/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.vis_arrays_bpbs_p2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 20:01:41,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 20:01:41,706 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 20:01:41,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 20:01:41,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 20:01:41,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 20:01:41,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 20:01:41,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 20:01:41,732 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 20:01:41,735 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 20:01:41,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 20:01:41,735 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 20:01:41,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 20:01:41,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 20:01:41,737 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 20:01:41,737 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 20:01:41,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 20:01:41,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 20:01:41,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 20:01:41,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 20:01:41,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 20:01:41,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 20:01:41,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 20:01:41,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 20:01:41,739 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 20:01:41,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 20:01:41,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 20:01:41,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 20:01:41,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 20:01:41,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:01:41,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 20:01:41,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 20:01:41,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 20:01:41,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 20:01:41,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 20:01:41,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 20:01:41,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 20:01:41,741 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 20:01:41,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 20:01:41,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 20:01:41,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 20:01:41,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 20:01:41,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 20:01:41,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 20:01:41,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 20:01:41,937 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 20:01:41,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p2.c [2023-12-16 20:01:42,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 20:01:43,238 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 20:01:43,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p2.c [2023-12-16 20:01:43,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5106bd276/bffe61663e8f4958ae72183d8531522a/FLAG9ed2813d2 [2023-12-16 20:01:43,267 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5106bd276/bffe61663e8f4958ae72183d8531522a [2023-12-16 20:01:43,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 20:01:43,270 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 20:01:43,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 20:01:43,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 20:01:43,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 20:01:43,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:43,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f832fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43, skipping insertion in model container [2023-12-16 20:01:43,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:43,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 20:01:43,503 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.vis_arrays_bpbs_p2.c[1258,1271] [2023-12-16 20:01:43,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:01:43,844 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 20:01:43,852 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.vis_arrays_bpbs_p2.c[1258,1271] [2023-12-16 20:01:43,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 20:01:43,991 INFO L206 MainTranslator]: Completed translation [2023-12-16 20:01:43,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43 WrapperNode [2023-12-16 20:01:43,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 20:01:43,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 20:01:43,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 20:01:43,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 20:01:43,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,365 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5212 [2023-12-16 20:01:44,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 20:01:44,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 20:01:44,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 20:01:44,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 20:01:44,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,649 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]. [2023-12-16 20:01:44,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 20:01:44,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 20:01:44,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 20:01:44,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 20:01:44,899 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (1/1) ... [2023-12-16 20:01:44,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 20:01:44,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:01:44,920 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) [2023-12-16 20:01:44,936 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 [2023-12-16 20:01:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 20:01:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 20:01:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 20:01:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 20:01:45,313 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 20:01:45,315 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 20:01:47,485 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 20:01:47,590 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 20:01:47,590 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 20:01:47,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:01:47 BoogieIcfgContainer [2023-12-16 20:01:47,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 20:01:47,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 20:01:47,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 20:01:47,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 20:01:47,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 08:01:43" (1/3) ... [2023-12-16 20:01:47,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f17d848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:01:47, skipping insertion in model container [2023-12-16 20:01:47,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 08:01:43" (2/3) ... [2023-12-16 20:01:47,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f17d848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 08:01:47, skipping insertion in model container [2023-12-16 20:01:47,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 08:01:47" (3/3) ... [2023-12-16 20:01:47,598 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bpbs_p2.c [2023-12-16 20:01:47,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 20:01:47,611 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 20:01:47,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 20:01:47,674 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;@25e1890, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 20:01:47,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 20:01:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 866 states, 864 states have (on average 1.6666666666666667) internal successors, (1440), 865 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-16 20:01:47,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:47,704 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] [2023-12-16 20:01:47,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:47,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:47,711 INFO L85 PathProgramCache]: Analyzing trace with hash 7079084, now seen corresponding path program 1 times [2023-12-16 20:01:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302926472] [2023-12-16 20:01:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:48,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302926472] [2023-12-16 20:01:48,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302926472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:48,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:48,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:48,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913229660] [2023-12-16 20:01:48,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:48,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:01:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:48,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:01:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:01:48,847 INFO L87 Difference]: Start difference. First operand has 866 states, 864 states have (on average 1.6666666666666667) internal successors, (1440), 865 states have internal predecessors, (1440), 0 states have call successors, (0), 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 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:48,946 INFO L93 Difference]: Finished difference Result 1626 states and 2706 transitions. [2023-12-16 20:01:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:01:48,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2023-12-16 20:01:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:48,964 INFO L225 Difference]: With dead ends: 1626 [2023-12-16 20:01:48,964 INFO L226 Difference]: Without dead ends: 866 [2023-12-16 20:01:48,970 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 [2023-12-16 20:01:48,973 INFO L413 NwaCegarLoop]: 1433 mSDtfsCounter, 1 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4294 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 [2023-12-16 20:01:48,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4294 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-12-16 20:01:49,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2023-12-16 20:01:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 1.6624277456647398) internal successors, (1438), 865 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1438 transitions. [2023-12-16 20:01:49,032 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1438 transitions. Word has length 194 [2023-12-16 20:01:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:49,033 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1438 transitions. [2023-12-16 20:01:49,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1438 transitions. [2023-12-16 20:01:49,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-16 20:01:49,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:49,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:49,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 20:01:49,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:49,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:49,036 INFO L85 PathProgramCache]: Analyzing trace with hash 221177692, now seen corresponding path program 1 times [2023-12-16 20:01:49,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:49,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264152645] [2023-12-16 20:01:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:49,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264152645] [2023-12-16 20:01:49,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264152645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:49,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:49,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:49,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740458663] [2023-12-16 20:01:49,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:49,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:01:49,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:49,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:01:49,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:01:49,517 INFO L87 Difference]: Start difference. First operand 866 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:49,560 INFO L93 Difference]: Finished difference Result 1629 states and 2704 transitions. [2023-12-16 20:01:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 20:01:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2023-12-16 20:01:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:49,565 INFO L225 Difference]: With dead ends: 1629 [2023-12-16 20:01:49,566 INFO L226 Difference]: Without dead ends: 869 [2023-12-16 20:01:49,567 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 [2023-12-16 20:01:49,568 INFO L413 NwaCegarLoop]: 1433 mSDtfsCounter, 1 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4292 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 [2023-12-16 20:01:49,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4292 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:49,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2023-12-16 20:01:49,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 868. [2023-12-16 20:01:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.6608996539792387) internal successors, (1440), 867 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1440 transitions. [2023-12-16 20:01:49,584 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1440 transitions. Word has length 195 [2023-12-16 20:01:49,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:49,585 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1440 transitions. [2023-12-16 20:01:49,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:49,585 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1440 transitions. [2023-12-16 20:01:49,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-16 20:01:49,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:49,587 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] [2023-12-16 20:01:49,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 20:01:49,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:49,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:49,594 INFO L85 PathProgramCache]: Analyzing trace with hash -168850104, now seen corresponding path program 1 times [2023-12-16 20:01:49,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:49,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081640231] [2023-12-16 20:01:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:49,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:50,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081640231] [2023-12-16 20:01:50,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081640231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:50,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:50,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:50,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189275468] [2023-12-16 20:01:50,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:50,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:50,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:50,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:50,581 INFO L87 Difference]: Start difference. First operand 868 