/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:29:17,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:29:17,477 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:29:17,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:29:17,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:29:17,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:29:17,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:29:17,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:29:17,509 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:29:17,512 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:29:17,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:29:17,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:29:17,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:29:17,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:29:17,515 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:29:17,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:29:17,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:29:17,515 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:29:17,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:29:17,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:29:17,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:29:17,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:29:17,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:29:17,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:29:17,516 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:29:17,517 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:29:17,517 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:29:17,517 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:29:17,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:29:17,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:29:17,518 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:29:17,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:29:17,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:29:17,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:29:17,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:29:17,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:29:17,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:29:17,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:29:17,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:29:17,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:29:17,520 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:29:17,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:29:17,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:29:17,520 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:29:17,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:29:17,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:29:17,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:29:17,766 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:29:17,766 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:29:17,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i [2023-12-16 04:29:19,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:29:19,257 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:29:19,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i [2023-12-16 04:29:19,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b249929/9108a85a02d143059e31e6e901e5a176/FLAGfb3e68274 [2023-12-16 04:29:19,273 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b249929/9108a85a02d143059e31e6e901e5a176 [2023-12-16 04:29:19,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:29:19,277 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:29:19,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:29:19,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:29:19,286 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:29:19,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc72bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19, skipping insertion in model container [2023-12-16 04:29:19,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,308 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:29:19,440 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i[916,929] [2023-12-16 04:29:19,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:29:19,490 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:29:19,498 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-62.i[916,929] [2023-12-16 04:29:19,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:29:19,579 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:29:19,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19 WrapperNode [2023-12-16 04:29:19,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:29:19,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:29:19,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:29:19,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:29:19,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,671 INFO L138 Inliner]: procedures = 26, calls = 107, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 322 [2023-12-16 04:29:19,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:29:19,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:29:19,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:29:19,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:29:19,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,737 INFO L175 MemorySlicer]: Split 87 memory accesses to 2 slices as follows [2, 85]. 98 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10]. The 14 writes are split as follows [0, 14]. [2023-12-16 04:29:19,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:29:19,802 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:29:19,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:29:19,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:29:19,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (1/1) ... [2023-12-16 04:29:19,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:29:19,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:29:19,870 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 04:29:19,890 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 04:29:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:29:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:29:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:29:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:29:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:29:19,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:29:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:29:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:29:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:29:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:29:19,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:29:20,089 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:29:20,090 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:29:20,340 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:29:20,368 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:29:20,368 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:29:20,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:29:20 BoogieIcfgContainer [2023-12-16 04:29:20,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:29:20,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:29:20,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:29:20,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:29:20,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:29:19" (1/3) ... [2023-12-16 04:29:20,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110b84b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:29:20, skipping insertion in model container [2023-12-16 04:29:20,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:29:19" (2/3) ... [2023-12-16 04:29:20,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110b84b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:29:20, skipping insertion in model container [2023-12-16 04:29:20,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:29:20" (3/3) ... [2023-12-16 04:29:20,374 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-62.i [2023-12-16 04:29:20,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:29:20,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:29:20,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:29:20,421 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;@47d2b59a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:29:20,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:29:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 04:29:20,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:20,431 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:20,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:20,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:20,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1354780057, now seen corresponding path program 1 times [2023-12-16 04:29:20,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:20,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686240764] [2023-12-16 04:29:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:20,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:20,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:20,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686240764] [2023-12-16 04:29:20,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686240764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:20,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:20,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:29:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130870686] [2023-12-16 04:29:20,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:20,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:29:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:20,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:29:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:29:20,668 INFO L87 Difference]: Start difference. First operand has 66 states, 55 states have (on average 1.4727272727272727) internal successors, (81), 56 states have internal predecessors, (81), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:20,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:20,711 INFO L93 Difference]: Finished difference Result 129 states and 200 transitions. [2023-12-16 04:29:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:29:20,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-12-16 04:29:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:20,719 INFO L225 Difference]: With dead ends: 129 [2023-12-16 04:29:20,719 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 04:29:20,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:29:20,724 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:20,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:29:20,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 04:29:20,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-16 04:29:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2023-12-16 04:29:20,766 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 68 [2023-12-16 04:29:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:20,767 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2023-12-16 04:29:20,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:20,768 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2023-12-16 04:29:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 04:29:20,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:20,773 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:20,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:29:20,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:20,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1294320009, now seen corresponding path program 1 times [2023-12-16 04:29:20,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:20,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643055495] [2023-12-16 04:29:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:20,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:20,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643055495] [2023-12-16 04:29:20,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643055495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:20,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:20,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:29:20,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425893988] [2023-12-16 04:29:20,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:20,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:29:20,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:29:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:29:20,999 INFO L87 Difference]: Start difference. First operand 64 states and 92 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:21,054 