/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-62.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 15:05:15,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 15:05:15,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 15:05:15,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 15:05:15,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 15:05:15,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 15:05:15,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 15:05:15,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 15:05:15,382 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 15:05:15,385 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 15:05:15,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 15:05:15,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 15:05:15,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 15:05:15,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 15:05:15,387 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 15:05:15,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 15:05:15,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 15:05:15,387 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 15:05:15,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 15:05:15,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 15:05:15,388 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 15:05:15,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 15:05:15,389 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 15:05:15,389 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 15:05:15,389 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 15:05:15,389 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 15:05:15,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 15:05:15,390 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 15:05:15,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 15:05:15,390 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 15:05:15,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 15:05:15,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 15:05:15,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:05:15,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 15:05:15,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 15:05:15,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 15:05:15,392 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 15:05:15,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 15:05:15,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 15:05:15,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 15:05:15,392 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 15:05:15,392 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 15:05:15,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 15:05:15,393 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 15:05:15,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 15:05:15,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 15:05:15,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 15:05:15,612 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 15:05:15,613 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 15:05:15,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-62.i [2023-12-19 15:05:16,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 15:05:16,837 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 15:05:16,838 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-62.i [2023-12-19 15:05:16,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c530d7be/7f7d4164ffdc4f4da817536828e920fb/FLAG365fdead1 [2023-12-19 15:05:16,870 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c530d7be/7f7d4164ffdc4f4da817536828e920fb [2023-12-19 15:05:16,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 15:05:16,873 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 15:05:16,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 15:05:16,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 15:05:16,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 15:05:16,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:05:16" (1/1) ... [2023-12-19 15:05:16,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d32f1ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:16, skipping insertion in model container [2023-12-19 15:05:16,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:05:16" (1/1) ... [2023-12-19 15:05:16,904 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 15:05:17,021 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-a_file-62.i[916,929] [2023-12-19 15:05:17,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:05:17,085 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 15:05:17,094 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-a_file-62.i[916,929] [2023-12-19 15:05:17,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:05:17,138 INFO L206 MainTranslator]: Completed translation [2023-12-19 15:05:17,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17 WrapperNode [2023-12-19 15:05:17,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 15:05:17,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 15:05:17,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 15:05:17,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 15:05:17,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,194 INFO L138 Inliner]: procedures = 26, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 330 [2023-12-19 15:05:17,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 15:05:17,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 15:05:17,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 15:05:17,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 15:05:17,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,217 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,233 INFO L175 MemorySlicer]: Split 87 memory accesses to 6 slices as follows [2, 10, 29, 26, 4, 16]. 33 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 1, 3, 3, 1, 2]. The 14 writes are split as follows [0, 1, 4, 6, 1, 2]. [2023-12-19 15:05:17,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 15:05:17,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 15:05:17,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 15:05:17,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 15:05:17,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (1/1) ... [2023-12-19 15:05:17,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:05:17,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:05:17,297 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) [2023-12-19 15:05:17,302 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 [2023-12-19 15:05:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 15:05:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 15:05:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 15:05:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-19 15:05:17,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 15:05:17,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 15:05:17,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 15:05:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 15:05:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-19 15:05:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-19 15:05:17,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 15:05:17,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 15:05:17,409 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 15:05:17,412 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 15:05:17,753 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 15:05:17,787 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 15:05:17,787 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 15:05:17,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:05:17 BoogieIcfgContainer [2023-12-19 15:05:17,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 15:05:17,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 15:05:17,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 15:05:17,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 15:05:17,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:05:16" (1/3) ... [2023-12-19 15:05:17,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea70138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:05:17, skipping insertion in model container [2023-12-19 15:05:17,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:05:17" (2/3) ... [2023-12-19 15:05:17,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea70138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:05:17, skipping insertion in model container [2023-12-19 15:05:17,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:05:17" (3/3) ... [2023-12-19 15:05:17,793 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-62.i [2023-12-19 15:05:17,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 15:05:17,807 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 15:05:17,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 15:05:17,844 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;@1fd123b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 15:05:17,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 15:05:17,847 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) [2023-12-19 15:05:17,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 15:05:17,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:17,854 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] [2023-12-19 15:05:17,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:17,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:17,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1944691701, now seen corresponding path program 1 times [2023-12-19 15:05:17,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993738762] [2023-12-19 15:05:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:17,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:18,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993738762] [2023-12-19 15:05:18,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993738762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:18,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 15:05:18,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048962348] [2023-12-19 15:05:18,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:18,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 15:05:18,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:18,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 15:05:18,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:05:18,145 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) [2023-12-19 15:05:18,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:18,186 INFO L93 Difference]: Finished difference Result 129 states and 200 transitions. [2023-12-19 15:05:18,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 15:05:18,188 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 [2023-12-19 15:05:18,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:18,195 INFO L225 Difference]: With dead ends: 129 [2023-12-19 15:05:18,196 INFO L226 Difference]: Without dead ends: 64 [2023-12-19 15:05:18,199 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 [2023-12-19 15:05:18,202 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 [2023-12-19 15:05:18,203 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] [2023-12-19 15:05:18,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-19 15:05:18,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-19 15:05:18,232 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) [2023-12-19 15:05:18,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2023-12-19 15:05:18,233 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 68 [2023-12-19 15:05:18,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:18,234 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2023-12-19 15:05:18,234 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) [2023-12-19 15:05:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2023-12-19 15:05:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 15:05:18,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:18,239 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] [2023-12-19 15:05:18,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 15:05:18,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:18,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2005151749, now seen corresponding path program 1 times [2023-12-19 15:05:18,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:18,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173882831] [2023-12-19 15:05:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:18,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:18,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:18,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173882831] [2023-12-19 15:05:18,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173882831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:18,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:18,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:05:18,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631971101] [2023-12-19 15:05:18,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:18,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:05:18,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:18,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:05:18,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:05:18,499 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) [2023-12-19 15:05:18,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:18,561 INFO L93 Difference]: Finished difference Result 135 states and 194 transitions. [2023-12-19 15:05:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:05:18,561 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 [2023-12-19 15:05:18,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:18,562 INFO L225 Difference]: With dead ends: 135 [2023-12-19 15:05:18,562 INFO L226 Difference]: Without dead ends: 72 [2023-12-19 15:05:18,563 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 [2023-12-19 15:05:18,564 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 [2023-12-19 15:05:18,564 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] [2023-12-19 15:05:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-19 15:05:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2023-12-19 15:05:18,570 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) [2023-12-19 15:05:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 94 transitions. [2023-12-19 15:05:18,571 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 94 transitions. Word has length 68 [2023-12-19 15:05:18,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:18,572 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 94 transitions. [2023-12-19 15:05:18,572 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) [2023-12-19 15:05:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 94 transitions. [2023-12-19 15:05:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 15:05:18,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:18,573 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] [2023-12-19 15:05:18,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 15:05:18,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:18,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:18,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1947893447, now seen corresponding path program 1 times [2023-12-19 15:05:18,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:18,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744250216] [2023-12-19 15:05:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:18,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:18,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744250216] [2023-12-19 15:05:18,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744250216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:18,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:18,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:05:18,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048249880] [2023-12-19 15:05:18,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:18,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:05:18,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:18,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:05:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:05:18,713 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) [2023-12-19 15:05:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:18,759 INFO L93 Difference]: Finished difference Result 135 states and 192 transitions. [2023-12-19 15:05:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:05:18,763 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 [2023-12-19 15:05:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:18,764 INFO L225 Difference]: With dead ends: 135 [2023-12-19 15:05:18,764 INFO L226 Difference]: Without dead ends: 70 [2023-12-19 15:05:18,765 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 [2023-12-19 15:05:18,765 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 [2023-12-19 15:05:18,766 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] [2023-12-19 15:05:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-19 15:05:18,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-12-19 15:05:18,771 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) [2023-12-19 15:05:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2023-12-19 15:05:18,772 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 68 [2023-12-19 15:05:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:18,774 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2023-12-19 15:05:18,774 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) [2023-12-19 15:05:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2023-12-19 15:05:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 15:05:18,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:18,775 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] [2023-12-19 15:05:18,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 15:05:18,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:18,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1947833865, now seen corresponding path program 1 times [2023-12-19 15:05:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719362208] [2023-12-19 15:05:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:18,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:19,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719362208] [2023-12-19 15:05:19,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719362208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:19,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:19,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:05:19,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948793015] [2023-12-19 15:05:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:19,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:05:19,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:05:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:05:19,018 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 15:05:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:19,093 INFO L93 Difference]: Finished difference Result 160 states and 226 transitions. [2023-12-19 15:05:19,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 15:05:19,094 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 [2023-12-19 15:05:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:19,097 INFO L225 Difference]: With dead ends: 160 [2023-12-19 15:05:19,097 INFO L226 Difference]: Without dead ends: 93 [2023-12-19 15:05:19,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:05:19,106 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 90 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:19,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 224 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:05:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-19 15:05:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 68. [2023-12-19 15:05:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 15:05:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2023-12-19 15:05:19,115 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 68 [2023-12-19 15:05:19,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:19,116 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2023-12-19 15:05:19,116 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) [2023-12-19 15:05:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2023-12-19 15:05:19,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-19 15:05:19,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:19,117 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] [2023-12-19 15:05:19,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 15:05:19,117 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:19,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:19,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1661631908, now seen corresponding path program 1 times [2023-12-19 15:05:19,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:19,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974508021] [2023-12-19 15:05:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:19,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:19,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:19,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974508021] [2023-12-19 15:05:19,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974508021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:19,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:19,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:05:19,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135841147] [2023-12-19 15:05:19,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:19,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:05:19,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:05:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:05:19,325 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 15:05:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:19,446 INFO L93 Difference]: Finished difference Result 228 states and 319 transitions. [2023-12-19 15:05:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:05:19,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 70 [2023-12-19 15:05:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:19,449 INFO L225 Difference]: With dead ends: 228 [2023-12-19 15:05:19,449 INFO L226 Difference]: Without dead ends: 161 [2023-12-19 15:05:19,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:05:19,450 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 199 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:19,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 578 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-19 15:05:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 78. [2023-12-19 15:05:19,462 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) [2023-12-19 15:05:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2023-12-19 15:05:19,464 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 109 transitions. Word has length 70 [2023-12-19 15:05:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:19,465 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 109 transitions. [2023-12-19 15:05:19,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-19 15:05:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 109 transitions. [2023-12-19 15:05:19,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-19 15:05:19,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:19,469 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] [2023-12-19 15:05:19,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 15:05:19,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:19,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1362359734, now seen corresponding path program 1 times [2023-12-19 15:05:19,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:19,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650844293] [2023-12-19 15:05:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:19,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:19,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:19,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650844293] [2023-12-19 15:05:19,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650844293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:19,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:19,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:05:19,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417268841] [2023-12-19 15:05:19,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:19,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:05:19,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:05:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:05:19,784 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 15:05:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:19,852 INFO L93 Difference]: Finished difference Result 211 states and 293 transitions. [2023-12-19 15:05:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:05:19,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2023-12-19 15:05:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:19,853 INFO L225 Difference]: With dead ends: 211 [2023-12-19 15:05:19,853 INFO L226 Difference]: Without dead ends: 134 [2023-12-19 15:05:19,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:05:19,855 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 81 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:19,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 592 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:05:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-19 15:05:19,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 78. [2023-12-19 15:05:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 68 states have (on average 1.3529411764705883) internal successors, (92), 68 states have internal predecessors, (92), 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) [2023-12-19 15:05:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 108 transitions. [2023-12-19 15:05:19,865 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 108 transitions. Word has length 72 [2023-12-19 15:05:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:19,865 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 108 transitions. [2023-12-19 15:05:19,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 15:05:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 108 transitions. [2023-12-19 15:05:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-19 15:05:19,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:19,866 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] [2023-12-19 15:05:19,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 15:05:19,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:19,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash -686157583, now seen corresponding path program 1 times [2023-12-19 15:05:19,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:19,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754613747] [2023-12-19 15:05:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:19,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754613747] [2023-12-19 15:05:19,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754613747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:19,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:19,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:05:19,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665777601] [2023-12-19 15:05:19,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:19,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:05:19,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:19,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:05:19,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:05:19,975 INFO L87 Difference]: Start difference. First operand 78 states and 108 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) [2023-12-19 15:05:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:20,009 INFO L93 Difference]: Finished difference Result 171 states and 237 transitions. [2023-12-19 15:05:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:05:20,009 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 [2023-12-19 15:05:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:20,010 INFO L225 Difference]: With dead ends: 171 [2023-12-19 15:05:20,010 INFO L226 Difference]: Without dead ends: 94 [2023-12-19 15:05:20,010 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 [2023-12-19 15:05:20,011 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 [2023-12-19 15:05:20,011 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] [2023-12-19 15:05:20,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-19 15:05:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2023-12-19 15:05:20,013 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) [2023-12-19 15:05:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 111 transitions. [2023-12-19 15:05:20,013 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 111 transitions. Word has length 72 [2023-12-19 15:05:20,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:20,014 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 111 transitions. [2023-12-19 15:05:20,014 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) [2023-12-19 15:05:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 111 transitions. [2023-12-19 15:05:20,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-19 15:05:20,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:20,014 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] [2023-12-19 15:05:20,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 15:05:20,014 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:20,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:20,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1885600574, now seen corresponding path program 1 times [2023-12-19 15:05:20,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:20,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138187181] [2023-12-19 15:05:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:20,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:20,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138187181] [2023-12-19 15:05:20,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138187181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:20,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:20,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:05:20,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212606580] [2023-12-19 15:05:20,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:20,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:05:20,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:20,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:05:20,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:05:20,236 INFO L87 Difference]: Start difference. First operand 81 states and 111 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 15:05:20,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:20,289 INFO L93 Difference]: Finished difference Result 192 states and 261 transitions. [2023-12-19 15:05:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:05:20,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2023-12-19 15:05:20,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:20,290 INFO L225 Difference]: With dead ends: 192 [2023-12-19 15:05:20,290 INFO L226 Difference]: Without dead ends: 112 [2023-12-19 15:05:20,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:05:20,291 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 73 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:20,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 414 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:05:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-19 15:05:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 81. [2023-12-19 15:05:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.323943661971831) internal successors, (94), 71 states have internal predecessors, (94), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 15:05:20,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 110 transitions. [2023-12-19 15:05:20,295 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 110 transitions. Word has length 72 [2023-12-19 15:05:20,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:20,296 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 110 transitions. [2023-12-19 15:05:20,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-19 15:05:20,296 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 110 transitions. [2023-12-19 15:05:20,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 15:05:20,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:20,296 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] [2023-12-19 15:05:20,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 15:05:20,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:20,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash 772475292, now seen corresponding path program 1 times [2023-12-19 15:05:20,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:20,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489224130] [2023-12-19 15:05:20,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:20,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 15:05:20,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:20,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489224130] [2023-12-19 15:05:20,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489224130] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 15:05:20,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313256719] [2023-12-19 15:05:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:20,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:05:20,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:05:20,650 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) [2023-12-19 15:05:20,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 15:05:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:20,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 15:05:20,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:05:20,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 53 [2023-12-19 15:05:21,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:05:21,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 42 [2023-12-19 15:05:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 15:05:21,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:05:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:21,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313256719] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:05:21,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:05:21,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 11] total 19 [2023-12-19 15:05:21,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088879177] [2023-12-19 15:05:21,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:21,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:05:21,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:21,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:05:21,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-19 15:05:21,339 INFO L87 Difference]: Start difference. First operand 81 states and 110 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 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) [2023-12-19 15:05:21,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:21,706 INFO L93 Difference]: Finished difference Result 243 states and 326 transitions. [2023-12-19 15:05:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 15:05:21,706 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), 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 [2023-12-19 15:05:21,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:21,707 INFO L225 Difference]: With dead ends: 243 [2023-12-19 15:05:21,707 INFO L226 Difference]: Without dead ends: 163 [2023-12-19 15:05:21,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2023-12-19 15:05:21,708 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 222 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:21,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 830 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-19 15:05:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 134. [2023-12-19 15:05:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 122 states have internal predecessors, (159), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 15:05:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 179 transitions. [2023-12-19 15:05:21,712 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 179 transitions. Word has length 74 [2023-12-19 15:05:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:21,713 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 179 transitions. [2023-12-19 15:05:21,713 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), 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) [2023-12-19 15:05:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 179 transitions. [2023-12-19 15:05:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 15:05:21,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:21,713 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, 1, 1, 1, 1, 1, 1] [2023-12-19 15:05:21,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 15:05:21,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:05:21,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:21,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash -238641958, now seen corresponding path program 1 times [2023-12-19 15:05:21,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:21,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882185823] [2023-12-19 15:05:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:21,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:22,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:22,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882185823] [2023-12-19 15:05:22,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882185823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:22,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:22,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:05:22,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649918692] [2023-12-19 15:05:22,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:22,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:05:22,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:22,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:05:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:05:22,126 INFO L87 Difference]: Start difference. First operand 134 states and 179 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) [2023-12-19 15:05:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:22,210 INFO L93 Difference]: Finished difference Result 304 states and 403 transitions. [2023-12-19 15:05:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:05:22,211 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 [2023-12-19 15:05:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:22,212 INFO L225 Difference]: With dead ends: 304 [2023-12-19 15:05:22,212 INFO L226 Difference]: Without dead ends: 171 [2023-12-19 15:05:22,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:05:22,213 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 100 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:22,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 450 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:22,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-19 15:05:22,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 130. [2023-12-19 15:05:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 117 states have (on average 1.3076923076923077) internal successors, (153), 118 states have internal predecessors, (153), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 15:05:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 173 transitions. [2023-12-19 15:05:22,218 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 173 transitions. Word has length 74 [2023-12-19 15:05:22,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:22,218 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 173 transitions. [2023-12-19 15:05:22,218 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) [2023-12-19 15:05:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 173 transitions. [2023-12-19 15:05:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 15:05:22,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:22,219 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] [2023-12-19 15:05:22,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 15:05:22,219 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:22,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1195177118, now seen corresponding path program 1 times [2023-12-19 15:05:22,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:22,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712299667] [2023-12-19 15:05:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:22,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:22,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712299667] [2023-12-19 15:05:22,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712299667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:22,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:22,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:05:22,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75112493] [2023-12-19 15:05:22,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:22,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:05:22,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:22,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:05:22,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:05:22,434 INFO L87 Difference]: Start difference. First operand 130 states and 173 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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) [2023-12-19 15:05:22,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:22,531 INFO L93 Difference]: Finished difference Result 298 states and 394 transitions. [2023-12-19 15:05:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:05:22,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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 74 [2023-12-19 15:05:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:22,533 INFO L225 Difference]: With dead ends: 298 [2023-12-19 15:05:22,533 INFO L226 Difference]: Without dead ends: 169 [2023-12-19 15:05:22,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:05:22,533 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 88 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:22,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 500 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-19 15:05:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 130. [2023-12-19 15:05:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 117 states have (on average 1.2991452991452992) internal successors, (152), 118 states have internal predecessors, (152), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 15:05:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2023-12-19 15:05:22,538 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 74 [2023-12-19 15:05:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:22,538 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2023-12-19 15:05:22,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 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) [2023-12-19 15:05:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2023-12-19 15:05:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 15:05:22,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:22,539 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] [2023-12-19 15:05:22,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 15:05:22,539 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:22,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:22,540 INFO L85 PathProgramCache]: Analyzing trace with hash 184059868, now seen corresponding path program 1 times [2023-12-19 15:05:22,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:22,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041552892] [2023-12-19 15:05:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:22,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:22,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:23,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:23,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 15:05:23,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041552892] [2023-12-19 15:05:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041552892] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 15:05:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630045822] [2023-12-19 15:05:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:23,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:05:23,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:05:23,042 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) [2023-12-19 15:05:23,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 15:05:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:23,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 15:05:23,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:05:23,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 45 [2023-12-19 15:05:23,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:05:23,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 32 [2023-12-19 15:05:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 15:05:23,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:05:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:23,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630045822] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:05:23,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:05:23,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 11] total 21 [2023-12-19 15:05:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026905372] [2023-12-19 15:05:23,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:23,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:05:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:23,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:05:23,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:05:23,619 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 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) [2023-12-19 15:05:23,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:23,990 INFO L93 Difference]: Finished difference Result 298 states and 392 transitions. [2023-12-19 15:05:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:05:23,991 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), 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 [2023-12-19 15:05:23,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:23,991 INFO L225 Difference]: With dead ends: 298 [2023-12-19 15:05:23,991 INFO L226 Difference]: Without dead ends: 169 [2023-12-19 15:05:23,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2023-12-19 15:05:23,992 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 187 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:23,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 773 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-19 15:05:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 126. [2023-12-19 15:05:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 113 states have (on average 1.3008849557522124) internal successors, (147), 114 states have internal predecessors, (147), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 15:05:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2023-12-19 15:05:23,998 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 74 [2023-12-19 15:05:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:23,999 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2023-12-19 15:05:23,999 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), 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) [2023-12-19 15:05:23,999 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2023-12-19 15:05:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 15:05:23,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:23,999 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] [2023-12-19 15:05:24,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 15:05:24,205 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,SelfDestructingSolverStorable11 [2023-12-19 15:05:24,205 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:24,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1960346621, now seen corresponding path program 1 times [2023-12-19 15:05:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:24,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694852699] [2023-12-19 15:05:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:24,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:24,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:24,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694852699] [2023-12-19 15:05:24,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694852699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:24,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:24,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:05:24,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246701568] [2023-12-19 15:05:24,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:24,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:05:24,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:24,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:05:24,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:05:24,303 INFO L87 Difference]: Start difference. First operand 126 states and 167 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) [2023-12-19 15:05:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:24,357 INFO L93 Difference]: Finished difference Result 311 states and 415 transitions. [2023-12-19 15:05:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:05:24,358 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 [2023-12-19 15:05:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:24,359 INFO L225 Difference]: With dead ends: 311 [2023-12-19 15:05:24,359 INFO L226 Difference]: Without dead ends: 186 [2023-12-19 15:05:24,359 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 [2023-12-19 15:05:24,359 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 80 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:24,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 406 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:05:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-19 15:05:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 128. [2023-12-19 15:05:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 115 states have (on average 1.2956521739130435) internal successors, (149), 116 states have internal predecessors, (149), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 15:05:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 169 transitions. [2023-12-19 15:05:24,366 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 169 transitions. Word has length 74 [2023-12-19 15:05:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:24,366 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 169 transitions. [2023-12-19 15:05:24,366 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) [2023-12-19 15:05:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 169 transitions. [2023-12-19 15:05:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 15:05:24,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:24,367 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] [2023-12-19 15:05:24,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 15:05:24,367 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:24,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash -513931126, now seen corresponding path program 1 times [2023-12-19 15:05:24,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:24,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019574364] [2023-12-19 15:05:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:24,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 15:05:24,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019574364] [2023-12-19 15:05:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019574364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 15:05:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990464795] [2023-12-19 15:05:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:24,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:05:24,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:05:24,797 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) [2023-12-19 15:05:24,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 15:05:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:24,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 15:05:24,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:05:24,980 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 [2023-12-19 15:05:25,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:05:25,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 59 [2023-12-19 15:05:25,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:05:25,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 132 treesize of output 74 [2023-12-19 15:05:25,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 55 [2023-12-19 15:05:25,393 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:25,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:05:25,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990464795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:25,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:05:25,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-12-19 15:05:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324734326] [2023-12-19 15:05:25,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:25,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:05:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:25,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:05:25,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-12-19 15:05:25,394 INFO L87 Difference]: Start difference. First operand 128 states and 169 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 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) [2023-12-19 15:05:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:25,656 INFO L93 Difference]: Finished difference Result 202 states and 262 transitions. [2023-12-19 15:05:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:05:25,657 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), 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 [2023-12-19 15:05:25,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:25,658 INFO L225 Difference]: With dead ends: 202 [2023-12-19 15:05:25,658 INFO L226 Difference]: Without dead ends: 200 [2023-12-19 15:05:25,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2023-12-19 15:05:25,659 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 130 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:25,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 502 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:05:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-19 15:05:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 160. [2023-12-19 15:05:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 136 states have (on average 1.25) internal successors, (170), 138 states have internal predecessors, (170), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 15:05:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 206 transitions. [2023-12-19 15:05:25,667 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 206 transitions. Word has length 74 [2023-12-19 15:05:25,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:25,668 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 206 transitions. [2023-12-19 15:05:25,668 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), 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) [2023-12-19 15:05:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 206 transitions. [2023-12-19 15:05:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 15:05:25,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:25,668 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] [2023-12-19 15:05:25,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 15:05:25,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:05:25,875 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:25,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:25,875 INFO L85 PathProgramCache]: Analyzing trace with hash -513871544, now seen corresponding path program 1 times [2023-12-19 15:05:25,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:25,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338449460] [2023-12-19 15:05:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:25,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:25,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:25,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:25,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:25,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338449460] [2023-12-19 15:05:25,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338449460] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:25,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:25,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:05:25,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292439821] [2023-12-19 15:05:25,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:25,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:05:25,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:25,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:05:25,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:05:25,984 INFO L87 Difference]: Start difference. First operand 160 states and 206 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2023-12-19 15:05:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:26,032 INFO L93 Difference]: Finished difference Result 295 states and 381 transitions. [2023-12-19 15:05:26,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:05:26,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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 [2023-12-19 15:05:26,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:26,033 INFO L225 Difference]: With dead ends: 295 [2023-12-19 15:05:26,033 INFO L226 Difference]: Without dead ends: 160 [2023-12-19 15:05:26,033 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 [2023-12-19 15:05:26,034 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 53 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:26,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 302 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:05:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-19 15:05:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-19 15:05:26,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 136 states have (on average 1.2352941176470589) internal successors, (168), 138 states have internal predecessors, (168), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 15:05:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 204 transitions. [2023-12-19 15:05:26,042 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 204 transitions. Word has length 74 [2023-12-19 15:05:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:26,042 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 204 transitions. [2023-12-19 15:05:26,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2023-12-19 15:05:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 204 transitions. [2023-12-19 15:05:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 15:05:26,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:26,043 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] [2023-12-19 15:05:26,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 15:05:26,043 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:26,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:26,043 INFO L85 PathProgramCache]: Analyzing trace with hash -456613242, now seen corresponding path program 1 times [2023-12-19 15:05:26,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:26,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603011582] [2023-12-19 15:05:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:26,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:26,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:26,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603011582] [2023-12-19 15:05:26,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603011582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:26,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:26,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:05:26,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798433786] [2023-12-19 15:05:26,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:26,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:05:26,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:26,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:05:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:05:26,363 INFO L87 Difference]: Start difference. First operand 160 states and 204 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) [2023-12-19 15:05:26,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:26,480 INFO L93 Difference]: Finished difference Result 408 states and 520 transitions. [2023-12-19 15:05:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:05:26,480 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 [2023-12-19 15:05:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:26,482 INFO L225 Difference]: With dead ends: 408 [2023-12-19 15:05:26,482 INFO L226 Difference]: Without dead ends: 273 [2023-12-19 15:05:26,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:05:26,482 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 71 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:26,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 377 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-19 15:05:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 227. [2023-12-19 15:05:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 203 states have (on average 1.2610837438423645) internal successors, (256), 205 states have internal predecessors, (256), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 15:05:26,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 292 transitions. [2023-12-19 15:05:26,492 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 292 transitions. Word has length 74 [2023-12-19 15:05:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:26,492 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 292 transitions. [2023-12-19 15:05:26,492 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) [2023-12-19 15:05:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 292 transitions. [2023-12-19 15:05:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 15:05:26,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:26,493 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] [2023-12-19 15:05:26,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 15:05:26,493 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:26,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:26,493 INFO L85 PathProgramCache]: Analyzing trace with hash -445694648, now seen corresponding path program 1 times [2023-12-19 15:05:26,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:26,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802359770] [2023-12-19 15:05:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:26,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:26,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802359770] [2023-12-19 15:05:26,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802359770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:26,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:26,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:05:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347245438] [2023-12-19 15:05:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:26,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:05:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:26,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:05:26,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:05:26,568 INFO L87 Difference]: Start difference. First operand 227 states and 292 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) [2023-12-19 15:05:26,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:26,662 INFO L93 Difference]: Finished difference Result 590 states and 741 transitions. [2023-12-19 15:05:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:05:26,663 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 [2023-12-19 15:05:26,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:26,664 INFO L225 Difference]: With dead ends: 590 [2023-12-19 15:05:26,664 INFO L226 Difference]: Without dead ends: 388 [2023-12-19 15:05:26,665 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 [2023-12-19 15:05:26,665 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 75 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:26,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 270 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:26,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-19 15:05:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 259. [2023-12-19 15:05:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 235 states have (on average 1.225531914893617) internal successors, (288), 237 states have internal predecessors, (288), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 15:05:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 324 transitions. [2023-12-19 15:05:26,675 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 324 transitions. Word has length 76 [2023-12-19 15:05:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:26,675 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 324 transitions. [2023-12-19 15:05:26,675 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) [2023-12-19 15:05:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 324 transitions. [2023-12-19 15:05:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 15:05:26,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:26,676 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] [2023-12-19 15:05:26,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 15:05:26,676 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:26,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:26,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1821417921, now seen corresponding path program 1 times [2023-12-19 15:05:26,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:26,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842957074] [2023-12-19 15:05:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:26,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842957074] [2023-12-19 15:05:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842957074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:26,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:26,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:05:26,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15025043] [2023-12-19 15:05:26,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:26,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:05:26,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:26,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:05:26,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:05:26,880 INFO L87 Difference]: Start difference. First operand 259 states and 324 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2023-12-19 15:05:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:26,990 INFO L93 Difference]: Finished difference Result 620 states and 768 transitions. [2023-12-19 15:05:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:05:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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 [2023-12-19 15:05:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:26,992 INFO L225 Difference]: With dead ends: 620 [2023-12-19 15:05:26,992 INFO L226 Difference]: Without dead ends: 386 [2023-12-19 15:05:26,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:05:26,993 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 76 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:26,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 312 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-19 15:05:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 336. [2023-12-19 15:05:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 312 states have (on average 1.2307692307692308) internal successors, (384), 314 states have internal predecessors, (384), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 15:05:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 420 transitions. [2023-12-19 15:05:27,006 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 420 transitions. Word has length 76 [2023-12-19 15:05:27,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:27,006 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 420 transitions. [2023-12-19 15:05:27,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 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) [2023-12-19 15:05:27,006 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 420 transitions. [2023-12-19 15:05:27,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 15:05:27,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:27,007 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] [2023-12-19 15:05:27,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 15:05:27,007 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:27,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2058710480, now seen corresponding path program 1 times [2023-12-19 15:05:27,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:27,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471315507] [2023-12-19 15:05:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471315507] [2023-12-19 15:05:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471315507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:27,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:27,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:05:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661584194] [2023-12-19 15:05:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:05:27,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:05:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:05:27,133 INFO L87 Difference]: Start difference. First operand 336 states and 420 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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) [2023-12-19 15:05:27,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:27,187 INFO L93 Difference]: Finished difference Result 569 states and 709 transitions. [2023-12-19 15:05:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 15:05:27,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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 [2023-12-19 15:05:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:27,188 INFO L225 Difference]: With dead ends: 569 [2023-12-19 15:05:27,188 INFO L226 Difference]: Without dead ends: 258 [2023-12-19 15:05:27,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:05:27,189 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 13 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:27,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 194 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:05:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-19 15:05:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2023-12-19 15:05:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 234 states have (on average 1.2094017094017093) internal successors, (283), 236 states have internal predecessors, (283), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 15:05:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 319 transitions. [2023-12-19 15:05:27,198 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 319 transitions. Word has length 76 [2023-12-19 15:05:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:27,199 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 319 transitions. [2023-12-19 15:05:27,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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) [2023-12-19 15:05:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 319 transitions. [2023-12-19 15:05:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 15:05:27,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:27,200 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] [2023-12-19 15:05:27,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 15:05:27,200 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:27,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:27,200 INFO L85 PathProgramCache]: Analyzing trace with hash 561566617, now seen corresponding path program 1 times [2023-12-19 15:05:27,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:27,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693518137] [2023-12-19 15:05:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:27,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:27,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693518137] [2023-12-19 15:05:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693518137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:27,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:05:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472343249] [2023-12-19 15:05:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:05:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:05:27,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:05:27,373 INFO L87 Difference]: Start difference. First operand 258 states and 319 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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) [2023-12-19 15:05:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:27,440 INFO L93 Difference]: Finished difference Result 529 states and 649 transitions. [2023-12-19 15:05:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:05:27,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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 77 [2023-12-19 15:05:27,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:27,449 INFO L225 Difference]: With dead ends: 529 [2023-12-19 15:05:27,450 INFO L226 Difference]: Without dead ends: 296 [2023-12-19 15:05:27,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:05:27,450 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 43 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:27,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 364 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:05:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-19 15:05:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 258. [2023-12-19 15:05:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 234 states have (on average 1.2008547008547008) internal successors, (281), 236 states have internal predecessors, (281), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 15:05:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 317 transitions. [2023-12-19 15:05:27,463 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 317 transitions. Word has length 77 [2023-12-19 15:05:27,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:27,464 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 317 transitions. [2023-12-19 15:05:27,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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) [2023-12-19 15:05:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 317 transitions. [2023-12-19 15:05:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-19 15:05:27,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:27,464 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] [2023-12-19 15:05:27,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 15:05:27,465 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:27,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash -39398829, now seen corresponding path program 1 times [2023-12-19 15:05:27,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:27,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455769513] [2023-12-19 15:05:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:27,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 15:05:27,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:27,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455769513] [2023-12-19 15:05:27,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455769513] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 15:05:27,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115514462] [2023-12-19 15:05:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:27,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:05:27,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:05:27,827 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) [2023-12-19 15:05:27,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 15:05:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:27,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 15:05:27,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:05:27,983 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 [2023-12-19 15:05:28,200 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 [2023-12-19 15:05:28,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-19 15:05:28,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-19 15:05:28,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 15:05:28,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-19 15:05:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 81 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 15:05:28,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:05:28,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-19 15:05:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-19 15:05:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115514462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:05:28,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 15:05:28,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-12-19 15:05:28,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349314995] [2023-12-19 15:05:28,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 15:05:28,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 15:05:28,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 15:05:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:05:28,430 INFO L87 Difference]: Start difference. First operand 258 states and 317 transitions. Second operand has 21 states, 18 states have (on average 4.833333333333333) internal successors, (87), 21 states have internal predecessors, (87), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (22), 8 states have call predecessors, (22), 11 states have call successors, (22) [2023-12-19 15:05:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:28,644 INFO L93 Difference]: Finished difference Result 477 states and 587 transitions. [2023-12-19 15:05:28,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 15:05:28,656 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.833333333333333) internal successors, (87), 21 states have internal predecessors, (87), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (22), 8 states have call predecessors, (22), 11 states have call successors, (22) Word has length 77 [2023-12-19 15:05:28,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:28,658 INFO L225 Difference]: With dead ends: 477 [2023-12-19 15:05:28,658 INFO L226 Difference]: Without dead ends: 244 [2023-12-19 15:05:28,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2023-12-19 15:05:28,659 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 122 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:28,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 257 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:28,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-19 15:05:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 234. [2023-12-19 15:05:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 208 states have (on average 1.1971153846153846) internal successors, (249), 210 states have internal predecessors, (249), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-19 15:05:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 285 transitions. [2023-12-19 15:05:28,672 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 285 transitions. Word has length 77 [2023-12-19 15:05:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:28,688 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 285 transitions. [2023-12-19 15:05:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.833333333333333) internal successors, (87), 21 states have internal predecessors, (87), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (22), 8 states have call predecessors, (22), 11 states have call successors, (22) [2023-12-19 15:05:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 285 transitions. [2023-12-19 15:05:28,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 15:05:28,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:28,689 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] [2023-12-19 15:05:28,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 15:05:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:05:28,895 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:28,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2094073389, now seen corresponding path program 1 times [2023-12-19 15:05:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:28,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456766235] [2023-12-19 15:05:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456766235] [2023-12-19 15:05:29,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456766235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:29,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:29,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 15:05:29,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696988236] [2023-12-19 15:05:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:29,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:05:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:29,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:05:29,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:05:29,130 INFO L87 Difference]: Start difference. First operand 234 states and 285 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2023-12-19 15:05:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:29,341 INFO L93 Difference]: Finished difference Result 828 states and 997 transitions. [2023-12-19 15:05:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 15:05:29,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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 [2023-12-19 15:05:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:29,343 INFO L225 Difference]: With dead ends: 828 [2023-12-19 15:05:29,343 INFO L226 Difference]: Without dead ends: 623 [2023-12-19 15:05:29,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2023-12-19 15:05:29,344 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 245 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:29,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 603 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-12-19 15:05:29,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 384. [2023-12-19 15:05:29,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 345 states have (on average 1.182608695652174) internal successors, (408), 349 states have internal predecessors, (408), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 15:05:29,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 460 transitions. [2023-12-19 15:05:29,361 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 460 transitions. Word has length 78 [2023-12-19 15:05:29,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:29,361 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 460 transitions. [2023-12-19 15:05:29,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2023-12-19 15:05:29,361 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 460 transitions. [2023-12-19 15:05:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 15:05:29,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:29,362 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] [2023-12-19 15:05:29,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 15:05:29,362 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:29,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1875218671, now seen corresponding path program 1 times [2023-12-19 15:05:29,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:29,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578544037] [2023-12-19 15:05:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:29,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:29,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578544037] [2023-12-19 15:05:29,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578544037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:29,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:29,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:05:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673741602] [2023-12-19 15:05:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:29,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:05:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:29,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:05:29,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:05:29,417 INFO L87 Difference]: Start difference. First operand 384 states and 460 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) [2023-12-19 15:05:29,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:29,496 INFO L93 Difference]: Finished difference Result 933 states and 1109 transitions. [2023-12-19 15:05:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:05:29,496 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 [2023-12-19 15:05:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:29,498 INFO L225 Difference]: With dead ends: 933 [2023-12-19 15:05:29,498 INFO L226 Difference]: Without dead ends: 582 [2023-12-19 15:05:29,498 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 [2023-12-19 15:05:29,499 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 62 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:29,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 472 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-12-19 15:05:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 355. [2023-12-19 15:05:29,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 318 states have (on average 1.169811320754717) internal successors, (372), 321 states have internal predecessors, (372), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-19 15:05:29,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 420 transitions. [2023-12-19 15:05:29,529 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 420 transitions. Word has length 78 [2023-12-19 15:05:29,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:29,530 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 420 transitions. [2023-12-19 15:05:29,530 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) [2023-12-19 15:05:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 420 transitions. [2023-12-19 15:05:29,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-19 15:05:29,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:29,530 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] [2023-12-19 15:05:29,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 15:05:29,531 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:29,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1365462434, now seen corresponding path program 1 times [2023-12-19 15:05:29,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:29,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323198502] [2023-12-19 15:05:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:29,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:29,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323198502] [2023-12-19 15:05:29,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323198502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:29,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:29,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:05:29,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592218557] [2023-12-19 15:05:29,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:29,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:05:29,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:29,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:05:29,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:05:29,600 INFO L87 Difference]: Start difference. First operand 355 states and 420 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-12-19 15:05:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:29,682 INFO L93 Difference]: Finished difference Result 681 states and 806 transitions. [2023-12-19 15:05:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:05:29,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 79 [2023-12-19 15:05:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:29,684 INFO L225 Difference]: With dead ends: 681 [2023-12-19 15:05:29,684 INFO L226 Difference]: Without dead ends: 359 [2023-12-19 15:05:29,684 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 [2023-12-19 15:05:29,684 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 73 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:29,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 170 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:05:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-19 15:05:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 308. [2023-12-19 15:05:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 273 states have (on average 1.1355311355311355) internal successors, (310), 275 states have internal predecessors, (310), 22 states have call successors, (22), 12 states have call predecessors, (22), 12 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 15:05:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 354 transitions. [2023-12-19 15:05:29,698 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 354 transitions. Word has length 79 [2023-12-19 15:05:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:29,698 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 354 transitions. [2023-12-19 15:05:29,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-12-19 15:05:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 354 transitions. [2023-12-19 15:05:29,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 15:05:29,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:29,699 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:05:29,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 15:05:29,699 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:29,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash 847893285, now seen corresponding path program 1 times [2023-12-19 15:05:29,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:29,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724454681] [2023-12-19 15:05:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:29,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:29,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:29,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724454681] [2023-12-19 15:05:29,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724454681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:29,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:29,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:05:29,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805315850] [2023-12-19 15:05:29,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:29,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:05:29,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:29,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:05:29,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:05:29,820 INFO L87 Difference]: Start difference. First operand 308 states and 354 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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) [2023-12-19 15:05:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:29,888 INFO L93 Difference]: Finished difference Result 703 states and 808 transitions. [2023-12-19 15:05:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:05:29,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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 81 [2023-12-19 15:05:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:29,890 INFO L225 Difference]: With dead ends: 703 [2023-12-19 15:05:29,890 INFO L226 Difference]: Without dead ends: 428 [2023-12-19 15:05:29,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:05:29,890 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 81 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:29,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 353 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:05:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-19 15:05:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 286. [2023-12-19 15:05:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 251 states have (on average 1.1235059760956174) internal successors, (282), 253 states have internal predecessors, (282), 22 states have call successors, (22), 12 states have call predecessors, (22), 12 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 15:05:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 326 transitions. [2023-12-19 15:05:29,904 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 326 transitions. Word has length 81 [2023-12-19 15:05:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:29,904 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 326 transitions. [2023-12-19 15:05:29,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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) [2023-12-19 15:05:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 326 transitions. [2023-12-19 15:05:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 15:05:29,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:29,905 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:05:29,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 15:05:29,905 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:29,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash 641241392, now seen corresponding path program 1 times [2023-12-19 15:05:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200072507] [2023-12-19 15:05:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:29,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 15:05:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 15:05:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 15:05:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 15:05:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:30,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 15:05:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 15:05:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:30,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 15:05:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:30,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 15:05:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:05:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-19 15:05:30,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:05:30,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200072507] [2023-12-19 15:05:30,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200072507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:05:30,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:05:30,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:05:30,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702287864] [2023-12-19 15:05:30,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:05:30,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:05:30,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:05:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:05:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:05:30,027 INFO L87 Difference]: Start difference. First operand 286 states and 326 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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) [2023-12-19 15:05:30,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:05:30,087 INFO L93 Difference]: Finished difference Result 601 states and 686 transitions. [2023-12-19 15:05:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:05:30,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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 81 [2023-12-19 15:05:30,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:05:30,089 INFO L225 Difference]: With dead ends: 601 [2023-12-19 15:05:30,089 INFO L226 Difference]: Without dead ends: 348 [2023-12-19 15:05:30,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:05:30,090 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 53 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:05:30,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 343 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:05:30,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-19 15:05:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 286. [2023-12-19 15:05:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 251 states have (on average 1.1075697211155378) internal successors, (278), 253 states have internal predecessors, (278), 22 states have call successors, (22), 12 states have call predecessors, (22), 12 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 15:05:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 322 transitions. [2023-12-19 15:05:30,103 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 322 transitions. Word has length 81 [2023-12-19 15:05:30,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:05:30,103 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 322 transitions. [2023-12-19 15:05:30,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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) [2023-12-19 15:05:30,103 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 322 transitions. [2023-12-19 15:05:30,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 15:05:30,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:05:30,104 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:05:30,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 15:05:30,104 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:05:30,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:05:30,104 INFO L85 PathProgramCache]: Analyzing trace with hash -10337099, now seen corresponding path program 1 times [2023-12-19 15:05:30,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:05:30,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837130992] [2023-12-19 15:05:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:05:30,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:05:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-19 15:19:36,000 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,036 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 [2023-12-19 15:19:36,083 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,098 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,112 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,126 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,140 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,154 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,170 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,184 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,198 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,219 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,226 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,227 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,227 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,227 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,228 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,228 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,230 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,230 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,231 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,233 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-19 15:19:36,236 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 15:19:36,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 15:19:36,236 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 84 with TraceHistMax 8,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 82 interpolants. [2023-12-19 15:19:36,251 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] [2023-12-19 15:19:36,253 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 15:19:36,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 03:19:36 BoogieIcfgContainer [2023-12-19 15:19:36,254 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 15:19:36,255 INFO L158 Benchmark]: Toolchain (without parser) took 859381.36ms. Allocated memory was 198.2MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 149.6MB in the beginning and 1.1GB in the end (delta: -930.3MB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-19 15:19:36,255 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 198.2MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 15:19:36,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.44ms. Allocated memory is still 198.2MB. Free memory was 149.2MB in the beginning and 135.8MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 15:19:36,255 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.25ms. Allocated memory is still 198.2MB. Free memory was 135.8MB in the beginning and 132.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 15:19:36,255 INFO L158 Benchmark]: Boogie Preprocessor took 70.73ms. Allocated memory is still 198.2MB. Free memory was 132.7MB in the beginning and 128.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 15:19:36,255 INFO L158 Benchmark]: RCFGBuilder took 521.23ms. Allocated memory is still 198.2MB. Free memory was 128.8MB in the beginning and 157.9MB in the end (delta: -29.1MB). Peak memory consumption was 20.5MB. Max. memory is 8.0GB. [2023-12-19 15:19:36,255 INFO L158 Benchmark]: TraceAbstraction took 858465.34ms. Allocated memory was 198.2MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 157.4MB in the beginning and 1.1GB in the end (delta: -922.4MB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-19 15:19:36,256 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 198.2MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 263.44ms. Allocated memory is still 198.2MB. Free memory was 149.2MB in the beginning and 135.8MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.25ms. Allocated memory is still 198.2MB. Free memory was 135.8MB in the beginning and 132.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 70.73ms. Allocated memory is still 198.2MB. Free memory was 132.7MB in the beginning and 128.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 521.23ms. Allocated memory is still 198.2MB. Free memory was 128.8MB in the beginning and 157.9MB in the end (delta: -29.1MB). Peak memory consumption was 20.5MB. Max. memory is 8.0GB. * TraceAbstraction took 858465.34ms. Allocated memory was 198.2MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 157.4MB in the beginning and 1.1GB in the end (delta: -922.4MB). Peak memory consumption was 1.7GB. 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 84 with TraceHistMax 8,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 82 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 858.4s, OverallIterations: 27, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2303 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2292 mSDsluCounter, 10198 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7682 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2760 IncrementalHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 2516 mSDtfsCounter, 2760 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1206 GetRequests, 981 SyntacticMatches, 3 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=384occurred in iteration=22, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 1460 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 2228 NumberOfCodeBlocks, 2228 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2420 ConstructedInterpolants, 0 QuantifiedInterpolants, 9180 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1166 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 33 InterpolantComputations, 25 PerfectInterpolantSequences, 3600/3696 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