states and 1440 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:50,684 INFO L93 Difference]: Finished difference Result 2400 states and 3980 transitions. [2023-12-16 20:01:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:01:50,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2023-12-16 20:01:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:50,689 INFO L225 Difference]: With dead ends: 2400 [2023-12-16 20:01:50,690 INFO L226 Difference]: Without dead ends: 1638 [2023-12-16 20:01:50,692 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 [2023-12-16 20:01:50,694 INFO L413 NwaCegarLoop]: 1469 mSDtfsCounter, 2520 mSDsluCounter, 4329 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 5798 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:50,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 5798 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:50,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-12-16 20:01:50,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 873. [2023-12-16 20:01:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.6594036697247707) internal successors, (1447), 872 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1447 transitions. [2023-12-16 20:01:50,710 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1447 transitions. Word has length 196 [2023-12-16 20:01:50,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:50,710 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1447 transitions. [2023-12-16 20:01:50,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1447 transitions. [2023-12-16 20:01:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-16 20:01:50,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:50,714 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] [2023-12-16 20:01:50,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 20:01:50,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:50,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:50,715 INFO L85 PathProgramCache]: Analyzing trace with hash 776603658, now seen corresponding path program 1 times [2023-12-16 20:01:50,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:50,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296317352] [2023-12-16 20:01:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:50,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:52,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:52,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296317352] [2023-12-16 20:01:52,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296317352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:52,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:52,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:01:52,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304772964] [2023-12-16 20:01:52,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:52,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:01:52,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:52,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:01:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:52,077 INFO L87 Difference]: Start difference. First operand 873 states and 1447 transitions. Second operand has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:52,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:52,420 INFO L93 Difference]: Finished difference Result 3182 states and 5270 transitions. [2023-12-16 20:01:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 20:01:52,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2023-12-16 20:01:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:52,428 INFO L225 Difference]: With dead ends: 3182 [2023-12-16 20:01:52,428 INFO L226 Difference]: Without dead ends: 2415 [2023-12-16 20:01:52,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-16 20:01:52,434 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 5093 mSDsluCounter, 5915 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 7424 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:52,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5093 Valid, 7424 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:01:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2023-12-16 20:01:52,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 878. [2023-12-16 20:01:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.6567844925883695) internal successors, (1453), 877 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1453 transitions. [2023-12-16 20:01:52,459 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1453 transitions. Word has length 197 [2023-12-16 20:01:52,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:52,459 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1453 transitions. [2023-12-16 20:01:52,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:52,460 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1453 transitions. [2023-12-16 20:01:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-16 20:01:52,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:52,461 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] [2023-12-16 20:01:52,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 20:01:52,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:52,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:52,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1655500338, now seen corresponding path program 1 times [2023-12-16 20:01:52,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:52,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301914717] [2023-12-16 20:01:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:52,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:53,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301914717] [2023-12-16 20:01:53,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301914717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:53,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:53,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762489634] [2023-12-16 20:01:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:53,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:53,210 INFO L87 Difference]: Start difference. First operand 878 states and 1453 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:53,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:53,298 INFO L93 Difference]: Finished difference Result 2430 states and 4019 transitions. [2023-12-16 20:01:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:01:53,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2023-12-16 20:01:53,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:53,304 INFO L225 Difference]: With dead ends: 2430 [2023-12-16 20:01:53,304 INFO L226 Difference]: Without dead ends: 1658 [2023-12-16 20:01:53,305 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 [2023-12-16 20:01:53,305 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 2520 mSDsluCounter, 4444 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 6028 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:53,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 6028 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-12-16 20:01:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 883. [2023-12-16 20:01:53,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.655328798185941) internal successors, (1460), 882 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1460 transitions. [2023-12-16 20:01:53,320 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1460 transitions. Word has length 198 [2023-12-16 20:01:53,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:53,320 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1460 transitions. [2023-12-16 20:01:53,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1460 transitions. [2023-12-16 20:01:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-16 20:01:53,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:53,321 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] [2023-12-16 20:01:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 20:01:53,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:53,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:53,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2063122778, now seen corresponding path program 1 times [2023-12-16 20:01:53,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:53,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397989191] [2023-12-16 20:01:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:54,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:54,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397989191] [2023-12-16 20:01:54,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397989191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:54,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:54,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 20:01:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675572702] [2023-12-16 20:01:54,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:54,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 20:01:54,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 20:01:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 20:01:54,455 INFO L87 Difference]: Start difference. First operand 883 states and 1460 transitions. Second operand has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:55,058 INFO L93 Difference]: Finished difference Result 4831 states and 7977 transitions. [2023-12-16 20:01:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 20:01:55,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2023-12-16 20:01:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:55,071 INFO L225 Difference]: With dead ends: 4831 [2023-12-16 20:01:55,071 INFO L226 Difference]: Without dead ends: 4054 [2023-12-16 20:01:55,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-12-16 20:01:55,074 INFO L413 NwaCegarLoop]: 2710 mSDtfsCounter, 11354 mSDsluCounter, 14879 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11354 SdHoareTripleChecker+Valid, 17589 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:55,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11354 Valid, 17589 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:55,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2023-12-16 20:01:55,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 905. [2023-12-16 20:01:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 904 states have (on average 1.6537610619469028) internal successors, (1495), 904 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1495 transitions. [2023-12-16 20:01:55,099 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1495 transitions. Word has length 199 [2023-12-16 20:01:55,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:55,099 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1495 transitions. [2023-12-16 20:01:55,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1495 transitions. [2023-12-16 20:01:55,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-16 20:01:55,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:55,101 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] [2023-12-16 20:01:55,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 20:01:55,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:55,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash -68227944, now seen corresponding path program 1 times [2023-12-16 20:01:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:55,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429406534] [2023-12-16 20:01:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:55,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:55,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:55,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429406534] [2023-12-16 20:01:55,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429406534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:55,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:55,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:01:55,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982251797] [2023-12-16 20:01:55,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:55,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:55,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:55,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:55,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:55,743 INFO L87 Difference]: Start difference. First operand 905 states and 1495 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:55,891 INFO L93 Difference]: Finished difference Result 2507 states and 4137 transitions. [2023-12-16 20:01:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:01:55,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2023-12-16 20:01:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:55,896 INFO L225 Difference]: With dead ends: 2507 [2023-12-16 20:01:55,896 INFO L226 Difference]: Without dead ends: 1708 [2023-12-16 20:01:55,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:01:55,898 INFO L413 NwaCegarLoop]: 1439 mSDtfsCounter, 3825 mSDsluCounter, 2832 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 4271 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:55,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3825 Valid, 4271 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2023-12-16 20:01:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 910. [2023-12-16 20:01:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 1.6512651265126512) internal successors, (1501), 909 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1501 transitions. [2023-12-16 20:01:55,913 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1501 transitions. Word has length 199 [2023-12-16 20:01:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:55,913 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1501 transitions. [2023-12-16 20:01:55,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1501 transitions. [2023-12-16 20:01:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-16 20:01:55,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:55,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:55,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 20:01:55,915 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:55,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:55,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1864802716, now seen corresponding path program 1 times [2023-12-16 20:01:55,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:55,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247278966] [2023-12-16 20:01:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:55,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:56,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:56,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247278966] [2023-12-16 20:01:56,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247278966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:56,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:56,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:56,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766299297] [2023-12-16 20:01:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:56,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:56,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:56,209 INFO L87 Difference]: Start difference. First operand 910 states and 1501 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:56,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:56,277 INFO L93 Difference]: Finished difference Result 2518 states and 4150 transitions. [2023-12-16 20:01:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:01:56,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2023-12-16 20:01:56,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:56,282 INFO L225 Difference]: With dead ends: 2518 [2023-12-16 20:01:56,282 INFO L226 Difference]: Without dead