INFO L93 Difference]: Finished difference Result 135 states and 194 transitions. [2023-12-16 04:29:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:29:21,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2023-12-16 04:29:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:21,056 INFO L225 Difference]: With dead ends: 135 [2023-12-16 04:29:21,056 INFO L226 Difference]: Without dead ends: 72 [2023-12-16 04:29:21,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 04:29:21,057 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 12 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:21,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 252 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:29:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-16 04:29:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2023-12-16 04:29:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 56 states have internal predecessors, (78), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2023-12-16 04:29:21,063 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 68 [2023-12-16 04:29:21,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:21,064 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2023-12-16 04:29:21,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:21,064 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2023-12-16 04:29:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 04:29:21,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:21,065 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:21,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:29:21,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:21,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1351578311, now seen corresponding path program 1 times [2023-12-16 04:29:21,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:21,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483340795] [2023-12-16 04:29:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:21,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483340795] [2023-12-16 04:29:21,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483340795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:21,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:21,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:29:21,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671839933] [2023-12-16 04:29:21,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:21,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:29:21,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:21,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:29:21,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:29:21,173 INFO L87 Difference]: Start difference. First operand 66 states and 94 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:21,198 INFO L93 Difference]: Finished difference Result 135 states and 192 transitions. [2023-12-16 04:29:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:29:21,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2023-12-16 04:29:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:21,199 INFO L225 Difference]: With dead ends: 135 [2023-12-16 04:29:21,199 INFO L226 Difference]: Without dead ends: 70 [2023-12-16 04:29:21,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 04:29:21,201 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 3 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:21,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 253 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:29:21,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-16 04:29:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-12-16 04:29:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 58 states have internal predecessors, (80), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2023-12-16 04:29:21,206 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 68 [2023-12-16 04:29:21,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:21,207 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2023-12-16 04:29:21,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2023-12-16 04:29:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 04:29:21,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:21,208 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:21,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:29:21,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:21,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:21,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1351637893, now seen corresponding path program 1 times [2023-12-16 04:29:21,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:21,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101893725] [2023-12-16 04:29:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:21,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:21,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:21,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101893725] [2023-12-16 04:29:21,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101893725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:21,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:21,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:29:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816305667] [2023-12-16 04:29:21,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:21,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:29:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:21,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:29:21,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:29:21,459 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:21,580 INFO L93 Difference]: Finished difference Result 160 states and 226 transitions. [2023-12-16 04:29:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:29:21,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2023-12-16 04:29:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:21,585 INFO L225 Difference]: With dead ends: 160 [2023-12-16 04:29:21,585 INFO L226 Difference]: Without dead ends: 93 [2023-12-16 04:29:21,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 04:29:21,596 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 82 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:21,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 172 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:29:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-16 04:29:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 68. [2023-12-16 04:29:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2023-12-16 04:29:21,602 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 68 [2023-12-16 04:29:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:21,602 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2023-12-16 04:29:21,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:21,602 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2023-12-16 04:29:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 04:29:21,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:21,603 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:21,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 04:29:21,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:21,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:21,604 INFO L85 PathProgramCache]: Analyzing trace with hash -561595094, now seen corresponding path program 1 times [2023-12-16 04:29:21,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:21,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134905463] [2023-12-16 04:29:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:21,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:21,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:21,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134905463] [2023-12-16 04:29:21,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134905463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:21,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:21,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:29:21,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875534383] [2023-12-16 04:29:21,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:21,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:29:21,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:21,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:29:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:29:21,838 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:22,049 INFO L93 Difference]: Finished difference Result 228 states and 319 transitions. [2023-12-16 04:29:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:29:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 70 [2023-12-16 04:29:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:22,053 INFO L225 Difference]: With dead ends: 228 [2023-12-16 04:29:22,053 INFO L226 Difference]: Without dead ends: 161 [2023-12-16 04:29:22,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:29:22,056 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 199 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:22,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 360 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:29:22,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-16 04:29:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 78. [2023-12-16 04:29:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 68 states have internal predecessors, (93), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2023-12-16 04:29:22,073 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 109 transitions. Word has length 70 [2023-12-16 04:29:22,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:22,075 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 109 transitions. [2023-12-16 04:29:22,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 109 transitions. [2023-12-16 04:29:22,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 04:29:22,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:22,076 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:22,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 04:29:22,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:22,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:22,077 INFO L85 PathProgramCache]: Analyzing trace with hash -119192321, now seen corresponding path program 1 times [2023-12-16 04:29:22,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:22,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124222597] [2023-12-16 04:29:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:22,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:22,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:22,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124222597] [2023-12-16 04:29:22,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124222597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:22,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:22,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:29:22,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677563431] [2023-12-16 04:29:22,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:22,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:29:22,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:22,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:29:22,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:29:22,229 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:22,264 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2023-12-16 04:29:22,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:29:22,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2023-12-16 04:29:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:22,265 INFO L225 Difference]: With dead ends: 171 [2023-12-16 04:29:22,265 INFO L226 Difference]: Without dead ends: 94 [2023-12-16 04:29:22,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 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 04:29:22,268 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 60 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:22,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 319 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:29:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-16 04:29:22,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2023-12-16 04:29:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.352112676056338) internal successors, (96), 71 states have internal predecessors, (96), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:22,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2023-12-16 04:29:22,280 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 72 [2023-12-16 04:29:22,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:22,280 