/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-sp_file-62.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 02:44:09,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 02:44:09,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 02:44:09,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 02:44:09,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 02:44:09,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 02:44:09,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 02:44:09,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 02:44:09,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 02:44:09,766 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 02:44:09,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 02:44:09,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 02:44:09,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 02:44:09,768 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 02:44:09,768 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 02:44:09,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 02:44:09,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 02:44:09,769 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 02:44:09,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 02:44:09,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 02:44:09,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 02:44:09,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 02:44:09,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 02:44:09,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 02:44:09,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 02:44:09,771 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 02:44:09,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 02:44:09,771 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 02:44:09,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 02:44:09,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 02:44:09,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 02:44:09,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 02:44:09,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:44:09,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 02:44:09,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 02:44:09,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 02:44:09,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 02:44:09,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 02:44:09,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 02:44:09,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 02:44:09,773 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 02:44:09,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 02:44:09,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 02:44:09,774 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 02:44:09,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 02:44:09,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 02:44:09,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 02:44:09,979 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 02:44:09,979 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 02:44:09,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i [2023-12-21 02:44:10,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 02:44:11,147 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 02:44:11,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-62.i [2023-12-21 02:44:11,155 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4859fc1f1/a5cd9dc398ec46a18cf43fe054d448d7/FLAGa99b3018b [2023-12-21 02:44:11,170 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4859fc1f1/a5cd9dc398ec46a18cf43fe054d448d7 [2023-12-21 02:44:11,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 02:44:11,173 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 02:44:11,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 02:44:11,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 02:44:11,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 02:44:11,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5333af8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11, skipping insertion in model container [2023-12-21 02:44:11,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,205 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 02:44:11,317 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-sp_file-62.i[917,930] [2023-12-21 02:44:11,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:44:11,381 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 02:44:11,392 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-sp_file-62.i[917,930] [2023-12-21 02:44:11,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:44:11,439 INFO L206 MainTranslator]: Completed translation [2023-12-21 02:44:11,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11 WrapperNode [2023-12-21 02:44:11,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 02:44:11,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 02:44:11,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 02:44:11,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 02:44:11,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,496 INFO L138 Inliner]: procedures = 26, calls = 107, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 332 [2023-12-21 02:44:11,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 02:44:11,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 02:44:11,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 02:44:11,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 02:44:11,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,535 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]. [2023-12-21 02:44:11,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 02:44:11,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 02:44:11,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 02:44:11,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 02:44:11,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (1/1) ... [2023-12-21 02:44:11,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:44:11,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:44:11,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 02:44:11,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 02:44:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 02:44:11,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 02:44:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 02:44:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 02:44:11,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 02:44:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 02:44:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 02:44:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 02:44:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 02:44:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 02:44:11,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 02:44:11,685 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 02:44:11,687 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 02:44:11,908 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 02:44:11,956 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 02:44:11,957 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 02:44:11,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:44:11 BoogieIcfgContainer [2023-12-21 02:44:11,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 02:44:11,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 02:44:11,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 02:44:11,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 02:44:11,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:44:11" (1/3) ... [2023-12-21 02:44:11,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc35b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:44:11, skipping insertion in model container [2023-12-21 02:44:11,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:11" (2/3) ... [2023-12-21 02:44:11,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc35b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:44:11, skipping insertion in model container [2023-12-21 02:44:11,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:44:11" (3/3) ... [2023-12-21 02:44:11,963 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-62.i [2023-12-21 02:44:11,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 02:44:11,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 02:44:12,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 02:44:12,024 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;@3bbed4de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 02:44:12,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 02:44:12,027 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) [2023-12-21 02:44:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 02:44:12,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:12,034 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] [2023-12-21 02:44:12,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:12,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:12,038 INFO L85 PathProgramCache]: Analyzing trace with hash -324092677, now seen corresponding path program 1 times [2023-12-21 02:44:12,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342401160] [2023-12-21 02:44:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:12,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:12,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:12,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342401160] [2023-12-21 02:44:12,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342401160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:12,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:12,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 02:44:12,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173747853] [2023-12-21 02:44:12,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:12,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 02:44:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:12,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 02:44:12,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 02:44:12,315 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) [2023-12-21 02:44:12,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:12,352 INFO L93 Difference]: Finished difference Result 129 states and 200 transitions. [2023-12-21 02:44:12,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 02:44:12,354 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 [2023-12-21 02:44:12,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:12,359 INFO L225 Difference]: With dead ends: 129 [2023-12-21 02:44:12,360 INFO L226 Difference]: Without dead ends: 64 [2023-12-21 02:44:12,363 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 [2023-12-21 02:44:12,366 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 [2023-12-21 02:44:12,367 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] [2023-12-21 02:44:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-21 02:44:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-21 02:44:12,395 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) [2023-12-21 02:44:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2023-12-21 02:44:12,399 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 68 [2023-12-21 02:44:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:12,399 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2023-12-21 02:44:12,400 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) [2023-12-21 02:44:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2023-12-21 02:44:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 02:44:12,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:12,404 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] [2023-12-21 02:44:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 02:44:12,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:12,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -384552725, now seen corresponding path program 1 times [2023-12-21 02:44:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:12,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472968178] [2023-12-21 02:44:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:12,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:12,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472968178] [2023-12-21 02:44:12,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472968178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:12,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:12,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:44:12,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945088624] [2023-12-21 02:44:12,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:12,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:44:12,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:12,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:44:12,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:44:12,635 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) [2023-12-21 02:44:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:12,692 INFO L93 Difference]: Finished difference Result 135 states and 194 transitions. [2023-12-21 02:44:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:44:12,693 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 [2023-12-21 02:44:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:12,694 INFO L225 Difference]: With dead ends: 135 [2023-12-21 02:44:12,694 INFO L226 Difference]: Without dead ends: 72 [2023-12-21 02:44:12,695 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 [2023-12-21 02:44:12,695 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 [2023-12-21 02:44:12,696 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] [2023-12-21 02:44:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-21 02:44:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2023-12-21 02:44:12,710 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) [2023-12-21 02:44:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2023-12-21 02:44:12,711 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 68 [2023-12-21 02:44:12,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:12,712 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2023-12-21 02:44:12,712 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) [2023-12-21 02:44:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2023-12-21 02:44:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 02:44:12,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:12,713 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] [2023-12-21 02:44:12,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 02:44:12,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:12,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:12,714 INFO L85 PathProgramCache]: Analyzing trace with hash -327294423, now seen corresponding path program 1 times [2023-12-21 02:44:12,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:12,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603621418] [2023-12-21 02:44:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:12,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:12,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603621418] [2023-12-21 02:44:12,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603621418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:12,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:12,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:44:12,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057516226] [2023-12-21 02:44:12,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:12,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:44:12,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:12,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:44:12,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:44:12,842 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) [2023-12-21 02:44:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:12,882 INFO L93 Difference]: Finished difference Result 135 states and 192 transitions. [2023-12-21 02:44:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:44:12,883 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 [2023-12-21 02:44:12,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:12,885 INFO L225 Difference]: With dead ends: 135 [2023-12-21 02:44:12,886 INFO L226 Difference]: Without dead ends: 70 [2023-12-21 02:44:12,886 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 [2023-12-21 02:44:12,887 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 [2023-12-21 02:44:12,887 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] [2023-12-21 02:44:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-21 02:44:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-12-21 02:44:12,891 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) [2023-12-21 02:44:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2023-12-21 02:44:12,891 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 68 [2023-12-21 02:44:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:12,892 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2023-12-21 02:44:12,892 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) [2023-12-21 02:44:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2023-12-21 02:44:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 02:44:12,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:12,893 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] [2023-12-21 02:44:12,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 02:44:12,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:12,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:12,893 INFO L85 PathProgramCache]: Analyzing trace with hash -327234841, now seen corresponding path program 1 times [2023-12-21 02:44:12,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:12,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176292340] [2023-12-21 02:44:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:12,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:13,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:13,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176292340] [2023-12-21 02:44:13,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176292340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:13,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:13,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:44:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234285504] [2023-12-21 02:44:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:13,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:44:13,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:44:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:44:13,389 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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) [2023-12-21 02:44:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:13,571 INFO L93 Difference]: Finished difference Result 171 states and 240 transitions. [2023-12-21 02:44:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:44:13,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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 [2023-12-21 02:44:13,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:13,574 INFO L225 Difference]: With dead ends: 171 [2023-12-21 02:44:13,574 INFO L226 Difference]: Without dead ends: 104 [2023-12-21 02:44:13,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:44:13,583 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 174 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:44:13,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 168 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:44:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-21 02:44:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 70. [2023-12-21 02:44:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.3666666666666667) internal successors, (82), 60 states have internal predecessors, (82), 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) [2023-12-21 02:44:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2023-12-21 02:44:13,592 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 68 [2023-12-21 02:44:13,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:13,593 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2023-12-21 02:44:13,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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) [2023-12-21 02:44:13,593 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2023-12-21 02:44:13,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 02:44:13,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:13,594 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] [2023-12-21 02:44:13,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 02:44:13,594 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:13,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:13,594 INFO L85 PathProgramCache]: Analyzing trace with hash 948488268, now seen corresponding path program 1 times [2023-12-21 02:44:13,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:13,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334294959] [2023-12-21 02:44:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:13,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:13,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:13,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334294959] [2023-12-21 02:44:13,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334294959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:13,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:13,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:44:13,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529247478] [2023-12-21 02:44:13,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:13,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:44:13,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:44:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:44:13,852 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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) [2023-12-21 02:44:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:14,091 INFO L93 Difference]: Finished difference Result 205 states and 286 transitions. [2023-12-21 02:44:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 02:44:14,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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 [2023-12-21 02:44:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:14,093 INFO L225 Difference]: With dead ends: 205 [2023-12-21 02:44:14,093 INFO L226 Difference]: Without dead ends: 136 [2023-12-21 02:44:14,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:44:14,094 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 339 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:44:14,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 369 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:44:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-21 02:44:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 80. [2023-12-21 02:44:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 70 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) [2023-12-21 02:44:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 112 transitions. [2023-12-21 02:44:14,100 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 112 transitions. Word has length 70 [2023-12-21 02:44:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:14,102 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 112 transitions. [2023-12-21 02:44:14,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 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) [2023-12-21 02:44:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 112 transitions. [2023-12-21 02:44:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 02:44:14,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:14,107 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] [2023-12-21 02:44:14,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 02:44:14,107 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:14,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:14,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1383606130, now seen corresponding path program 1 times [2023-12-21 02:44:14,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:14,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284689694] [2023-12-21 02:44:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:14,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:14,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:14,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284689694] [2023-12-21 02:44:14,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284689694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:14,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:14,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:44:14,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355134733] [2023-12-21 02:44:14,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:14,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:44:14,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:44:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:44:14,509 INFO L87 Difference]: Start difference. First operand 80 states and 112 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2023-12-21 02:44:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:14,675 INFO L93 Difference]: Finished difference Result 160 states and 224 transitions. [2023-12-21 02:44:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:44:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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 70 [2023-12-21 02:44:14,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:14,677 INFO L225 Difference]: With dead ends: 160 [2023-12-21 02:44:14,677 INFO L226 Difference]: Without dead ends: 81 [2023-12-21 02:44:14,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:44:14,678 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 192 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:44:14,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 105 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:44:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-21 02:44:14,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2023-12-21 02:44:14,685 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) [2023-12-21 02:44:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2023-12-21 02:44:14,685 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 109 transitions. Word has length 70 [2023-12-21 02:44:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:14,686 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 109 transitions. [2023-12-21 02:44:14,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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) [2023-12-21 02:44:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 109 transitions. [2023-12-21 02:44:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 02:44:14,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:14,687 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] [2023-12-21 02:44:14,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 02:44:14,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:14,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash -628950047, now seen corresponding path program 1 times [2023-12-21 02:44:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:14,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639897839] [2023-12-21 02:44:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:14,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:14,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639897839] [2023-12-21 02:44:14,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639897839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:14,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:14,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:44:14,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3581731] [2023-12-21 02:44:14,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:14,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:44:14,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:44:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:44:14,776 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) [2023-12-21 02:44:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:14,815 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2023-12-21 02:44:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:44:14,815 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 [2023-12-21 02:44:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:14,816 INFO L225 Difference]: With dead ends: 171 [2023-12-21 02:44:14,816 INFO L226 Difference]: Without dead ends: 94 [2023-12-21 02:44:14,816 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 [2023-12-21 02:44:14,817 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 [2023-12-21 02:44:14,817 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] [2023-12-21 02:44:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-21 02:44:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2023-12-21 02:44:14,823 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) [2023-12-21 02:44:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2023-12-21 02:44:14,824 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 72 [2023-12-21 02:44:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:14,824 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2023-12-21 02:44:14,824 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) [2023-12-21 02:44:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2023-12-21 02:44:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 02:44:14,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:14,825 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] [2023-12-21 02:44:14,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 02:44:14,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:14,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:14,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1455457008, now seen corresponding path program 1 times [2023-12-21 02:44:14,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:14,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584891710] [2023-12-21 02:44:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:14,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:15,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584891710] [2023-12-21 02:44:15,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584891710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:15,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:15,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:44:15,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561253756] [2023-12-21 02:44:15,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:15,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:44:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:15,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:44:15,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:44:15,209 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2023-12-21 02:44:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:15,439 INFO L93 Difference]: Finished difference Result 221 states and 302 transitions. [2023-12-21 02:44:15,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:44:15,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 72 [2023-12-21 02:44:15,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:15,440 INFO L225 Difference]: With dead ends: 221 [2023-12-21 02:44:15,440 INFO L226 Difference]: Without dead ends: 141 [2023-12-21 02:44:15,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:44:15,442 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 413 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:44:15,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 197 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:44:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-21 02:44:15,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 81. [2023-12-21 02:44:15,452 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) [2023-12-21 02:44:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 111 transitions. [2023-12-21 02:44:15,452 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 111 transitions. Word has length 72 [2023-12-21 02:44:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:15,452 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 111 transitions. [2023-12-21 02:44:15,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2023-12-21 02:44:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 111 transitions. [2023-12-21 02:44:15,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 02:44:15,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:15,453 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] [2023-12-21 02:44:15,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 02:44:15,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:15,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:15,454 INFO L85 PathProgramCache]: Analyzing trace with hash 94187031, now seen corresponding path program 1 times [2023-12-21 02:44:15,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:15,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961161068] [2023-12-21 02:44:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:15,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:15,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:15,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961161068] [2023-12-21 02:44:15,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961161068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:15,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:15,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:44:15,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628450391] [2023-12-21 02:44:15,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:15,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:44:15,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:15,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:44:15,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:44:15,771 INFO L87 Difference]: Start difference. First operand 81 states and 111 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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) [2023-12-21 02:44:16,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:16,066 INFO L93 Difference]: Finished difference Result 229 states and 311 transitions. [2023-12-21 02:44:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 02:44:16,067 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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 72 [2023-12-21 02:44:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:16,067 INFO L225 Difference]: With dead ends: 229 [2023-12-21 02:44:16,067 INFO L226 Difference]: Without dead ends: 149 [2023-12-21 02:44:16,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:44:16,069 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 280 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:44:16,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 370 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:44:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-21 02:44:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 84. [2023-12-21 02:44:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 74 states have (on average 1.337837837837838) internal successors, (99), 74 states have internal predecessors, (99), 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) [2023-12-21 02:44:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 115 transitions. [2023-12-21 02:44:16,095 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 115 transitions. Word has length 72 [2023-12-21 02:44:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:16,095 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 115 transitions. [2023-12-21 02:44:16,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 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) [2023-12-21 02:44:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 115 transitions. [2023-12-21 02:44:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 02:44:16,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:16,095 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] [2023-12-21 02:44:16,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 02:44:16,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:16,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1419567270, now seen corresponding path program 1 times [2023-12-21 02:44:16,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:16,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608066327] [2023-12-21 02:44:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:16,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:16,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:16,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608066327] [2023-12-21 02:44:16,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608066327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:16,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:16,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:44:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203673836] [2023-12-21 02:44:16,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:16,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:44:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:44:16,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:44:16,469 INFO L87 Difference]: Start difference. First operand 84 states and 115 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2023-12-21 02:44:16,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:16,762 INFO L93 Difference]: Finished difference Result 235 states and 319 transitions. [2023-12-21 02:44:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:44:16,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 72 [2023-12-21 02:44:16,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:16,763 INFO L225 Difference]: With dead ends: 235 [2023-12-21 02:44:16,763 INFO L226 Difference]: Without dead ends: 152 [2023-12-21 02:44:16,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:44:16,764 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 159 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:44:16,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 347 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:44:16,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-21 02:44:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 87. [2023-12-21 02:44:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 77 states have internal predecessors, (102), 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) [2023-12-21 02:44:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions. [2023-12-21 02:44:16,771 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 72 [2023-12-21 02:44:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:16,772 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions. [2023-12-21 02:44:16,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2023-12-21 02:44:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions. [2023-12-21 02:44:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 02:44:16,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:16,772 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] [2023-12-21 02:44:16,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 02:44:16,772 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:16,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1469107187, now seen corresponding path program 1 times [2023-12-21 02:44:16,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:16,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074170038] [2023-12-21 02:44:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:16,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:16,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074170038] [2023-12-21 02:44:16,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074170038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:16,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:16,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:44:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618545458] [2023-12-21 02:44:16,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:16,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:44:16,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:16,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:44:16,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:44:16,855 INFO L87 Difference]: Start difference. First operand 87 states and 118 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) [2023-12-21 02:44:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:16,919 INFO L93 Difference]: Finished difference Result 203 states and 276 transitions. [2023-12-21 02:44:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:44:16,920 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 [2023-12-21 02:44:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:16,921 INFO L225 Difference]: With dead ends: 203 [2023-12-21 02:44:16,921 INFO L226 Difference]: Without dead ends: 117 [2023-12-21 02:44:16,921 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 [2023-12-21 02:44:16,922 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 [2023-12-21 02:44:16,922 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] [2023-12-21 02:44:16,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-21 02:44:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2023-12-21 02:44:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 78 states have internal predecessors, (103), 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) [2023-12-21 02:44:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 119 transitions. [2023-12-21 02:44:16,929 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 119 transitions. Word has length 74 [2023-12-21 02:44:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:16,930 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 119 transitions. [2023-12-21 02:44:16,930 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) [2023-12-21 02:44:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 119 transitions. [2023-12-21 02:44:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 02:44:16,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:16,930 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] [2023-12-21 02:44:16,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 02:44:16,931 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:16,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:16,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1379444614, now seen corresponding path program 1 times [2023-12-21 02:44:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:16,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156702973] [2023-12-21 02:44:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:17,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:17,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-21 02:44:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:17,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156702973] [2023-12-21 02:44:17,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156702973] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:44:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916141477] [2023-12-21 02:44:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:17,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:44:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:44:17,975 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) [2023-12-21 02:44:17,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 02:44:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:18,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-21 02:44:18,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:44:19,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:44:19,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 13 [2023-12-21 02:44:20,541 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 0 case distinctions, treesize of input 45 treesize of output 35 [2023-12-21 02:44:20,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 43 [2023-12-21 02:44:20,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2023-12-21 02:44:20,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:20,858 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 68 treesize of output 60 [2023-12-21 02:44:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 02:44:21,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:44:30,289 WARN L854 $PredicateComparison]: unable to prove that (forall ((~WrapperStruct00_var_1_4_Pointer~0.offset Int) (v_ArrVal_244 Int) (v_ArrVal_243 Int) (~WrapperStruct00_var_1_4_Pointer~0.base Int) (~last_1_WrapperStruct00_var_1_1~0 Int)) (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_int#1| c_~WrapperStruct00_var_1_7_Pointer~0.base (store (select |c_#memory_int#1| c_~WrapperStruct00_var_1_7_Pointer~0.base) c_~WrapperStruct00_var_1_7_Pointer~0.offset (+ (* (- 1) (mod (select (select |c_#memory_int#1| c_~WrapperStruct00_var_1_6_Pointer~0.base) c_~WrapperStruct00_var_1_6_Pointer~0.offset) 256)) (select (select |c_#memory_int#1| c_~WrapperStruct00_var_1_8_Pointer~0.base) c_~WrapperStruct00_var_1_8_Pointer~0.offset) (* (- 1) ~last_1_WrapperStruct00_var_1_1~0)))))) (store .cse6 c_~WrapperStruct00_var_1_10_Pointer~0.base (store (select .cse6 c_~WrapperStruct00_var_1_10_Pointer~0.base) c_~WrapperStruct00_var_1_10_Pointer~0.offset v_ArrVal_244))))) (store .cse5 c_~WrapperStruct00_var_1_1_Pointer~0.base (store (select .cse5 c_~WrapperStruct00_var_1_1_Pointer~0.base) c_~WrapperStruct00_var_1_1_Pointer~0.offset v_ArrVal_243))))) (store .cse4 c_~WrapperStruct00_var_1_2_Pointer~0.base (store (select .cse4 c_~WrapperStruct00_var_1_2_Pointer~0.base) c_~WrapperStruct00_var_1_2_Pointer~0.offset 4))))) (let ((.cse2 (select (select .cse3 c_~WrapperStruct00_var_1_8_Pointer~0.base) c_~WrapperStruct00_var_1_8_Pointer~0.offset))) (let ((.cse1 (store .cse3 c_~WrapperStruct00_var_1_9_Pointer~0.base (store (select .cse3 c_~WrapperStruct00_var_1_9_Pointer~0.base) c_~WrapperStruct00_var_1_9_Pointer~0.offset .cse2)))) (let ((.cse0 (select (select .cse1 ~WrapperStruct00_var_1_4_Pointer~0.base) ~WrapperStruct00_var_1_4_Pointer~0.offset))) (or (< 254 .cse0) (< (select (select .cse1 c_~WrapperStruct00_var_1_8_Pointer~0.base) c_~WrapperStruct00_var_1_8_Pointer~0.offset) (+ ~last_1_WrapperStruct00_var_1_1~0 (select (select .cse1 c_~WrapperStruct00_var_1_7_Pointer~0.base) c_~WrapperStruct00_var_1_7_Pointer~0.offset))) (< .cse0 .cse2))))))) is different from false [2023-12-21 02:44:30,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916141477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:44:30,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 02:44:30,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 30 [2023-12-21 02:44:30,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370597985] [2023-12-21 02:44:30,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 02:44:30,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 02:44:30,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:30,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 02:44:30,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1505, Unknown=2, NotChecked=78, Total=1722 [2023-12-21 02:44:30,342 INFO L87 Difference]: Start difference. First operand 88 states and 119 transitions. Second operand has 30 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 7 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-21 02:44:35,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:35,694 INFO L93 Difference]: Finished difference Result 730 states and 941 transitions. [2023-12-21 02:44:35,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 02:44:35,694 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 7 