ends: 1714 [2023-12-16 20:01:56,283 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 [2023-12-16 20:01:56,284 INFO L413 NwaCegarLoop]: 1461 mSDtfsCounter, 2514 mSDsluCounter, 4321 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 5782 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:56,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 5782 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2023-12-16 20:01:56,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 915. [2023-12-16 20:01:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 914 states have (on average 1.649890590809628) internal successors, (1508), 914 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1508 transitions. [2023-12-16 20:01:56,300 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1508 transitions. Word has length 199 [2023-12-16 20:01:56,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:56,301 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 1508 transitions. [2023-12-16 20:01:56,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1508 transitions. [2023-12-16 20:01:56,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-16 20:01:56,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:56,302 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] [2023-12-16 20:01:56,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 20:01:56,302 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:56,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:56,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2030204968, now seen corresponding path program 1 times [2023-12-16 20:01:56,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:56,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224124919] [2023-12-16 20:01:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:56,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:56,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:56,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224124919] [2023-12-16 20:01:56,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224124919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:56,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:56,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:01:56,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101389238] [2023-12-16 20:01:56,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:56,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:01:56,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:56,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:01:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:01:56,893 INFO L87 Difference]: Start difference. First operand 915 states and 1508 transitions. Second operand has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:57,272 INFO L93 Difference]: Finished difference Result 5015 states and 8249 transitions. [2023-12-16 20:01:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 20:01:57,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-12-16 20:01:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:57,285 INFO L225 Difference]: With dead ends: 5015 [2023-12-16 20:01:57,285 INFO L226 Difference]: Without dead ends: 4206 [2023-12-16 20:01:57,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-16 20:01:57,290 INFO L413 NwaCegarLoop]: 2760 mSDtfsCounter, 7597 mSDsluCounter, 12822 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7597 SdHoareTripleChecker+Valid, 15582 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:57,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7597 Valid, 15582 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:01:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2023-12-16 20:01:57,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 943. [2023-12-16 20:01:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 942 states have (on average 1.6464968152866242) internal successors, (1551), 942 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1551 transitions. [2023-12-16 20:01:57,328 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1551 transitions. Word has length 200 [2023-12-16 20:01:57,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:57,330 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1551 transitions. [2023-12-16 20:01:57,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:57,331 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1551 transitions. [2023-12-16 20:01:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-16 20:01:57,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:57,332 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] [2023-12-16 20:01:57,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 20:01:57,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:57,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1679476796, now seen corresponding path program 1 times [2023-12-16 20:01:57,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:57,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692271351] [2023-12-16 20:01:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:57,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:58,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:58,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692271351] [2023-12-16 20:01:58,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692271351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:58,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:58,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:58,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184257566] [2023-12-16 20:01:58,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:58,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:58,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:58,006 INFO L87 Difference]: Start difference. First operand 943 states and 1551 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:58,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:58,096 INFO L93 Difference]: Finished difference Result 2621 states and 4309 transitions. [2023-12-16 20:01:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:01:58,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-12-16 20:01:58,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:58,102 INFO L225 Difference]: With dead ends: 2621 [2023-12-16 20:01:58,102 INFO L226 Difference]: Without dead ends: 1784 [2023-12-16 20:01:58,103 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 [2023-12-16 20:01:58,103 INFO L413 NwaCegarLoop]: 2680 mSDtfsCounter, 2519 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2519 SdHoareTripleChecker+Valid, 8220 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:58,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2519 Valid, 8220 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2023-12-16 20:01:58,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 949. [2023-12-16 20:01:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 948 states have (on average 1.6445147679324894) internal successors, (1559), 948 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1559 transitions. [2023-12-16 20:01:58,123 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1559 transitions. Word has length 200 [2023-12-16 20:01:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:58,124 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1559 transitions. [2023-12-16 20:01:58,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1559 transitions. [2023-12-16 20:01:58,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-16 20:01:58,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:58,126 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] [2023-12-16 20:01:58,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 20:01:58,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:58,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:58,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2127814436, now seen corresponding path program 1 times [2023-12-16 20:01:58,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:58,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990994170] [2023-12-16 20:01:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:58,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:58,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:58,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990994170] [2023-12-16 20:01:58,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990994170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:58,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:58,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:58,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626933078] [2023-12-16 20:01:58,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:58,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:58,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:58,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:58,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:58,476 INFO L87 Difference]: Start difference. First operand 949 states and 1559 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:58,549 INFO L93 Difference]: Finished difference Result 2639 states and 4329 transitions. [2023-12-16 20:01:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:01:58,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-12-16 20:01:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:58,554 INFO L225 Difference]: With dead ends: 2639 [2023-12-16 20:01:58,554 INFO L226 Difference]: Without dead ends: 1796 [2023-12-16 20:01:58,556 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 [2023-12-16 20:01:58,556 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 2514 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 5932 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:58,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 5932 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-12-16 20:01:58,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 959. [2023-12-16 20:01:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.6419624217118998) internal successors, (1573), 958 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1573 transitions. [2023-12-16 20:01:58,575 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1573 transitions. Word has length 200 [2023-12-16 20:01:58,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:58,575 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1573 transitions. [2023-12-16 20:01:58,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1573 transitions. [2023-12-16 20:01:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-16 20:01:58,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:58,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:01:58,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 20:01:58,577 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:58,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 411230054, now seen corresponding path program 1 times [2023-12-16 20:01:58,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:58,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985704723] [2023-12-16 20:01:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:58,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:01:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:01:59,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:01:59,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985704723] [2023-12-16 20:01:59,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985704723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:01:59,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:01:59,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:01:59,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123048424] [2023-12-16 20:01:59,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:01:59,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:01:59,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:01:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:01:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:01:59,309 INFO L87 Difference]: Start difference. First operand 959 states and 1573 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:01:59,386 INFO L93 Difference]: Finished difference Result 2669 states and 4373 transitions. [2023-12-16 20:01:59,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:01:59,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-12-16 20:01:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:01:59,391 INFO L225 Difference]: With dead ends: 2669 [2023-12-16 20:01:59,392 INFO L226 Difference]: Without dead ends: 1816 [2023-12-16 20:01:59,393 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 [2023-12-16 20:01:59,393 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 2520 mSDsluCounter, 4364 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 5868 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:01:59,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 5868 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:01:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2023-12-16 20:01:59,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 964. [2023-12-16 20:01:59,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 1.6396677050882658) internal successors, (1579), 963 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1579 transitions. [2023-12-16 20:01:59,412 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1579 transitions. Word has length 200 [2023-12-16 20:01:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:01:59,413 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1579 transitions. [2023-12-16 20:01:59,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:01:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1579 transitions. [2023-12-16 20:01:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-16 20:01:59,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:01:59,414 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] [2023-12-16 20:01:59,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 20:01:59,415 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:01:59,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:01:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1062014220, now seen corresponding path program 1 times [2023-12-16 20:01:59,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:01:59,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962945641] [2023-12-16 20:01:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:01:59,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:01:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:00,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:00,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962945641] [2023-12-16 20:02:00,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962945641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:00,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:00,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:02:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313444870] [2023-12-16 20:02:00,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:00,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:02:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:00,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:02:00,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:02:00,453 INFO L87 Difference]: Start difference. First operand 964 states and 1579 transitions. Second operand has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:00,814 INFO L93 Difference]: Finished difference Result 4366 states and 7143 transitions. [2023-12-16 20:02:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 20:02:00,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-12-16 20:02:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:00,832 INFO L225 Difference]: With dead ends: 4366 [2023-12-16 20:02:00,832 INFO L226 Difference]: Without dead ends: 3508 [2023-12-16 20:02:00,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 20:02:00,835 INFO L413 NwaCegarLoop]: 2621 mSDtfsCounter, 6357 mSDsluCounter, 9080 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6357 SdHoareTripleChecker+Valid, 11701 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:00,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6357 Valid, 11701 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:02:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2023-12-16 20:02:00,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 970. [2023-12-16 20:02:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.6357069143446852) internal successors, (1585), 969 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1585 transitions. [2023-12-16 20:02:00,863 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1585 transitions. Word has length 200 [2023-12-16 20:02:00,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:00,863 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1585 transitions. [2023-12-16 20:02:00,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1585 transitions. [2023-12-16 20:02:00,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-16 20:02:00,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:00,865 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] [2023-12-16 20:02:00,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 20:02:00,865 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:00,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:00,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1606954214, now seen corresponding path program 1 times [2023-12-16 20:02:00,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:00,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451735392] [2023-12-16 20:02:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:00,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:01,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:01,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451735392] [2023-12-16 20:02:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451735392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:01,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:01,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:02:01,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548282749] [2023-12-16 20:02:01,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:01,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:02:01,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:01,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:02:01,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:02:01,455 INFO L87 Difference]: Start difference. First operand 970 states and 1585 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:01,604 INFO L93 Difference]: Finished difference Result 2696 states and 4397 transitions. [2023-12-16 20:02:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:02:01,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-12-16 20:02:01,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:01,608 INFO L225 Difference]: With dead ends: 2696 [2023-12-16 20:02:01,608 INFO L226 Difference]: Without dead ends: 1832 [2023-12-16 20:02:01,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:02:01,610 INFO L413 NwaCegarLoop]: 1465 mSDtfsCounter, 3784 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 4323 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:01,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3784 Valid, 4323 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:02:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2023-12-16 20:02:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 974. [2023-12-16 20:02:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 1.6330935251798562) internal successors, (1589), 973 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1589 transitions. [2023-12-16 20:02:01,630 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1589 transitions. Word has length 200 [2023-12-16 20:02:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:01,630 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1589 transitions. [2023-12-16 20:02:01,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1589 transitions. [2023-12-16 20:02:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-16 20:02:01,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:01,631 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] [2023-12-16 20:02:01,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 20:02:01,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:01,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2135532018, now seen corresponding path program 1 times [2023-12-16 20:02:01,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:01,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965882709] [2023-12-16 20:02:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:01,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965882709] [2023-12-16 20:02:02,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965882709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:02,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:02,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 20:02:02,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804720491] [2023-12-16 20:02:02,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:02,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:02:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:02:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:02:02,735 INFO L87 Difference]: Start difference. First operand 974 states and 1589 transitions. Second operand has 8 states, 8 states have (on average 25.125) internal successors, (201), 7 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:02,997 INFO L93 Difference]: Finished difference Result 3689 states and 6011 transitions. [2023-12-16 20:02:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 20:02:02,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 7 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2023-12-16 20:02:02,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:03,002 INFO L225 Difference]: With dead ends: 3689 [2023-12-16 20:02:03,002 INFO L226 Difference]: Without dead ends: 2821 [2023-12-16 20:02:03,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:02:03,004 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 9479 mSDsluCounter, 8155 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9479 SdHoareTripleChecker+Valid, 9844 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:03,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9479 Valid, 9844 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:02:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2023-12-16 20:02:03,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 1356. [2023-12-16 20:02:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 1.6199261992619927) internal successors, (2195), 1355 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2195 transitions. [2023-12-16 20:02:03,033 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2195 transitions. Word has length 201 [2023-12-16 20:02:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:03,034 INFO L495 AbstractCegarLoop]: Abstraction has 1356 states and 2195 transitions. [2023-12-16 20:02:03,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 7 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2195 transitions. [2023-12-16 20:02:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-16 20:02:03,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:03,036 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] [2023-12-16 20:02:03,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 20:02:03,036 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:03,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:03,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1666277722, now seen corresponding path program 1 times [2023-12-16 20:02:03,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:03,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322233816] [2023-12-16 20:02:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:03,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:04,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:04,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322233816] [2023-12-16 20:02:04,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322233816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:04,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:04,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 20:02:04,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043891794] [2023-12-16 20:02:04,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:04,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 20:02:04,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 20:02:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-16 20:02:04,053 INFO L87 Difference]: Start difference. First operand 1356 states and 2195 transitions. Second operand has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:05,208 INFO L93 Difference]: Finished difference Result 9028 states and 14705 transitions. [2023-12-16 20:02:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-16 20:02:05,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-16 20:02:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:05,222 INFO L225 Difference]: With dead ends: 9028 [2023-12-16 20:02:05,222 INFO L226 Difference]: Without dead ends: 8020 [2023-12-16 20:02:05,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=529, Invalid=1921, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 20:02:05,232 INFO L413 NwaCegarLoop]: 2694 mSDtfsCounter, 17735 mSDsluCounter, 25109 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17735 SdHoareTripleChecker+Valid, 27803 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:05,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17735 Valid, 27803 Invalid, 311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 20:02:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8020 states. [2023-12-16 20:02:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8020 to 1416. [2023-12-16 20:02:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 1.6120141342756185) internal successors, (2281), 1415 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2281 transitions. [2023-12-16 20:02:05,291 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2281 transitions. Word has length 202 [2023-12-16 20:02:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:05,291 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 2281 transitions. [2023-12-16 20:02:05,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.833333333333332) internal successors, (202), 12 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2281 transitions. [2023-12-16 20:02:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-16 20:02:05,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:05,294 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] [2023-12-16 20:02:05,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 20:02:05,294 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:05,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash -650482856, now seen corresponding path program 1 times [2023-12-16 20:02:05,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:05,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538334422] [2023-12-16 20:02:05,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:05,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:05,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:05,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538334422] [2023-12-16 20:02:05,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538334422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:05,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:05,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:02:05,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63428388] [2023-12-16 20:02:05,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:05,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:02:05,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:05,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:02:05,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:02:05,827 INFO L87 Difference]: Start difference. First operand 1416 states and 2281 transitions. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:05,898 INFO L93 Difference]: Finished difference Result 3866 states and 6229 transitions. [2023-12-16 20:02:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:02:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-16 20:02:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:05,902 INFO L225 Difference]: With dead ends: 3866 [2023-12-16 20:02:05,903 INFO L226 Difference]: Without dead ends: 2769 [2023-12-16 20:02:05,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:02:05,904 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 1312 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 5703 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:05,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 5703 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:02:05,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2023-12-16 20:02:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1788. [2023-12-16 20:02:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1787 states have (on average 1.6054840514829323) internal successors, (2869), 1787 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2869 transitions. [2023-12-16 20:02:05,945 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2869 transitions. Word has length 202 [2023-12-16 20:02:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:05,946 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2869 transitions. [2023-12-16 20:02:05,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2869 transitions. [2023-12-16 20:02:05,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-16 20:02:05,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:05,959 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] [2023-12-16 20:02:05,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 20:02:05,959 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:05,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:05,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1485141528, now seen corresponding path program 1 times [2023-12-16 20:02:05,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:05,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688588378] [2023-12-16 20:02:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:06,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:06,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688588378] [2023-12-16 20:02:06,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688588378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:06,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:06,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:02:06,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714672524] [2023-12-16 20:02:06,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:06,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 20:02:06,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:06,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 20:02:06,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:02:06,296 INFO L87 Difference]: Start difference. First operand 1788 states and 2869 transitions. Second operand has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:06,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:06,372 INFO L93 Difference]: Finished difference Result 4086 states and 6544 transitions. [2023-12-16 20:02:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:02:06,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-16 20:02:06,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:06,376 INFO L225 Difference]: With dead ends: 4086 [2023-12-16 20:02:06,377 INFO L226 Difference]: Without dead ends: 2996 [2023-12-16 20:02:06,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:02:06,379 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 2513 mSDsluCounter, 5609 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 7105 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:06,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 7105 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:02:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2023-12-16 20:02:06,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 1824. [2023-12-16 20:02:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1823 states have (on average 1.6066922654964344) internal successors, (2929), 1823 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2929 transitions. [2023-12-16 20:02:06,411 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2929 transitions. Word has length 202 [2023-12-16 20:02:06,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:06,411 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 2929 transitions. [2023-12-16 20:02:06,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2929 transitions. [2023-12-16 20:02:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-16 20:02:06,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:06,414 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] [2023-12-16 20:02:06,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 20:02:06,414 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:06,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:06,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1524506412, now seen corresponding path program 1 times [2023-12-16 20:02:06,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:06,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733253641] [2023-12-16 20:02:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:06,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:06,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:06,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733253641] [2023-12-16 20:02:06,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733253641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:06,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:06,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:02:06,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947828435] [2023-12-16 20:02:06,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:06,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 20:02:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 20:02:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:02:06,964 INFO L87 Difference]: Start difference. First operand 1824 states and 2929 transitions. Second operand has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:07,712 INFO L93 Difference]: Finished difference Result 4052 states and 6505 transitions. [2023-12-16 20:02:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:02:07,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-16 20:02:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:07,717 INFO L225 Difference]: With dead ends: 4052 [2023-12-16 20:02:07,717 INFO L226 Difference]: Without dead ends: 2805 [2023-12-16 20:02:07,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:02:07,719 INFO L413 NwaCegarLoop]: 1166 mSDtfsCounter, 4070 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4070 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:07,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4070 Valid, 4657 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 20:02:07,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2023-12-16 20:02:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 1824. [2023-12-16 20:02:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1823 states have (on average 1.6044980800877675) internal successors, (2925), 1823 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2925 transitions. [2023-12-16 20:02:07,746 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2925 transitions. Word has length 202 [2023-12-16 20:02:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:07,746 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 2925 transitions. [2023-12-16 20:02:07,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2925 transitions. [2023-12-16 20:02:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-16 20:02:07,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:07,749 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] [2023-12-16 20:02:07,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 20:02:07,749 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:07,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:07,749 INFO L85 PathProgramCache]: Analyzing trace with hash 404425814, now seen corresponding path program 1 times [2023-12-16 20:02:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:07,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019379360] [2023-12-16 20:02:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:07,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:08,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:08,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019379360] [2023-12-16 20:02:08,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019379360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:08,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:08,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:02:08,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338413662] [2023-12-16 20:02:08,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:08,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:02:08,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:08,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:02:08,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:02:08,292 INFO L87 Difference]: Start difference. First operand 1824 states and 2925 transitions. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:08,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:08,372 INFO L93 Difference]: Finished difference Result 4040 states and 6483 transitions. [2023-12-16 20:02:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:02:08,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-16 20:02:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:08,377 INFO L225 Difference]: With dead ends: 4040 [2023-12-16 20:02:08,377 INFO L226 Difference]: Without dead ends: 2789 [2023-12-16 20:02:08,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:02:08,379 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 1323 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 5707 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:08,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 5707 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:02:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2023-12-16 20:02:08,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 1808. [2023-12-16 20:02:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 1807 states have (on average 1.60431654676259) internal successors, (2899), 1807 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2899 transitions. [2023-12-16 20:02:08,416 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2899 transitions. Word has length 202 [2023-12-16 20:02:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:08,416 INFO L495 AbstractCegarLoop]: Abstraction has 1808 states and 2899 transitions. [2023-12-16 20:02:08,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2899 transitions. [2023-12-16 20:02:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-16 20:02:08,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:08,418 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] [2023-12-16 20:02:08,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 20:02:08,418 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:08,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:08,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1289199634, now seen corresponding path program 1 times [2023-12-16 20:02:08,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:08,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112153098] [2023-12-16 20:02:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:08,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:08,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:08,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112153098] [2023-12-16 20:02:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112153098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:08,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:08,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:02:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64377352] [2023-12-16 20:02:08,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:08,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:02:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:08,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:02:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:02:08,653 INFO L87 Difference]: Start difference. First operand 1808 states and 2899 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:08,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:08,704 INFO L93 Difference]: Finished difference Result 4375 states and 6987 transitions. [2023-12-16 20:02:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:02:08,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-16 20:02:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:08,708 INFO L225 Difference]: With dead ends: 4375 [2023-12-16 20:02:08,708 INFO L226 Difference]: Without dead ends: 3003 [2023-12-16 20:02:08,709 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 [2023-12-16 20:02:08,710 INFO L413 NwaCegarLoop]: 1453 mSDtfsCounter, 1252 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 4330 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 [2023-12-16 20:02:08,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 4330 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:02:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2023-12-16 20:02:08,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1816. [2023-12-16 20:02:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1815 states have (on average 1.6016528925619835) internal successors, (2907), 1815 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2907 transitions. [2023-12-16 20:02:08,735 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2907 transitions. Word has length 202 [2023-12-16 20:02:08,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:08,735 INFO L495 AbstractCegarLoop]: Abstraction has 1816 states and 2907 transitions. [2023-12-16 20:02:08,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:08,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2907 transitions. [2023-12-16 20:02:08,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:08,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:08,738 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] [2023-12-16 20:02:08,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 20:02:08,738 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:08,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash -191686558, now seen corresponding path program 1 times [2023-12-16 20:02:08,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:08,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620259] [2023-12-16 20:02:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:09,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:09,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620259] [2023-12-16 20:02:09,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:09,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:09,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:02:09,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007243478] [2023-12-16 20:02:09,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:09,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:02:09,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:09,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:02:09,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:02:09,230 INFO L87 Difference]: Start difference. First operand 1816 states and 2907 transitions. Second operand has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:09,571 INFO L93 Difference]: Finished difference Result 6851 states and 11065 transitions. [2023-12-16 20:02:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 20:02:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:09,581 INFO L225 Difference]: With dead ends: 6851 [2023-12-16 20:02:09,582 INFO L226 Difference]: Without dead ends: 5868 [2023-12-16 20:02:09,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-16 20:02:09,586 INFO L413 NwaCegarLoop]: 2866 mSDtfsCounter, 7498 mSDsluCounter, 11992 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7498 SdHoareTripleChecker+Valid, 14858 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:09,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7498 Valid, 14858 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:02:09,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2023-12-16 20:02:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 1872. [2023-12-16 20:02:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.6007482629609835) internal successors, (2995), 1871 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2995 transitions. [2023-12-16 20:02:09,626 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2995 transitions. Word has length 203 [2023-12-16 20:02:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:09,626 INFO L495 AbstractCegarLoop]: Abstraction has 1872 states and 2995 transitions. [2023-12-16 20:02:09,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:09,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2995 transitions. [2023-12-16 20:02:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:09,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:09,628 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] [2023-12-16 20:02:09,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 20:02:09,629 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:09,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash -609083164, now seen corresponding path program 1 times [2023-12-16 20:02:09,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:09,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42234864] [2023-12-16 20:02:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:09,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:10,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:10,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42234864] [2023-12-16 20:02:10,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42234864] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:10,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:10,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:02:10,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131670566] [2023-12-16 20:02:10,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:10,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:02:10,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:10,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:02:10,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:02:10,271 INFO L87 Difference]: Start difference. First operand 1872 states and 2995 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:10,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:10,423 INFO L93 Difference]: Finished difference Result 3920 states and 6305 transitions. [2023-12-16 20:02:10,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:02:10,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:10,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:10,428 INFO L225 Difference]: With dead ends: 3920 [2023-12-16 20:02:10,428 INFO L226 Difference]: Without dead ends: 2906 [2023-12-16 20:02:10,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:02:10,430 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 3659 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3659 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:10,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3659 Valid, 4489 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:02:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2023-12-16 20:02:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1892. [2023-12-16 20:02:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 1.596509783183501) internal successors, (3019), 1891 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) [2023-12-16 20:02:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 3019 transitions. [2023-12-16 20:02:10,457 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 3019 transitions. Word has length 203 [2023-12-16 20:02:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:10,458 INFO L495 AbstractCegarLoop]: Abstraction has 1892 states and 3019 transitions. [2023-12-16 20:02:10,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 3019 transitions. [2023-12-16 20:02:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:10,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:10,460 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] [2023-12-16 20:02:10,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 20:02:10,460 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:10,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1972590314, now seen corresponding path program 1 times [2023-12-16 20:02:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:10,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702748871] [2023-12-16 20:02:10,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:10,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:10,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702748871] [2023-12-16 20:02:10,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702748871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:10,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:10,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:02:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017928152] [2023-12-16 20:02:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:02:10,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:02:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:02:10,695 INFO L87 Difference]: Start difference. First operand 1892 states and 3019 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:10,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:10,759 INFO L93 Difference]: Finished difference Result 3992 states and 6403 transitions. [2023-12-16 20:02:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:02:10,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:10,764 INFO L225 Difference]: With dead ends: 3992 [2023-12-16 20:02:10,764 INFO L226 Difference]: Without dead ends: 2946 [2023-12-16 20:02:10,765 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 [2023-12-16 20:02:10,766 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 2514 mSDsluCounter, 4436 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 6012 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:10,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 6012 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:02:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2023-12-16 20:02:10,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1912. [2023-12-16 20:02:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 1.5944531658817374) internal successors, (3047), 1911 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 3047 transitions. [2023-12-16 20:02:10,797 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 3047 transitions. Word has length 203 [2023-12-16 20:02:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:10,798 INFO L495 AbstractCegarLoop]: Abstraction has 1912 states and 3047 transitions. [2023-12-16 20:02:10,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 3047 transitions. [2023-12-16 20:02:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:10,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:10,800 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] [2023-12-16 20:02:10,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 20:02:10,800 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:10,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:10,801 INFO L85 PathProgramCache]: Analyzing trace with hash 647347104, now seen corresponding path program 1 times [2023-12-16 20:02:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546844830] [2023-12-16 20:02:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:10,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546844830] [2023-12-16 20:02:11,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546844830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:11,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:11,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-16 20:02:11,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906613883] [2023-12-16 20:02:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:11,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 20:02:11,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 20:02:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-16 20:02:11,746 INFO L87 Difference]: Start difference. First operand 1912 states and 3047 transitions. Second operand has 15 states, 15 states have (on average 13.533333333333333) internal successors, (203), 15 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:14,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:14,037 INFO L93 Difference]: Finished difference Result 12362 states and 19920 transitions. [2023-12-16 20:02:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-16 20:02:14,045 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.533333333333333) internal successors, (203), 15 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:14,059 INFO L225 Difference]: With dead ends: 12362 [2023-12-16 20:02:14,059 INFO L226 Difference]: Without dead ends: 11292 [2023-12-16 20:02:14,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1581, Invalid=6429, Unknown=0, NotChecked=0, Total=8010 [2023-12-16 20:02:14,063 INFO L413 NwaCegarLoop]: 2716 mSDtfsCounter, 27129 mSDsluCounter, 38717 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27129 SdHoareTripleChecker+Valid, 41433 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:14,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27129 Valid, 41433 Invalid, 596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 20:02:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2023-12-16 20:02:14,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 2000. [2023-12-16 20:02:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 1.590295147573787) internal successors, (3179), 1999 states have internal predecessors, (3179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 3179 transitions. [2023-12-16 20:02:14,126 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 3179 transitions. Word has length 203 [2023-12-16 20:02:14,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:14,126 INFO L495 AbstractCegarLoop]: Abstraction has 2000 states and 3179 transitions. [2023-12-16 20:02:14,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.533333333333333) internal successors, (203), 15 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:14,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 3179 transitions. [2023-12-16 20:02:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:14,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:14,129 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] [2023-12-16 20:02:14,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 20:02:14,129 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:14,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:14,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1308442082, now seen corresponding path program 1 times [2023-12-16 20:02:14,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:14,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363758018] [2023-12-16 20:02:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:14,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363758018] [2023-12-16 20:02:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363758018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:14,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:02:14,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598301257] [2023-12-16 20:02:14,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:14,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:02:14,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:14,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:02:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:02:14,621 INFO L87 Difference]: Start difference. First operand 2000 states and 3179 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:14,684 INFO L93 Difference]: Finished difference Result 4302 states and 6858 transitions. [2023-12-16 20:02:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:02:14,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:14,688 INFO L225 Difference]: With dead ends: 4302 [2023-12-16 20:02:14,689 INFO L226 Difference]: Without dead ends: 3127 [2023-12-16 20:02:14,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:02:14,690 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 1287 mSDsluCounter, 4277 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 5706 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:14,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 5706 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:02:14,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2023-12-16 20:02:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 2190. [2023-12-16 20:02:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 2189 states have (on average 1.578346276838739) internal successors, (3455), 2189 states have internal predecessors, (3455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 3455 transitions. [2023-12-16 20:02:14,720 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 3455 transitions. Word has length 203 [2023-12-16 20:02:14,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:14,720 INFO L495 AbstractCegarLoop]: Abstraction has 2190 states and 3455 transitions. [2023-12-16 20:02:14,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:14,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 3455 transitions. [2023-12-16 20:02:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:14,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:14,723 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] [2023-12-16 20:02:14,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 20:02:14,723 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:14,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:14,723 INFO L85 PathProgramCache]: Analyzing trace with hash 209728700, now seen corresponding path program 1 times [2023-12-16 20:02:14,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:14,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483992805] [2023-12-16 20:02:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:14,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:14,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:14,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:14,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483992805] [2023-12-16 20:02:14,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483992805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:14,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:14,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:02:14,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420738225] [2023-12-16 20:02:14,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:14,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 20:02:14,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:14,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 20:02:14,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 20:02:14,951 INFO L87 Difference]: Start difference. First operand 2190 states and 3455 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:14,996 INFO L93 Difference]: Finished difference Result 4699 states and 7429 transitions. [2023-12-16 20:02:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:02:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:15,001 INFO L225 Difference]: With dead ends: 4699 [2023-12-16 20:02:15,002 INFO L226 Difference]: Without dead ends: 3425 [2023-12-16 20:02:15,003 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 [2023-12-16 20:02:15,004 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 1252 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 4480 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 [2023-12-16 20:02:15,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 4480 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:02:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3425 states. [2023-12-16 20:02:15,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3425 to 2214. [2023-12-16 20:02:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 2213 states have (on average 1.5720741075463172) internal successors, (3479), 2213 states have internal predecessors, (3479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3479 transitions. [2023-12-16 20:02:15,037 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3479 transitions. Word has length 203 [2023-12-16 20:02:15,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:15,037 INFO L495 AbstractCegarLoop]: Abstraction has 2214 states and 3479 transitions. [2023-12-16 20:02:15,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3479 transitions. [2023-12-16 20:02:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:15,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:15,040 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] [2023-12-16 20:02:15,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-16 20:02:15,041 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:15,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1063266036, now seen corresponding path program 1 times [2023-12-16 20:02:15,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:15,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326714456] [2023-12-16 20:02:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:15,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:15,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326714456] [2023-12-16 20:02:15,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326714456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:15,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:15,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:02:15,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987214979] [2023-12-16 20:02:15,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:15,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:02:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:02:15,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:02:15,302 INFO L87 Difference]: Start difference. First operand 2214 states and 3479 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:15,382 INFO L93 Difference]: Finished difference Result 5365 states and 8363 transitions. [2023-12-16 20:02:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:02:15,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:15,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:15,387 INFO L225 Difference]: With dead ends: 5365 [2023-12-16 20:02:15,387 INFO L226 Difference]: Without dead ends: 3751 [2023-12-16 20:02:15,388 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 [2023-12-16 20:02:15,388 INFO L413 NwaCegarLoop]: 1488 mSDtfsCounter, 1252 mSDsluCounter, 4163 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 5651 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:15,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 5651 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:02:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2023-12-16 20:02:15,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 2238. [2023-12-16 20:02:15,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2237 states have (on average 1.5659365221278498) internal successors, (3503), 2237 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 3503 transitions. [2023-12-16 20:02:15,418 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 3503 transitions. Word has length 203 [2023-12-16 20:02:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:15,419 INFO L495 AbstractCegarLoop]: Abstraction has 2238 states and 3503 transitions. [2023-12-16 20:02:15,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 3503 transitions. [2023-12-16 20:02:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:15,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:15,421 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] [2023-12-16 20:02:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 20:02:15,422 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:15,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash -799973138, now seen corresponding path program 1 times [2023-12-16 20:02:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:15,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483711109] [2023-12-16 20:02:15,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:15,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:15,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:15,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483711109] [2023-12-16 20:02:15,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483711109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:15,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:15,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:02:15,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610477012] [2023-12-16 20:02:15,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:15,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:02:15,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:15,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:02:15,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:02:15,685 INFO L87 Difference]: Start difference. First operand 2238 states and 3503 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:15,745 INFO L93 Difference]: Finished difference Result 5588 states and 8700 transitions. [2023-12-16 20:02:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 20:02:15,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:15,762 INFO L225 Difference]: With dead ends: 5588 [2023-12-16 20:02:15,762 INFO L226 Difference]: Without dead ends: 3768 [2023-12-16 20:02:15,765 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 [2023-12-16 20:02:15,766 INFO L413 NwaCegarLoop]: 1448 mSDtfsCounter, 1249 mSDsluCounter, 4317 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 5765 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:15,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 5765 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 20:02:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2023-12-16 20:02:15,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 2246. [2023-12-16 20:02:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 2245 states have (on average 1.5639198218262806) internal successors, (3511), 2245 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 3511 transitions. [2023-12-16 20:02:15,800 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 3511 transitions. Word has length 203 [2023-12-16 20:02:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:15,800 INFO L495 AbstractCegarLoop]: Abstraction has 2246 states and 3511 transitions. [2023-12-16 20:02:15,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 3511 transitions. [2023-12-16 20:02:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:15,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:15,803 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] [2023-12-16 20:02:15,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-16 20:02:15,803 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:15,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash -877749628, now seen corresponding path program 1 times [2023-12-16 20:02:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:15,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813056446] [2023-12-16 20:02:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:16,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:16,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813056446] [2023-12-16 20:02:16,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813056446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:16,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:16,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:02:16,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243209307] [2023-12-16 20:02:16,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:16,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:02:16,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:16,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:02:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:02:16,580 INFO L87 Difference]: Start difference. First operand 2246 states and 3511 transitions. Second operand has 7 states, 7 states have (on average 29.0) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:17,306 INFO L93 Difference]: Finished difference Result 7186 states and 11280 transitions. [2023-12-16 20:02:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 20:02:17,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:17,312 INFO L225 Difference]: With dead ends: 7186 [2023-12-16 20:02:17,312 INFO L226 Difference]: Without dead ends: 3839 [2023-12-16 20:02:17,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-16 20:02:17,316 INFO L413 NwaCegarLoop]: 2637 mSDtfsCounter, 5981 mSDsluCounter, 9087 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5981 SdHoareTripleChecker+Valid, 11724 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:17,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5981 Valid, 11724 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 20:02:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2023-12-16 20:02:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 2484. [2023-12-16 20:02:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2483 states have (on average 1.567861457913814) internal successors, (3893), 2483 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3893 transitions. [2023-12-16 20:02:17,352 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3893 transitions. Word has length 203 [2023-12-16 20:02:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:17,352 INFO L495 AbstractCegarLoop]: Abstraction has 2484 states and 3893 transitions. [2023-12-16 20:02:17,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3893 transitions. [2023-12-16 20:02:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:17,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:17,355 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] [2023-12-16 20:02:17,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-16 20:02:17,356 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:17,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:17,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1751773184, now seen corresponding path program 1 times [2023-12-16 20:02:17,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:17,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951050068] [2023-12-16 20:02:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:17,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:18,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:18,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951050068] [2023-12-16 20:02:18,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951050068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:18,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:18,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 20:02:18,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987055223] [2023-12-16 20:02:18,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:18,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 20:02:18,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 20:02:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:02:18,110 INFO L87 Difference]: Start difference. First operand 2484 states and 3893 transitions. Second operand has 7 states, 7 states have (on average 29.0) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:18,900 INFO L93 Difference]: Finished difference Result 4976 states and 7848 transitions. [2023-12-16 20:02:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:02:18,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:18,905 INFO L225 Difference]: With dead ends: 4976 [2023-12-16 20:02:18,905 INFO L226 Difference]: Without dead ends: 3875 [2023-12-16 20:02:18,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-16 20:02:18,907 INFO L413 NwaCegarLoop]: 2579 mSDtfsCounter, 3917 mSDsluCounter, 6468 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 9047 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:18,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3917 Valid, 9047 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 20:02:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2023-12-16 20:02:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 3044. [2023-12-16 20:02:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 3043 states have (on average 1.5527440026289845) internal successors, (4725), 3043 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 4725 transitions. [2023-12-16 20:02:18,943 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 4725 transitions. Word has length 203 [2023-12-16 20:02:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:18,943 INFO L495 AbstractCegarLoop]: Abstraction has 3044 states and 4725 transitions. [2023-12-16 20:02:18,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 4725 transitions. [2023-12-16 20:02:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:18,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:18,947 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] [2023-12-16 20:02:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-16 20:02:18,947 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:18,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash -754467962, now seen corresponding path program 1 times [2023-12-16 20:02:18,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:18,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192697478] [2023-12-16 20:02:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:19,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:19,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192697478] [2023-12-16 20:02:19,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192697478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:19,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:19,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:02:19,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84491200] [2023-12-16 20:02:19,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:19,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:02:19,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:19,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:02:19,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:02:19,707 INFO L87 Difference]: Start difference. First operand 3044 states and 4725 transitions. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:21,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:21,085 INFO L93 Difference]: Finished difference Result 6632 states and 10425 transitions. [2023-12-16 20:02:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 20:02:21,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:21,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:21,090 INFO L225 Difference]: With dead ends: 6632 [2023-12-16 20:02:21,090 INFO L226 Difference]: Without dead ends: 5531 [2023-12-16 20:02:21,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-16 20:02:21,092 INFO L413 NwaCegarLoop]: 2362 mSDtfsCounter, 5155 mSDsluCounter, 11342 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 13704 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:21,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5155 Valid, 13704 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2117 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 20:02:21,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5531 states. [2023-12-16 20:02:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5531 to 3154. [2023-12-16 20:02:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3154 states, 3153 states have (on average 1.5515382175705676) internal successors, (4892), 3153 states have internal predecessors, (4892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 4892 transitions. [2023-12-16 20:02:21,145 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 4892 transitions. Word has length 203 [2023-12-16 20:02:21,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:21,145 INFO L495 AbstractCegarLoop]: Abstraction has 3154 states and 4892 transitions. [2023-12-16 20:02:21,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:21,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 4892 transitions. [2023-12-16 20:02:21,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:21,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:21,149 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] [2023-12-16 20:02:21,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-16 20:02:21,149 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:21,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1628491518, now seen corresponding path program 1 times [2023-12-16 20:02:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085956276] [2023-12-16 20:02:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:21,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:21,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:21,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085956276] [2023-12-16 20:02:21,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085956276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:21,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:21,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 20:02:21,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583211199] [2023-12-16 20:02:21,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:21,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 20:02:21,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:21,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 20:02:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 20:02:21,754 INFO L87 Difference]: Start difference. First operand 3154 states and 4892 transitions. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:22,791 INFO L93 Difference]: Finished difference Result 6591 states and 10252 transitions. [2023-12-16 20:02:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 20:02:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:22,795 INFO L225 Difference]: With dead ends: 6591 [2023-12-16 20:02:22,796 INFO L226 Difference]: Without dead ends: 4908 [2023-12-16 20:02:22,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:02:22,798 INFO L413 NwaCegarLoop]: 2142 mSDtfsCounter, 2556 mSDsluCounter, 5429 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 7571 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:22,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2556 Valid, 7571 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 20:02:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4908 states. [2023-12-16 20:02:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4908 to 3412. [2023-12-16 20:02:22,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 1.543242450894166) internal successors, (5264), 3411 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5264 transitions. [2023-12-16 20:02:22,855 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5264 transitions. Word has length 203 [2023-12-16 20:02:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:22,855 INFO L495 AbstractCegarLoop]: Abstraction has 3412 states and 5264 transitions. [2023-12-16 20:02:22,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5264 transitions. [2023-12-16 20:02:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-16 20:02:22,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:22,859 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] [2023-12-16 20:02:22,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-16 20:02:22,859 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:22,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:22,860 INFO L85 PathProgramCache]: Analyzing trace with hash 300440708, now seen corresponding path program 1 times [2023-12-16 20:02:22,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:22,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993182843] [2023-12-16 20:02:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:22,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:23,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:23,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993182843] [2023-12-16 20:02:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993182843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:23,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:23,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:02:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441972059] [2023-12-16 20:02:23,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:23,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:02:23,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:23,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:02:23,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:02:23,574 INFO L87 Difference]: Start difference. First operand 3412 states and 5264 transitions. Second operand has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:24,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:24,838 INFO L93 Difference]: Finished difference Result 8279 states and 12975 transitions. [2023-12-16 20:02:24,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 20:02:24,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-12-16 20:02:24,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:24,844 INFO L225 Difference]: With dead ends: 8279 [2023-12-16 20:02:24,845 INFO L226 Difference]: Without dead ends: 6526 [2023-12-16 20:02:24,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-12-16 20:02:24,847 INFO L413 NwaCegarLoop]: 2396 mSDtfsCounter, 3756 mSDsluCounter, 10330 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 12726 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:24,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 12726 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 20:02:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2023-12-16 20:02:24,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 3453. [2023-12-16 20:02:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 3452 states have (on average 1.541135573580533) internal successors, (5320), 3452 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 5320 transitions. [2023-12-16 20:02:24,900 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 5320 transitions. Word has length 203 [2023-12-16 20:02:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:24,900 INFO L495 AbstractCegarLoop]: Abstraction has 3453 states and 5320 transitions. [2023-12-16 20:02:24,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:24,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 5320 transitions. [2023-12-16 20:02:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-16 20:02:24,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:24,905 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] [2023-12-16 20:02:24,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-16 20:02:24,905 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:24,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash 235850228, now seen corresponding path program 1 times [2023-12-16 20:02:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:24,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001457009] [2023-12-16 20:02:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:24,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:25,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:25,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001457009] [2023-12-16 20:02:25,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001457009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:25,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:25,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 20:02:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310498399] [2023-12-16 20:02:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 20:02:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 20:02:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 20:02:25,806 INFO L87 Difference]: Start difference. First operand 3453 states and 5320 transitions. Second operand has 11 states, 11 states have (on average 18.545454545454547) internal successors, (204), 10 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:26,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:02:26,480 INFO L93 Difference]: Finished difference Result 9814 states and 15391 transitions. [2023-12-16 20:02:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 20:02:26,481 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.545454545454547) internal successors, (204), 10 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2023-12-16 20:02:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:02:26,489 INFO L225 Difference]: With dead ends: 9814 [2023-12-16 20:02:26,489 INFO L226 Difference]: Without dead ends: 8582 [2023-12-16 20:02:26,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2023-12-16 20:02:26,492 INFO L413 NwaCegarLoop]: 2687 mSDtfsCounter, 13765 mSDsluCounter, 16363 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13765 SdHoareTripleChecker+Valid, 19050 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:26,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13765 Valid, 19050 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 20:02:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2023-12-16 20:02:26,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 4099. [2023-12-16 20:02:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 4098 states have (on average 1.5331869204489994) internal successors, (6283), 4098 states have internal predecessors, (6283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 6283 transitions. [2023-12-16 20:02:26,553 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 6283 transitions. Word has length 204 [2023-12-16 20:02:26,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:02:26,553 INFO L495 AbstractCegarLoop]: Abstraction has 4099 states and 6283 transitions. [2023-12-16 20:02:26,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.545454545454547) internal successors, (204), 10 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 20:02:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 6283 transitions. [2023-12-16 20:02:26,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-16 20:02:26,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:02:26,557 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] [2023-12-16 20:02:26,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-16 20:02:26,557 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:02:26,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:02:26,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2097542410, now seen corresponding path program 1 times [2023-12-16 20:02:26,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:02:26,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933359842] [2023-12-16 20:02:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:02:26,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:02:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:02:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:02:27,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:02:27,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933359842] [2023-12-16 20:02:27,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933359842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:02:27,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:02:27,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-16 20:02:27,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589947016] [2023-12-16 20:02:27,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:02:27,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 20:02:27,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:02:27,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 20:02:27,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-12-16 20:02:27,490 INFO L87 Difference]: Start difference. First operand 4099 states and 6283 transitions. Second operand has 18 states, 18 states have (on average 11.333333333333334) internal successors, (204), 18 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 20:02:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-16 20:02:30,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6170 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2672, Invalid=12334, Unknown=0, NotChecked=0, Total=15006 [2023-12-16 20:02:30,958 INFO L413 NwaCegarLoop]: 2639 mSDtfsCounter, 40379 mSDsluCounter, 45652 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40379 SdHoareTripleChecker+Valid, 48291 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 20:02:30,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40379 Valid, 48291 Invalid, 701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 20:02:30,959 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 20:02:30,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-16 20:02:30,960 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (4099states) and FLOYD_HOARE automaton (currently 113 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-5-1 term,while SimplifyDDA2 was simplifying 5 xjuncts wrt. a ATOM-1 context. [2023-12-16 20:02:30,971 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:02:30,973 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 20:02:30,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 08:02:30 BoogieIcfgContainer [2023-12-16 20:02:30,974 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 20:02:30,974 INFO L158 Benchmark]: Toolchain (without parser) took 47705.16ms. Allocated memory was 191.9MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 128.1MB in the beginning and 997.5MB in the end (delta: -869.4MB). Peak memory consumption was 455.8MB. Max. memory is 8.0GB. [2023-12-16 20:02:30,975 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 142.7MB in the beginning and 142.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 20:02:30,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 721.80ms. Allocated memory was 191.9MB in the beginning and 239.1MB in the end (delta: 47.2MB). Free memory was 127.9MB in the beginning and 142.7MB in the end (delta: -14.8MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. [2023-12-16 20:02:30,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 372.63ms. Allocated memory is still 239.1MB. Free memory was 142.7MB in the beginning and 120.0MB in the end (delta: 22.7MB). Peak memory consumption was 82.4MB. Max. memory is 8.0GB. [2023-12-16 20:02:30,975 INFO L158 Benchmark]: Boogie Preprocessor took 532.05ms. Allocated memory was 239.1MB in the beginning and 475.0MB in the end (delta: 235.9MB). Free memory was 120.0MB in the beginning and 321.7MB in the end (delta: -201.7MB). Peak memory consumption was 56.8MB. Max. memory is 8.0GB. [2023-12-16 20:02:30,975 INFO L158 Benchmark]: RCFGBuilder took 2693.23ms. Allocated memory was 475.0MB in the beginning and 651.2MB in the end (delta: 176.2MB). Free memory was 321.7MB in the beginning and 427.1MB in the end (delta: -105.4MB). Peak memory consumption was 159.4MB. Max. memory is 8.0GB. [2023-12-16 20:02:30,975 INFO L158 Benchmark]: TraceAbstraction took 43381.06ms. Allocated memory was 651.2MB in the beginning and 1.5GB in the end (delta: 865.1MB). Free memory was 426.6MB in the beginning and 997.5MB in the end (delta: -570.9MB). Peak memory consumption was 293.6MB. Max. memory is 8.0GB. [2023-12-16 20:02:30,976 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory was 142.7MB in the beginning and 142.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 721.80ms. Allocated memory was 191.9MB in the beginning and 239.1MB in the end (delta: 47.2MB). Free memory was 127.9MB in the beginning and 142.7MB in the end (delta: -14.8MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 372.63ms. Allocated memory is still 239.1MB. Free memory was 142.7MB in the beginning and 120.0MB in the end (delta: 22.7MB). Peak memory consumption was 82.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 532.05ms. Allocated memory was 239.1MB in the beginning and 475.0MB in the end (delta: 235.9MB). Free memory was 120.0MB in the beginning and 321.7MB in the end (delta: -201.7MB). Peak memory consumption was 56.8MB. Max. memory is 8.0GB. * RCFGBuilder took 2693.23ms. Allocated memory was 475.0MB in the beginning and 651.2MB in the end (delta: 176.2MB). Free memory was 321.7MB in the beginning and 427.1MB in the end (delta: -105.4MB). Peak memory consumption was 159.4MB. Max. memory is 8.0GB. * TraceAbstraction took 43381.06ms. Allocated memory was 651.2MB in the beginning and 1.5GB in the end (delta: 865.1MB). Free memory was 426.6MB in the beginning and 997.5MB in the end (delta: -570.9MB). Peak memory consumption was 293.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (4099states) and FLOYD_HOARE automaton (currently 113 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-5-1 term,while SimplifyDDA2 was simplifying 5 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 866 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 43.3s, OverallIterations: 36, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 18.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212152 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 212152 mSDsluCounter, 382760 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 313760 mSDsCounter, 172 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12731 IncrementalHoareTripleChecker+Invalid, 12903 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 172 mSolverCounterUnsat, 69000 mSDtfsCounter, 12731 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 520 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10305 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4099occurred in iteration=35, InterpolantAutomatonStates: 413, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 35 MinimizatonAttempts, 64512 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 16.9s InterpolantComputationTime, 7237 NumberOfCodeBlocks, 7237 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 7201 ConstructedInterpolants, 0 QuantifiedInterpolants, 19078 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available [2023-12-16 20:02:30,981 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown