 to 4765. [2023-12-25 21:22:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4765 states, 4764 states have (on average 1.6553316540722083) internal successors, (7886), 4764 states have internal predecessors, (7886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4765 states to 4765 states and 7886 transitions. [2023-12-25 21:22:44,399 INFO L78 Accepts]: Start accepts. Automaton has 4765 states and 7886 transitions. Word has length 437 [2023-12-25 21:22:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:44,399 INFO L495 AbstractCegarLoop]: Abstraction has 4765 states and 7886 transitions. [2023-12-25 21:22:44,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4765 states and 7886 transitions. [2023-12-25 21:22:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3205 [2023-12-25 21:22:44,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:44,475 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:44,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-25 21:22:44,475 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:44,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:44,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1295870435, now seen corresponding path program 1 times [2023-12-25 21:22:44,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:44,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904001318] [2023-12-25 21:22:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:44,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 100 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:22:54,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:22:54,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904001318] [2023-12-25 21:22:54,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904001318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 21:22:54,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946035148] [2023-12-25 21:22:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:54,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:22:54,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:22:54,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 21:22:54,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 21:22:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:22:56,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 13301 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 21:22:56,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:22:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 20 proven. 112 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-25 21:22:57,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 21:22:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-12-25 21:22:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946035148] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 21:22:57,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 21:22:57,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15 [2023-12-25 21:22:57,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360967570] [2023-12-25 21:22:57,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:22:57,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:22:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:22:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:22:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-25 21:22:57,258 INFO L87 Difference]: Start difference. First operand 4765 states and 7886 transitions. Second operand has 4 states, 4 states have (on average 732.5) internal successors, (2930), 4 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:22:57,376 INFO L93 Difference]: Finished difference Result 13097 states and 21740 transitions. [2023-12-25 21:22:57,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:22:57,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 732.5) internal successors, (2930), 4 states have internal predecessors, (2930), 0 states have call successors, (0), 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 3204 [2023-12-25 21:22:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:22:57,386 INFO L225 Difference]: With dead ends: 13097 [2023-12-25 21:22:57,386 INFO L226 Difference]: Without dead ends: 8923 [2023-12-25 21:22:57,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6415 GetRequests, 6401 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-25 21:22:57,390 INFO L413 NwaCegarLoop]: 7839 mSDtfsCounter, 6891 mSDsluCounter, 14968 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6891 SdHoareTripleChecker+Valid, 22807 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:22:57,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6891 Valid, 22807 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:22:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8923 states. [2023-12-25 21:22:57,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8923 to 4767. [2023-12-25 21:22:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4767 states, 4766 states have (on average 1.6550566512798992) internal successors, (7888), 4766 states have internal predecessors, (7888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4767 states to 4767 states and 7888 transitions. [2023-12-25 21:22:57,435 INFO L78 Accepts]: Start accepts. Automaton has 4767 states and 7888 transitions. Word has length 3204 [2023-12-25 21:22:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:22:57,439 INFO L495 AbstractCegarLoop]: Abstraction has 4767 states and 7888 transitions. [2023-12-25 21:22:57,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 732.5) internal successors, (2930), 4 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:22:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4767 states and 7888 transitions. [2023-12-25 21:22:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3206 [2023-12-25 21:22:57,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:22:57,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:22:57,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 21:22:57,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-25 21:22:57,695 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:22:57,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:22:57,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1356240507, now seen corresponding path program 1 times [2023-12-25 21:22:57,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:22:57,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010095650] [2023-12-25 21:22:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:22:57,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:22:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:23:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-25 21:23:05,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:23:05,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010095650] [2023-12-25 21:23:05,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010095650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:23:05,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:23:05,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:23:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90868334] [2023-12-25 21:23:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:23:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:23:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:23:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:23:05,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:23:05,657 INFO L87 Difference]: Start difference. First operand 4767 states and 7888 transitions. Second operand has 4 states, 4 states have (on average 733.5) internal successors, (2934), 4 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:23:05,768 INFO L93 Difference]: Finished difference Result 13120 states and 21764 transitions. [2023-12-25 21:23:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:23:05,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 733.5) internal successors, (2934), 4 states have internal predecessors, (2934), 0 states have call successors, (0), 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 3205 [2023-12-25 21:23:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:23:05,792 INFO L225 Difference]: With dead ends: 13120 [2023-12-25 21:23:05,792 INFO L226 Difference]: Without dead ends: 8929 [2023-12-25 21:23:05,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:23:05,796 INFO L413 NwaCegarLoop]: 7831 mSDtfsCounter, 6886 mSDsluCounter, 14960 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6886 SdHoareTripleChecker+Valid, 22791 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:23:05,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6886 Valid, 22791 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:23:05,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8929 states. [2023-12-25 21:23:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8929 to 4777. [2023-12-25 21:23:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 4776 states have (on average 1.654103852596315) internal successors, (7900), 4776 states have internal predecessors, (7900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:05,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 7900 transitions. [2023-12-25 21:23:05,845 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 7900 transitions. Word has length 3205 [2023-12-25 21:23:05,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:23:05,846 INFO L495 AbstractCegarLoop]: Abstraction has 4777 states and 7900 transitions. [2023-12-25 21:23:05,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 733.5) internal successors, (2934), 4 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 7900 transitions. [2023-12-25 21:23:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3207 [2023-12-25 21:23:05,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:23:05,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:23:05,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-25 21:23:05,916 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:23:05,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:23:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1354663085, now seen corresponding path program 1 times [2023-12-25 21:23:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:23:05,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216576485] [2023-12-25 21:23:05,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:23:05,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:23:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:23:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 102 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:23:13,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:23:13,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216576485] [2023-12-25 21:23:13,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216576485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 21:23:13,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224432527] [2023-12-25 21:23:13,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:23:13,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:23:13,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:23:13,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 21:23:13,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 21:23:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:23:16,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 13308 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 21:23:16,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:23:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 26 proven. 106 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-25 21:23:16,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 21:23:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-25 21:23:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224432527] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 21:23:17,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 21:23:17,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15 [2023-12-25 21:23:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124768332] [2023-12-25 21:23:17,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:23:17,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:23:17,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:23:17,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:23:17,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-25 21:23:17,031 INFO L87 Difference]: Start difference. First operand 4777 states and 7900 transitions. Second operand has 4 states, 4 states have (on average 734.25) internal successors, (2937), 4 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:17,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:23:17,145 INFO L93 Difference]: Finished difference Result 13142 states and 21790 transitions. [2023-12-25 21:23:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:23:17,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 734.25) internal successors, (2937), 4 states have internal predecessors, (2937), 0 states have call successors, (0), 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 3206 [2023-12-25 21:23:17,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:23:17,158 INFO L225 Difference]: With dead ends: 13142 [2023-12-25 21:23:17,158 INFO L226 Difference]: Without dead ends: 8940 [2023-12-25 21:23:17,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6419 GetRequests, 6405 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-25 21:23:17,163 INFO L413 NwaCegarLoop]: 7826 mSDtfsCounter, 6885 mSDsluCounter, 14955 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6885 SdHoareTripleChecker+Valid, 22781 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:23:17,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6885 Valid, 22781 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:23:17,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8940 states. [2023-12-25 21:23:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8940 to 4781. [2023-12-25 21:23:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4780 states have (on average 1.6535564853556486) internal successors, (7904), 4780 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7904 transitions. [2023-12-25 21:23:17,217 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7904 transitions. Word has length 3206 [2023-12-25 21:23:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:23:17,218 INFO L495 AbstractCegarLoop]: Abstraction has 4781 states and 7904 transitions. [2023-12-25 21:23:17,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 734.25) internal successors, (2937), 4 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7904 transitions. [2023-12-25 21:23:17,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3208 [2023-12-25 21:23:17,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:23:17,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:23:17,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 21:23:17,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-25 21:23:17,473 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:23:17,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:23:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash -70190179, now seen corresponding path program 1 times [2023-12-25 21:23:17,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:23:17,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110833] [2023-12-25 21:23:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:23:17,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:23:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:23:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-25 21:23:24,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:23:24,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110833] [2023-12-25 21:23:24,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:23:24,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:23:24,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:23:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784051168] [2023-12-25 21:23:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:23:24,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:23:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:23:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:23:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:23:24,500 INFO L87 Difference]: Start difference. First operand 4781 states and 7904 transitions. Second operand has 4 states, 4 states have (on average 735.25) internal successors, (2941), 4 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:24,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:23:24,612 INFO L93 Difference]: Finished difference Result 13160 states and 21808 transitions. [2023-12-25 21:23:24,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:23:24,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 735.25) internal successors, (2941), 4 states have internal predecessors, (2941), 0 states have call successors, (0), 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 3207 [2023-12-25 21:23:24,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:23:24,624 INFO L225 Difference]: With dead ends: 13160 [2023-12-25 21:23:24,624 INFO L226 Difference]: Without dead ends: 8948 [2023-12-25 21:23:24,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:23:24,628 INFO L413 NwaCegarLoop]: 7818 mSDtfsCounter, 6880 mSDsluCounter, 14947 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6880 SdHoareTripleChecker+Valid, 22765 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:23:24,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6880 Valid, 22765 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:23:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8948 states. [2023-12-25 21:23:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8948 to 4791. [2023-12-25 21:23:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4791 states, 4790 states have (on average 1.6526096033402922) internal successors, (7916), 4790 states have internal predecessors, (7916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4791 states to 4791 states and 7916 transitions. [2023-12-25 21:23:24,702 INFO L78 Accepts]: Start accepts. Automaton has 4791 states and 7916 transitions. Word has length 3207 [2023-12-25 21:23:24,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:23:24,704 INFO L495 AbstractCegarLoop]: Abstraction has 4791 states and 7916 transitions. [2023-12-25 21:23:24,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 735.25) internal successors, (2941), 4 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 4791 states and 7916 transitions. [2023-12-25 21:23:24,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3209 [2023-12-25 21:23:24,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:23:24,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:23:24,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-25 21:23:24,758 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:23:24,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:23:24,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2006158457, now seen corresponding path program 1 times [2023-12-25 21:23:24,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:23:24,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368168732] [2023-12-25 21:23:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:23:24,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:23:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:23:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 104 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:23:32,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:23:32,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368168732] [2023-12-25 21:23:32,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368168732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 21:23:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317561721] [2023-12-25 21:23:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:23:32,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:23:32,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:23:32,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 21:23:32,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 21:23:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:23:35,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 13314 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-25 21:23:35,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:23:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 32 proven. 