/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_fillercode_fillercodesize_ps-cn-500_file-96.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:03:20,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:03:20,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:03:20,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:03:20,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:03:20,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:03:20,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:03:20,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:03:20,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:03:20,864 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:03:20,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:03:20,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:03:20,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:03:20,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:03:20,865 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:03:20,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:03:20,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:03:20,866 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:03:20,866 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:03:20,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:03:20,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:03:20,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:03:20,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:03:20,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:03:20,870 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:03:20,870 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:03:20,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:03:20,871 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:03:20,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:03:20,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:03:20,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:03:20,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:03:20,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:03:20,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:03:20,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:03:20,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:03:20,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:03:20,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:03:20,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:03:20,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:03:20,874 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:03:20,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:03:20,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:03:20,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:03:21,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:03:21,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:03:21,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:03:21,091 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:03:21,091 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:03:21,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-12-15 20:03:22,042 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:03:22,273 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:03:22,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-12-15 20:03:22,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8564bbb21/23aa778f29094a35bf032e0ef2dfeca2/FLAG3dfb2ae1f [2023-12-15 20:03:22,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8564bbb21/23aa778f29094a35bf032e0ef2dfeca2 [2023-12-15 20:03:22,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:03:22,302 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:03:22,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:03:22,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:03:22,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:03:22,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bfe460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22, skipping insertion in model container [2023-12-15 20:03:22,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,346 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:03:22,440 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-96.i[916,929] [2023-12-15 20:03:22,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:03:22,581 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:03:22,597 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_fillercode_fillercodesize_ps-cn-500_file-96.i[916,929] [2023-12-15 20:03:22,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:03:22,671 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:03:22,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22 WrapperNode [2023-12-15 20:03:22,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:03:22,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:03:22,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:03:22,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:03:22,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,766 INFO L138 Inliner]: procedures = 26, calls = 132, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 906 [2023-12-15 20:03:22,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:03:22,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:03:22,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:03:22,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:03:22,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,857 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 20:03:22,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,895 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:03:22,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:03:22,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:03:22,896 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:03:22,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (1/1) ... [2023-12-15 20:03:22,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:03:22,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:22,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 20:03:22,931 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 [2023-12-15 20:03:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:03:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:03:22,955 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:03:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:03:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:03:22,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:03:23,081 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:03:23,082 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:03:23,821 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:03:23,867 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:03:23,867 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:03:23,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:03:23 BoogieIcfgContainer [2023-12-15 20:03:23,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:03:23,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:03:23,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:03:23,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:03:23,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:03:22" (1/3) ... [2023-12-15 20:03:23,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a05c1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:03:23, skipping insertion in model container [2023-12-15 20:03:23,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:03:22" (2/3) ... [2023-12-15 20:03:23,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a05c1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:03:23, skipping insertion in model container [2023-12-15 20:03:23,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:03:23" (3/3) ... [2023-12-15 20:03:23,875 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-96.i [2023-12-15 20:03:23,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:03:23,886 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:03:23,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:03:23,946 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;@831a35a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:03:23,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:03:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 229 states have (on average 1.6550218340611353) internal successors, (379), 230 states have internal predecessors, (379), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-12-15 20:03:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-15 20:03:23,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:23,985 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:23,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:23,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1345669083, now seen corresponding path program 1 times [2023-12-15 20:03:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:23,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637234401] [2023-12-15 20:03:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:23,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:24,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637234401] [2023-12-15 20:03:24,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:03:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080284473] [2023-12-15 20:03:24,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:24,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:24,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:24,323 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) [2023-12-15 20:03:24,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:03:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:24,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 1670 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:03:24,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 27848 trivial. 0 not checked. [2023-12-15 20:03:24,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:24,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080284473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:24,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:24,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:03:24,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202774251] [2023-12-15 20:03:24,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:03:24,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:03:24,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:03:24,799 INFO L87 Difference]: Start difference. First operand has 351 states, 229 states have (on average 1.6550218340611353) internal successors, (379), 230 states have internal predecessors, (379), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-15 20:03:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:24,879 INFO L93 Difference]: Finished difference Result 695 states and 1343 transitions. [2023-12-15 20:03:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:03:24,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 2 states have call successors, (119) Word has length 751 [2023-12-15 20:03:24,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:24,895 INFO L225 Difference]: With dead ends: 695 [2023-12-15 20:03:24,896 INFO L226 Difference]: Without dead ends: 345 [2023-12-15 20:03:24,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:03:24,903 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:24,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 592 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:03:24,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-12-15 20:03:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2023-12-15 20:03:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 224 states have (on average 1.59375) internal successors, (357), 224 states have internal predecessors, (357), 119 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-12-15 20:03:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 595 transitions. [2023-12-15 20:03:24,990 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 595 transitions. Word has length 751 [2023-12-15 20:03:24,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:24,991 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 595 transitions. [2023-12-15 20:03:24,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-15 20:03:24,992 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 595 transitions. [2023-12-15 20:03:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-15 20:03:25,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:25,006 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:25,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:03:25,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 20:03:25,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:25,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:25,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1931246043, now seen corresponding path program 1 times [2023-12-15 20:03:25,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:25,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877707632] [2023-12-15 20:03:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:25,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:25,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:25,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010876666] [2023-12-15 20:03:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:25,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:25,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:25,302 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) [2023-12-15 20:03:25,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:03:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:25,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 1670 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:03:25,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:25,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:25,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877707632] [2023-12-15 20:03:25,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:25,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010876666] [2023-12-15 20:03:25,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010876666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:25,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:25,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:03:25,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919552726] [2023-12-15 20:03:25,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:25,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:03:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:03:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:25,780 INFO L87 Difference]: Start difference. First operand 345 states and 595 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:25,889 INFO L93 Difference]: Finished difference Result 901 states and 1559 transitions. [2023-12-15 20:03:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:03:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 751 [2023-12-15 20:03:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:25,898 INFO L225 Difference]: With dead ends: 901 [2023-12-15 20:03:25,898 INFO L226 Difference]: Without dead ends: 557 [2023-12-15 20:03:25,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:25,902 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 336 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:25,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1243 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:03:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-15 20:03:25,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 554. [2023-12-15 20:03:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 379 states have (on average 1.6279683377308707) internal successors, (617), 380 states have internal predecessors, (617), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 171 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-15 20:03:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 961 transitions. [2023-12-15 20:03:25,964 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 961 transitions. Word has length 751 [2023-12-15 20:03:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:25,966 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 961 transitions. [2023-12-15 20:03:25,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 961 transitions. [2023-12-15 20:03:25,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-15 20:03:25,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:25,974 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:25,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:26,184 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,SelfDestructingSolverStorable1 [2023-12-15 20:03:26,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:26,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:26,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1691006297, now seen corresponding path program 1 times [2023-12-15 20:03:26,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:26,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729878988] [2023-12-15 20:03:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:26,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:26,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:26,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098741595] [2023-12-15 20:03:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:26,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:26,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:26,274 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) [2023-12-15 20:03:26,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:03:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:26,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:03:26,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:26,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:26,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:26,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729878988] [2023-12-15 20:03:26,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:26,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098741595] [2023-12-15 20:03:26,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098741595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:26,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:26,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:03:26,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927583490] [2023-12-15 20:03:26,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:26,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:03:26,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:26,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:03:26,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:26,668 INFO L87 Difference]: Start difference. First operand 554 states and 961 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:26,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:26,699 INFO L93 Difference]: Finished difference Result 1109 states and 1925 transitions. [2023-12-15 20:03:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:03:26,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 751 [2023-12-15 20:03:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:26,706 INFO L225 Difference]: With dead ends: 1109 [2023-12-15 20:03:26,706 INFO L226 Difference]: Without dead ends: 556 [2023-12-15 20:03:26,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:26,710 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 0 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:26,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1178 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:03:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-12-15 20:03:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2023-12-15 20:03:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 381 states have (on average 1.6246719160104988) internal successors, (619), 382 states have internal predecessors, (619), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 171 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-15 20:03:26,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 963 transitions. [2023-12-15 20:03:26,746 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 963 transitions. Word has length 751 [2023-12-15 20:03:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:26,747 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 963 transitions. [2023-12-15 20:03:26,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 963 transitions. [2023-12-15 20:03:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-15 20:03:26,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:26,752 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:26,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:26,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:26,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:26,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:26,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1871993573, now seen corresponding path program 1 times [2023-12-15 20:03:26,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:26,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374444308] [2023-12-15 20:03:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:26,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:27,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:27,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109222520] [2023-12-15 20:03:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:27,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:27,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:27,029 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) [2023-12-15 20:03:27,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:03:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:27,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:03:27,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:27,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:27,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:27,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374444308] [2023-12-15 20:03:27,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109222520] [2023-12-15 20:03:27,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109222520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:27,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:27,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:03:27,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620972295] [2023-12-15 20:03:27,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:27,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:03:27,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:27,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:03:27,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:27,468 INFO L87 Difference]: Start difference. First operand 556 states and 963 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:27,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:27,529 INFO L93 Difference]: Finished difference Result 1499 states and 2609 transitions. [2023-12-15 20:03:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:03:27,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 751 [2023-12-15 20:03:27,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:27,534 INFO L225 Difference]: With dead ends: 1499 [2023-12-15 20:03:27,534 INFO L226 Difference]: Without dead ends: 944 [2023-12-15 20:03:27,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:27,538 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 293 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:27,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1153 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:03:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-12-15 20:03:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 940. [2023-12-15 20:03:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 695 states have (on average 1.6546762589928057) internal successors, (1150), 698 states have internal predecessors, (1150), 240 states have call successors, (240), 4 states have call predecessors, (240), 4 states have return successors, (240), 237 states have call predecessors, (240), 240 states have call successors, (240) [2023-12-15 20:03:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1630 transitions. [2023-12-15 20:03:27,592 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1630 transitions. Word has length 751 [2023-12-15 20:03:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:27,594 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1630 transitions. [2023-12-15 20:03:27,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1630 transitions. [2023-12-15 20:03:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-15 20:03:27,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:27,599 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:27,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:27,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:27,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:27,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1069779937, now seen corresponding path program 1 times [2023-12-15 20:03:27,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:27,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637493714] [2023-12-15 20:03:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:27,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:27,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:27,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959576284] [2023-12-15 20:03:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:27,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:27,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:27,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:27,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:03:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:28,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:03:28,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:28,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:28,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637493714] [2023-12-15 20:03:28,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959576284] [2023-12-15 20:03:28,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959576284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:28,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:28,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:03:28,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766254170] [2023-12-15 20:03:28,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:28,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:03:28,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:28,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:03:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:28,236 INFO L87 Difference]: Start difference. First operand 940 states and 1630 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:28,297 INFO L93 Difference]: Finished difference Result 2621 states and 4548 transitions. [2023-12-15 20:03:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:03:28,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 751 [2023-12-15 20:03:28,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:28,305 INFO L225 Difference]: With dead ends: 2621 [2023-12-15 20:03:28,305 INFO L226 Difference]: Without dead ends: 1682 [2023-12-15 20:03:28,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:28,308 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 342 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:28,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1413 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:03:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2023-12-15 20:03:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1678. [2023-12-15 20:03:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1263 states have (on average 1.6595407759303247) internal successors, (2096), 1270 states have internal predecessors, (2096), 406 states have call successors, (406), 8 states have call predecessors, (406), 8 states have return successors, (406), 399 states have call predecessors, (406), 406 states have call successors, (406) [2023-12-15 20:03:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2908 transitions. [2023-12-15 20:03:28,373 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2908 transitions. Word has length 751 [2023-12-15 20:03:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:28,374 INFO L495 AbstractCegarLoop]: Abstraction has 1678 states and 2908 transitions. [2023-12-15 20:03:28,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2908 transitions. [2023-12-15 20:03:28,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-15 20:03:28,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:28,393 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:28,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:28,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:28,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:28,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:28,601 INFO L85 PathProgramCache]: Analyzing trace with hash -163864853, now seen corresponding path program 1 times [2023-12-15 20:03:28,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:28,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989594202] [2023-12-15 20:03:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:28,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:28,658 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:28,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322177557] [2023-12-15 20:03:28,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:28,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:28,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:28,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:28,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:03:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:28,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 1666 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:03:28,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:29,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:29,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:29,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989594202] [2023-12-15 20:03:29,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:29,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322177557] [2023-12-15 20:03:29,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322177557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:29,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:29,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:03:29,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143552511] [2023-12-15 20:03:29,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:29,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:03:29,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:29,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:03:29,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:29,053 INFO L87 Difference]: Start difference. First operand 1678 states and 2908 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:29,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:29,134 INFO L93 Difference]: Finished difference Result 4795 states and 8312 transitions. [2023-12-15 20:03:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:03:29,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 752 [2023-12-15 20:03:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:29,147 INFO L225 Difference]: With dead ends: 4795 [2023-12-15 20:03:29,147 INFO L226 Difference]: Without dead ends: 3118 [2023-12-15 20:03:29,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:29,153 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 301 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:29,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1153 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:03:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2023-12-15 20:03:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 3112. [2023-12-15 20:03:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 2365 states have (on average 1.6583509513742072) internal successors, (3922), 2380 states have internal predecessors, (3922), 730 states have call successors, (730), 16 states have call predecessors, (730), 16 states have return successors, (730), 715 states have call predecessors, (730), 730 states have call successors, (730) [2023-12-15 20:03:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 5382 transitions. [2023-12-15 20:03:29,292 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 5382 transitions. Word has length 752 [2023-12-15 20:03:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:29,293 INFO L495 AbstractCegarLoop]: Abstraction has 3112 states and 5382 transitions. [2023-12-15 20:03:29,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 5382 transitions. [2023-12-15 20:03:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-15 20:03:29,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:29,301 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:29,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:29,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:29,507 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:29,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:29,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1852808595, now seen corresponding path program 1 times [2023-12-15 20:03:29,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:29,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059864282] [2023-12-15 20:03:29,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:29,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:29,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:29,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389907380] [2023-12-15 20:03:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:29,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:29,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:29,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:29,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:03:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:29,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:03:29,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:29,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:29,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059864282] [2023-12-15 20:03:29,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389907380] [2023-12-15 20:03:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389907380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:29,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:29,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:03:29,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608728423] [2023-12-15 20:03:29,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:03:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:03:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:29,910 INFO L87 Difference]: Start difference. First operand 3112 states and 5382 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:30,069 INFO L93 Difference]: Finished difference Result 9302 states and 16080 transitions. [2023-12-15 20:03:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:03:30,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 752 [2023-12-15 20:03:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:30,097 INFO L225 Difference]: With dead ends: 9302 [2023-12-15 20:03:30,098 INFO L226 Difference]: Without dead ends: 6191 [2023-12-15 20:03:30,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:30,109 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 564 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:30,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1569 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:03:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2023-12-15 20:03:30,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 6172. [2023-12-15 20:03:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6172 states, 4679 states have (on average 1.6347510151741824) internal successors, (7649), 4709 states have internal predecessors, (7649), 1460 states have call successors, (1460), 32 states have call predecessors, (1460), 32 states have return successors, (1460), 1430 states have call predecessors, (1460), 1460 states have call successors, (1460) [2023-12-15 20:03:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6172 states to 6172 states and 10569 transitions. [2023-12-15 20:03:30,426 INFO L78 Accepts]: Start accepts. Automaton has 6172 states and 10569 transitions. Word has length 752 [2023-12-15 20:03:30,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:30,426 INFO L495 AbstractCegarLoop]: Abstraction has 6172 states and 10569 transitions. [2023-12-15 20:03:30,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:30,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6172 states and 10569 transitions. [2023-12-15 20:03:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-15 20:03:30,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:30,437 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:30,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:30,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:30,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:30,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1341500333, now seen corresponding path program 1 times [2023-12-15 20:03:30,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:30,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944217429] [2023-12-15 20:03:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:30,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:30,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:30,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093282485] [2023-12-15 20:03:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:30,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:30,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:30,704 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:30,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:03:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:31,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:03:31,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:31,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:31,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:31,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944217429] [2023-12-15 20:03:31,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:31,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093282485] [2023-12-15 20:03:31,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093282485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:31,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:31,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:03:31,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989964936] [2023-12-15 20:03:31,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:31,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:03:31,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:31,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:03:31,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:31,095 INFO L87 Difference]: Start difference. First operand 6172 states and 10569 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:31,349 INFO L93 Difference]: Finished difference Result 18514 states and 31705 transitions. [2023-12-15 20:03:31,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:03:31,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 752 [2023-12-15 20:03:31,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:31,409 INFO L225 Difference]: With dead ends: 18514 [2023-12-15 20:03:31,410 INFO L226 Difference]: Without dead ends: 12343 [2023-12-15 20:03:31,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:03:31,427 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 568 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:31,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1189 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:03:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12343 states. [2023-12-15 20:03:31,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 12341. [2023-12-15 20:03:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12341 states, 9356 states have (on average 1.6246259085079093) internal successors, (15200), 9416 states have internal predecessors, (15200), 2920 states have call successors, (2920), 64 states have call predecessors, (2920), 64 states have return successors, (2920), 2860 states have call predecessors, (2920), 2920 states have call successors, (2920) [2023-12-15 20:03:32,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12341 states to 12341 states and 21040 transitions. [2023-12-15 20:03:32,062 INFO L78 Accepts]: Start accepts. Automaton has 12341 states and 21040 transitions. Word has length 752 [2023-12-15 20:03:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:32,062 INFO L495 AbstractCegarLoop]: Abstraction has 12341 states and 21040 transitions. [2023-12-15 20:03:32,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 12341 states and 21040 transitions. [2023-12-15 20:03:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-15 20:03:32,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:32,075 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:32,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:32,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 20:03:32,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:32,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:32,282 INFO L85 PathProgramCache]: Analyzing trace with hash 330383083, now seen corresponding path program 1 times [2023-12-15 20:03:32,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:32,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708337658] [2023-12-15 20:03:32,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:32,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:32,330 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:32,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665026050] [2023-12-15 20:03:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:32,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:32,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:32,332 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:32,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:03:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:32,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 20:03:32,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:32,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:32,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:32,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708337658] [2023-12-15 20:03:32,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:32,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665026050] [2023-12-15 20:03:32,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665026050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:32,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:32,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:03:32,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500868163] [2023-12-15 20:03:32,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:32,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:03:32,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:32,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:03:32,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:03:32,702 INFO L87 Difference]: Start difference. First operand 12341 states and 21040 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:33,060 INFO L93 Difference]: Finished difference Result 24767 states and 42224 transitions. [2023-12-15 20:03:33,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:03:33,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 752 [2023-12-15 20:03:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:33,091 INFO L225 Difference]: With dead ends: 24767 [2023-12-15 20:03:33,091 INFO L226 Difference]: Without dead ends: 12427 [2023-12-15 20:03:33,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:03:33,116 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 237 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:33,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2004 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:03:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12427 states. [2023-12-15 20:03:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12427 to 8917. [2023-12-15 20:03:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8917 states, 7288 states have (on average 1.6701427003293086) internal successors, (12172), 7316 states have internal predecessors, (12172), 1592 states have call successors, (1592), 36 states have call predecessors, (1592), 36 states have return successors, (1592), 1564 states have call predecessors, (1592), 1592 states have call successors, (1592) [2023-12-15 20:03:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8917 states to 8917 states and 15356 transitions. [2023-12-15 20:03:33,543 INFO L78 Accepts]: Start accepts. Automaton has 8917 states and 15356 transitions. Word has length 752 [2023-12-15 20:03:33,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:33,543 INFO L495 AbstractCegarLoop]: Abstraction has 8917 states and 15356 transitions. [2023-12-15 20:03:33,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:33,544 INFO L276 IsEmpty]: Start isEmpty. Operand 8917 states and 15356 transitions. [2023-12-15 20:03:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-15 20:03:33,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:33,555 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:33,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:33,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:33,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:33,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:33,763 INFO L85 PathProgramCache]: Analyzing trace with hash 55623469, now seen corresponding path program 1 times [2023-12-15 20:03:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:33,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318256705] [2023-12-15 20:03:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:33,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:33,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:33,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110330409] [2023-12-15 20:03:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:33,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:33,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:33,809 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:33,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:03:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:34,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:03:34,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:34,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:34,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:34,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318256705] [2023-12-15 20:03:34,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110330409] [2023-12-15 20:03:34,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110330409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:34,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:34,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:03:34,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109264232] [2023-12-15 20:03:34,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:34,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:03:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:03:34,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:03:34,849 INFO L87 Difference]: Start difference. First operand 8917 states and 15356 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:35,547 INFO L93 Difference]: Finished difference Result 26813 states and 46194 transitions. [2023-12-15 20:03:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:03:35,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 752 [2023-12-15 20:03:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:35,583 INFO L225 Difference]: With dead ends: 26813 [2023-12-15 20:03:35,583 INFO L226 Difference]: Without dead ends: 17897 [2023-12-15 20:03:35,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:03:35,600 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 251 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:35,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1521 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:03:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17897 states. [2023-12-15 20:03:36,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17897 to 17831. [2023-12-15 20:03:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17831 states, 14574 states have (on average 1.6658432825579799) internal successors, (24278), 14630 states have internal predecessors, (24278), 3184 states have call successors, (3184), 72 states have call predecessors, (3184), 72 states have return successors, (3184), 3128 states have call predecessors, (3184), 3184 states have call successors, (3184) [2023-12-15 20:03:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17831 states to 17831 states and 30646 transitions. [2023-12-15 20:03:36,219 INFO L78 Accepts]: Start accepts. Automaton has 17831 states and 30646 transitions. Word has length 752 [2023-12-15 20:03:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:36,219 INFO L495 AbstractCegarLoop]: Abstraction has 17831 states and 30646 transitions. [2023-12-15 20:03:36,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:36,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17831 states and 30646 transitions. [2023-12-15 20:03:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-15 20:03:36,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:36,236 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:36,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:36,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 20:03:36,443 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:36,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1442408879, now seen corresponding path program 1 times [2023-12-15 20:03:36,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:36,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385273210] [2023-12-15 20:03:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:36,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:36,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:36,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709983165] [2023-12-15 20:03:36,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:36,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:36,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:36,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:36,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:03:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:36,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:03:36,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13560 proven. 213 refuted. 0 times theorem prover too weak. 14311 trivial. 0 not checked. [2023-12-15 20:03:37,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:03:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 141 proven. 213 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-15 20:03:37,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385273210] [2023-12-15 20:03:37,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709983165] [2023-12-15 20:03:37,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709983165] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:03:37,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:03:37,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 20:03:37,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373439002] [2023-12-15 20:03:37,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:03:37,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 20:03:37,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 20:03:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 20:03:37,633 INFO L87 Difference]: Start difference. First operand 17831 states and 30646 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 2 states have call predecessors, (191), 2 states have call successors, (191) [2023-12-15 20:03:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:38,573 INFO L93 Difference]: Finished difference Result 27725 states and 47568 transitions. [2023-12-15 20:03:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:03:38,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 2 states have call predecessors, (191), 2 states have call successors, (191) Word has length 752 [2023-12-15 20:03:38,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:38,604 INFO L225 Difference]: With dead ends: 27725 [2023-12-15 20:03:38,604 INFO L226 Difference]: Without dead ends: 9895 [2023-12-15 20:03:38,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1506 GetRequests, 1496 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:03:38,626 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 913 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:38,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1247 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:03:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9895 states. [2023-12-15 20:03:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9895 to 9810. [2023-12-15 20:03:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9810 states, 7816 states have (on average 1.6345957011258956) internal successors, (12776), 7841 states have internal predecessors, (12776), 1935 states have call successors, (1935), 58 states have call predecessors, (1935), 58 states have return successors, (1935), 1910 states have call predecessors, (1935), 1935 states have call successors, (1935) [2023-12-15 20:03:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9810 states to 9810 states and 16646 transitions. [2023-12-15 20:03:39,161 INFO L78 Accepts]: Start accepts. Automaton has 9810 states and 16646 transitions. Word has length 752 [2023-12-15 20:03:39,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:39,162 INFO L495 AbstractCegarLoop]: Abstraction has 9810 states and 16646 transitions. [2023-12-15 20:03:39,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 2 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 2 states have call predecessors, (191), 2 states have call successors, (191) [2023-12-15 20:03:39,162 INFO L276 IsEmpty]: Start isEmpty. Operand 9810 states and 16646 transitions. [2023-12-15 20:03:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-12-15 20:03:39,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:39,175 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:39,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:39,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 20:03:39,380 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:39,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1437289180, now seen corresponding path program 1 times [2023-12-15 20:03:39,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:39,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940097062] [2023-12-15 20:03:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:39,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:39,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792325398] [2023-12-15 20:03:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:39,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:39,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:39,429 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:39,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:03:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:39,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:03:39,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28084 trivial. 0 not checked. [2023-12-15 20:03:39,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:03:39,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:39,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940097062] [2023-12-15 20:03:39,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:39,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792325398] [2023-12-15 20:03:39,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792325398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:03:39,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:03:39,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:03:39,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713149582] [2023-12-15 20:03:39,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:03:39,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:03:39,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:03:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:03:39,882 INFO L87 Difference]: Start difference. First operand 9810 states and 16646 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:40,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:40,980 INFO L93 Difference]: Finished difference Result 35834 states and 60823 transitions. [2023-12-15 20:03:40,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:03:40,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) Word has length 753 [2023-12-15 20:03:40,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:41,046 INFO L225 Difference]: With dead ends: 35834 [2023-12-15 20:03:41,046 INFO L226 Difference]: Without dead ends: 26104 [2023-12-15 20:03:41,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:03:41,066 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 803 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:41,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 2217 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:03:41,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26104 states. [2023-12-15 20:03:41,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26104 to 11475. [2023-12-15 20:03:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11475 states, 9473 states have (on average 1.6435131426158556) internal successors, (15569), 9498 states have internal predecessors, (15569), 1941 states have call successors, (1941), 60 states have call predecessors, (1941), 60 states have return successors, (1941), 1916 states have call predecessors, (1941), 1941 states have call successors, (1941) [2023-12-15 20:03:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11475 states to 11475 states and 19451 transitions. [2023-12-15 20:03:41,742 INFO L78 Accepts]: Start accepts. Automaton has 11475 states and 19451 transitions. Word has length 753 [2023-12-15 20:03:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:41,743 INFO L495 AbstractCegarLoop]: Abstraction has 11475 states and 19451 transitions. [2023-12-15 20:03:41,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (119), 1 states have call predecessors, (119), 1 states have return successors, (119), 1 states have call predecessors, (119), 1 states have call successors, (119) [2023-12-15 20:03:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 11475 states and 19451 transitions. [2023-12-15 20:03:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2023-12-15 20:03:41,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:41,754 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:41,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:41,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 20:03:41,967 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:41,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:41,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2094249757, now seen corresponding path program 1 times [2023-12-15 20:03:41,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:41,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465962933] [2023-12-15 20:03:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:41,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:42,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:42,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494663924] [2023-12-15 20:03:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:42,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:42,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:42,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:42,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 20:03:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:42,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:03:42,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 18552 proven. 135 refuted. 0 times theorem prover too weak. 9397 trivial. 0 not checked. [2023-12-15 20:03:43,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:03:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 219 proven. 135 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-15 20:03:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465962933] [2023-12-15 20:03:43,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494663924] [2023-12-15 20:03:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494663924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:03:43,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:03:43,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 20:03:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441475128] [2023-12-15 20:03:43,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:03:43,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:03:43,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:03:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:03:43,611 INFO L87 Difference]: Start difference. First operand 11475 states and 19451 transitions. Second operand has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 5 states have call successors, (194), 3 states have call predecessors, (194), 5 states have return successors, (194), 5 states have call predecessors, (194), 5 states have call successors, (194) [2023-12-15 20:03:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:44,439 INFO L93 Difference]: Finished difference Result 22969 states and 38864 transitions. [2023-12-15 20:03:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:03:44,440 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 5 states have call successors, (194), 3 states have call predecessors, (194), 5 states have return successors, (194), 5 states have call predecessors, (194), 5 states have call successors, (194) Word has length 754 [2023-12-15 20:03:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:44,469 INFO L225 Difference]: With dead ends: 22969 [2023-12-15 20:03:44,469 INFO L226 Difference]: Without dead ends: 11591 [2023-12-15 20:03:44,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1510 GetRequests, 1498 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:03:44,486 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 1139 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:44,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1097 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:03:44,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11591 states. [2023-12-15 20:03:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11591 to 11507. [2023-12-15 20:03:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11507 states, 9497 states have (on average 1.6351479414551964) internal successors, (15529), 9522 states have internal predecessors, (15529), 1941 states have call successors, (1941), 68 states have call predecessors, (1941), 68 states have return successors, (1941), 1916 states have call predecessors, (1941), 1941 states have call successors, (1941) [2023-12-15 20:03:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11507 states to 11507 states and 19411 transitions. [2023-12-15 20:03:45,063 INFO L78 Accepts]: Start accepts. Automaton has 11507 states and 19411 transitions. Word has length 754 [2023-12-15 20:03:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:45,063 INFO L495 AbstractCegarLoop]: Abstraction has 11507 states and 19411 transitions. [2023-12-15 20:03:45,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 5 states have call successors, (194), 3 states have call predecessors, (194), 5 states have return successors, (194), 5 states have call predecessors, (194), 5 states have call successors, (194) [2023-12-15 20:03:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11507 states and 19411 transitions. [2023-12-15 20:03:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-12-15 20:03:45,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:45,074 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:45,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:45,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 20:03:45,286 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:45,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:45,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1031826372, now seen corresponding path program 1 times [2023-12-15 20:03:45,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:45,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956064846] [2023-12-15 20:03:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:45,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:45,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223338874] [2023-12-15 20:03:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:45,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:45,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:45,326 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:45,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 20:03:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:45,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 20:03:45,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 8460 proven. 63 refuted. 0 times theorem prover too weak. 19561 trivial. 0 not checked. [2023-12-15 20:03:45,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:03:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 291 proven. 63 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-15 20:03:46,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:46,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956064846] [2023-12-15 20:03:46,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:46,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223338874] [2023-12-15 20:03:46,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223338874] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:03:46,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:03:46,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 20:03:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666064387] [2023-12-15 20:03:46,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:03:46,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:03:46,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:46,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:03:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:03:46,350 INFO L87 Difference]: Start difference. First operand 11507 states and 19411 transitions. Second operand has 10 states, 10 states have (on average 25.0) internal successors, (250), 10 states have internal predecessors, (250), 3 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 3 states have call predecessors, (141), 3 states have call successors, (141) [2023-12-15 20:03:51,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 20:03:55,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 20:03:56,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:03:56,170 INFO L93 Difference]: Finished difference Result 31683 states and 53433 transitions. [2023-12-15 20:03:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 20:03:56,172 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.0) internal successors, (250), 10 states have internal predecessors, (250), 3 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 3 states have call predecessors, (141), 3 states have call successors, (141) Word has length 755 [2023-12-15 20:03:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:03:56,211 INFO L225 Difference]: With dead ends: 31683 [2023-12-15 20:03:56,212 INFO L226 Difference]: Without dead ends: 20273 [2023-12-15 20:03:56,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1515 GetRequests, 1500 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2023-12-15 20:03:56,231 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1039 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 361 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:03:56,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 2081 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1168 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2023-12-15 20:03:56,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20273 states. [2023-12-15 20:03:57,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20273 to 20099. [2023-12-15 20:03:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20099 states, 16609 states have (on average 1.640616533204889) internal successors, (27249), 16666 states have internal predecessors, (27249), 3357 states have call successors, (3357), 132 states have call predecessors, (3357), 132 states have return successors, (3357), 3300 states have call predecessors, (3357), 3357 states have call successors, (3357) [2023-12-15 20:03:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20099 states to 20099 states and 33963 transitions. [2023-12-15 20:03:57,199 INFO L78 Accepts]: Start accepts. Automaton has 20099 states and 33963 transitions. Word has length 755 [2023-12-15 20:03:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:03:57,200 INFO L495 AbstractCegarLoop]: Abstraction has 20099 states and 33963 transitions. [2023-12-15 20:03:57,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.0) internal successors, (250), 10 states have internal predecessors, (250), 3 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 3 states have call predecessors, (141), 3 states have call successors, (141) [2023-12-15 20:03:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 20099 states and 33963 transitions. [2023-12-15 20:03:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-12-15 20:03:57,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:03:57,216 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:03:57,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 20:03:57,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:57,425 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:03:57,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:03:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash -550746114, now seen corresponding path program 1 times [2023-12-15 20:03:57,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:03:57,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743157807] [2023-12-15 20:03:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:57,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:03:57,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:03:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851820716] [2023-12-15 20:03:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:03:57,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:03:57,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:03:57,466 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:03:57,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 20:03:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:03:57,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 20:03:57,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:03:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 13168 proven. 129 refuted. 0 times theorem prover too weak. 14787 trivial. 0 not checked. [2023-12-15 20:03:58,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:03:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 225 proven. 129 refuted. 0 times theorem prover too weak. 27730 trivial. 0 not checked. [2023-12-15 20:03:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:03:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743157807] [2023-12-15 20:03:58,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:03:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851820716] [2023-12-15 20:03:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851820716] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:03:58,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:03:58,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-15 20:03:58,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623303772] [2023-12-15 20:03:58,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:03:58,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:03:58,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:03:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:03:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:03:58,732 INFO L87 Difference]: Start difference. First operand 20099 states and 33963 transitions. Second operand has 16 states, 16 states have (on average 15.5625) internal successors, (249), 16 states have internal predecessors, (249), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) [2023-12-15 20:04:01,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 20:04:10,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:04:10,139 INFO L93 Difference]: Finished difference Result 92927 states and 154559 transitions. [2023-12-15 20:04:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-15 20:04:10,140 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.5625) internal successors, (249), 16 states have internal predecessors, (249), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) Word has length 755 [2023-12-15 20:04:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:04:10,381 INFO L225 Difference]: With dead ends: 92927 [2023-12-15 20:04:10,381 INFO L226 Difference]: Without dead ends: 72925 [2023-12-15 20:04:10,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1501 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1047, Invalid=3645, Unknown=0, NotChecked=0, Total=4692 [2023-12-15 20:04:10,415 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 4463 mSDsluCounter, 4745 mSDsCounter, 0 mSdLazyCounter, 4204 mSolverCounterSat, 3214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4542 SdHoareTripleChecker+Valid, 5453 SdHoareTripleChecker+Invalid, 7418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3214 IncrementalHoareTripleChecker+Valid, 4204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:04:10,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4542 Valid, 5453 Invalid, 7418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3214 Valid, 4204 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-15 20:04:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72925 states. [2023-12-15 20:04:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72925 to 24939. [2023-12-15 20:04:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24939 states, 21441 states have (on average 1.6507159181008348) internal successors, (35393), 21498 states have internal predecessors, (35393), 3357 states have call successors, (3357), 140 states have call predecessors, (3357), 140 states have return successors, (3357), 3300 states have call predecessors, (3357), 3357 states have call successors, (3357) [2023-12-15 20:04:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24939 states to 24939 states and 42107 transitions. [2023-12-15 20:04:12,950 INFO L78 Accepts]: Start accepts. Automaton has 24939 states and 42107 transitions. Word has length 755 [2023-12-15 20:04:12,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:04:12,950 INFO L495 AbstractCegarLoop]: Abstraction has 24939 states and 42107 transitions. [2023-12-15 20:04:12,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.5625) internal successors, (249), 16 states have internal predecessors, (249), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) [2023-12-15 20:04:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 24939 states and 42107 transitions. [2023-12-15 20:04:12,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-12-15 20:04:12,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:04:12,966 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:12,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 20:04:13,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 20:04:13,167 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:04:13,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:04:13,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1448139392, now seen corresponding path program 1 times [2023-12-15 20:04:13,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:04:13,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529059637] [2023-12-15 20:04:13,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:13,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:04:13,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:04:13,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078584725] [2023-12-15 20:04:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:04:13,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:04:13,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:04:13,233 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:04:13,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 20:04:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:04:13,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:04:13,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:04:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 7752 proven. 618 refuted. 0 times theorem prover too weak. 19714 trivial. 0 not checked. [2023-12-15 20:04:15,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:04:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 28084 backedges. 84 proven. 621 refuted. 0 times theorem prover too weak. 27379 trivial. 0 not checked. [2023-12-15 20:04:15,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:04:15,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529059637] [2023-12-15 20:04:15,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:04:15,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078584725] [2023-12-15 20:04:15,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078584725] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:04:15,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:04:15,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-15 20:04:15,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142660450] [2023-12-15 20:04:15,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:04:15,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 20:04:15,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:04:15,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 20:04:15,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-12-15 20:04:15,870 INFO L87 Difference]: Start difference. First operand 24939 states and 42107 transitions. Second operand has 16 states, 16 states have (on average 20.6875) internal successors, (331), 16 states have internal predecessors, (331), 5 states have call successors, (227), 3 states have call predecessors, (227), 7 states have return successors, (228), 5 states have call predecessors, (228), 5 states have call successors, (228) [2023-12-15 20:04:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:04:19,615 INFO L93 Difference]: Finished difference Result 76623 states and 127642 transitions. [2023-12-15 20:04:19,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-15 20:04:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.6875) internal successors, (331), 16 states have internal predecessors, (331), 5 states have call successors, (227), 3 states have call predecessors, (227), 7 states have return successors, (228), 5 states have call predecessors, (228), 5 states have call successors, (228) Word has length 755 [2023-12-15 20:04:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:04:19,715 INFO L225 Difference]: With dead ends: 76623 [2023-12-15 20:04:19,715 INFO L226 Difference]: Without dead ends: 51781 [2023-12-15 20:04:19,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1498 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=442, Invalid=964, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 20:04:19,757 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 808 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:04:19,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 2921 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 20:04:19,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51781 states. [2023-12-15 20:04:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51781 to 31255. [2023-12-15 20:04:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31255 states, 24554 states have (on average 1.570823491080883) internal successors, (38570), 24675 states have internal predecessors, (38570), 6077 states have call successors, (6077), 623 states have call predecessors, (6077), 623 states have return successors, (6077), 5956 states have call predecessors, (6077), 6077 states have call successors, (6077) [2023-12-15 20:04:22,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31255 states to 31255 states and 50724 transitions. [2023-12-15 20:04:22,755 INFO L78 Accepts]: Start accepts. Automaton has 31255 states and 50724 transitions. Word has length 755 [2023-12-15 20:04:22,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:04:22,756 INFO L495 AbstractCegarLoop]: Abstraction has 31255 states and 50724 transitions. [2023-12-15 20:04:22,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 20.6875) internal successors, (331), 16 states have internal predecessors, (331), 5 states have call successors, (227), 3 states have call predecessors, (227), 7 states have return successors, (228), 5 states have call predecessors, (228), 5 states have call successors, (228) [2023-12-15 20:04:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand 31255 states and 50724 transitions. [2023-12-15 20:04:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-12-15 20:04:22,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:04:22,843 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:22,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 Received shutdown request... [2023-12-15 20:04:23,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 20:04:23,045 WARN L619 AbstractCegarLoop]: Verification canceled: while executing NwaCegarLoop. [2023-12-15 20:04:23,046 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:04:23,049 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:04:23,050 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:04:23,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:04:23 BoogieIcfgContainer [2023-12-15 20:04:23,052 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:04:23,052 INFO L158 Benchmark]: Toolchain (without parser) took 60750.65ms. Allocated memory was 202.4MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 166.7MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-15 20:04:23,052 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 202.4MB. Free memory is still 159.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:04:23,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.46ms. Allocated memory is still 202.4MB. Free memory was 166.4MB in the beginning and 133.9MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 20:04:23,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.38ms. Allocated memory is still 202.4MB. Free memory was 133.9MB in the beginning and 118.5MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 20:04:23,053 INFO L158 Benchmark]: Boogie Preprocessor took 127.96ms. Allocated memory was 202.4MB in the beginning and 257.9MB in the end (delta: 55.6MB). Free memory was 118.5MB in the beginning and 206.9MB in the end (delta: -88.4MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. [2023-12-15 20:04:23,053 INFO L158 Benchmark]: RCFGBuilder took 972.49ms. Allocated memory is still 257.9MB. Free memory was 206.9MB in the beginning and 146.6MB in the end (delta: 60.3MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. [2023-12-15 20:04:23,053 INFO L158 Benchmark]: TraceAbstraction took 59181.73ms. Allocated memory was 257.9MB in the beginning and 2.9GB in the end (delta: 2.6GB). Free memory was 146.1MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 997.7MB. Max. memory is 8.0GB. [2023-12-15 20:04:23,065 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 202.4MB. Free memory is still 159.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 368.46ms. Allocated memory is still 202.4MB. Free memory was 166.4MB in the beginning and 133.9MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 94.38ms. Allocated memory is still 202.4MB. Free memory was 133.9MB in the beginning and 118.5MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 127.96ms. Allocated memory was 202.4MB in the beginning and 257.9MB in the end (delta: 55.6MB). Free memory was 118.5MB in the beginning and 206.9MB in the end (delta: -88.4MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. * RCFGBuilder took 972.49ms. Allocated memory is still 257.9MB. Free memory was 206.9MB in the beginning and 146.6MB in the end (delta: 60.3MB). Peak memory consumption was 64.0MB. Max. memory is 8.0GB. * TraceAbstraction took 59181.73ms. Allocated memory was 257.9MB in the beginning and 2.9GB in the end (delta: 2.6GB). Free memory was 146.1MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 997.7MB. 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 executing NwaCegarLoop. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 351 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.1s, OverallIterations: 16, TraceHistogramMax: 119, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 30.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 12425 SdHoareTripleChecker+Valid, 18.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12057 mSDsluCounter, 28031 SdHoareTripleChecker+Invalid, 17.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17058 mSDsCounter, 4602 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9431 IncrementalHoareTripleChecker+Invalid, 14035 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4602 mSolverCounterUnsat, 10973 mSDtfsCounter, 9431 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15893 GetRequests, 15738 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1810 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31255occurred in iteration=16, InterpolantAutomatonStates: 157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 87098 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 12790 NumberOfCodeBlocks, 12790 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 15789 ConstructedInterpolants, 0 QuantifiedInterpolants, 34392 SizeOfPredicates, 34 NumberOfNonLiveVariables, 26646 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 21 InterpolantComputations, 11 PerfectInterpolantSequences, 587445/589764 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