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2023-12-16 04:29:22,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:22,280 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2023-12-16 04:29:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 04:29:22,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:22,282 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:22,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 04:29:22,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:22,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1965214734, now seen corresponding path program 1 times [2023-12-16 04:29:22,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:22,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435936958] [2023-12-16 04:29:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:22,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:22,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:22,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435936958] [2023-12-16 04:29:22,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435936958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:22,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:22,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:29:22,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880301934] [2023-12-16 04:29:22,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:29:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:29:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:29:22,793 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:22,950 INFO L93 Difference]: Finished difference Result 221 states and 302 transitions. [2023-12-16 04:29:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:29:22,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2023-12-16 04:29:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:22,951 INFO L225 Difference]: With dead ends: 221 [2023-12-16 04:29:22,951 INFO L226 Difference]: Without dead ends: 141 [2023-12-16 04:29:22,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:29:22,952 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 98 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:22,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 300 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:29:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-16 04:29:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 81. [2023-12-16 04:29:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 111 transitions. [2023-12-16 04:29:22,964 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 111 transitions. Word has length 72 [2023-12-16 04:29:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:22,965 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 111 transitions. [2023-12-16 04:29:22,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 111 transitions. [2023-12-16 04:29:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 04:29:22,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:22,969 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:22,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 04:29:22,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:22,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1929324996, now seen corresponding path program 1 times [2023-12-16 04:29:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:22,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681639957] [2023-12-16 04:29:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:22,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:23,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:23,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681639957] [2023-12-16 04:29:23,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681639957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:23,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:23,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:29:23,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782010737] [2023-12-16 04:29:23,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:23,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:29:23,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:23,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:29:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:29:23,475 INFO L87 Difference]: Start difference. First operand 81 states and 111 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:23,662 INFO L93 Difference]: Finished difference Result 192 states and 261 transitions. [2023-12-16 04:29:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:29:23,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2023-12-16 04:29:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:23,663 INFO L225 Difference]: With dead ends: 192 [2023-12-16 04:29:23,663 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 04:29:23,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:29:23,666 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 81 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:23,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 331 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:29:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 04:29:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 81. [2023-12-16 04:29:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.323943661971831) internal successors, (94), 71 states have internal predecessors, (94), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:23,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 110 transitions. [2023-12-16 04:29:23,671 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 110 transitions. Word has length 72 [2023-12-16 04:29:23,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:23,671 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 110 transitions. [2023-12-16 04:29:23,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 110 transitions. [2023-12-16 04:29:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 04:29:23,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:23,672 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:23,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 04:29:23,672 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:23,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1720932689, now seen corresponding path program 1 times [2023-12-16 04:29:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:23,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156525749] [2023-12-16 04:29:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:23,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:23,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:23,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156525749] [2023-12-16 04:29:23,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156525749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:23,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:23,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:29:23,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166395122] [2023-12-16 04:29:23,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:23,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:29:23,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:29:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:29:23,786 INFO L87 Difference]: Start difference. First operand 81 states and 110 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:23,841 INFO L93 Difference]: Finished difference Result 191 states and 260 transitions. [2023-12-16 04:29:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:29:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 74 [2023-12-16 04:29:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:23,842 INFO L225 Difference]: With dead ends: 191 [2023-12-16 04:29:23,842 INFO L226 Difference]: Without dead ends: 111 [2023-12-16 04:29:23,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:29:23,843 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 80 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:23,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 410 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:29:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-16 04:29:23,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 82. [2023-12-16 04:29:23,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 111 transitions. [2023-12-16 04:29:23,845 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 111 transitions. Word has length 74 [2023-12-16 04:29:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:23,846 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 111 transitions. [2023-12-16 04:29:23,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 111 transitions. [2023-12-16 04:29:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 04:29:23,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:23,846 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:23,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 04:29:23,847 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:23,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:23,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1127619112, now seen corresponding path program 1 times [2023-12-16 04:29:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:23,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067658758] [2023-12-16 04:29:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-16 04:29:24,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067658758] [2023-12-16 04:29:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067658758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:29:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138496550] [2023-12-16 04:29:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:24,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:29:24,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:29:24,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:29:24,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:29:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:24,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 04:29:24,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:29:24,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:29:24,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-16 04:29:24,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:29:24,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 36 [2023-12-16 04:29:24,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:29:24,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 39 [2023-12-16 04:29:24,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:29:24,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 48 [2023-12-16 04:29:24,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 51 [2023-12-16 04:29:25,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:29:25,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 19 [2023-12-16 04:29:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-16 04:29:25,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:29:26,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:29:26,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 1 [2023-12-16 04:29:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-16 04:29:26,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138496550] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:29:26,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:29:26,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 30 [2023-12-16 04:29:26,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506061592] [2023-12-16 04:29:26,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:29:26,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-16 04:29:26,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-16 04:29:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2023-12-16 04:29:26,253 INFO L87 Difference]: Start difference. First operand 82 states and 111 transitions. Second operand has 30 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 30 states have internal predecessors, (96), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 5 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-16 04:29:28,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:28,661 INFO L93 Difference]: Finished difference Result 287 states and 378 transitions. [2023-12-16 04:29:28,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-16 04:29:28,662 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 30 states have internal predecessors, (96), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 5 states have call predecessors, (16), 8 states have call successors, (16) Word has length 74 [2023-12-16 04:29:28,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:28,663 INFO L225 Difference]: With dead ends: 287 [2023-12-16 