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 74 [2023-12-21 02:44:35,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:35,698 INFO L225 Difference]: With dead ends: 730 [2023-12-21 02:44:35,698 INFO L226 Difference]: Without dead ends: 643 [2023-12-21 02:44:35,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=933, Invalid=6041, Unknown=2, NotChecked=164, Total=7140 [2023-12-21 02:44:35,700 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 2710 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 02:44:35,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2715 Valid, 1273 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 02:44:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-21 02:44:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 278. [2023-12-21 02:44:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 251 states have (on average 1.2868525896414342) internal successors, (323), 252 states have internal predecessors, (323), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:44:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 363 transitions. [2023-12-21 02:44:35,720 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 363 transitions. Word has length 74 [2023-12-21 02:44:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:35,720 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 363 transitions. [2023-12-21 02:44:35,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.888888888888889) internal successors, (78), 27 states have internal predecessors, (78), 7 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-21 02:44:35,721 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 363 transitions. [2023-12-21 02:44:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 02:44:35,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:35,721 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] [2023-12-21 02:44:35,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 02:44:35,927 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,SelfDestructingSolverStorable11 [2023-12-21 02:44:35,927 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:35,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:35,928 INFO L85 PathProgramCache]: Analyzing trace with hash 810721787, now seen corresponding path program 1 times [2023-12-21 02:44:35,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:35,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432425640] [2023-12-21 02:44:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:35,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:36,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432425640] [2023-12-21 02:44:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432425640] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:36,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:36,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:44:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911266875] [2023-12-21 02:44:36,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:36,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:44:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:44:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:44:36,185 INFO L87 Difference]: Start difference. First operand 278 states and 363 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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) [2023-12-21 02:44:36,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:36,461 INFO L93 Difference]: Finished difference Result 700 states and 910 transitions. [2023-12-21 02:44:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:44:36,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 [2023-12-21 02:44:36,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:36,466 INFO L225 Difference]: With dead ends: 700 [2023-12-21 02:44:36,466 INFO L226 Difference]: Without dead ends: 417 [2023-12-21 02:44:36,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:44:36,467 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 166 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:44:36,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 291 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:44:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-21 02:44:36,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 275. [2023-12-21 02:44:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 248 states have (on average 1.2701612903225807) internal successors, (315), 249 states have internal predecessors, (315), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:44:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 355 transitions. [2023-12-21 02:44:36,499 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 355 transitions. Word has length 74 [2023-12-21 02:44:36,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:36,499 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 355 transitions. [2023-12-21 02:44:36,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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) [2023-12-21 02:44:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 355 transitions. [2023-12-21 02:44:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 02:44:36,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:36,502 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] [2023-12-21 02:44:36,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 02:44:36,502 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:36,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1104155446, now seen corresponding path program 1 times [2023-12-21 02:44:36,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:36,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205947204] [2023-12-21 02:44:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:36,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:44:36,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:36,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205947204] [2023-12-21 02:44:36,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205947204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:44:36,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:44:36,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:44:36,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999337888] [2023-12-21 02:44:36,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:44:36,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:44:36,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:44:36,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:44:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:44:36,848 INFO L87 Difference]: Start difference. First operand 275 states and 355 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2023-12-21 02:44:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:44:37,253 INFO L93 Difference]: Finished difference Result 736 states and 954 transitions. [2023-12-21 02:44:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:44:37,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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 74 [2023-12-21 02:44:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:44:37,256 INFO L225 Difference]: With dead ends: 736 [2023-12-21 02:44:37,257 INFO L226 Difference]: Without dead ends: 462 [2023-12-21 02:44:37,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:44:37,258 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 245 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:44:37,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 270 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:44:37,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-21 02:44:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 295. [2023-12-21 02:44:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 268 states have (on average 1.2649253731343284) internal successors, (339), 269 states have internal predecessors, (339), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:44:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 379 transitions. [2023-12-21 02:44:37,289 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 379 transitions. Word has length 74 [2023-12-21 02:44:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:44:37,289 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 379 transitions. [2023-12-21 02:44:37,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2023-12-21 02:44:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 379 transitions. [2023-12-21 02:44:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 02:44:37,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:44:37,290 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] [2023-12-21 02:44:37,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 02:44:37,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:44:37,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:44:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash -93038196, now seen corresponding path program 1 times [2023-12-21 02:44:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:44:37,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855566851] [2023-12-21 02:44:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:44:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:44:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:44:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:44:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:44:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:44:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:44:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:44:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:44:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-21 02:44:38,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:44:38,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855566851] [2023-12-21 02:44:38,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855566851] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:44:38,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412066559] [2023-12-21 02:44:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:44:38,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:44:38,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:44:38,359 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) [2023-12-21 02:44:38,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 02:44:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:44:38,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 02:44:38,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:44:39,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:39,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 73 treesize of output 49 [2023-12-21 02:44:39,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:39,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:39,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:39,244 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-12-21 02:44:39,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 62 [2023-12-21 02:44:39,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:44:39,555 INFO L349 Elim1Store]: treesize reduction 8, result has 89.0 percent of original size [2023-12-21 02:44:39,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 102 treesize of output 122 [2023-12-21 02:44:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-21 02:44:39,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:45:42,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:45:42,989 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 2393 treesize of output 1958 [2023-12-21 02:45:48,283 INFO L349 Elim1Store]: treesize reduction 57, result has 1.7 percent of original size [2023-12-21 02:45:48,283 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 1466 treesize of output 1 [2023-12-21 02:45:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:45:56,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412066559] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:45:56,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 02:45:56,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13, 12] total 31 [2023-12-21 02:45:56,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85343828] [2023-12-21 02:45:56,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:45:56,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:45:56,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:45:56,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:45:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=827, Unknown=15, NotChecked=0, Total=930 [2023-12-21 02:45:56,692 INFO L87 Difference]: Start difference. First operand 295 states and 379 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2023-12-21 02:46:08,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-21 02:46:12,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:12,160 INFO L93 Difference]: Finished difference Result 677 states and 871 transitions. [2023-12-21 02:46:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:46:12,163 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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 [2023-12-21 02:46:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:12,165 INFO L225 Difference]: With dead ends: 677 [2023-12-21 02:46:12,165 INFO L226 Difference]: Without dead ends: 383 [2023-12-21 02:46:12,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 80.8s TimeCoverageRelationStatistics Valid=177, Invalid=1367, Unknown=16, NotChecked=0, Total=1560 [2023-12-21 02:46:12,170 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 363 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:12,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 520 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-21 02:46:12,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-21 02:46:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 298. [2023-12-21 02:46:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 271 states have (on average 1.2619926199261993) internal successors, (342), 272 states have internal predecessors, (342), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 382 transitions. [2023-12-21 02:46:12,205 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 382 transitions. Word has length 74 [2023-12-21 02:46:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:12,205 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 382 transitions. [2023-12-21 02:46:12,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2023-12-21 02:46:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 382 transitions. [2023-12-21 02:46:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 02:46:12,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:12,207 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] [2023-12-21 02:46:12,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 02:46:12,412 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,SelfDestructingSolverStorable14 [2023-12-21 02:46:12,412 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:12,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1829541873, now seen corresponding path program 1 times [2023-12-21 02:46:12,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:12,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091394246] [2023-12-21 02:46:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:12,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:12,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:12,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:12,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:12,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:46:12,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091394246] [2023-12-21 02:46:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091394246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:46:12,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:46:12,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:46:12,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944400005] [2023-12-21 02:46:12,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:46:12,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:46:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:46:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:46:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:46:12,780 INFO L87 Difference]: Start difference. First operand 298 states and 382 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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) [2023-12-21 02:46:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:13,028 INFO L93 Difference]: Finished difference Result 545 states and 700 transitions. [2023-12-21 02:46:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:46:13,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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 74 [2023-12-21 02:46:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:13,030 INFO L225 Difference]: With dead ends: 545 [2023-12-21 02:46:13,030 INFO L226 Difference]: Without dead ends: 375 [2023-12-21 02:46:13,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:46:13,031 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 178 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:13,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 216 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:46:13,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-21 02:46:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 291. [2023-12-21 02:46:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 264 states have (on average 1.25) internal successors, (330), 265 states have internal predecessors, (330), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 370 transitions. [2023-12-21 02:46:13,062 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 370 transitions. Word has length 74 [2023-12-21 02:46:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:13,062 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 370 transitions. [2023-12-21 02:46:13,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 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) [2023-12-21 02:46:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 370 transitions. [2023-12-21 02:46:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 02:46:13,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:13,063 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] [2023-12-21 02:46:13,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 02:46:13,064 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:13,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash -681453620, now seen corresponding path program 1 times [2023-12-21 02:46:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:13,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266437239] [2023-12-21 02:46:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-21 02:46:14,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:14,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266437239] [2023-12-21 02:46:14,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266437239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:46:14,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347884253] [2023-12-21 02:46:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:14,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:46:14,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:46:14,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:46:14,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 02:46:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:14,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 02:46:14,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:46:15,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:46:15,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 41 [2023-12-21 02:46:15,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:46:15,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:46:15,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:46:15,419 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-12-21 02:46:15,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 54 [2023-12-21 02:46:15,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:46:15,734 INFO L349 Elim1Store]: treesize reduction 8, result has 89.0 percent of original size [2023-12-21 02:46:15,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 92 treesize of output 112 [2023-12-21 02:46:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-21 02:46:16,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:46:40,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:46:40,464 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 2564 treesize of output 2201 [2023-12-21 02:46:41,132 INFO L349 Elim1Store]: treesize reduction 57, result has 1.7 percent of original size [2023-12-21 02:46:41,132 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 2510 treesize of output 1 [2023-12-21 02:46:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:46:45,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347884253] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:46:45,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 02:46:45,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12, 12] total 29 [2023-12-21 02:46:45,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624648237] [2023-12-21 02:46:45,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:46:45,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:46:45,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:46:45,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:46:45,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=727, Unknown=5, NotChecked=0, Total=812 [2023-12-21 02:46:45,345 INFO L87 Difference]: Start difference. First operand 291 states and 370 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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) [2023-12-21 02:46:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:53,738 INFO L93 Difference]: Finished difference Result 735 states and 941 transitions. [2023-12-21 02:46:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 02:46:53,752 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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 [2023-12-21 02:46:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:53,755 INFO L225 Difference]: With dead ends: 735 [2023-12-21 02:46:53,755 INFO L226 Difference]: Without dead ends: 445 [2023-12-21 02:46:53,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=182, Invalid=1373, Unknown=5, NotChecked=0, Total=1560 [2023-12-21 02:46:53,757 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 343 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:53,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 536 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 02:46:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-21 02:46:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 291. [2023-12-21 02:46:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 264 states have (on average 1.25) internal successors, (330), 265 states have internal predecessors, (330), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 370 transitions. [2023-12-21 02:46:53,784 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 370 transitions. Word has length 74 [2023-12-21 02:46:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:53,784 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 370 transitions. [2023-12-21 02:46:53,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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) [2023-12-21 02:46:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 370 transitions. [2023-12-21 02:46:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 02:46:53,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:53,785 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] [2023-12-21 02:46:53,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 02:46:53,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:46:53,992 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:53,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash 329663630, now seen corresponding path program 1 times [2023-12-21 02:46:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:53,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409052743] [2023-12-21 02:46:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:46:54,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:54,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409052743] [2023-12-21 02:46:54,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409052743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:46:54,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:46:54,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:46:54,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779355281] [2023-12-21 02:46:54,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:46:54,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:46:54,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:46:54,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:46:54,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:46:54,297 INFO L87 Difference]: Start difference. First operand 291 states and 370 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2023-12-21 02:46:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:54,625 INFO L93 Difference]: Finished difference Result 656 states and 834 transitions. [2023-12-21 02:46:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:46:54,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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 74 [2023-12-21 02:46:54,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:54,627 INFO L225 Difference]: With dead ends: 656 [2023-12-21 02:46:54,627 INFO L226 Difference]: Without dead ends: 366 [2023-12-21 02:46:54,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:46:54,628 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 152 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:54,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 308 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:46:54,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-12-21 02:46:54,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 279. [2023-12-21 02:46:54,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 252 states have (on average 1.2380952380952381) internal successors, (312), 253 states have internal predecessors, (312), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 352 transitions. [2023-12-21 02:46:54,648 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 352 transitions. Word has length 74 [2023-12-21 02:46:54,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:54,648 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 352 transitions. [2023-12-21 02:46:54,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 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) [2023-12-21 02:46:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 352 transitions. [2023-12-21 02:46:54,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 02:46:54,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:54,650 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] [2023-12-21 02:46:54,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 02:46:54,650 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:54,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:54,650 INFO L85 PathProgramCache]: Analyzing trace with hash 92809267, now seen corresponding path program 1 times [2023-12-21 02:46:54,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:54,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566980596] [2023-12-21 02:46:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:54,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:46:54,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566980596] [2023-12-21 02:46:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566980596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:46:54,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:46:54,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:46:54,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157342972] [2023-12-21 02:46:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:46:54,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:46:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:46:54,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:46:54,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:46:54,730 INFO L87 Difference]: Start difference. First operand 279 states and 352 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) [2023-12-21 02:46:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:54,879 INFO L93 Difference]: Finished difference Result 673 states and 847 transitions. [2023-12-21 02:46:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:46:54,879 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 [2023-12-21 02:46:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:54,881 INFO L225 Difference]: With dead ends: 673 [2023-12-21 02:46:54,881 INFO L226 Difference]: Without dead ends: 395 [2023-12-21 02:46:54,881 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 [2023-12-21 02:46:54,881 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 67 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:54,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 305 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:46:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-12-21 02:46:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 295. [2023-12-21 02:46:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 268 states have (on average 1.2201492537313432) internal successors, (327), 269 states have internal predecessors, (327), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 367 transitions. [2023-12-21 02:46:54,902 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 367 transitions. Word has length 75 [2023-12-21 02:46:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:54,902 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 367 transitions. [2023-12-21 02:46:54,902 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) [2023-12-21 02:46:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 367 transitions. [2023-12-21 02:46:54,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 02:46:54,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:54,903 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] [2023-12-21 02:46:54,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 02:46:54,903 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:54,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1012118072, now seen corresponding path program 1 times [2023-12-21 02:46:54,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:54,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804535674] [2023-12-21 02:46:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:54,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:46:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:54,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804535674] [2023-12-21 02:46:54,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804535674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:46:54,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:46:54,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:46:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056392407] [2023-12-21 02:46:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:46:54,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:46:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:46:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:46:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:46:54,976 INFO L87 Difference]: Start difference. First operand 295 states and 367 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 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) [2023-12-21 02:46:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:55,098 INFO L93 Difference]: Finished difference Result 625 states and 778 transitions. [2023-12-21 02:46:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:46:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 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 [2023-12-21 02:46:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:55,101 INFO L225 Difference]: With dead ends: 625 [2023-12-21 02:46:55,101 INFO L226 Difference]: Without dead ends: 331 [2023-12-21 02:46:55,102 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 [2023-12-21 02:46:55,102 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 65 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:55,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 228 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:46:55,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-21 02:46:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 279. [2023-12-21 02:46:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 252 states have (on average 1.1984126984126984) internal successors, (302), 253 states have internal predecessors, (302), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:55,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 342 transitions. [2023-12-21 02:46:55,129 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 342 transitions. Word has length 76 [2023-12-21 02:46:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:55,129 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 342 transitions. [2023-12-21 02:46:55,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 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) [2023-12-21 02:46:55,129 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 342 transitions. [2023-12-21 02:46:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 02:46:55,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:55,130 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] [2023-12-21 02:46:55,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 02:46:55,130 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:55,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1073054539, now seen corresponding path program 1 times [2023-12-21 02:46:55,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:55,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545561588] [2023-12-21 02:46:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:55,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:55,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:55,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:55,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:55,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:55,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:55,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:46:55,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545561588] [2023-12-21 02:46:55,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545561588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:46:55,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:46:55,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:46:55,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246948587] [2023-12-21 02:46:55,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:46:55,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:46:55,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:46:55,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:46:55,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:46:55,861 INFO L87 Difference]: Start difference. First operand 279 states and 342 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 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) [2023-12-21 02:46:56,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:56,385 INFO L93 Difference]: Finished difference Result 745 states and 904 transitions. [2023-12-21 02:46:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:46:56,385 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), 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 76 [2023-12-21 02:46:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:56,387 INFO L225 Difference]: With dead ends: 745 [2023-12-21 02:46:56,387 INFO L226 Difference]: Without dead ends: 436 [2023-12-21 02:46:56,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:46:56,388 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 277 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:56,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 238 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:46:56,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-12-21 02:46:56,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 378. [2023-12-21 02:46:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 351 states have (on average 1.188034188034188) internal successors, (417), 352 states have internal predecessors, (417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 457 transitions. [2023-12-21 02:46:56,411 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 457 transitions. Word has length 76 [2023-12-21 02:46:56,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:56,412 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 457 transitions. [2023-12-21 02:46:56,412 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), 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) [2023-12-21 02:46:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 457 transitions. [2023-12-21 02:46:56,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 02:46:56,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:56,412 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] [2023-12-21 02:46:56,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 02:46:56,413 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:56,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1800265925, now seen corresponding path program 1 times [2023-12-21 02:46:56,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221327905] [2023-12-21 02:46:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:46:56,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:56,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221327905] [2023-12-21 02:46:56,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221327905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:46:56,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:46:56,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:46:56,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133900868] [2023-12-21 02:46:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:46:56,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:46:56,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:46:56,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:46:56,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:46:56,673 INFO L87 Difference]: Start difference. First operand 378 states and 457 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 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) [2023-12-21 02:46:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:56,842 INFO L93 Difference]: Finished difference Result 641 states and 778 transitions. [2023-12-21 02:46:56,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:46:56,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 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 [2023-12-21 02:46:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:56,855 INFO L225 Difference]: With dead ends: 641 [2023-12-21 02:46:56,855 INFO L226 Difference]: Without dead ends: 418 [2023-12-21 02:46:56,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:46:56,857 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 196 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:56,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 175 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:46:56,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-21 02:46:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 378. [2023-12-21 02:46:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 351 states have (on average 1.1851851851851851) internal successors, (416), 352 states have internal predecessors, (416), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 456 transitions. [2023-12-21 02:46:56,880 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 456 transitions. Word has length 76 [2023-12-21 02:46:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:56,880 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 456 transitions. [2023-12-21 02:46:56,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 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) [2023-12-21 02:46:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 456 transitions. [2023-12-21 02:46:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 02:46:56,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:56,881 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] [2023-12-21 02:46:56,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 02:46:56,881 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:56,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:56,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1491109967, now seen corresponding path program 1 times [2023-12-21 02:46:56,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:56,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207288217] [2023-12-21 02:46:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:46:57,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:57,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207288217] [2023-12-21 02:46:57,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207288217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:46:57,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:46:57,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:46:57,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177160202] [2023-12-21 02:46:57,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:46:57,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:46:57,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:46:57,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:46:57,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:46:57,001 INFO L87 Difference]: Start difference. First operand 378 states and 456 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) [2023-12-21 02:46:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:57,144 INFO L93 Difference]: Finished difference Result 886 states and 1072 transitions. [2023-12-21 02:46:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:46:57,144 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 [2023-12-21 02:46:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:57,146 INFO L225 Difference]: With dead ends: 886 [2023-12-21 02:46:57,146 INFO L226 Difference]: Without dead ends: 509 [2023-12-21 02:46:57,146 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 [2023-12-21 02:46:57,147 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 62 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:57,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 257 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:46:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-12-21 02:46:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 410. [2023-12-21 02:46:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 383 states have (on average 1.1697127937336815) internal successors, (448), 384 states have internal predecessors, (448), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:57,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 488 transitions. [2023-12-21 02:46:57,170 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 488 transitions. Word has length 77 [2023-12-21 02:46:57,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:57,170 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 488 transitions. [2023-12-21 02:46:57,170 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) [2023-12-21 02:46:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 488 transitions. [2023-12-21 02:46:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 02:46:57,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:57,171 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] [2023-12-21 02:46:57,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 02:46:57,171 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:57,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1989332603, now seen corresponding path program 1 times [2023-12-21 02:46:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:57,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451837781] [2023-12-21 02:46:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:57,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:46:57,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:57,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451837781] [2023-12-21 02:46:57,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451837781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:46:57,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:46:57,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:46:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049986971] [2023-12-21 02:46:57,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:46:57,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:46:57,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:46:57,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:46:57,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:46:57,260 INFO L87 Difference]: Start difference. First operand 410 states and 488 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) [2023-12-21 02:46:57,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:46:57,406 INFO L93 Difference]: Finished difference Result 915 states and 1091 transitions. [2023-12-21 02:46:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:46:57,407 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 [2023-12-21 02:46:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:46:57,408 INFO L225 Difference]: With dead ends: 915 [2023-12-21 02:46:57,408 INFO L226 Difference]: Without dead ends: 494 [2023-12-21 02:46:57,409 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 [2023-12-21 02:46:57,412 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 77 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:46:57,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 308 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:46:57,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-21 02:46:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 398. [2023-12-21 02:46:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 371 states have (on average 1.1644204851752022) internal successors, (432), 372 states have internal predecessors, (432), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:46:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 472 transitions. [2023-12-21 02:46:57,440 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 472 transitions. Word has length 77 [2023-12-21 02:46:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:46:57,440 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 472 transitions. [2023-12-21 02:46:57,440 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) [2023-12-21 02:46:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 472 transitions. [2023-12-21 02:46:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 02:46:57,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:46:57,441 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] [2023-12-21 02:46:57,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 02:46:57,442 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:46:57,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:46:57,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2145573999, now seen corresponding path program 1 times [2023-12-21 02:46:57,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:46:57,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741769215] [2023-12-21 02:46:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:57,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:46:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:46:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:46:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:46:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:58,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:46:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:46:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:58,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:46:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:59,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:46:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:59,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:46:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-21 02:46:59,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:46:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741769215] [2023-12-21 02:46:59,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741769215] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:46:59,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695231455] [2023-12-21 02:46:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:46:59,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:46:59,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:46:59,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:46:59,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 02:46:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:46:59,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-21 02:46:59,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:46:59,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:47:00,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-12-21 02:47:01,305 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 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-21 02:47:02,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2023-12-21 02:47:02,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 53 [2023-12-21 02:47:02,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,372 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 60 [2023-12-21 02:47:02,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:47:02,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2023-12-21 02:47:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 51 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 02:47:02,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:47:13,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695231455] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:47:13,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 02:47:13,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 28 [2023-12-21 02:47:13,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43051023] [2023-12-21 02:47:13,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 02:47:13,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 02:47:13,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:47:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 02:47:13,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1425, Unknown=2, NotChecked=0, Total=1560 [2023-12-21 02:47:13,640 INFO L87 Difference]: Start difference. First operand 398 states and 472 transitions. Second operand has 28 states, 23 states have (on average 3.217391304347826) internal successors, (74), 25 states have internal predecessors, (74), 11 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (16), 8 states have call predecessors, (16), 11 states have call successors, (16) [2023-12-21 02:47:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:47:18,217 INFO L93 Difference]: Finished difference Result 954 states and 1136 transitions. [2023-12-21 02:47:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-21 02:47:18,228 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 3.217391304347826) internal successors, (74), 25 states have internal predecessors, (74), 11 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (16), 8 states have call predecessors, (16), 11 states have call successors, (16) Word has length 77 [2023-12-21 02:47:18,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:47:18,230 INFO L225 Difference]: With dead ends: 954 [2023-12-21 02:47:18,230 INFO L226 Difference]: Without dead ends: 557 [2023-12-21 02:47:18,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=808, Invalid=5352, Unknown=2, NotChecked=0, Total=6162 [2023-12-21 02:47:18,232 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1070 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:47:18,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 788 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 02:47:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-21 02:47:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 194. [2023-12-21 02:47:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 178 states have (on average 1.1685393258426966) internal successors, (208), 179 states have internal predecessors, (208), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 02:47:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 228 transitions. [2023-12-21 02:47:18,252 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 228 transitions. Word has length 77 [2023-12-21 02:47:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:47:18,252 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 228 transitions. [2023-12-21 02:47:18,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 3.217391304347826) internal successors, (74), 25 states have internal predecessors, (74), 11 states have call successors, (16), 5 states have call predecessors, (16), 7 states have return successors, (16), 8 states have call predecessors, (16), 11 states have call successors, (16) [2023-12-21 02:47:18,252 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 228 transitions. [2023-12-21 02:47:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 02:47:18,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:47:18,253 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] [2023-12-21 02:47:18,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 02:47:18,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:47:18,458 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:47:18,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:47:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1302768701, now seen corresponding path program 1 times [2023-12-21 02:47:18,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:47:18,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907846354] [2023-12-21 02:47:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:47:18,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:47:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:47:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:47:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:18,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:47:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:47:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:47:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:18,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:47:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:47:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:47:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:47:18,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:47:18,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907846354] [2023-12-21 02:47:18,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907846354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:47:18,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:47:18,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:47:18,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412667254] [2023-12-21 02:47:18,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:47:18,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:47:18,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:47:18,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:47:18,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:47:18,694 INFO L87 Difference]: Start difference. First operand 194 states and 228 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 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) [2023-12-21 02:47:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:47:19,062 INFO L93 Difference]: Finished difference Result 439 states and 523 transitions. [2023-12-21 02:47:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 02:47:19,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 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 [2023-12-21 02:47:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:47:19,068 INFO L225 Difference]: With dead ends: 439 [2023-12-21 02:47:19,068 INFO L226 Difference]: Without dead ends: 246 [2023-12-21 02:47:19,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2023-12-21 02:47:19,069 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 332 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:47:19,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 415 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:47:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-21 02:47:19,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 190. [2023-12-21 02:47:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 174 states have (on average 1.1666666666666667) internal successors, (203), 175 states have internal predecessors, (203), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 02:47:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 223 transitions. [2023-12-21 02:47:19,105 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 223 transitions. Word has length 78 [2023-12-21 02:47:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:47:19,105 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 223 transitions. [2023-12-21 02:47:19,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 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) [2023-12-21 02:47:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 223 transitions. [2023-12-21 02:47:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 02:47:19,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:47:19,106 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] [2023-12-21 02:47:19,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 02:47:19,106 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:47:19,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:47:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1800991337, now seen corresponding path program 1 times [2023-12-21 02:47:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:47:19,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401183914] [2023-12-21 02:47:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:47:19,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:47:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:47:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:47:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:47:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:47:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:47:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:47:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:47:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:47:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:47:19,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:47:19,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401183914] [2023-12-21 02:47:19,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401183914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:47:19,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:47:19,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:47:19,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479264692] [2023-12-21 02:47:19,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:47:19,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:47:19,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:47:19,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:47:19,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:47:19,222 INFO L87 Difference]: Start difference. First operand 190 states and 223 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) [2023-12-21 02:47:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:47:19,357 INFO L93 Difference]: Finished difference Result 406 states and 477 transitions. [2023-12-21 02:47:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:47:19,358 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 [2023-12-21 02:47:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:47:19,358 INFO L225 Difference]: With dead ends: 406 [2023-12-21 02:47:19,358 INFO L226 Difference]: Without dead ends: 217 [2023-12-21 02:47:19,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:47:19,359 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 111 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:47:19,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 193 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:47:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-21 02:47:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 190. [2023-12-21 02:47:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 174 states have (on average 1.1494252873563218) internal successors, (200), 175 states have internal predecessors, (200), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 02:47:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 220 transitions. [2023-12-21 02:47:19,380 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 220 transitions. Word has length 78 [2023-12-21 02:47:19,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:47:19,380 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 220 transitions. [2023-12-21 02:47:19,381 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) [2023-12-21 02:47:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 220 transitions. [2023-12-21 02:47:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 02:47:19,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:47:19,381 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] [2023-12-21 02:47:19,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 02:47:19,381 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:47:19,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:47:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1083913983, now seen corresponding path program 1 times [2023-12-21 02:47:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:47:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223616157] [2023-12-21 02:47:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:47:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:47:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:47:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:47:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:47:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:47:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:47:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:47:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:47:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:47:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:47:19,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:47:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223616157] [2023-12-21 02:47:19,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223616157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:47:19,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:47:19,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:47:19,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307116339] [2023-12-21 02:47:19,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:47:19,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:47:19,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:47:19,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:47:19,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:47:19,440 INFO L87 Difference]: Start difference. First operand 190 states and 220 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) [2023-12-21 02:47:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:47:19,584 INFO L93 Difference]: Finished difference Result 412 states and 480 transitions. [2023-12-21 02:47:19,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:47:19,585 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 [2023-12-21 02:47:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:47:19,585 INFO L225 Difference]: With dead ends: 412 [2023-12-21 02:47:19,586 INFO L226 Difference]: Without dead ends: 223 [2023-12-21 02:47:19,586 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 [2023-12-21 02:47:19,586 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 47 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:47:19,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 320 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:47:19,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-12-21 02:47:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 178. [2023-12-21 02:47:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 162 states have (on average 1.1358024691358024) internal successors, (184), 163 states have internal predecessors, (184), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 02:47:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 204 transitions. [2023-12-21 02:47:19,612 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 204 transitions. Word has length 78 [2023-12-21 02:47:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:47:19,612 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 204 transitions. [2023-12-21 02:47:19,612 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) [2023-12-21 02:47:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 204 transitions. [2023-12-21 02:47:19,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 02:47:19,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:47:19,613 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] [2023-12-21 02:47:19,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 02:47:19,613 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:47:19,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:47:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash -379109412, now seen corresponding path program 1 times [2023-12-21 02:47:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:47:19,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878414597] [2023-12-21 02:47:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:47:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:47:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:47:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:47:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:47:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:47:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:47:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:47:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:47:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:47:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:47:21,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:47:21,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878414597] [2023-12-21 02:47:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878414597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:47:21,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:47:21,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:47:21,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694200065] [2023-12-21 02:47:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:47:21,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:47:21,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:47:21,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:47:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:47:21,063 INFO L87 Difference]: Start difference. First operand 178 states and 204 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2023-12-21 02:47:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:47:21,539 INFO L93 Difference]: Finished difference Result 187 states and 214 transitions. [2023-12-21 02:47:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:47:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 80 [2023-12-21 02:47:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:47:21,540 INFO L225 Difference]: With dead ends: 187 [2023-12-21 02:47:21,540 INFO L226 Difference]: Without dead ends: 185 [2023-12-21 02:47:21,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:47:21,541 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 154 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:47:21,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 128 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:47:21,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-21 02:47:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2023-12-21 02:47:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 167 states have internal predecessors, (188), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 02:47:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 208 transitions. [2023-12-21 02:47:21,568 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 208 transitions. Word has length 80 [2023-12-21 02:47:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:47:21,568 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 208 transitions. [2023-12-21 02:47:21,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2023-12-21 02:47:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 208 transitions. [2023-12-21 02:47:21,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 02:47:21,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:47:21,569 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] [2023-12-21 02:47:21,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 02:47:21,569 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:47:21,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:47:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash -379049830, now seen corresponding path program 1 times [2023-12-21 02:47:21,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:47:21,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518808565] [2023-12-21 02:47:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:47:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:47:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:47:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:47:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:47:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:47:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:47:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:47:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:47:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:47:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:47:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-21 02:47:21,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:47:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518808565] [2023-12-21 02:47:21,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518808565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:47:21,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:47:21,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:47:21,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532104549] [2023-12-21 02:47:21,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:47:21,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:47:21,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:47:21,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:47:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:47:21,900 INFO L87 Difference]: Start difference. First operand 182 states and 208 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2023-12-21 02:47:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:47:22,143 INFO L93 Difference]: Finished difference Result 364 states and 416 transitions. [2023-12-21 02:47:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:47:22,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 80 [2023-12-21 02:47:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:47:22,144 INFO L225 Difference]: With dead ends: 364 [2023-12-21 02:47:22,144 INFO L226 Difference]: Without dead ends: 183 [2023-12-21 02:47:22,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:47:22,145 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 120 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:47:22,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 153 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:47:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-21 02:47:22,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2023-12-21 02:47:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 166 states have (on average 1.1204819277108433) internal successors, (186), 167 states have internal predecessors, (186), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-21 02:47:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 206 transitions. [2023-12-21 02:47:22,173 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 206 transitions. Word has length 80 [2023-12-21 02:47:22,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:47:22,173 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 206 transitions. [2023-12-21 02:47:22,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2023-12-21 02:47:22,173 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 206 transitions. [2023-12-21 02:47:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 02:47:22,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:47:22,174 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] [2023-12-21 02:47:22,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 02:47:22,174 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:47:22,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:47:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash -321791528, now seen corresponding path program 1 times [2023-12-21 02:47:22,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:47:22,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762789558] [2023-12-21 02:47:22,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:47:22,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:47:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:55:28,672 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:55:45,915 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:55:54,006 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:56:19,972 WARN L293 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:56:28,088 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:56:36,878 WARN L293 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:56:44,970 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:56:53,126 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:57:02,784 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:57:10,864 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:57:18,949 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:57:26,614 WARN L293 SmtUtils]: Spent 7.66s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:57:34,772 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:57:42,880 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:57:51,145 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:57:59,326 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:58:07,404 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:58:15,486 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-21 02:58:22,756 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 [2023-12-21 02:58:23,569 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 02:58:23,957 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-21 02:58:23,975 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 02:58:23,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 02:58:23,976 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 81 with TraceHistMax 8,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while executing Executor. [2023-12-21 02:58:23,978 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:23,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 02:58:23,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 02:58:23 BoogieIcfgContainer [2023-12-21 02:58:23,981 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 02:58:23,981 INFO L158 Benchmark]: Toolchain (without parser) took 852808.85ms. Allocated memory was 280.0MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 227.2MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-21 02:58:23,981 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 185.6MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 02:58:23,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.29ms. Allocated memory is still 280.0MB. Free memory was 227.2MB in the beginning and 212.9MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-21 02:58:23,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.82ms. Allocated memory is still 280.0MB. Free memory was 212.9MB in the beginning and 210.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 02:58:23,982 INFO L158 Benchmark]: Boogie Preprocessor took 62.90ms. Allocated memory is still 280.0MB. Free memory was 210.2MB in the beginning and 206.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 02:58:23,982 INFO L158 Benchmark]: RCFGBuilder took 396.98ms. Allocated memory is still 280.0MB. Free memory was 206.6MB in the beginning and 182.1MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-21 02:58:23,982 INFO L158 Benchmark]: TraceAbstraction took 852022.47ms. Allocated memory was 280.0MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 181.5MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-21 02:58:23,982 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 185.6MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 265.29ms. Allocated memory is still 280.0MB. Free memory was 227.2MB in the beginning and 212.9MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.82ms. Allocated memory is still 280.0MB. Free memory was 212.9MB in the beginning and 210.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.90ms. Allocated memory is still 280.0MB. Free memory was 210.2MB in the beginning and 206.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 396.98ms. Allocated memory is still 280.0MB. Free memory was 206.6MB in the beginning and 182.1MB in the end (delta: 24.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 852022.47ms. Allocated memory was 280.0MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 181.5MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 81 with TraceHistMax 8,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 852.0s, OverallIterations: 31, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 39.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8452 SdHoareTripleChecker+Valid, 13.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8447 mSDsluCounter, 9800 SdHoareTripleChecker+Invalid, 12.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7444 mSDsCounter, 575 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8845 IncrementalHoareTripleChecker+Invalid, 9420 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 575 mSolverCounterUnsat, 2356 mSDtfsCounter, 8845 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1415 GetRequests, 951 SyntacticMatches, 16 SemanticMatches, 448 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3547 ImplicationChecksByTransitivity, 147.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=410occurred in iteration=23, InterpolantAutomatonStates: 306, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 30 MinimizatonAttempts, 2357 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 147.5s InterpolantComputationTime, 2519 NumberOfCodeBlocks, 2519 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2631 ConstructedInterpolants, 30 QuantifiedInterpolants, 35342 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1204 ConjunctsInSsa, 241 ConjunctsInUnsatCore, 36 InterpolantComputations, 28 PerfectInterpolantSequences, 3867/4032 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-21 02:58:23,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137