100 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-25 21:23:35,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 21:23:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-25 21:23:35,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317561721] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 21:23:35,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 21:23:35,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 17 [2023-12-25 21:23:35,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861277907] [2023-12-25 21:23:35,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:23:35,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:23:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:23:35,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:23:35,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-12-25 21:23:35,483 INFO L87 Difference]: Start difference. First operand 4791 states and 7916 transitions. Second operand has 5 states, 5 states have (on average 588.8) internal successors, (2944), 5 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:23:35,689 INFO L93 Difference]: Finished difference Result 17402 states and 28831 transitions. [2023-12-25 21:23:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 21:23:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 588.8) internal successors, (2944), 5 states have internal predecessors, (2944), 0 states have call successors, (0), 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 3208 [2023-12-25 21:23:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:23:35,704 INFO L225 Difference]: With dead ends: 17402 [2023-12-25 21:23:35,705 INFO L226 Difference]: Without dead ends: 13177 [2023-12-25 21:23:35,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6424 GetRequests, 6407 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-12-25 21:23:35,710 INFO L413 NwaCegarLoop]: 14723 mSDtfsCounter, 13789 mSDsluCounter, 36569 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13789 SdHoareTripleChecker+Valid, 51292 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:23:35,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13789 Valid, 51292 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:23:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13177 states. [2023-12-25 21:23:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13177 to 4795. [2023-12-25 21:23:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4795 states, 4794 states have (on average 1.6520650813516895) internal successors, (7920), 4794 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4795 states to 4795 states and 7920 transitions. [2023-12-25 21:23:35,776 INFO L78 Accepts]: Start accepts. Automaton has 4795 states and 7920 transitions. Word has length 3208 [2023-12-25 21:23:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:23:35,777 INFO L495 AbstractCegarLoop]: Abstraction has 4795 states and 7920 transitions. [2023-12-25 21:23:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 588.8) internal successors, (2944), 5 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4795 states and 7920 transitions. [2023-12-25 21:23:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3210 [2023-12-25 21:23:35,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:23:35,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:23:35,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 21:23:36,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:23:36,076 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:23:36,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:23:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1481276857, now seen corresponding path program 1 times [2023-12-25 21:23:36,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:23:36,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936317804] [2023-12-25 21:23:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:23:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:23:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:23:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-25 21:23:42,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:23:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936317804] [2023-12-25 21:23:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936317804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:23:42,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:23:42,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:23:42,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338386555] [2023-12-25 21:23:42,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:23:42,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:23:42,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:23:42,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:23:42,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:23:42,731 INFO L87 Difference]: Start difference. First operand 4795 states and 7920 transitions. Second operand has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:23:42,852 INFO L93 Difference]: Finished difference Result 13202 states and 21854 transitions. [2023-12-25 21:23:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:23:42,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 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 3209 [2023-12-25 21:23:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:23:42,863 INFO L225 Difference]: With dead ends: 13202 [2023-12-25 21:23:42,863 INFO L226 Difference]: Without dead ends: 8967 [2023-12-25 21:23:42,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:23:42,868 INFO L413 NwaCegarLoop]: 7805 mSDtfsCounter, 6874 mSDsluCounter, 14934 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6874 SdHoareTripleChecker+Valid, 22739 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:23:42,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6874 Valid, 22739 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:23:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8967 states. [2023-12-25 21:23:42,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8967 to 4805. [2023-12-25 21:23:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4805 states, 4804 states have (on average 1.6511240632805995) internal successors, (7932), 4804 states have internal predecessors, (7932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 7932 transitions. [2023-12-25 21:23:42,924 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 7932 transitions. Word has length 3209 [2023-12-25 21:23:42,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:23:42,925 INFO L495 AbstractCegarLoop]: Abstraction has 4805 states and 7932 transitions. [2023-12-25 21:23:42,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:42,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 7932 transitions. [2023-12-25 21:23:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3211 [2023-12-25 21:23:42,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:23:42,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:23:42,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-25 21:23:42,980 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:23:42,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:23:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash 363990663, now seen corresponding path program 1 times [2023-12-25 21:23:42,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:23:42,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419819393] [2023-12-25 21:23:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:23:42,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:23:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:23:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-25 21:23:49,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:23:49,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419819393] [2023-12-25 21:23:49,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419819393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:23:49,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:23:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:23:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26333374] [2023-12-25 21:23:49,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:23:49,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:23:49,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:23:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:23:49,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:23:49,970 INFO L87 Difference]: Start difference. First operand 4805 states and 7932 transitions. Second operand has 4 states, 4 states have (on average 737.75) internal successors, (2951), 4 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:23:50,075 INFO L93 Difference]: Finished difference Result 13226 states and 21882 transitions. [2023-12-25 21:23:50,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:23:50,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 737.75) internal successors, (2951), 4 states have internal predecessors, (2951), 0 states have call successors, (0), 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 3210 [2023-12-25 21:23:50,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:23:50,085 INFO L225 Difference]: With dead ends: 13226 [2023-12-25 21:23:50,086 INFO L226 Difference]: Without dead ends: 8978 [2023-12-25 21:23:50,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:23:50,090 INFO L413 NwaCegarLoop]: 7800 mSDtfsCounter, 6873 mSDsluCounter, 14929 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6873 SdHoareTripleChecker+Valid, 22729 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:23:50,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6873 Valid, 22729 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:23:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8978 states. [2023-12-25 21:23:50,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8978 to 4809. [2023-12-25 21:23:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 4808 states have (on average 1.6505823627287854) internal successors, (7936), 4808 states have internal predecessors, (7936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 7936 transitions. [2023-12-25 21:23:50,146 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 7936 transitions. Word has length 3210 [2023-12-25 21:23:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:23:50,147 INFO L495 AbstractCegarLoop]: Abstraction has 4809 states and 7936 transitions. [2023-12-25 21:23:50,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 737.75) internal successors, (2951), 4 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 7936 transitions. [2023-12-25 21:23:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3212 [2023-12-25 21:23:50,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:23:50,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:23:50,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-25 21:23:50,202 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:23:50,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:23:50,202 INFO L85 PathProgramCache]: Analyzing trace with hash 497612691, now seen corresponding path program 1 times [2023-12-25 21:23:50,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:23:50,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419191459] [2023-12-25 21:23:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:23:50,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:23:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:23:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-25 21:23:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:23:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419191459] [2023-12-25 21:23:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419191459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:23:57,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:23:57,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:23:57,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667008422] [2023-12-25 21:23:57,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:23:57,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:23:57,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:23:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:23:57,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:23:57,425 INFO L87 Difference]: Start difference. First operand 4809 states and 7936 transitions. Second operand has 4 states, 4 states have (on average 738.75) internal successors, (2955), 4 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:23:57,626 INFO L93 Difference]: Finished difference Result 13244 states and 21901 transitions. [2023-12-25 21:23:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:23:57,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 738.75) internal successors, (2955), 4 states have internal predecessors, (2955), 0 states have call successors, (0), 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 3211 [2023-12-25 21:23:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:23:57,635 INFO L225 Difference]: With dead ends: 13244 [2023-12-25 21:23:57,635 INFO L226 Difference]: Without dead ends: 8986 [2023-12-25 21:23:57,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:23:57,639 INFO L413 NwaCegarLoop]: 7791 mSDtfsCounter, 6868 mSDsluCounter, 14920 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6868 SdHoareTripleChecker+Valid, 22711 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:23:57,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6868 Valid, 22711 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:23:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8986 states. [2023-12-25 21:23:57,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8986 to 4819. [2023-12-25 21:23:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4819 states, 4818 states have (on average 1.6498547114985471) internal successors, (7949), 4818 states have internal predecessors, (7949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 7949 transitions. [2023-12-25 21:23:57,694 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 7949 transitions. Word has length 3211 [2023-12-25 21:23:57,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:23:57,696 INFO L495 AbstractCegarLoop]: Abstraction has 4819 states and 7949 transitions. [2023-12-25 21:23:57,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 738.75) internal successors, (2955), 4 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:23:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 7949 transitions. [2023-12-25 21:23:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3213 [2023-12-25 21:23:57,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:23:57,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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21:23:57,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-25 21:23:57,771 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:23:57,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:23:57,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1996471853, now seen corresponding path program 1 times [2023-12-25 21:23:57,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:23:57,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504002888] [2023-12-25 21:23:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:23:57,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:23:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:24:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-25 21:24:04,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:24:04,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504002888] [2023-12-25 21:24:04,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504002888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:24:04,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:24:04,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:24:04,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923786023] [2023-12-25 21:24:04,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:24:04,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:24:04,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:24:04,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:24:04,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:04,500 INFO L87 Difference]: Start difference. First operand 4819 states and 7949 transitions. Second operand has 4 states, 4 states have (on average 739.5) internal successors, (2958), 4 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:24:04,609 INFO L93 Difference]: Finished difference Result 13268 states and 21931 transitions. [2023-12-25 21:24:04,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:24:04,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 739.5) internal successors, (2958), 4 states have internal predecessors, (2958), 0 states have call successors, (0), 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 3212 [2023-12-25 21:24:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:24:04,619 INFO L225 Difference]: With dead ends: 13268 [2023-12-25 21:24:04,619 INFO L226 Difference]: Without dead ends: 8997 [2023-12-25 21:24:04,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:24:04,627 INFO L413 NwaCegarLoop]: 7786 mSDtfsCounter, 6867 mSDsluCounter, 14915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6867 SdHoareTripleChecker+Valid, 22701 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:24:04,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6867 Valid, 22701 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:24:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2023-12-25 21:24:04,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 4823. [2023-12-25 21:24:04,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4823 states, 4822 states have (on average 1.6493156366652841) internal successors, (7953), 4822 states have internal predecessors, (7953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 7953 transitions. [2023-12-25 21:24:04,674 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 7953 transitions. Word has length 3212 [2023-12-25 21:24:04,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:24:04,675 INFO L495 AbstractCegarLoop]: Abstraction has 4823 states and 7953 transitions. [2023-12-25 21:24:04,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 739.5) internal successors, (2958), 4 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 7953 transitions. [2023-12-25 21:24:04,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3214 [2023-12-25 21:24:04,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:24:04,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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21:24:04,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-25 21:24:04,753 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:24:04,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:24:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash 764536237, now seen corresponding path program 1 times [2023-12-25 21:24:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:24:04,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434031720] [2023-12-25 21:24:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:24:04,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:24:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:24:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-25 21:24:11,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:24:11,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434031720] [2023-12-25 21:24:11,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434031720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:24:11,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:24:11,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:24:11,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437274362] [2023-12-25 21:24:11,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:24:11,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:24:11,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:24:11,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:24:11,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:11,391 INFO L87 Difference]: Start difference. First operand 4823 states and 7953 transitions. Second operand has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:24:11,515 INFO L93 Difference]: Finished difference Result 13158 states and 21797 transitions. [2023-12-25 21:24:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:24:11,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 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 3213 [2023-12-25 21:24:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:24:11,525 INFO L225 Difference]: With dead ends: 13158 [2023-12-25 21:24:11,525 INFO L226 Difference]: Without dead ends: 8954 [2023-12-25 21:24:11,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:11,529 INFO L413 NwaCegarLoop]: 13988 mSDtfsCounter, 6859 mSDsluCounter, 21114 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6859 SdHoareTripleChecker+Valid, 35102 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:24:11,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6859 Valid, 35102 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:24:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8954 states. [2023-12-25 21:24:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8954 to 4825. [2023-12-25 21:24:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.6490464344941957) internal successors, (7955), 4824 states have internal predecessors, (7955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 7955 transitions. [2023-12-25 21:24:11,582 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 7955 transitions. Word has length 3213 [2023-12-25 21:24:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:24:11,583 INFO L495 AbstractCegarLoop]: Abstraction has 4825 states and 7955 transitions. [2023-12-25 21:24:11,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 740.0) internal successors, (2960), 4 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 7955 transitions. [2023-12-25 21:24:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3215 [2023-12-25 21:24:11,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:24:11,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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21:24:11,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-25 21:24:11,637 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:24:11,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:24:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash 760686777, now seen corresponding path program 1 times [2023-12-25 21:24:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:24:11,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92048097] [2023-12-25 21:24:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:24:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:24:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:24:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-12-25 21:24:18,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:24:18,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92048097] [2023-12-25 21:24:18,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92048097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:24:18,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:24:18,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:24:18,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260099754] [2023-12-25 21:24:18,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:24:18,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:24:18,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:24:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:24:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:18,747 INFO L87 Difference]: Start difference. First operand 4825 states and 7955 transitions. Second operand has 4 states, 4 states have (on average 740.75) internal successors, (2963), 4 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:24:18,863 INFO L93 Difference]: Finished difference Result 13292 states and 21956 transitions. [2023-12-25 21:24:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:24:18,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 740.75) internal successors, (2963), 4 states have internal predecessors, (2963), 0 states have call successors, (0), 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 3214 [2023-12-25 21:24:18,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:24:18,873 INFO L225 Difference]: With dead ends: 13292 [2023-12-25 21:24:18,873 INFO L226 Difference]: Without dead ends: 9009 [2023-12-25 21:24:18,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:24:18,877 INFO L413 NwaCegarLoop]: 7778 mSDtfsCounter, 6861 mSDsluCounter, 14907 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6861 SdHoareTripleChecker+Valid, 22685 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:24:18,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6861 Valid, 22685 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:24:18,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9009 states. [2023-12-25 21:24:18,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9009 to 4833. [2023-12-25 21:24:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4833 states, 4832 states have (on average 1.648385761589404) internal successors, (7965), 4832 states have internal predecessors, (7965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:18,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4833 states to 4833 states and 7965 transitions. [2023-12-25 21:24:18,922 INFO L78 Accepts]: Start accepts. Automaton has 4833 states and 7965 transitions. Word has length 3214 [2023-12-25 21:24:18,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:24:18,923 INFO L495 AbstractCegarLoop]: Abstraction has 4833 states and 7965 transitions. [2023-12-25 21:24:18,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 740.75) internal successors, (2963), 4 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:18,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4833 states and 7965 transitions. [2023-12-25 21:24:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3216 [2023-12-25 21:24:18,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:24:18,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 21:24:18,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-25 21:24:18,976 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:24:18,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:24:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1550487753, now seen corresponding path program 1 times [2023-12-25 21:24:18,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:24:18,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814987825] [2023-12-25 21:24:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:24:18,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:24:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:24:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-25 21:24:26,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:24:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814987825] [2023-12-25 21:24:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814987825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:24:26,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:24:26,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:24:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190208770] [2023-12-25 21:24:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:24:26,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:24:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:24:26,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:24:26,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:26,186 INFO L87 Difference]: Start difference. First operand 4833 states and 7965 transitions. Second operand has 4 states, 4 states have (on average 741.5) internal successors, (2966), 4 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:24:26,290 INFO L93 Difference]: Finished difference Result 13310 states and 21978 transitions. [2023-12-25 21:24:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:24:26,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 741.5) internal successors, (2966), 4 states have internal predecessors, (2966), 0 states have call successors, (0), 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 3215 [2023-12-25 21:24:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:24:26,359 INFO L225 Difference]: With dead ends: 13310 [2023-12-25 21:24:26,359 INFO L226 Difference]: Without dead ends: 9016 [2023-12-25 21:24:26,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:24:26,361 INFO L413 NwaCegarLoop]: 7773 mSDtfsCounter, 6861 mSDsluCounter, 14902 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6861 SdHoareTripleChecker+Valid, 22675 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:24:26,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6861 Valid, 22675 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:24:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2023-12-25 21:24:26,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 4837. [2023-12-25 21:24:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4837 states, 4836 states have (on average 1.6478494623655915) internal successors, (7969), 4836 states have internal predecessors, (7969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4837 states to 4837 states and 7969 transitions. [2023-12-25 21:24:26,402 INFO L78 Accepts]: Start accepts. Automaton has 4837 states and 7969 transitions. Word has length 3215 [2023-12-25 21:24:26,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:24:26,403 INFO L495 AbstractCegarLoop]: Abstraction has 4837 states and 7969 transitions. [2023-12-25 21:24:26,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 741.5) internal successors, (2966), 4 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4837 states and 7969 transitions. [2023-12-25 21:24:26,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3217 [2023-12-25 21:24:26,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:24:26,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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[2023-12-25 21:24:26,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-25 21:24:26,456 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:24:26,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:24:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1766588255, now seen corresponding path program 1 times [2023-12-25 21:24:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:24:26,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116261126] [2023-12-25 21:24:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:24:26,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:24:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:24:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-25 21:24:33,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:24:33,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116261126] [2023-12-25 21:24:33,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116261126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:24:33,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:24:33,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:24:33,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896738305] [2023-12-25 21:24:33,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:24:33,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:24:33,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:24:33,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:24:33,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:33,381 INFO L87 Difference]: Start difference. First operand 4837 states and 7969 transitions. Second operand has 4 states, 4 states have (on average 742.5) internal successors, (2970), 4 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:24:33,489 INFO L93 Difference]: Finished difference Result 13328 states and 21996 transitions. [2023-12-25 21:24:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:24:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 742.5) internal successors, (2970), 4 states have internal predecessors, (2970), 0 states have call successors, (0), 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 3216 [2023-12-25 21:24:33,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:24:33,499 INFO L225 Difference]: With dead ends: 13328 [2023-12-25 21:24:33,499 INFO L226 Difference]: Without dead ends: 9024 [2023-12-25 21:24:33,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:24:33,503 INFO L413 NwaCegarLoop]: 7765 mSDtfsCounter, 6856 mSDsluCounter, 14894 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6856 SdHoareTripleChecker+Valid, 22659 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:24:33,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6856 Valid, 22659 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:24:33,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9024 states. [2023-12-25 21:24:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9024 to 4847. [2023-12-25 21:24:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4846 states have (on average 1.646925299215848) internal successors, (7981), 4846 states have internal predecessors, (7981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 7981 transitions. [2023-12-25 21:24:33,551 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 7981 transitions. Word has length 3216 [2023-12-25 21:24:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:24:33,553 INFO L495 AbstractCegarLoop]: Abstraction has 4847 states and 7981 transitions. [2023-12-25 21:24:33,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 742.5) internal successors, (2970), 4 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 7981 transitions. [2023-12-25 21:24:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3218 [2023-12-25 21:24:33,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:24:33,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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1] [2023-12-25 21:24:33,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-25 21:24:33,606 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:24:33,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:24:33,606 INFO L85 PathProgramCache]: Analyzing trace with hash -712258691, now seen corresponding path program 1 times [2023-12-25 21:24:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:24:33,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103519571] [2023-12-25 21:24:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:24:33,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:24:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:24:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-12-25 21:24:40,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:24:40,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103519571] [2023-12-25 21:24:40,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103519571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:24:40,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:24:40,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:24:40,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074798880] [2023-12-25 21:24:40,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:24:40,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:24:40,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:24:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:24:40,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:40,666 INFO L87 Difference]: Start difference. First operand 4847 states and 7981 transitions. Second operand has 4 states, 4 states have (on average 743.25) internal successors, (2973), 4 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:24:40,773 INFO L93 Difference]: Finished difference Result 13352 states and 22024 transitions. [2023-12-25 21:24:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:24:40,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 743.25) internal successors, (2973), 4 states have internal predecessors, (2973), 0 states have call successors, (0), 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 3217 [2023-12-25 21:24:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:24:40,783 INFO L225 Difference]: With dead ends: 13352 [2023-12-25 21:24:40,783 INFO L226 Difference]: Without dead ends: 9035 [2023-12-25 21:24:40,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:24:40,787 INFO L413 NwaCegarLoop]: 7760 mSDtfsCounter, 6855 mSDsluCounter, 14889 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6855 SdHoareTripleChecker+Valid, 22649 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:24:40,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6855 Valid, 22649 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:24:40,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9035 states. [2023-12-25 21:24:40,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9035 to 4851. [2023-12-25 21:24:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.6463917525773195) internal successors, (7985), 4850 states have internal predecessors, (7985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 7985 transitions. [2023-12-25 21:24:40,836 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 7985 transitions. Word has length 3217 [2023-12-25 21:24:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:24:40,838 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 7985 transitions. [2023-12-25 21:24:40,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 743.25) internal successors, (2973), 4 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 7985 transitions. [2023-12-25 21:24:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3219 [2023-12-25 21:24:40,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:24:40,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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1, 1, 1] [2023-12-25 21:24:40,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-25 21:24:40,891 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:24:40,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:24:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash -706332411, now seen corresponding path program 1 times [2023-12-25 21:24:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:24:40,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229823842] [2023-12-25 21:24:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:24:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:24:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:24:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-25 21:24:47,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:24:47,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229823842] [2023-12-25 21:24:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229823842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:24:47,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:24:47,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:24:47,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381664580] [2023-12-25 21:24:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:24:47,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:24:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:24:47,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:24:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:47,867 INFO L87 Difference]: Start difference. First operand 4851 states and 7985 transitions. Second operand has 4 states, 4 states have (on average 743.75) internal successors, (2975), 4 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:47,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:24:47,988 INFO L93 Difference]: Finished difference Result 13196 states and 21835 transitions. [2023-12-25 21:24:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:24:47,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 743.75) internal successors, (2975), 4 states have internal predecessors, (2975), 0 states have call successors, (0), 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 3218 [2023-12-25 21:24:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:24:47,997 INFO L225 Difference]: With dead ends: 13196 [2023-12-25 21:24:47,997 INFO L226 Difference]: Without dead ends: 8978 [2023-12-25 21:24:48,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:48,001 INFO L413 NwaCegarLoop]: 13972 mSDtfsCounter, 6847 mSDsluCounter, 21098 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6847 SdHoareTripleChecker+Valid, 35070 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:24:48,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6847 Valid, 35070 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:24:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8978 states. [2023-12-25 21:24:48,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8978 to 4853. [2023-12-25 21:24:48,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4853 states, 4852 states have (on average 1.6461253091508656) internal successors, (7987), 4852 states have internal predecessors, (7987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4853 states to 4853 states and 7987 transitions. [2023-12-25 21:24:48,096 INFO L78 Accepts]: Start accepts. Automaton has 4853 states and 7987 transitions. Word has length 3218 [2023-12-25 21:24:48,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:24:48,097 INFO L495 AbstractCegarLoop]: Abstraction has 4853 states and 7987 transitions. [2023-12-25 21:24:48,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 743.75) internal successors, (2975), 4 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:48,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4853 states and 7987 transitions. [2023-12-25 21:24:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3220 [2023-12-25 21:24:48,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:24:48,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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1, 1, 1] [2023-12-25 21:24:48,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-25 21:24:48,151 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:24:48,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:24:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash -970955371, now seen corresponding path program 1 times [2023-12-25 21:24:48,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:24:48,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831725186] [2023-12-25 21:24:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:24:48,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:24:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:24:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-25 21:24:54,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:24:54,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831725186] [2023-12-25 21:24:54,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831725186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:24:54,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:24:54,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:24:54,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879799032] [2023-12-25 21:24:54,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:24:54,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:24:54,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:24:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:24:54,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:24:54,994 INFO L87 Difference]: Start difference. First operand 4853 states and 7987 transitions. Second operand has 4 states, 4 states have (on average 744.5) internal successors, (2978), 4 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:55,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:24:55,100 INFO L93 Difference]: Finished difference Result 13376 states and 22048 transitions. [2023-12-25 21:24:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:24:55,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 744.5) internal successors, (2978), 4 states have internal predecessors, (2978), 0 states have call successors, (0), 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 3219 [2023-12-25 21:24:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:24:55,110 INFO L225 Difference]: With dead ends: 13376 [2023-12-25 21:24:55,110 INFO L226 Difference]: Without dead ends: 9047 [2023-12-25 21:24:55,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:24:55,115 INFO L413 NwaCegarLoop]: 7752 mSDtfsCounter, 6849 mSDsluCounter, 14881 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6849 SdHoareTripleChecker+Valid, 22633 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:24:55,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6849 Valid, 22633 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:24:55,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9047 states. [2023-12-25 21:24:55,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9047 to 4861. [2023-12-25 21:24:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4861 states, 4860 states have (on average 1.6454732510288066) internal successors, (7997), 4860 states have internal predecessors, (7997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4861 states to 4861 states and 7997 transitions. [2023-12-25 21:24:55,166 INFO L78 Accepts]: Start accepts. Automaton has 4861 states and 7997 transitions. Word has length 3219 [2023-12-25 21:24:55,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:24:55,167 INFO L495 AbstractCegarLoop]: Abstraction has 4861 states and 7997 transitions. [2023-12-25 21:24:55,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 744.5) internal successors, (2978), 4 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:24:55,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4861 states and 7997 transitions. [2023-12-25 21:24:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3221 [2023-12-25 21:24:55,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:24:55,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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1, 1, 1, 1, 1] [2023-12-25 21:24:55,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-25 21:24:55,244 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:24:55,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:24:55,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1541806165, now seen corresponding path program 1 times [2023-12-25 21:24:55,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:24:55,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662057266] [2023-12-25 21:24:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:24:55,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:24:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:25:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-12-25 21:25:01,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:25:01,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662057266] [2023-12-25 21:25:01,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662057266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:25:01,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:25:01,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:25:01,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177415126] [2023-12-25 21:25:01,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:25:01,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:25:01,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:25:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:25:01,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:25:01,947 INFO L87 Difference]: Start difference. First operand 4861 states and 7997 transitions. Second operand has 4 states, 4 states have (on average 745.25) internal successors, (2981), 4 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:02,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:25:02,050 INFO L93 Difference]: Finished difference Result 13394 states and 22070 transitions. [2023-12-25 21:25:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:25:02,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 745.25) internal successors, (2981), 4 states have internal predecessors, (2981), 0 states have call successors, (0), 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 3220 [2023-12-25 21:25:02,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:25:02,059 INFO L225 Difference]: With dead ends: 13394 [2023-12-25 21:25:02,060 INFO L226 Difference]: Without dead ends: 9054 [2023-12-25 21:25:02,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:25:02,063 INFO L413 NwaCegarLoop]: 7747 mSDtfsCounter, 6849 mSDsluCounter, 14876 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6849 SdHoareTripleChecker+Valid, 22623 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:25:02,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6849 Valid, 22623 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:25:02,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9054 states. [2023-12-25 21:25:02,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9054 to 4865. [2023-12-25 21:25:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4865 states, 4864 states have (on average 1.6449424342105263) internal successors, (8001), 4864 states have internal predecessors, (8001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 8001 transitions. [2023-12-25 21:25:02,108 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 8001 transitions. Word has length 3220 [2023-12-25 21:25:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:25:02,109 INFO L495 AbstractCegarLoop]: Abstraction has 4865 states and 8001 transitions. [2023-12-25 21:25:02,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 745.25) internal successors, (2981), 4 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 8001 transitions. [2023-12-25 21:25:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3222 [2023-12-25 21:25:02,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:25:02,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:25:02,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-25 21:25:02,162 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:25:02,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:25:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1017676271, now seen corresponding path program 1 times [2023-12-25 21:25:02,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:25:02,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458912521] [2023-12-25 21:25:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:25:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:25:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:25:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-25 21:25:09,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:25:09,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458912521] [2023-12-25 21:25:09,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458912521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:25:09,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:25:09,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:25:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358781103] [2023-12-25 21:25:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:25:09,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:25:09,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:25:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:25:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:25:09,016 INFO L87 Difference]: Start difference. First operand 4865 states and 8001 transitions. Second operand has 4 states, 4 states have (on average 746.25) internal successors, (2985), 4 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:25:09,126 INFO L93 Difference]: Finished difference Result 13412 states and 22089 transitions. [2023-12-25 21:25:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:25:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 746.25) internal successors, (2985), 4 states have internal predecessors, (2985), 0 states have call successors, (0), 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 3221 [2023-12-25 21:25:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:25:09,136 INFO L225 Difference]: With dead ends: 13412 [2023-12-25 21:25:09,136 INFO L226 Difference]: Without dead ends: 9062 [2023-12-25 21:25:09,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:25:09,141 INFO L413 NwaCegarLoop]: 7738 mSDtfsCounter, 6844 mSDsluCounter, 14867 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6844 SdHoareTripleChecker+Valid, 22605 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:25:09,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6844 Valid, 22605 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:25:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9062 states. [2023-12-25 21:25:09,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9062 to 4875. [2023-12-25 21:25:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 1.644234714813295) internal successors, (8014), 4874 states have internal predecessors, (8014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 8014 transitions. [2023-12-25 21:25:09,194 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 8014 transitions. Word has length 3221 [2023-12-25 21:25:09,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:25:09,195 INFO L495 AbstractCegarLoop]: Abstraction has 4875 states and 8014 transitions. [2023-12-25 21:25:09,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 746.25) internal successors, (2985), 4 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:09,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 8014 transitions. [2023-12-25 21:25:09,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3223 [2023-12-25 21:25:09,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:25:09,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:25:09,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-25 21:25:09,248 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:25:09,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:25:09,248 INFO L85 PathProgramCache]: Analyzing trace with hash 663932663, now seen corresponding path program 1 times [2023-12-25 21:25:09,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:25:09,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231592160] [2023-12-25 21:25:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:25:09,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:25:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:25:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-12-25 21:25:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:25:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231592160] [2023-12-25 21:25:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231592160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:25:16,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:25:16,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:25:16,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603405699] [2023-12-25 21:25:16,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:25:16,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:25:16,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:25:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:25:16,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:25:16,095 INFO L87 Difference]: Start difference. First operand 4875 states and 8014 transitions. Second operand has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:25:16,202 INFO L93 Difference]: Finished difference Result 13436 states and 22119 transitions. [2023-12-25 21:25:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:25:16,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 0 states have call successors, (0), 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 3222 [2023-12-25 21:25:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:25:16,212 INFO L225 Difference]: With dead ends: 13436 [2023-12-25 21:25:16,212 INFO L226 Difference]: Without dead ends: 9073 [2023-12-25 21:25:16,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:25:16,216 INFO L413 NwaCegarLoop]: 7733 mSDtfsCounter, 6843 mSDsluCounter, 14862 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6843 SdHoareTripleChecker+Valid, 22595 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:25:16,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6843 Valid, 22595 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:25:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9073 states. [2023-12-25 21:25:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9073 to 4879. [2023-12-25 21:25:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4879 states, 4878 states have (on average 1.6437064370643706) internal successors, (8018), 4878 states have internal predecessors, (8018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 8018 transitions. [2023-12-25 21:25:16,265 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 8018 transitions. Word has length 3222 [2023-12-25 21:25:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:25:16,266 INFO L495 AbstractCegarLoop]: Abstraction has 4879 states and 8018 transitions. [2023-12-25 21:25:16,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 747.0) internal successors, (2988), 4 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 8018 transitions. [2023-12-25 21:25:16,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3224 [2023-12-25 21:25:16,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:25:16,319 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:25:16,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-25 21:25:16,319 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:25:16,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:25:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1032569481, now seen corresponding path program 1 times [2023-12-25 21:25:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:25:16,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989536592] [2023-12-25 21:25:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:25:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:25:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:25:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-25 21:25:23,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:25:23,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989536592] [2023-12-25 21:25:23,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989536592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:25:23,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:25:23,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:25:23,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516861616] [2023-12-25 21:25:23,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:25:23,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:25:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:25:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:25:23,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:25:23,878 INFO L87 Difference]: Start difference. First operand 4879 states and 8018 transitions. Second operand has 4 states, 4 states have (on average 747.5) internal successors, (2990), 4 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:25:24,096 INFO L93 Difference]: Finished difference Result 13234 states and 21874 transitions. [2023-12-25 21:25:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:25:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 747.5) internal successors, (2990), 4 states have internal predecessors, (2990), 0 states have call successors, (0), 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 3223 [2023-12-25 21:25:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:25:24,104 INFO L225 Difference]: With dead ends: 13234 [2023-12-25 21:25:24,104 INFO L226 Difference]: Without dead ends: 9002 [2023-12-25 21:25:24,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:25:24,106 INFO L413 NwaCegarLoop]: 13957 mSDtfsCounter, 6835 mSDsluCounter, 21083 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6835 SdHoareTripleChecker+Valid, 35040 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:25:24,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6835 Valid, 35040 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:25:24,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9002 states. [2023-12-25 21:25:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9002 to 4881. [2023-12-25 21:25:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4881 states, 4880 states have (on average 1.6434426229508197) internal successors, (8020), 4880 states have internal predecessors, (8020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4881 states to 4881 states and 8020 transitions. [2023-12-25 21:25:24,155 INFO L78 Accepts]: Start accepts. Automaton has 4881 states and 8020 transitions. Word has length 3223 [2023-12-25 21:25:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:25:24,157 INFO L495 AbstractCegarLoop]: Abstraction has 4881 states and 8020 transitions. [2023-12-25 21:25:24,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 747.5) internal successors, (2990), 4 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:24,157 INFO L276 IsEmpty]: Start isEmpty. Operand 4881 states and 8020 transitions. [2023-12-25 21:25:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3225 [2023-12-25 21:25:24,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:25:24,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:25:24,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-25 21:25:24,210 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:25:24,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:25:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash 956646237, now seen corresponding path program 1 times [2023-12-25 21:25:24,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:25:24,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283712669] [2023-12-25 21:25:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:25:24,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:25:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:25:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-25 21:25:31,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:25:31,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283712669] [2023-12-25 21:25:31,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283712669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:25:31,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:25:31,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:25:31,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561071577] [2023-12-25 21:25:31,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:25:31,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:25:31,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:25:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:25:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:25:31,861 INFO L87 Difference]: Start difference. First operand 4881 states and 8020 transitions. Second operand has 5 states, 5 states have (on average 598.6) internal successors, (2993), 5 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:25:31,993 INFO L93 Difference]: Finished difference Result 13460 states and 22144 transitions. [2023-12-25 21:25:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:25:31,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 598.6) internal successors, (2993), 5 states have internal predecessors, (2993), 0 states have call successors, (0), 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 3224 [2023-12-25 21:25:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:25:32,004 INFO L225 Difference]: With dead ends: 13460 [2023-12-25 21:25:32,004 INFO L226 Difference]: Without dead ends: 9085 [2023-12-25 21:25:32,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:25:32,008 INFO L413 NwaCegarLoop]: 7723 mSDtfsCounter, 6839 mSDsluCounter, 21686 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6839 SdHoareTripleChecker+Valid, 29409 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:25:32,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6839 Valid, 29409 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:25:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2023-12-25 21:25:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 4889. [2023-12-25 21:25:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4889 states, 4888 states have (on average 1.642798690671031) internal successors, (8030), 4888 states have internal predecessors, (8030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:32,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4889 states to 4889 states and 8030 transitions. [2023-12-25 21:25:32,145 INFO L78 Accepts]: Start accepts. Automaton has 4889 states and 8030 transitions. Word has length 3224 [2023-12-25 21:25:32,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:25:32,146 INFO L495 AbstractCegarLoop]: Abstraction has 4889 states and 8030 transitions. [2023-12-25 21:25:32,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 598.6) internal successors, (2993), 5 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:32,146 INFO L276 IsEmpty]: Start isEmpty. Operand 4889 states and 8030 transitions. [2023-12-25 21:25:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3226 [2023-12-25 21:25:32,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:25:32,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:25:32,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-25 21:25:32,200 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:25:32,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:25:32,201 INFO L85 PathProgramCache]: Analyzing trace with hash -777076827, now seen corresponding path program 1 times [2023-12-25 21:25:32,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:25:32,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907131429] [2023-12-25 21:25:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:25:32,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:25:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:25:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-25 21:25:39,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:25:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907131429] [2023-12-25 21:25:39,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907131429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:25:39,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:25:39,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:25:39,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989877659] [2023-12-25 21:25:39,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:25:39,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:25:39,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:25:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:25:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:25:39,233 INFO L87 Difference]: Start difference. First operand 4889 states and 8030 transitions. Second operand has 4 states, 4 states have (on average 749.0) internal successors, (2996), 4 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:39,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:25:39,336 INFO L93 Difference]: Finished difference Result 13478 states and 22166 transitions. [2023-12-25 21:25:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:25:39,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 749.0) internal successors, (2996), 4 states have internal predecessors, (2996), 0 states have call successors, (0), 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 3225 [2023-12-25 21:25:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:25:39,345 INFO L225 Difference]: With dead ends: 13478 [2023-12-25 21:25:39,345 INFO L226 Difference]: Without dead ends: 9092 [2023-12-25 21:25:39,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:25:39,349 INFO L413 NwaCegarLoop]: 7720 mSDtfsCounter, 6837 mSDsluCounter, 14849 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6837 SdHoareTripleChecker+Valid, 22569 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:25:39,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6837 Valid, 22569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:25:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9092 states. [2023-12-25 21:25:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9092 to 4893. [2023-12-25 21:25:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4893 states, 4892 states have (on average 1.64227309893704) internal successors, (8034), 4892 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:39,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4893 states to 4893 states and 8034 transitions. [2023-12-25 21:25:39,392 INFO L78 Accepts]: Start accepts. Automaton has 4893 states and 8034 transitions. Word has length 3225 [2023-12-25 21:25:39,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:25:39,393 INFO L495 AbstractCegarLoop]: Abstraction has 4893 states and 8034 transitions. [2023-12-25 21:25:39,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 749.0) internal successors, (2996), 4 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4893 states and 8034 transitions. [2023-12-25 21:25:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3227 [2023-12-25 21:25:39,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:25:39,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:25:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-25 21:25:39,446 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:25:39,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:25:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash -446879675, now seen corresponding path program 1 times [2023-12-25 21:25:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:25:39,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134210305] [2023-12-25 21:25:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:25:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:25:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:25:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-12-25 21:25:46,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:25:46,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134210305] [2023-12-25 21:25:46,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134210305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:25:46,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:25:46,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:25:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103433010] [2023-12-25 21:25:46,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:25:46,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:25:46,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:25:46,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:25:46,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:25:46,602 INFO L87 Difference]: Start difference. First operand 4893 states and 8034 transitions. Second operand has 4 states, 4 states have (on average 750.0) internal successors, (3000), 4 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:25:46,778 INFO L93 Difference]: Finished difference Result 13496 states and 22184 transitions. [2023-12-25 21:25:46,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:25:46,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 750.0) internal successors, (3000), 4 states have internal predecessors, (3000), 0 states have call successors, (0), 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 3226 [2023-12-25 21:25:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:25:46,786 INFO L225 Difference]: With dead ends: 13496 [2023-12-25 21:25:46,786 INFO L226 Difference]: Without dead ends: 9100 [2023-12-25 21:25:46,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:25:46,789 INFO L413 NwaCegarLoop]: 7712 mSDtfsCounter, 6832 mSDsluCounter, 14841 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6832 SdHoareTripleChecker+Valid, 22553 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:25:46,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6832 Valid, 22553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:25:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9100 states. [2023-12-25 21:25:46,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9100 to 4903. [2023-12-25 21:25:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4903 states, 4902 states have (on average 1.6413708690330477) internal successors, (8046), 4902 states have internal predecessors, (8046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 8046 transitions. [2023-12-25 21:25:46,833 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 8046 transitions. Word has length 3226 [2023-12-25 21:25:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:25:46,834 INFO L495 AbstractCegarLoop]: Abstraction has 4903 states and 8046 transitions. [2023-12-25 21:25:46,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 750.0) internal successors, (3000), 4 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 8046 transitions. [2023-12-25 21:25:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3228 [2023-12-25 21:25:46,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:25:46,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:25:46,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-25 21:25:46,887 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:25:46,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:25:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1648764505, now seen corresponding path program 1 times [2023-12-25 21:25:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:25:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485552550] [2023-12-25 21:25:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:25:46,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:25:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:25:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-12-25 21:25:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:25:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485552550] [2023-12-25 21:25:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485552550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:25:54,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:25:54,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:25:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119613880] [2023-12-25 21:25:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:25:54,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:25:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:25:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:25:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:25:54,398 INFO L87 Difference]: Start difference. First operand 4903 states and 8046 transitions. Second operand has 4 states, 4 states have (on average 750.75) internal successors, (3003), 4 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:25:54,502 INFO L93 Difference]: Finished difference Result 13520 states and 22212 transitions. [2023-12-25 21:25:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:25:54,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 750.75) internal successors, (3003), 4 states have internal predecessors, (3003), 0 states have call successors, (0), 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 3227 [2023-12-25 21:25:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:25:54,512 INFO L225 Difference]: With dead ends: 13520 [2023-12-25 21:25:54,512 INFO L226 Difference]: Without dead ends: 9111 [2023-12-25 21:25:54,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:25:54,515 INFO L413 NwaCegarLoop]: 7707 mSDtfsCounter, 6831 mSDsluCounter, 14836 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6831 SdHoareTripleChecker+Valid, 22543 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:25:54,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6831 Valid, 22543 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:25:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9111 states. [2023-12-25 21:25:54,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9111 to 4907. [2023-12-25 21:25:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4907 states, 4906 states have (on average 1.6408479412963717) internal successors, (8050), 4906 states have internal predecessors, (8050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 8050 transitions. [2023-12-25 21:25:54,561 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 8050 transitions. Word has length 3227 [2023-12-25 21:25:54,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:25:54,563 INFO L495 AbstractCegarLoop]: Abstraction has 4907 states and 8050 transitions. [2023-12-25 21:25:54,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 750.75) internal successors, (3003), 4 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:25:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 8050 transitions. [2023-12-25 21:25:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3229 [2023-12-25 21:25:54,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:25:54,669 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:25:54,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-25 21:25:54,669 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:25:54,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:25:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1232499031, now seen corresponding path program 1 times [2023-12-25 21:25:54,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:25:54,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331581364] [2023-12-25 21:25:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:25:54,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:25:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:26:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-25 21:26:01,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:26:01,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331581364] [2023-12-25 21:26:01,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331581364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:26:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:26:01,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:26:01,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867304143] [2023-12-25 21:26:01,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:26:01,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:26:01,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:26:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:26:01,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:26:01,249 INFO L87 Difference]: Start difference. First operand 4907 states and 8050 transitions. Second operand has 4 states, 4 states have (on average 751.25) internal successors, (3005), 4 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:26:01,395 INFO L93 Difference]: Finished difference Result 13272 states and 21912 transitions. [2023-12-25 21:26:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:26:01,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 751.25) internal successors, (3005), 4 states have internal predecessors, (3005), 0 states have call successors, (0), 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 3228 [2023-12-25 21:26:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:26:01,404 INFO L225 Difference]: With dead ends: 13272 [2023-12-25 21:26:01,404 INFO L226 Difference]: Without dead ends: 9026 [2023-12-25 21:26:01,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:26:01,407 INFO L413 NwaCegarLoop]: 13941 mSDtfsCounter, 6823 mSDsluCounter, 21067 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6823 SdHoareTripleChecker+Valid, 35008 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:26:01,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6823 Valid, 35008 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:26:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2023-12-25 21:26:01,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 4909. [2023-12-25 21:26:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4909 states, 4908 states have (on average 1.6405867970660146) internal successors, (8052), 4908 states have internal predecessors, (8052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4909 states to 4909 states and 8052 transitions. [2023-12-25 21:26:01,458 INFO L78 Accepts]: Start accepts. Automaton has 4909 states and 8052 transitions. Word has length 3228 [2023-12-25 21:26:01,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:26:01,460 INFO L495 AbstractCegarLoop]: Abstraction has 4909 states and 8052 transitions. [2023-12-25 21:26:01,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 751.25) internal successors, (3005), 4 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4909 states and 8052 transitions. [2023-12-25 21:26:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3230 [2023-12-25 21:26:01,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:26:01,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:26:01,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-25 21:26:01,514 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:26:01,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:26:01,514 INFO L85 PathProgramCache]: Analyzing trace with hash -380513423, now seen corresponding path program 1 times [2023-12-25 21:26:01,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:26:01,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588784720] [2023-12-25 21:26:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:26:01,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:26:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:26:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-25 21:26:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:26:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588784720] [2023-12-25 21:26:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588784720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:26:08,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:26:08,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:26:08,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677534674] [2023-12-25 21:26:08,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:26:08,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:26:08,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:26:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:26:08,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:26:08,610 INFO L87 Difference]: Start difference. First operand 4909 states and 8052 transitions. Second operand has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:26:08,717 INFO L93 Difference]: Finished difference Result 13544 states and 22236 transitions. [2023-12-25 21:26:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:26:08,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 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 3229 [2023-12-25 21:26:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:26:08,728 INFO L225 Difference]: With dead ends: 13544 [2023-12-25 21:26:08,728 INFO L226 Difference]: Without dead ends: 9123 [2023-12-25 21:26:08,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:26:08,732 INFO L413 NwaCegarLoop]: 7699 mSDtfsCounter, 6825 mSDsluCounter, 14828 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6825 SdHoareTripleChecker+Valid, 22527 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:26:08,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6825 Valid, 22527 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:26:08,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9123 states. [2023-12-25 21:26:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9123 to 4917. [2023-12-25 21:26:08,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4917 states, 4916 states have (on average 1.6399511798209927) internal successors, (8062), 4916 states have internal predecessors, (8062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4917 states to 4917 states and 8062 transitions. [2023-12-25 21:26:08,780 INFO L78 Accepts]: Start accepts. Automaton has 4917 states and 8062 transitions. Word has length 3229 [2023-12-25 21:26:08,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:26:08,781 INFO L495 AbstractCegarLoop]: Abstraction has 4917 states and 8062 transitions. [2023-12-25 21:26:08,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 4917 states and 8062 transitions. [2023-12-25 21:26:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3231 [2023-12-25 21:26:08,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:26:08,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:26:08,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-25 21:26:08,863 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:26:08,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:26:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash 8755919, now seen corresponding path program 1 times [2023-12-25 21:26:08,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:26:08,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710863323] [2023-12-25 21:26:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:26:08,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:26:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:26:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-25 21:26:15,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:26:15,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710863323] [2023-12-25 21:26:15,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710863323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:26:15,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:26:15,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:26:15,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897831491] [2023-12-25 21:26:15,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:26:15,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:26:15,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:26:15,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:26:15,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:26:15,677 INFO L87 Difference]: Start difference. First operand 4917 states and 8062 transitions. Second operand has 4 states, 4 states have (on average 752.75) internal successors, (3011), 4 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:26:15,795 INFO L93 Difference]: Finished difference Result 13562 states and 22258 transitions. [2023-12-25 21:26:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:26:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 752.75) internal successors, (3011), 4 states have internal predecessors, (3011), 0 states have call successors, (0), 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 3230 [2023-12-25 21:26:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:26:15,804 INFO L225 Difference]: With dead ends: 13562 [2023-12-25 21:26:15,804 INFO L226 Difference]: Without dead ends: 9130 [2023-12-25 21:26:15,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:26:15,808 INFO L413 NwaCegarLoop]: 7694 mSDtfsCounter, 6825 mSDsluCounter, 14823 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6825 SdHoareTripleChecker+Valid, 22517 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:26:15,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6825 Valid, 22517 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:26:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9130 states. [2023-12-25 21:26:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9130 to 4921. [2023-12-25 21:26:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4921 states, 4920 states have (on average 1.639430894308943) internal successors, (8066), 4920 states have internal predecessors, (8066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4921 states to 4921 states and 8066 transitions. [2023-12-25 21:26:15,856 INFO L78 Accepts]: Start accepts. Automaton has 4921 states and 8066 transitions. Word has length 3230 [2023-12-25 21:26:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:26:15,858 INFO L495 AbstractCegarLoop]: Abstraction has 4921 states and 8066 transitions. [2023-12-25 21:26:15,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 752.75) internal successors, (3011), 4 states have internal predecessors, (3011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4921 states and 8066 transitions. [2023-12-25 21:26:15,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3232 [2023-12-25 21:26:15,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:26:15,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:26:15,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-25 21:26:15,936 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:26:15,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:26:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1974488501, now seen corresponding path program 1 times [2023-12-25 21:26:15,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:26:15,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576603531] [2023-12-25 21:26:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:26:15,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:26:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:26:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-25 21:26:22,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:26:22,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576603531] [2023-12-25 21:26:22,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576603531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:26:22,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:26:22,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:26:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897145113] [2023-12-25 21:26:22,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:26:22,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:26:22,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:26:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:26:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:26:22,667 INFO L87 Difference]: Start difference. First operand 4921 states and 8066 transitions. Second operand has 4 states, 4 states have (on average 753.25) internal successors, (3013), 4 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:26:22,807 INFO L93 Difference]: Finished difference Result 13291 states and 21931 transitions. [2023-12-25 21:26:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:26:22,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 753.25) internal successors, (3013), 4 states have internal predecessors, (3013), 0 states have call successors, (0), 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 3231 [2023-12-25 21:26:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:26:22,818 INFO L225 Difference]: With dead ends: 13291 [2023-12-25 21:26:22,818 INFO L226 Difference]: Without dead ends: 9038 [2023-12-25 21:26:22,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:26:22,823 INFO L413 NwaCegarLoop]: 13933 mSDtfsCounter, 6817 mSDsluCounter, 21059 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6817 SdHoareTripleChecker+Valid, 34992 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:26:22,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6817 Valid, 34992 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:26:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9038 states. [2023-12-25 21:26:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9038 to 4923. [2023-12-25 21:26:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4923 states, 4922 states have (on average 1.639171068671272) internal successors, (8068), 4922 states have internal predecessors, (8068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 8068 transitions. [2023-12-25 21:26:22,877 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 8068 transitions. Word has length 3231 [2023-12-25 21:26:22,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:26:22,878 INFO L495 AbstractCegarLoop]: Abstraction has 4923 states and 8068 transitions. [2023-12-25 21:26:22,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 753.25) internal successors, (3013), 4 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 8068 transitions. [2023-12-25 21:26:22,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3233 [2023-12-25 21:26:22,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:26:22,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:26:22,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-25 21:26:22,932 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:26:22,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:26:22,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1783990221, now seen corresponding path program 1 times [2023-12-25 21:26:22,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:26:22,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880011964] [2023-12-25 21:26:22,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:26:22,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:26:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:26:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-12-25 21:26:30,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:26:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880011964] [2023-12-25 21:26:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880011964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:26:30,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:26:30,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:26:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106474305] [2023-12-25 21:26:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:26:30,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:26:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:26:30,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:26:30,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:26:30,487 INFO L87 Difference]: Start difference. First operand 4923 states and 8068 transitions. Second operand has 5 states, 5 states have (on average 603.2) internal successors, (3016), 5 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:26:30,618 INFO L93 Difference]: Finished difference Result 13586 states and 22283 transitions. [2023-12-25 21:26:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:26:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 603.2) internal successors, (3016), 5 states have internal predecessors, (3016), 0 states have call successors, (0), 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 3232 [2023-12-25 21:26:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:26:30,629 INFO L225 Difference]: With dead ends: 13586 [2023-12-25 21:26:30,629 INFO L226 Difference]: Without dead ends: 9142 [2023-12-25 21:26:30,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:26:30,633 INFO L413 NwaCegarLoop]: 7683 mSDtfsCounter, 6821 mSDsluCounter, 21628 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6821 SdHoareTripleChecker+Valid, 29311 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:26:30,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6821 Valid, 29311 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:26:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9142 states. [2023-12-25 21:26:30,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9142 to 4931. [2023-12-25 21:26:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4931 states, 4930 states have (on average 1.6387423935091279) internal successors, (8079), 4930 states have internal predecessors, (8079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4931 states to 4931 states and 8079 transitions. [2023-12-25 21:26:30,686 INFO L78 Accepts]: Start accepts. Automaton has 4931 states and 8079 transitions. Word has length 3232 [2023-12-25 21:26:30,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:26:30,687 INFO L495 AbstractCegarLoop]: Abstraction has 4931 states and 8079 transitions. [2023-12-25 21:26:30,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 603.2) internal successors, (3016), 5 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:30,688 INFO L276 IsEmpty]: Start isEmpty. Operand 4931 states and 8079 transitions. [2023-12-25 21:26:30,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3234 [2023-12-25 21:26:30,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:26:30,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:26:30,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-25 21:26:30,741 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:26:30,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:26:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1061999005, now seen corresponding path program 1 times [2023-12-25 21:26:30,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:26:30,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235260138] [2023-12-25 21:26:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:26:30,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:26:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:26:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 129 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:26:38,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:26:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235260138] [2023-12-25 21:26:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235260138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 21:26:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335509611] [2023-12-25 21:26:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:26:38,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:26:38,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:26:38,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 21:26:38,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 21:26:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:26:41,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 13395 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 21:26:41,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:26:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 97 proven. 40 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-25 21:26:41,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 21:26:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-25 21:26:41,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335509611] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 21:26:41,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 21:26:41,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15 [2023-12-25 21:26:41,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101948778] [2023-12-25 21:26:41,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:26:41,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:26:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:26:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:26:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-25 21:26:41,640 INFO L87 Difference]: Start difference. First operand 4931 states and 8079 transitions. Second operand has 4 states, 4 states have (on average 754.75) internal successors, (3019), 4 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:41,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:26:41,755 INFO L93 Difference]: Finished difference Result 13604 states and 22307 transitions. [2023-12-25 21:26:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:26:41,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 754.75) internal successors, (3019), 4 states have internal predecessors, (3019), 0 states have call successors, (0), 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 3233 [2023-12-25 21:26:41,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:26:41,766 INFO L225 Difference]: With dead ends: 13604 [2023-12-25 21:26:41,767 INFO L226 Difference]: Without dead ends: 9149 [2023-12-25 21:26:41,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6473 GetRequests, 6459 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-25 21:26:41,772 INFO L413 NwaCegarLoop]: 7680 mSDtfsCounter, 6819 mSDsluCounter, 14809 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6819 SdHoareTripleChecker+Valid, 22489 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:26:41,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6819 Valid, 22489 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:26:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2023-12-25 21:26:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 4935. [2023-12-25 21:26:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4935 states, 4934 states have (on average 1.6382245642480746) internal successors, (8083), 4934 states have internal predecessors, (8083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4935 states to 4935 states and 8083 transitions. [2023-12-25 21:26:41,826 INFO L78 Accepts]: Start accepts. Automaton has 4935 states and 8083 transitions. Word has length 3233 [2023-12-25 21:26:41,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:26:41,828 INFO L495 AbstractCegarLoop]: Abstraction has 4935 states and 8083 transitions. [2023-12-25 21:26:41,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 754.75) internal successors, (3019), 4 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:41,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4935 states and 8083 transitions. [2023-12-25 21:26:41,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3235 [2023-12-25 21:26:41,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:26:41,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:26:41,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 21:26:42,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:26:42,081 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:26:42,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:26:42,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1452484697, now seen corresponding path program 1 times [2023-12-25 21:26:42,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:26:42,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653300283] [2023-12-25 21:26:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:26:42,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:26:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:26:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-12-25 21:26:49,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:26:49,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653300283] [2023-12-25 21:26:49,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653300283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:26:49,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:26:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:26:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888243349] [2023-12-25 21:26:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:26:49,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:26:49,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:26:49,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:26:49,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:26:49,860 INFO L87 Difference]: Start difference. First operand 4935 states and 8083 transitions. Second operand has 4 states, 4 states have (on average 755.75) internal successors, (3023), 4 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:26:49,978 INFO L93 Difference]: Finished difference Result 13622 states and 22326 transitions. [2023-12-25 21:26:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:26:49,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 755.75) internal successors, (3023), 4 states have internal predecessors, (3023), 0 states have call successors, (0), 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 3234 [2023-12-25 21:26:49,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:26:49,988 INFO L225 Difference]: With dead ends: 13622 [2023-12-25 21:26:49,988 INFO L226 Difference]: Without dead ends: 9157 [2023-12-25 21:26:49,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:26:49,992 INFO L413 NwaCegarLoop]: 7672 mSDtfsCounter, 6814 mSDsluCounter, 14801 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6814 SdHoareTripleChecker+Valid, 22473 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:26:49,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6814 Valid, 22473 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:26:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9157 states. [2023-12-25 21:26:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9157 to 4945. [2023-12-25 21:26:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4945 states, 4944 states have (on average 1.6373381877022655) internal successors, (8095), 4944 states have internal predecessors, (8095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4945 states to 4945 states and 8095 transitions. [2023-12-25 21:26:50,157 INFO L78 Accepts]: Start accepts. Automaton has 4945 states and 8095 transitions. Word has length 3234 [2023-12-25 21:26:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:26:50,158 INFO L495 AbstractCegarLoop]: Abstraction has 4945 states and 8095 transitions. [2023-12-25 21:26:50,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 755.75) internal successors, (3023), 4 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:26:50,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4945 states and 8095 transitions. [2023-12-25 21:26:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3236 [2023-12-25 21:26:50,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:26:50,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:26:50,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-25 21:26:50,211 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:26:50,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:26:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1753168679, now seen corresponding path program 1 times [2023-12-25 21:26:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:26:50,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084404839] [2023-12-25 21:26:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:26:50,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:26:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:26:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 131 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:26:58,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:26:58,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084404839] [2023-12-25 21:26:58,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084404839] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 21:26:58,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290998908] [2023-12-25 21:26:58,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:26:58,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:26:58,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:26:58,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 21:26:58,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 21:27:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:27:01,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 13402 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 21:27:01,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:27:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 103 proven. 34 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-25 21:27:01,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 21:27:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-12-25 21:27:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290998908] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 21:27:01,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 21:27:01,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15 [2023-12-25 21:27:01,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359054607] [2023-12-25 21:27:01,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:27:01,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:27:01,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:27:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:27:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-25 21:27:01,509 INFO L87 Difference]: Start difference. First operand 4945 states and 8095 transitions. Second operand has 4 states, 4 states have (on average 756.5) internal successors, (3026), 4 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:27:01,617 INFO L93 Difference]: Finished difference Result 13646 states and 22354 transitions. [2023-12-25 21:27:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:27:01,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 756.5) internal successors, (3026), 4 states have internal predecessors, (3026), 0 states have call successors, (0), 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 3235 [2023-12-25 21:27:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:27:01,627 INFO L225 Difference]: With dead ends: 13646 [2023-12-25 21:27:01,627 INFO L226 Difference]: Without dead ends: 9168 [2023-12-25 21:27:01,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6477 GetRequests, 6463 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-25 21:27:01,630 INFO L413 NwaCegarLoop]: 7667 mSDtfsCounter, 6813 mSDsluCounter, 14796 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6813 SdHoareTripleChecker+Valid, 22463 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:27:01,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6813 Valid, 22463 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:27:01,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9168 states. [2023-12-25 21:27:01,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9168 to 4949. [2023-12-25 21:27:01,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4949 states, 4948 states have (on average 1.6368229587712206) internal successors, (8099), 4948 states have internal predecessors, (8099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4949 states to 4949 states and 8099 transitions. [2023-12-25 21:27:01,674 INFO L78 Accepts]: Start accepts. Automaton has 4949 states and 8099 transitions. Word has length 3235 [2023-12-25 21:27:01,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:27:01,676 INFO L495 AbstractCegarLoop]: Abstraction has 4949 states and 8099 transitions. [2023-12-25 21:27:01,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 756.5) internal successors, (3026), 4 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4949 states and 8099 transitions. [2023-12-25 21:27:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3237 [2023-12-25 21:27:01,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:27:01,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:27:01,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 21:27:02,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-12-25 21:27:02,004 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:27:02,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:27:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2113529279, now seen corresponding path program 1 times [2023-12-25 21:27:02,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:27:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089853993] [2023-12-25 21:27:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:27:02,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:27:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:27:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2023-12-25 21:27:08,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:27:08,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089853993] [2023-12-25 21:27:08,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089853993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:27:08,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:27:08,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:27:08,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713142371] [2023-12-25 21:27:08,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:27:08,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:27:08,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:27:08,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:27:08,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:27:08,991 INFO L87 Difference]: Start difference. First operand 4949 states and 8099 transitions. Second operand has 4 states, 4 states have (on average 757.5) internal successors, (3030), 4 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:09,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:27:09,102 INFO L93 Difference]: Finished difference Result 13664 states and 22372 transitions. [2023-12-25 21:27:09,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:27:09,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 757.5) internal successors, (3030), 4 states have internal predecessors, (3030), 0 states have call successors, (0), 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 3236 [2023-12-25 21:27:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:27:09,114 INFO L225 Difference]: With dead ends: 13664 [2023-12-25 21:27:09,114 INFO L226 Difference]: Without dead ends: 9176 [2023-12-25 21:27:09,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:27:09,120 INFO L413 NwaCegarLoop]: 7659 mSDtfsCounter, 6808 mSDsluCounter, 14788 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6808 SdHoareTripleChecker+Valid, 22447 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:27:09,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6808 Valid, 22447 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:27:09,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9176 states. [2023-12-25 21:27:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9176 to 4959. [2023-12-25 21:27:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4959 states, 4958 states have (on average 1.635941912061315) internal successors, (8111), 4958 states have internal predecessors, (8111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 8111 transitions. [2023-12-25 21:27:09,181 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 8111 transitions. Word has length 3236 [2023-12-25 21:27:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:27:09,182 INFO L495 AbstractCegarLoop]: Abstraction has 4959 states and 8111 transitions. [2023-12-25 21:27:09,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 757.5) internal successors, (3030), 4 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 8111 transitions. [2023-12-25 21:27:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3238 [2023-12-25 21:27:09,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:27:09,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:27:09,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-25 21:27:09,260 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:27:09,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:27:09,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1907878003, now seen corresponding path program 1 times [2023-12-25 21:27:09,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:27:09,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924329404] [2023-12-25 21:27:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:27:09,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:27:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:27:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 133 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:27:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:27:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924329404] [2023-12-25 21:27:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924329404] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 21:27:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141132963] [2023-12-25 21:27:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:27:17,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:27:17,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:27:17,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 21:27:17,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-25 21:27:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:27:20,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 13408 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 21:27:20,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 21:27:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 109 proven. 28 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-25 21:27:20,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 21:27:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-25 21:27:20,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141132963] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 21:27:20,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-25 21:27:20,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 15 [2023-12-25 21:27:20,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548855985] [2023-12-25 21:27:20,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:27:20,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:27:20,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:27:20,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:27:20,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-25 21:27:20,584 INFO L87 Difference]: Start difference. First operand 4959 states and 8111 transitions. Second operand has 4 states, 4 states have (on average 758.25) internal successors, (3033), 4 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:20,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:27:20,697 INFO L93 Difference]: Finished difference Result 13688 states and 22400 transitions. [2023-12-25 21:27:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:27:20,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 758.25) internal successors, (3033), 4 states have internal predecessors, (3033), 0 states have call successors, (0), 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 3237 [2023-12-25 21:27:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:27:20,707 INFO L225 Difference]: With dead ends: 13688 [2023-12-25 21:27:20,707 INFO L226 Difference]: Without dead ends: 9187 [2023-12-25 21:27:20,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6481 GetRequests, 6467 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-25 21:27:20,711 INFO L413 NwaCegarLoop]: 7654 mSDtfsCounter, 6807 mSDsluCounter, 14783 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6807 SdHoareTripleChecker+Valid, 22437 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:27:20,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6807 Valid, 22437 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:27:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9187 states. [2023-12-25 21:27:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9187 to 4963. [2023-12-25 21:27:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4962 states have (on average 1.635429262394196) internal successors, (8115), 4962 states have internal predecessors, (8115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 8115 transitions. [2023-12-25 21:27:20,760 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 8115 transitions. Word has length 3237 [2023-12-25 21:27:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:27:20,761 INFO L495 AbstractCegarLoop]: Abstraction has 4963 states and 8115 transitions. [2023-12-25 21:27:20,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 758.25) internal successors, (3033), 4 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 8115 transitions. [2023-12-25 21:27:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3239 [2023-12-25 21:27:20,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:27:20,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:27:20,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-25 21:27:21,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:27:21,058 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:27:21,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:27:21,059 INFO L85 PathProgramCache]: Analyzing trace with hash -697012571, now seen corresponding path program 1 times [2023-12-25 21:27:21,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:27:21,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565676567] [2023-12-25 21:27:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:27:21,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:27:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:27:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-25 21:27:27,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:27:27,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565676567] [2023-12-25 21:27:27,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565676567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:27:27,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:27:27,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:27:27,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729892152] [2023-12-25 21:27:27,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:27:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:27:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:27:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:27:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:27:27,639 INFO L87 Difference]: Start difference. First operand 4963 states and 8115 transitions. Second operand has 4 states, 4 states have (on average 758.75) internal successors, (3035), 4 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:27,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:27:27,777 INFO L93 Difference]: Finished difference Result 13348 states and 21989 transitions. [2023-12-25 21:27:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:27:27,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 758.75) internal successors, (3035), 4 states have internal predecessors, (3035), 0 states have call successors, (0), 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 3238 [2023-12-25 21:27:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:27:27,789 INFO L225 Difference]: With dead ends: 13348 [2023-12-25 21:27:27,789 INFO L226 Difference]: Without dead ends: 9074 [2023-12-25 21:27:27,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:27:27,794 INFO L413 NwaCegarLoop]: 13910 mSDtfsCounter, 6799 mSDsluCounter, 21036 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6799 SdHoareTripleChecker+Valid, 34946 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:27:27,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6799 Valid, 34946 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:27:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2023-12-25 21:27:27,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 4965. [2023-12-25 21:27:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4965 states, 4964 states have (on average 1.6351732473811442) internal successors, (8117), 4964 states have internal predecessors, (8117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4965 states to 4965 states and 8117 transitions. [2023-12-25 21:27:27,853 INFO L78 Accepts]: Start accepts. Automaton has 4965 states and 8117 transitions. Word has length 3238 [2023-12-25 21:27:27,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:27:27,855 INFO L495 AbstractCegarLoop]: Abstraction has 4965 states and 8117 transitions. [2023-12-25 21:27:27,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 758.75) internal successors, (3035), 4 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:27,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4965 states and 8117 transitions. [2023-12-25 21:27:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3240 [2023-12-25 21:27:27,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:27:27,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:27:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-25 21:27:27,933 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:27:27,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:27:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash 291166117, now seen corresponding path program 1 times [2023-12-25 21:27:27,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:27:27,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219603500] [2023-12-25 21:27:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:27:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:27:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:27:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-12-25 21:27:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:27:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219603500] [2023-12-25 21:27:35,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219603500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:27:35,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:27:35,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:27:35,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194630692] [2023-12-25 21:27:35,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:27:35,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:27:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:27:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:27:35,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:27:35,125 INFO L87 Difference]: Start difference. First operand 4965 states and 8117 transitions. Second operand has 4 states, 4 states have (on average 759.5) internal successors, (3038), 4 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:27:35,235 INFO L93 Difference]: Finished difference Result 13712 states and 22424 transitions. [2023-12-25 21:27:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:27:35,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 759.5) internal successors, (3038), 4 states have internal predecessors, (3038), 0 states have call successors, (0), 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 3239 [2023-12-25 21:27:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:27:35,246 INFO L225 Difference]: With dead ends: 13712 [2023-12-25 21:27:35,246 INFO L226 Difference]: Without dead ends: 9199 [2023-12-25 21:27:35,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:27:35,250 INFO L413 NwaCegarLoop]: 7646 mSDtfsCounter, 6801 mSDsluCounter, 14775 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6801 SdHoareTripleChecker+Valid, 22421 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:27:35,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6801 Valid, 22421 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:27:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9199 states. [2023-12-25 21:27:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9199 to 4973. [2023-12-25 21:27:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4973 states, 4972 states have (on average 1.6345534995977473) internal successors, (8127), 4972 states have internal predecessors, (8127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4973 states to 4973 states and 8127 transitions. [2023-12-25 21:27:35,302 INFO L78 Accepts]: Start accepts. Automaton has 4973 states and 8127 transitions. Word has length 3239 [2023-12-25 21:27:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:27:35,303 INFO L495 AbstractCegarLoop]: Abstraction has 4973 states and 8127 transitions. [2023-12-25 21:27:35,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 759.5) internal successors, (3038), 4 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:35,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4973 states and 8127 transitions. [2023-12-25 21:27:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3241 [2023-12-25 21:27:35,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:27:35,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:27:35,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-25 21:27:35,357 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:27:35,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:27:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash -909854645, now seen corresponding path program 1 times [2023-12-25 21:27:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:27:35,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025519608] [2023-12-25 21:27:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:27:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:27:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:27:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-25 21:27:42,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:27:42,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025519608] [2023-12-25 21:27:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025519608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:27:42,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:27:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:27:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94790788] [2023-12-25 21:27:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:27:42,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:27:42,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:27:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:27:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:27:42,438 INFO L87 Difference]: Start difference. First operand 4973 states and 8127 transitions. Second operand has 4 states, 4 states have (on average 760.25) internal successors, (3041), 4 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:27:42,549 INFO L93 Difference]: Finished difference Result 13730 states and 22446 transitions. [2023-12-25 21:27:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 21:27:42,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 760.25) internal successors, (3041), 4 states have internal predecessors, (3041), 0 states have call successors, (0), 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 3240 [2023-12-25 21:27:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:27:42,561 INFO L225 Difference]: With dead ends: 13730 [2023-12-25 21:27:42,561 INFO L226 Difference]: Without dead ends: 9206 [2023-12-25 21:27:42,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:27:42,566 INFO L413 NwaCegarLoop]: 7641 mSDtfsCounter, 6801 mSDsluCounter, 14770 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6801 SdHoareTripleChecker+Valid, 22411 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:27:42,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6801 Valid, 22411 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:27:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9206 states. [2023-12-25 21:27:42,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9206 to 4977. [2023-12-25 21:27:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4977 states, 4976 states have (on average 1.6340434083601285) internal successors, (8131), 4976 states have internal predecessors, (8131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 8131 transitions. [2023-12-25 21:27:42,622 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 8131 transitions. Word has length 3240 [2023-12-25 21:27:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:27:42,624 INFO L495 AbstractCegarLoop]: Abstraction has 4977 states and 8131 transitions. [2023-12-25 21:27:42,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 760.25) internal successors, (3041), 4 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 8131 transitions. [2023-12-25 21:27:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3242 [2023-12-25 21:27:42,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:27:42,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:27:42,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-12-25 21:27:42,725 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:27:42,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:27:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1747097855, now seen corresponding path program 1 times [2023-12-25 21:27:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:27:42,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013131444] [2023-12-25 21:27:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:27:42,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:27:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:27:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-25 21:27:50,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:27:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013131444] [2023-12-25 21:27:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013131444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:27:50,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:27:50,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 21:27:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572119248] [2023-12-25 21:27:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:27:50,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 21:27:50,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:27:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 21:27:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:27:50,449 INFO L87 Difference]: Start difference. First operand 4977 states and 8131 transitions. Second operand has 4 states, 4 states have (on average 760.75) internal successors, (3043), 4 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:27:50,691 INFO L93 Difference]: Finished difference Result 13367 states and 22008 transitions. [2023-12-25 21:27:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 21:27:50,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 760.75) internal successors, (3043), 4 states have internal predecessors, (3043), 0 states have call successors, (0), 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 3241 [2023-12-25 21:27:50,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:27:50,700 INFO L225 Difference]: With dead ends: 13367 [2023-12-25 21:27:50,700 INFO L226 Difference]: Without dead ends: 9086 [2023-12-25 21:27:50,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 21:27:50,703 INFO L413 NwaCegarLoop]: 13902 mSDtfsCounter, 6793 mSDsluCounter, 21028 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6793 SdHoareTripleChecker+Valid, 34930 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:27:50,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6793 Valid, 34930 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:27:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9086 states. [2023-12-25 21:27:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9086 to 4979. [2023-12-25 21:27:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4979 states, 4978 states have (on average 1.6337886701486541) internal successors, (8133), 4978 states have internal predecessors, (8133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4979 states to 4979 states and 8133 transitions. [2023-12-25 21:27:50,750 INFO L78 Accepts]: Start accepts. Automaton has 4979 states and 8133 transitions. Word has length 3241 [2023-12-25 21:27:50,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:27:50,752 INFO L495 AbstractCegarLoop]: Abstraction has 4979 states and 8133 transitions. [2023-12-25 21:27:50,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 760.75) internal successors, (3043), 4 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4979 states and 8133 transitions. [2023-12-25 21:27:50,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3243 [2023-12-25 21:27:50,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:27:50,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:27:50,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-12-25 21:27:50,805 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:27:50,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:27:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash -72203345, now seen corresponding path program 1 times [2023-12-25 21:27:50,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:27:50,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14890336] [2023-12-25 21:27:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:27:50,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:27:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:27:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-12-25 21:27:58,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:27:58,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14890336] [2023-12-25 21:27:58,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14890336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 21:27:58,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 21:27:58,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 21:27:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801805669] [2023-12-25 21:27:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 21:27:58,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 21:27:58,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 21:27:58,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 21:27:58,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 21:27:58,361 INFO L87 Difference]: Start difference. First operand 4979 states and 8133 transitions. Second operand has 5 states, 5 states have (on average 609.2) internal successors, (3046), 5 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:58,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 21:27:58,612 INFO L93 Difference]: Finished difference Result 13754 states and 22471 transitions. [2023-12-25 21:27:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 21:27:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 609.2) internal successors, (3046), 5 states have internal predecessors, (3046), 0 states have call successors, (0), 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 3242 [2023-12-25 21:27:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 21:27:58,620 INFO L225 Difference]: With dead ends: 13754 [2023-12-25 21:27:58,620 INFO L226 Difference]: Without dead ends: 9218 [2023-12-25 21:27:58,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 21:27:58,623 INFO L413 NwaCegarLoop]: 7630 mSDtfsCounter, 6796 mSDsluCounter, 22383 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6796 SdHoareTripleChecker+Valid, 30013 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 21:27:58,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6796 Valid, 30013 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 21:27:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9218 states. [2023-12-25 21:27:58,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9218 to 4987. [2023-12-25 21:27:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4987 states, 4986 states have (on average 1.633373445647814) internal successors, (8144), 4986 states have internal predecessors, (8144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4987 states to 4987 states and 8144 transitions. [2023-12-25 21:27:58,671 INFO L78 Accepts]: Start accepts. Automaton has 4987 states and 8144 transitions. Word has length 3242 [2023-12-25 21:27:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 21:27:58,673 INFO L495 AbstractCegarLoop]: Abstraction has 4987 states and 8144 transitions. [2023-12-25 21:27:58,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 609.2) internal successors, (3046), 5 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 21:27:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4987 states and 8144 transitions. [2023-12-25 21:27:58,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3244 [2023-12-25 21:27:58,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 21:27:58,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 21:27:58,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-12-25 21:27:58,726 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 21:27:58,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 21:27:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1106974697, now seen corresponding path program 1 times [2023-12-25 21:27:58,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 21:27:58,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428914365] [2023-12-25 21:27:58,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:27:58,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 21:28:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 21:28:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 139 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 21:28:06,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 21:28:06,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428914365] [2023-12-25 21:28:06,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428914365] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 21:28:06,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253082181] [2023-12-25 21:28:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 21:28:06,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 21:28:06,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 21:28:06,693 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 21:28:06,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process