04:29:28,663 INFO L226 Difference]: Without dead ends: 206 [2023-12-16 04:29:28,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=759, Invalid=3531, Unknown=0, NotChecked=0, Total=4290 [2023-12-16 04:29:28,665 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 520 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:28,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 413 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 04:29:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-16 04:29:28,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 86. [2023-12-16 04:29:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:28,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2023-12-16 04:29:28,670 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 74 [2023-12-16 04:29:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:28,670 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2023-12-16 04:29:28,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 30 states have internal predecessors, (96), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 5 states have call predecessors, (16), 8 states have call successors, (16) [2023-12-16 04:29:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2023-12-16 04:29:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 04:29:28,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:28,671 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:28,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:29:28,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 04:29:28,880 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:28,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash -690505933, now seen corresponding path program 1 times [2023-12-16 04:29:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:28,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035150852] [2023-12-16 04:29:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:28,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:28,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:28,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:28,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:28,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:28,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:28,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:28,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035150852] [2023-12-16 04:29:28,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035150852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:28,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:28,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:29:28,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680101601] [2023-12-16 04:29:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:28,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:29:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:29:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:29:28,976 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:29,090 INFO L93 Difference]: Finished difference Result 192 states and 249 transitions. [2023-12-16 04:29:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:29:29,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2023-12-16 04:29:29,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:29,091 INFO L225 Difference]: With dead ends: 192 [2023-12-16 04:29:29,091 INFO L226 Difference]: Without dead ends: 107 [2023-12-16 04:29:29,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 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 04:29:29,092 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 86 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:29,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 181 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:29:29,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-16 04:29:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 90. [2023-12-16 04:29:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 114 transitions. [2023-12-16 04:29:29,097 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 114 transitions. Word has length 75 [2023-12-16 04:29:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:29,097 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 114 transitions. [2023-12-16 04:29:29,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 114 transitions. [2023-12-16 04:29:29,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 04:29:29,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:29,098 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:29,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 04:29:29,098 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:29,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:29,098 INFO L85 PathProgramCache]: Analyzing trace with hash -176075441, now seen corresponding path program 1 times [2023-12-16 04:29:29,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:29,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870660887] [2023-12-16 04:29:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:29,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:29,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:29,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:29,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:29,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:29,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:29,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:29,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:29,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:29,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870660887] [2023-12-16 04:29:29,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870660887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:29,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:29,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:29:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793364952] [2023-12-16 04:29:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:29,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:29:29,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:29,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:29:29,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:29:29,721 INFO L87 Difference]: Start difference. First operand 90 states and 114 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:29,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:29,997 INFO L93 Difference]: Finished difference Result 263 states and 333 transitions. [2023-12-16 04:29:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:29:29,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2023-12-16 04:29:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:29,998 INFO L225 Difference]: With dead ends: 263 [2023-12-16 04:29:29,998 INFO L226 Difference]: Without dead ends: 174 [2023-12-16 04:29:29,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:29:29,999 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 113 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:29,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 334 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:29:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-16 04:29:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 99. [2023-12-16 04:29:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 87 states have internal predecessors, (109), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2023-12-16 04:29:30,003 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 75 [2023-12-16 04:29:30,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:30,003 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2023-12-16 04:29:30,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2023-12-16 04:29:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 04:29:30,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:30,004 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:30,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 04:29:30,004 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:30,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash 835041809, now seen corresponding path program 1 times [2023-12-16 04:29:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:30,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945480630] [2023-12-16 04:29:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:30,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:30,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:30,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:30,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:30,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:30,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945480630] [2023-12-16 04:29:30,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945480630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:30,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:30,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-16 04:29:30,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969635773] [2023-12-16 04:29:30,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:30,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 04:29:30,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 04:29:30,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:29:30,987 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:31,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:31,554 INFO L93 Difference]: Finished difference Result 241 states and 303 transitions. [2023-12-16 04:29:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 04:29:31,565 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 75 [2023-12-16 04:29:31,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:31,565 INFO L225 Difference]: With dead ends: 241 [2023-12-16 04:29:31,566 INFO L226 Difference]: Without dead ends: 143 [2023-12-16 04:29:31,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:29:31,566 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 182 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:31,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 747 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:29:31,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-16 04:29:31,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 100. [2023-12-16 04:29:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.25) internal successors, (110), 88 states have internal predecessors, (110), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2023-12-16 04:29:31,593 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 75 [2023-12-16 04:29:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:31,593 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2023-12-16 04:29:31,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2023-12-16 04:29:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 04:29:31,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:31,594 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:31,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 04:29:31,595 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:31,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash 42779277, now seen corresponding path program 1 times [2023-12-16 04:29:31,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:31,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974431596] [2023-12-16 04:29:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:31,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:32,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:32,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:32,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974431596] [2023-12-16 04:29:32,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974431596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:32,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:32,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-16 04:29:32,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411823051] [2023-12-16 04:29:32,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:32,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 04:29:32,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 04:29:32,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:29:32,450 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:33,918 INFO L93 Difference]: Finished difference Result 626 states and 780 transitions. [2023-12-16 04:29:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-16 04:29:33,932 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2023-12-16 04:29:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:33,934 INFO L225 Difference]: With dead ends: 626 [2023-12-16 04:29:33,934 INFO L226 Difference]: Without dead ends: 527 [2023-12-16 04:29:33,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=536, Invalid=2116, Unknown=0, NotChecked=0, Total=2652 [2023-12-16 04:29:33,936 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 882 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:33,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 771 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 04:29:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-12-16 04:29:33,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 213. [2023-12-16 04:29:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 190 states have (on average 1.263157894736842) internal successors, (240), 190 states have internal predecessors, (240), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:29:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 272 transitions. [2023-12-16 04:29:33,961 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 272 transitions. Word has length 75 [2023-12-16 04:29:33,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:33,961 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 272 transitions. [2023-12-16 04:29:33,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:33,961 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 272 transitions. [2023-12-16 04:29:33,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 04:29:33,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:33,962 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:33,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 04:29:33,962 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:33,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1053896527, now seen corresponding path program 1 times [2023-12-16 04:29:33,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:33,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60906337] [2023-12-16 04:29:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:33,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:34,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:34,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:34,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:34,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:34,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:34,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:34,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60906337] [2023-12-16 04:29:34,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60906337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:34,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:34,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:29:34,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756897584] [2023-12-16 04:29:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:34,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:29:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:29:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:29:34,472 INFO L87 Difference]: Start difference. First operand 213 states and 272 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:34,706 INFO L93 Difference]: Finished difference Result 511 states and 648 transitions. [2023-12-16 04:29:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:29:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2023-12-16 04:29:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:34,708 INFO L225 Difference]: With dead ends: 511 [2023-12-16 04:29:34,708 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 04:29:34,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:29:34,710 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 82 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:34,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 400 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:29:34,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 04:29:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 213. [2023-12-16 04:29:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 190 states have (on average 1.2421052631578948) internal successors, (236), 190 states have internal predecessors, (236), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-16 04:29:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 268 transitions. [2023-12-16 04:29:34,723 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 268 transitions. Word has length 75 [2023-12-16 04:29:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:34,723 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 268 transitions. [2023-12-16 04:29:34,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 268 transitions. [2023-12-16 04:29:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 04:29:34,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:34,726 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:34,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 04:29:34,726 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:34,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:34,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1308603953, now seen corresponding path program 1 times [2023-12-16 04:29:34,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:34,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771683009] [2023-12-16 04:29:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:34,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-16 04:29:35,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:35,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771683009] [2023-12-16 04:29:35,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771683009] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:29:35,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134685834] [2023-12-16 04:29:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:35,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:29:35,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:29:35,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:29:35,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:29:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:35,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 04:29:35,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:29:35,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 43 [2023-12-16 04:29:35,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-12-16 04:29:35,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-12-16 04:29:35,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:29:35,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 40 [2023-12-16 04:29:35,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:29:35,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2023-12-16 04:29:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-16 04:29:36,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:29:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:36,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134685834] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 04:29:36,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:29:36,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 11] total 30 [2023-12-16 04:29:36,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681345961] [2023-12-16 04:29:36,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:36,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:29:36,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:29:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2023-12-16 04:29:36,370 INFO L87 Difference]: Start difference. First operand 213 states and 268 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:37,106 INFO L93 Difference]: Finished difference Result 511 states and 640 transitions. [2023-12-16 04:29:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:29:37,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2023-12-16 04:29:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:37,113 INFO L225 Difference]: With dead ends: 511 [2023-12-16 04:29:37,113 INFO L226 Difference]: Without dead ends: 299 [2023-12-16 04:29:37,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 04:29:37,114 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 177 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:37,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 631 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:29:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-16 04:29:37,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 96. [2023-12-16 04:29:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 84 states have internal predecessors, (104), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2023-12-16 04:29:37,134 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 76 [2023-12-16 04:29:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:37,135 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2023-12-16 04:29:37,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2023-12-16 04:29:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 04:29:37,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:37,135 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:37,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:29:37,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 04:29:37,342 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:37,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:37,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1658149489, now seen corresponding path program 1 times [2023-12-16 04:29:37,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:37,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996475855] [2023-12-16 04:29:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:37,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:37,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:37,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996475855] [2023-12-16 04:29:37,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996475855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:37,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:37,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:29:37,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344689262] [2023-12-16 04:29:37,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:37,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:29:37,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:37,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:29:37,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:29:37,454 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:37,650 INFO L93 Difference]: Finished difference Result 243 states and 302 transitions. [2023-12-16 04:29:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:29:37,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2023-12-16 04:29:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:37,651 INFO L225 Difference]: With dead ends: 243 [2023-12-16 04:29:37,651 INFO L226 Difference]: Without dead ends: 148 [2023-12-16 04:29:37,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 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 04:29:37,652 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 69 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:37,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 221 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:29:37,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-16 04:29:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 113. [2023-12-16 04:29:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 101 states have (on average 1.198019801980198) internal successors, (121), 101 states have internal predecessors, (121), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2023-12-16 04:29:37,657 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 77 [2023-12-16 04:29:37,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:37,657 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2023-12-16 04:29:37,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2023-12-16 04:29:37,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 04:29:37,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:37,658 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:37,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 04:29:37,658 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:37,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:37,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1159926853, now seen corresponding path program 1 times [2023-12-16 04:29:37,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:37,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878435153] [2023-12-16 04:29:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:37,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:37,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:37,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878435153] [2023-12-16 04:29:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878435153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:37,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:37,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:29:37,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460096597] [2023-12-16 04:29:37,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:37,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:29:37,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:37,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:29:37,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:29:37,750 INFO L87 Difference]: Start difference. First operand 113 states and 137 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:38,272 INFO L93 Difference]: Finished difference Result 277 states and 338 transitions. [2023-12-16 04:29:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:29:38,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2023-12-16 04:29:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:38,274 INFO L225 Difference]: With dead ends: 277 [2023-12-16 04:29:38,274 INFO L226 Difference]: Without dead ends: 162 [2023-12-16 04:29:38,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 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 04:29:38,275 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 94 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:38,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 296 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:29:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-16 04:29:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 110. [2023-12-16 04:29:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 98 states have internal predecessors, (117), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-16 04:29:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2023-12-16 04:29:38,281 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 77 [2023-12-16 04:29:38,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:38,281 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2023-12-16 04:29:38,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:38,281 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2023-12-16 04:29:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 04:29:38,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:38,282 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:38,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 04:29:38,282 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:38,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:38,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1835022753, now seen corresponding path program 1 times [2023-12-16 04:29:38,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:38,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741633594] [2023-12-16 04:29:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:38,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:38,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:38,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:38,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741633594] [2023-12-16 04:29:38,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741633594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:38,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:38,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 04:29:38,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690062088] [2023-12-16 04:29:38,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:38,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:29:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:29:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:29:38,710 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:39,140 INFO L93 Difference]: Finished difference Result 324 states and 396 transitions. [2023-12-16 04:29:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 04:29:39,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2023-12-16 04:29:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:39,141 INFO L225 Difference]: With dead ends: 324 [2023-12-16 04:29:39,141 INFO L226 Difference]: Without dead ends: 215 [2023-12-16 04:29:39,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2023-12-16 04:29:39,142 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 234 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:39,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 474 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:29:39,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-16 04:29:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 165. [2023-12-16 04:29:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 147 states have (on average 1.183673469387755) internal successors, (174), 148 states have internal predecessors, (174), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 04:29:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2023-12-16 04:29:39,151 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 78 [2023-12-16 04:29:39,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:39,151 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2023-12-16 04:29:39,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2023-12-16 04:29:39,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 04:29:39,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:39,152 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:39,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 04:29:39,152 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:39,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:39,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1336800117, now seen corresponding path program 1 times [2023-12-16 04:29:39,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:39,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525224117] [2023-12-16 04:29:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:39,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:39,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525224117] [2023-12-16 04:29:39,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525224117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:39,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:39,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:29:39,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953256300] [2023-12-16 04:29:39,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:39,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:29:39,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:39,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:29:39,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:29:39,268 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:39,378 INFO L93 Difference]: Finished difference Result 426 states and 518 transitions. [2023-12-16 04:29:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:29:39,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2023-12-16 04:29:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:39,383 INFO L225 Difference]: With dead ends: 426 [2023-12-16 04:29:39,383 INFO L226 Difference]: Without dead ends: 262 [2023-12-16 04:29:39,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:29:39,384 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 139 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:39,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 206 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:29:39,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-16 04:29:39,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 175. [2023-12-16 04:29:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 157 states have (on average 1.1719745222929936) internal successors, (184), 158 states have internal predecessors, (184), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 04:29:39,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 208 transitions. [2023-12-16 04:29:39,399 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 208 transitions. Word has length 78 [2023-12-16 04:29:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:39,402 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 208 transitions. [2023-12-16 04:29:39,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 208 transitions. [2023-12-16 04:29:39,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 04:29:39,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:39,402 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:39,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 04:29:39,403 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:39,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:39,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2053877471, now seen corresponding path program 1 times [2023-12-16 04:29:39,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:39,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43943559] [2023-12-16 04:29:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:39,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:39,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:39,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43943559] [2023-12-16 04:29:39,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43943559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:39,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:39,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:29:39,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490989937] [2023-12-16 04:29:39,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:39,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:29:39,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:39,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:29:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:29:39,462 INFO L87 Difference]: Start difference. First operand 175 states and 208 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:39,614 INFO L93 Difference]: Finished difference Result 407 states and 488 transitions. [2023-12-16 04:29:39,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:29:39,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2023-12-16 04:29:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:39,615 INFO L225 Difference]: With dead ends: 407 [2023-12-16 04:29:39,615 INFO L226 Difference]: Without dead ends: 233 [2023-12-16 04:29:39,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 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 04:29:39,615 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 80 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:39,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 353 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:29:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-16 04:29:39,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 168. [2023-12-16 04:29:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 150 states have (on average 1.1666666666666667) internal successors, (175), 151 states have internal predecessors, (175), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-16 04:29:39,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2023-12-16 04:29:39,625 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 78 [2023-12-16 04:29:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:39,625 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2023-12-16 04:29:39,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2023-12-16 04:29:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 04:29:39,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:39,626 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:39,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 04:29:39,626 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:39,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:39,626 INFO L85 PathProgramCache]: Analyzing trace with hash -27641350, now seen corresponding path program 1 times [2023-12-16 04:29:39,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:39,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704329896] [2023-12-16 04:29:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:39,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:40,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:40,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704329896] [2023-12-16 04:29:40,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704329896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:40,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:40,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:29:40,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830492541] [2023-12-16 04:29:40,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:40,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:29:40,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:40,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:29:40,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:29:40,181 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:40,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:40,447 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions. [2023-12-16 04:29:40,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:29:40,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2023-12-16 04:29:40,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:40,450 INFO L225 Difference]: With dead ends: 212 [2023-12-16 04:29:40,450 INFO L226 Difference]: Without dead ends: 210 [2023-12-16 04:29:40,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:29:40,450 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 56 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:40,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 234 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:29:40,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-16 04:29:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2023-12-16 04:29:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 174 states have (on average 1.1436781609195403) internal successors, (199), 176 states have internal predecessors, (199), 20 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 04:29:40,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 239 transitions. [2023-12-16 04:29:40,474 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 239 transitions. Word has length 80 [2023-12-16 04:29:40,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:40,474 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 239 transitions. [2023-12-16 04:29:40,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 239 transitions. [2023-12-16 04:29:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 04:29:40,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:40,475 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:40,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 04:29:40,475 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:40,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:40,475 INFO L85 PathProgramCache]: Analyzing trace with hash -27581768, now seen corresponding path program 1 times [2023-12-16 04:29:40,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630591749] [2023-12-16 04:29:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:40,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:40,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:40,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630591749] [2023-12-16 04:29:40,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630591749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:40,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:40,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:29:40,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402109887] [2023-12-16 04:29:40,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:40,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:29:40,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:40,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:29:40,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:29:40,635 INFO L87 Difference]: Start difference. First operand 204 states and 239 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:40,741 INFO L93 Difference]: Finished difference Result 379 states and 444 transitions. [2023-12-16 04:29:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:29:40,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2023-12-16 04:29:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:40,743 INFO L225 Difference]: With dead ends: 379 [2023-12-16 04:29:40,743 INFO L226 Difference]: Without dead ends: 208 [2023-12-16 04:29:40,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 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 04:29:40,744 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 47 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:40,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 241 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:29:40,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-16 04:29:40,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-12-16 04:29:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 177 states have (on average 1.1299435028248588) internal successors, (200), 179 states have internal predecessors, (200), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 04:29:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 240 transitions. [2023-12-16 04:29:40,768 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 240 transitions. Word has length 80 [2023-12-16 04:29:40,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:40,769 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 240 transitions. [2023-12-16 04:29:40,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 240 transitions. [2023-12-16 04:29:40,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 04:29:40,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:40,769 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:40,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 04:29:40,770 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:40,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:40,770 INFO L85 PathProgramCache]: Analyzing trace with hash 29676534, now seen corresponding path program 1 times [2023-12-16 04:29:40,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:40,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148442908] [2023-12-16 04:29:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:40,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:41,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:41,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:41,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:41,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:41,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148442908] [2023-12-16 04:29:41,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148442908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:41,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:41,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 04:29:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094430474] [2023-12-16 04:29:41,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:41,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:29:41,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:41,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:29:41,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:29:41,359 INFO L87 Difference]: Start difference. First operand 208 states and 240 transitions. Second operand has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 04:29:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:41,718 INFO L93 Difference]: Finished difference Result 522 states and 602 transitions. [2023-12-16 04:29:41,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 04:29:41,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2023-12-16 04:29:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:41,720 INFO L225 Difference]: With dead ends: 522 [2023-12-16 04:29:41,720 INFO L226 Difference]: Without dead ends: 347 [2023-12-16 04:29:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:29:41,721 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 152 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 334 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:29:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-16 04:29:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 303. [2023-12-16 04:29:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 272 states have (on average 1.1286764705882353) internal successors, (307), 274 states have internal predecessors, (307), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 04:29:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 347 transitions. [2023-12-16 04:29:41,757 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 347 transitions. Word has length 80 [2023-12-16 04:29:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:41,757 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 347 transitions. [2023-12-16 04:29:41,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 04:29:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 347 transitions. [2023-12-16 04:29:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 04:29:41,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:41,758 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:41,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 04:29:41,758 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:41,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash 987999217, now seen corresponding path program 1 times [2023-12-16 04:29:41,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:41,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051959625] [2023-12-16 04:29:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:41,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:42,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051959625] [2023-12-16 04:29:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051959625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:42,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:42,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:29:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4670819] [2023-12-16 04:29:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:42,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:29:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:42,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:29:42,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:29:42,141 INFO L87 Difference]: Start difference. First operand 303 states and 347 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:42,440 INFO L93 Difference]: Finished difference Result 698 states and 796 transitions. [2023-12-16 04:29:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:29:42,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2023-12-16 04:29:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:42,442 INFO L225 Difference]: With dead ends: 698 [2023-12-16 04:29:42,442 INFO L226 Difference]: Without dead ends: 428 [2023-12-16 04:29:42,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:29:42,443 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 57 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:42,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 256 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:29:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-16 04:29:42,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 392. [2023-12-16 04:29:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 361 states have (on average 1.1246537396121883) internal successors, (406), 363 states have internal predecessors, (406), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 04:29:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 446 transitions. [2023-12-16 04:29:42,471 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 446 transitions. Word has length 82 [2023-12-16 04:29:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:42,472 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 446 transitions. [2023-12-16 04:29:42,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 04:29:42,473 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 446 transitions. [2023-12-16 04:29:42,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 04:29:42,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:42,473 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:42,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 04:29:42,473 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:42,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:42,474 INFO L85 PathProgramCache]: Analyzing trace with hash -406960800, now seen corresponding path program 1 times [2023-12-16 04:29:42,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:42,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771619534] [2023-12-16 04:29:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:42,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:42,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:42,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771619534] [2023-12-16 04:29:42,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771619534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:42,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:42,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:29:42,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983970161] [2023-12-16 04:29:42,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:42,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:29:42,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:42,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:29:42,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:29:42,541 INFO L87 Difference]: Start difference. First operand 392 states and 446 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:42,727 INFO L93 Difference]: Finished difference Result 661 states and 752 transitions. [2023-12-16 04:29:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:29:42,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 82 [2023-12-16 04:29:42,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:42,741 INFO L225 Difference]: With dead ends: 661 [2023-12-16 04:29:42,741 INFO L226 Difference]: Without dead ends: 302 [2023-12-16 04:29:42,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 04:29:42,742 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 8 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:42,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 171 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:29:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-16 04:29:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-12-16 04:29:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 271 states have (on average 1.1143911439114391) internal successors, (302), 273 states have internal predecessors, (302), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 04:29:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 342 transitions. [2023-12-16 04:29:42,765 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 342 transitions. Word has length 82 [2023-12-16 04:29:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:42,765 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 342 transitions. [2023-12-16 04:29:42,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:42,781 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 342 transitions. [2023-12-16 04:29:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 04:29:42,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:42,781 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:42,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-16 04:29:42,781 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:42,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash -720758835, now seen corresponding path program 1 times [2023-12-16 04:29:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:42,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797814830] [2023-12-16 04:29:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:42,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:43,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:43,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:43,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:43,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:43,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797814830] [2023-12-16 04:29:43,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797814830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:43,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:43,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 04:29:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981936678] [2023-12-16 04:29:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:29:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:29:43,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:29:43,524 INFO L87 Difference]: Start difference. First operand 302 states and 342 transitions. Second operand has 10 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 04:29:43,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:43,978 INFO L93 Difference]: Finished difference Result 593 states and 670 transitions. [2023-12-16 04:29:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 04:29:43,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) Word has length 83 [2023-12-16 04:29:43,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:43,981 INFO L225 Difference]: With dead ends: 593 [2023-12-16 04:29:43,981 INFO L226 Difference]: Without dead ends: 324 [2023-12-16 04:29:43,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2023-12-16 04:29:43,982 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 159 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:43,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 346 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:29:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-16 04:29:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 304. [2023-12-16 04:29:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 273 states have (on average 1.1135531135531136) internal successors, (304), 275 states have internal predecessors, (304), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 04:29:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 344 transitions. [2023-12-16 04:29:44,015 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 344 transitions. Word has length 83 [2023-12-16 04:29:44,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:44,015 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 344 transitions. [2023-12-16 04:29:44,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 10 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 04:29:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 344 transitions. [2023-12-16 04:29:44,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-16 04:29:44,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:29:44,016 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:29:44,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-16 04:29:44,016 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:29:44,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:29:44,016 INFO L85 PathProgramCache]: Analyzing trace with hash -925985177, now seen corresponding path program 1 times [2023-12-16 04:29:44,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:29:44,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142977104] [2023-12-16 04:29:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:29:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:29:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:29:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 04:29:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:44,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 04:29:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:44,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 04:29:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:44,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 04:29:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:44,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 04:29:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-16 04:29:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 04:29:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:29:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-16 04:29:44,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:29:44,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142977104] [2023-12-16 04:29:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142977104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:29:44,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:29:44,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:29:44,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287130801] [2023-12-16 04:29:44,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:29:44,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:29:44,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:29:44,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:29:44,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:29:44,097 INFO L87 Difference]: Start difference. First operand 304 states and 344 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:29:44,184 INFO L93 Difference]: Finished difference Result 565 states and 636 transitions. [2023-12-16 04:29:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:29:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 85 [2023-12-16 04:29:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:29:44,185 INFO L225 Difference]: With dead ends: 565 [2023-12-16 04:29:44,185 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 04:29:44,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 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 04:29:44,189 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 35 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:29:44,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 183 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:29:44,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 04:29:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 04:29:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states 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 04:29:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 04:29:44,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2023-12-16 04:29:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:29:44,191 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 04:29:44,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-16 04:29:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 04:29:44,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 04:29:44,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:29:44,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-16 04:29:44,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-16 04:30:28,990 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-3-4-3-6-17-6-17-6-16-6-15-6-14-6-13-6-7-6-6-6-4-6-4-6-4-6-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-47-6-15-6-16-6-16-6-15-6-14-6-13-6-7-6-5-6-4-6-1 context. [2023-12-16 04:30:28,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 04:30:28,992 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-16 04:30:28,994 INFO L158 Benchmark]: Toolchain (without parser) took 69716.71ms. Allocated memory was 328.2MB in the beginning and 821.0MB in the end (delta: 492.8MB). Free memory was 275.7MB in the beginning and 346.1MB in the end (delta: -70.4MB). Peak memory consumption was 423.0MB. Max. memory is 8.0GB. [2023-12-16 04:30:28,996 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 170.9MB. Free memory was 119.5MB in the beginning and 119.4MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:30:28,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.92ms. Allocated memory is still 328.2MB. Free memory was 275.2MB in the beginning and 261.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 04:30:28,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.80ms. Allocated memory is still 328.2MB. Free memory was 261.0MB in the beginning and 257.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 04:30:28,999 INFO L158 Benchmark]: Boogie Preprocessor took 129.43ms. Allocated memory is still 328.2MB. Free memory was 257.9MB in the beginning and 254.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 04:30:28,999 INFO L158 Benchmark]: RCFGBuilder took 566.22ms. Allocated memory is still 328.2MB. Free memory was 254.8MB in the beginning and 229.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-16 04:30:29,000 INFO L158 Benchmark]: TraceAbstraction took 68623.03ms. Allocated memory was 328.2MB in the beginning and 821.0MB in the end (delta: 492.8MB). Free memory was 228.5MB in the beginning and 346.1MB in the end (delta: -117.6MB). Peak memory consumption was 375.8MB. Max. memory is 8.0GB. [2023-12-16 04:30:29,005 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:30:29,006 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 170.9MB. Free memory was 119.5MB in the beginning and 119.4MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 302.92ms. Allocated memory is still 328.2MB. Free memory was 275.2MB in the beginning and 261.0MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 90.80ms. Allocated memory is still 328.2MB. Free memory was 261.0MB in the beginning and 257.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 129.43ms. Allocated memory is still 328.2MB. Free memory was 257.9MB in the beginning and 254.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 566.22ms. Allocated memory is still 328.2MB. Free memory was 254.8MB in the beginning and 229.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 68623.03ms. Allocated memory was 328.2MB in the beginning and 821.0MB in the end (delta: 492.8MB). Free memory was 228.5MB in the beginning and 346.1MB in the end (delta: -117.6MB). Peak memory consumption was 375.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-2-4-3-5-2-5-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-9-5-3-5-2-5-2-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown