/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:34:02,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:34:02,312 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 21:34:02,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:34:02,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:34:02,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:34:02,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:34:02,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:34:02,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:34:02,334 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:34:02,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:34:02,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:34:02,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:34:02,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:34:02,336 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:34:02,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:34:02,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:34:02,336 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:34:02,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:34:02,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:34:02,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:34:02,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:34:02,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:34:02,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:34:02,338 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:34:02,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:34:02,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:34:02,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:34:02,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:34:02,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:34:02,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:34:02,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:34:02,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:34:02,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:34:02,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:34:02,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:34:02,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:34:02,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:34:02,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:34:02,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:34:02,342 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:34:02,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:34:02,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:34:02,342 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:34:02,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:34:02,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:34:02,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:34:02,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:34:02,578 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:34:02,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i [2023-12-15 21:34:03,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:34:03,886 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:34:03,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i [2023-12-15 21:34:03,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650b22b82/ba86ca5a9f084df0b134d4e18fe14a0a/FLAGb02125d19 [2023-12-15 21:34:03,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650b22b82/ba86ca5a9f084df0b134d4e18fe14a0a [2023-12-15 21:34:03,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:34:03,911 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:34:03,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:34:03,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:34:03,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:34:03,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:34:03" (1/1) ... [2023-12-15 21:34:03,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e93cb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:03, skipping insertion in model container [2023-12-15 21:34:03,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:34:03" (1/1) ... [2023-12-15 21:34:03,962 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:34:04,047 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i[917,930] [2023-12-15 21:34:04,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:34:04,093 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:34:04,101 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-58.i[917,930] [2023-12-15 21:34:04,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:34:04,137 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:34:04,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04 WrapperNode [2023-12-15 21:34:04,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:34:04,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:34:04,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:34:04,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:34:04,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,203 INFO L138 Inliner]: procedures = 26, calls = 156, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 455 [2023-12-15 21:34:04,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:34:04,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:34:04,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:34:04,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:34:04,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,242 INFO L175 MemorySlicer]: Split 125 memory accesses to 6 slices as follows [2, 6, 11, 7, 74, 25]. 59 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 1, 1, 1, 6, 2]. The 15 writes are split as follows [0, 1, 1, 3, 8, 2]. [2023-12-15 21:34:04,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,252 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:34:04,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:34:04,263 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:34:04,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:34:04,263 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (1/1) ... [2023-12-15 21:34:04,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:34:04,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:04,312 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 21:34:04,333 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 21:34:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:34:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:34:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:34:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 21:34:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-15 21:34:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-15 21:34:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-15 21:34:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:34:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:34:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 21:34:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-15 21:34:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-15 21:34:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-15 21:34:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:34:04,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:34:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:34:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:34:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 21:34:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 21:34:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 21:34:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-15 21:34:04,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:34:04,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:34:04,456 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:34:04,458 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:34:04,860 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:34:04,890 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:34:04,891 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:34:04,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:34:04 BoogieIcfgContainer [2023-12-15 21:34:04,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:34:04,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:34:04,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:34:04,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:34:04,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:34:03" (1/3) ... [2023-12-15 21:34:04,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e990c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:34:04, skipping insertion in model container [2023-12-15 21:34:04,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:34:04" (2/3) ... [2023-12-15 21:34:04,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e990c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:34:04, skipping insertion in model container [2023-12-15 21:34:04,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:34:04" (3/3) ... [2023-12-15 21:34:04,900 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-58.i [2023-12-15 21:34:04,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:34:04,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:34:04,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:34:04,955 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;@6871805d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:34:04,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:34:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 68 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 21:34:04,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:34:04,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:04,970 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:04,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:04,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1754605643, now seen corresponding path program 1 times [2023-12-15 21:34:04,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:04,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139600624] [2023-12-15 21:34:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:04,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:05,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:05,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139600624] [2023-12-15 21:34:05,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:34:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100887788] [2023-12-15 21:34:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:05,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:05,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:05,166 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 21:34:05,188 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 21:34:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:05,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:34:05,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-12-15 21:34:05,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:05,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100887788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:05,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:05,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:34:05,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458079722] [2023-12-15 21:34:05,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:05,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:34:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:34:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:34:05,420 INFO L87 Difference]: Start difference. First operand has 85 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 68 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 21:34:05,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:05,474 INFO L93 Difference]: Finished difference Result 163 states and 259 transitions. [2023-12-15 21:34:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:34:05,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2023-12-15 21:34:05,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:05,480 INFO L225 Difference]: With dead ends: 163 [2023-12-15 21:34:05,481 INFO L226 Difference]: Without dead ends: 79 [2023-12-15 21:34:05,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 110 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 21:34:05,485 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:05,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:34:05,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-15 21:34:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-15 21:34:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 21:34:05,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 113 transitions. [2023-12-15 21:34:05,512 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 113 transitions. Word has length 111 [2023-12-15 21:34:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:05,512 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 113 transitions. [2023-12-15 21:34:05,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-15 21:34:05,513 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 113 transitions. [2023-12-15 21:34:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:34:05,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:05,515 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:05,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:34:05,721 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 21:34:05,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:05,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1691531369, now seen corresponding path program 1 times [2023-12-15 21:34:05,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:05,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054665415] [2023-12-15 21:34:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:05,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:05,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:05,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452436730] [2023-12-15 21:34:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:05,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:05,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:05,864 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 21:34:05,916 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 21:34:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:06,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:34:06,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:06,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:06,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:06,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054665415] [2023-12-15 21:34:06,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:06,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452436730] [2023-12-15 21:34:06,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452436730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:06,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:06,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:34:06,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558118197] [2023-12-15 21:34:06,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:06,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:34:06,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:34:06,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:34:06,154 INFO L87 Difference]: Start difference. First operand 79 states and 113 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:06,210 INFO L93 Difference]: Finished difference Result 161 states and 230 transitions. [2023-12-15 21:34:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:34:06,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:34:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:06,215 INFO L225 Difference]: With dead ends: 161 [2023-12-15 21:34:06,215 INFO L226 Difference]: Without dead ends: 83 [2023-12-15 21:34:06,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 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 21:34:06,219 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 3 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:06,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 315 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:34:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-15 21:34:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2023-12-15 21:34:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 64 states have (on average 1.328125) internal successors, (85), 64 states have internal predecessors, (85), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 21:34:06,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 115 transitions. [2023-12-15 21:34:06,233 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 115 transitions. Word has length 111 [2023-12-15 21:34:06,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:06,234 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 115 transitions. [2023-12-15 21:34:06,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 115 transitions. [2023-12-15 21:34:06,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:34:06,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:06,236 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:06,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 21:34:06,442 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 21:34:06,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:06,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:06,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1691590951, now seen corresponding path program 1 times [2023-12-15 21:34:06,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:06,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285487611] [2023-12-15 21:34:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:06,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:06,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:06,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245395031] [2023-12-15 21:34:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:06,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:06,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:06,480 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 21:34:06,496 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 21:34:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:06,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-15 21:34:06,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:07,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-15 21:34:07,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:07,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-12-15 21:34:07,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:07,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2023-12-15 21:34:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:34:07,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:34:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:07,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:07,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285487611] [2023-12-15 21:34:07,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:07,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245395031] [2023-12-15 21:34:07,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245395031] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:34:07,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:34:07,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-15 21:34:07,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362211476] [2023-12-15 21:34:07,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:07,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:34:07,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:07,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:34:07,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:34:07,532 INFO L87 Difference]: Start difference. First operand 81 states and 115 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:07,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:07,710 INFO L93 Difference]: Finished difference Result 237 states and 334 transitions. [2023-12-15 21:34:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:34:07,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:34:07,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:07,711 INFO L225 Difference]: With dead ends: 237 [2023-12-15 21:34:07,712 INFO L226 Difference]: Without dead ends: 157 [2023-12-15 21:34:07,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:34:07,713 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 181 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:07,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 466 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:34:07,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-15 21:34:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 135. [2023-12-15 21:34:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 112 states have (on average 1.3392857142857142) internal successors, (150), 113 states have internal predecessors, (150), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:34:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 190 transitions. [2023-12-15 21:34:07,721 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 190 transitions. Word has length 111 [2023-12-15 21:34:07,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:07,721 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 190 transitions. [2023-12-15 21:34:07,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:07,721 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 190 transitions. [2023-12-15 21:34:07,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:34:07,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:07,723 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:07,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 21:34:07,928 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 21:34:07,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:07,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1902311767, now seen corresponding path program 1 times [2023-12-15 21:34:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:07,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65846577] [2023-12-15 21:34:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:07,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:07,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801191693] [2023-12-15 21:34:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:07,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:07,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:07,952 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 21:34:07,968 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 21:34:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:08,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-15 21:34:08,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:09,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-15 21:34:09,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:09,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:09,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:09,695 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-12-15 21:34:09,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2023-12-15 21:34:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:09,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:09,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:09,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65846577] [2023-12-15 21:34:09,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:09,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801191693] [2023-12-15 21:34:09,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801191693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:09,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:09,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:34:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127778077] [2023-12-15 21:34:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:09,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:34:09,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:34:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:34:09,794 INFO L87 Difference]: Start difference. First operand 135 states and 190 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:10,436 INFO L93 Difference]: Finished difference Result 304 states and 425 transitions. [2023-12-15 21:34:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:34:10,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:34:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:10,440 INFO L225 Difference]: With dead ends: 304 [2023-12-15 21:34:10,441 INFO L226 Difference]: Without dead ends: 170 [2023-12-15 21:34:10,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:34:10,446 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 260 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:10,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 200 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:34:10,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-15 21:34:10,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 134. [2023-12-15 21:34:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 112 states have internal predecessors, (148), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 21:34:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 188 transitions. [2023-12-15 21:34:10,470 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 188 transitions. Word has length 111 [2023-12-15 21:34:10,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:10,470 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 188 transitions. [2023-12-15 21:34:10,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 188 transitions. [2023-12-15 21:34:10,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:34:10,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:10,477 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:10,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 21:34:10,677 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 21:34:10,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:10,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1992225650, now seen corresponding path program 1 times [2023-12-15 21:34:10,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:10,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738386269] [2023-12-15 21:34:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:10,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:10,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300435231] [2023-12-15 21:34:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:10,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:10,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:10,715 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 21:34:10,760 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 21:34:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:10,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:34:10,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:10,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-15 21:34:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:10,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:10,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738386269] [2023-12-15 21:34:10,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300435231] [2023-12-15 21:34:10,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300435231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:10,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:10,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:34:10,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797294800] [2023-12-15 21:34:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:10,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:34:10,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:34:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:34:10,905 INFO L87 Difference]: Start difference. First operand 134 states and 188 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:11,022 INFO L93 Difference]: Finished difference Result 366 states and 512 transitions. [2023-12-15 21:34:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:34:11,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:34:11,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:11,025 INFO L225 Difference]: With dead ends: 366 [2023-12-15 21:34:11,025 INFO L226 Difference]: Without dead ends: 233 [2023-12-15 21:34:11,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:34:11,028 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 151 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:11,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 466 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:34:11,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-15 21:34:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 209. [2023-12-15 21:34:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 166 states have (on average 1.2951807228915662) internal successors, (215), 169 states have internal predecessors, (215), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 21:34:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 291 transitions. [2023-12-15 21:34:11,054 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 291 transitions. Word has length 111 [2023-12-15 21:34:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:11,055 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 291 transitions. [2023-12-15 21:34:11,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 291 transitions. [2023-12-15 21:34:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:34:11,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:11,056 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:11,068 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 21:34:11,262 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 21:34:11,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:11,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash 670522597, now seen corresponding path program 1 times [2023-12-15 21:34:11,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:11,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786081750] [2023-12-15 21:34:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:11,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:11,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:11,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598569980] [2023-12-15 21:34:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:11,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:11,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:11,314 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 21:34:11,337 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 21:34:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:11,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-15 21:34:11,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:12,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-15 21:34:12,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:12,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:12,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:12,970 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-12-15 21:34:12,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 41 [2023-12-15 21:34:13,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:13,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:13,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:13,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:34:13,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 49 [2023-12-15 21:34:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:13,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:13,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:13,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786081750] [2023-12-15 21:34:13,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:13,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598569980] [2023-12-15 21:34:13,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598569980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:13,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:13,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:34:13,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538956870] [2023-12-15 21:34:13,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:13,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:34:13,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:34:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:34:13,195 INFO L87 Difference]: Start difference. First operand 209 states and 291 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:13,760 INFO L93 Difference]: Finished difference Result 432 states and 599 transitions. [2023-12-15 21:34:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:34:13,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:34:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:13,762 INFO L225 Difference]: With dead ends: 432 [2023-12-15 21:34:13,762 INFO L226 Difference]: Without dead ends: 238 [2023-12-15 21:34:13,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:34:13,763 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 203 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:13,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 383 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:34:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-15 21:34:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 178. [2023-12-15 21:34:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 140 states have (on average 1.2785714285714285) internal successors, (179), 142 states have internal predecessors, (179), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 21:34:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 245 transitions. [2023-12-15 21:34:13,775 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 245 transitions. Word has length 111 [2023-12-15 21:34:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:13,776 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 245 transitions. [2023-12-15 21:34:13,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 245 transitions. [2023-12-15 21:34:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:34:13,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:13,777 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:13,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 21:34:13,983 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 21:34:13,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:13,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1371587175, now seen corresponding path program 1 times [2023-12-15 21:34:13,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:13,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927790370] [2023-12-15 21:34:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:13,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:14,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163798488] [2023-12-15 21:34:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:14,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:14,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:14,002 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 21:34:14,033 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 21:34:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:14,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-15 21:34:14,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:14,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-15 21:34:14,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:14,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-12-15 21:34:14,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:14,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2023-12-15 21:34:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:34:14,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:34:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:14,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:14,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927790370] [2023-12-15 21:34:14,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:14,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163798488] [2023-12-15 21:34:14,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163798488] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:34:14,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:34:14,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-15 21:34:14,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450260761] [2023-12-15 21:34:14,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:14,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:34:14,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:14,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:34:14,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:34:14,880 INFO L87 Difference]: Start difference. First operand 178 states and 245 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:15,047 INFO L93 Difference]: Finished difference Result 379 states and 521 transitions. [2023-12-15 21:34:15,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:34:15,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 111 [2023-12-15 21:34:15,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:15,068 INFO L225 Difference]: With dead ends: 379 [2023-12-15 21:34:15,068 INFO L226 Difference]: Without dead ends: 216 [2023-12-15 21:34:15,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:34:15,069 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 128 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:15,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 597 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:34:15,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-15 21:34:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 175. [2023-12-15 21:34:15,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 139 states have internal predecessors, (175), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 21:34:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 241 transitions. [2023-12-15 21:34:15,081 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 241 transitions. Word has length 111 [2023-12-15 21:34:15,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:15,081 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 241 transitions. [2023-12-15 21:34:15,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 241 transitions. [2023-12-15 21:34:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:34:15,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:15,083 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:15,092 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 21:34:15,288 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 21:34:15,288 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:15,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2139225415, now seen corresponding path program 1 times [2023-12-15 21:34:15,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:15,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428307324] [2023-12-15 21:34:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:15,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:15,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301181655] [2023-12-15 21:34:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:15,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:15,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:15,313 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 21:34:15,355 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 21:34:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:15,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:34:15,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:15,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-15 21:34:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:15,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428307324] [2023-12-15 21:34:15,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301181655] [2023-12-15 21:34:15,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301181655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:15,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:15,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:34:15,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449248038] [2023-12-15 21:34:15,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:15,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:34:15,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:15,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:34:15,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:34:15,494 INFO L87 Difference]: Start difference. First operand 175 states and 241 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:15,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:15,620 INFO L93 Difference]: Finished difference Result 340 states and 465 transitions. [2023-12-15 21:34:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:34:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:34:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:15,621 INFO L225 Difference]: With dead ends: 340 [2023-12-15 21:34:15,621 INFO L226 Difference]: Without dead ends: 180 [2023-12-15 21:34:15,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:34:15,622 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 121 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:15,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 395 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:34:15,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-15 21:34:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2023-12-15 21:34:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 138 states have (on average 1.2608695652173914) internal successors, (174), 140 states have internal predecessors, (174), 33 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 21:34:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 240 transitions. [2023-12-15 21:34:15,635 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 240 transitions. Word has length 112 [2023-12-15 21:34:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:15,635 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 240 transitions. [2023-12-15 21:34:15,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 240 transitions. [2023-12-15 21:34:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:34:15,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:15,636 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:15,644 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 21:34:15,842 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 21:34:15,842 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:15,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1838590716, now seen corresponding path program 1 times [2023-12-15 21:34:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:15,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461331364] [2023-12-15 21:34:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:15,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:15,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:15,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504374887] [2023-12-15 21:34:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:15,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:15,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:15,862 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 21:34:15,865 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 21:34:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:15,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-15 21:34:15,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:17,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-15 21:34:17,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:17,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:17,078 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-15 21:34:17,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-15 21:34:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:17,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:17,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461331364] [2023-12-15 21:34:17,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:17,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504374887] [2023-12-15 21:34:17,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504374887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:17,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:17,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:34:17,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326576768] [2023-12-15 21:34:17,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:17,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:34:17,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:17,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:34:17,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:34:17,130 INFO L87 Difference]: Start difference. First operand 177 states and 240 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:17,526 INFO L93 Difference]: Finished difference Result 392 states and 532 transitions. [2023-12-15 21:34:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:34:17,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:34:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:17,527 INFO L225 Difference]: With dead ends: 392 [2023-12-15 21:34:17,527 INFO L226 Difference]: Without dead ends: 230 [2023-12-15 21:34:17,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:34:17,528 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 246 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:17,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 261 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 369 Invalid, 1 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:34:17,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-15 21:34:17,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 213. [2023-12-15 21:34:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 174 states have (on average 1.2873563218390804) internal successors, (224), 176 states have internal predecessors, (224), 33 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 21:34:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2023-12-15 21:34:17,542 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 112 [2023-12-15 21:34:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:17,542 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2023-12-15 21:34:17,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2023-12-15 21:34:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:34:17,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:17,543 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:17,551 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 21:34:17,744 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 21:34:17,744 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:17,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:17,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1755312002, now seen corresponding path program 1 times [2023-12-15 21:34:17,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:17,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899931642] [2023-12-15 21:34:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:17,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:17,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:17,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951708730] [2023-12-15 21:34:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:17,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:17,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:17,779 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 21:34:17,792 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 21:34:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:17,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-15 21:34:17,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:18,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-15 21:34:18,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:18,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-15 21:34:18,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:18,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-15 21:34:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:34:18,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:34:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:18,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899931642] [2023-12-15 21:34:18,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951708730] [2023-12-15 21:34:18,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951708730] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:34:18,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:34:18,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-15 21:34:18,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979656493] [2023-12-15 21:34:18,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:18,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:34:18,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:18,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:34:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:34:18,666 INFO L87 Difference]: Start difference. First operand 213 states and 290 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:18,953 INFO L93 Difference]: Finished difference Result 481 states and 651 transitions. [2023-12-15 21:34:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:34:18,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:34:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:18,954 INFO L225 Difference]: With dead ends: 481 [2023-12-15 21:34:18,954 INFO L226 Difference]: Without dead ends: 269 [2023-12-15 21:34:18,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2023-12-15 21:34:18,955 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 174 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:18,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 709 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:34:18,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-15 21:34:18,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 213. [2023-12-15 21:34:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 174 states have (on average 1.2816091954022988) internal successors, (223), 176 states have internal predecessors, (223), 33 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-15 21:34:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 289 transitions. [2023-12-15 21:34:18,968 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 289 transitions. Word has length 112 [2023-12-15 21:34:18,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:18,968 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 289 transitions. [2023-12-15 21:34:18,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 289 transitions. [2023-12-15 21:34:18,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:34:18,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:18,969 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:18,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 21:34:19,170 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 21:34:19,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:19,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:19,170 INFO L85 PathProgramCache]: Analyzing trace with hash 868028678, now seen corresponding path program 1 times [2023-12-15 21:34:19,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:19,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186642546] [2023-12-15 21:34:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:19,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:19,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:19,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43138608] [2023-12-15 21:34:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:19,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:19,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:19,189 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 21:34:19,197 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 21:34:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:19,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-15 21:34:19,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:19,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-15 21:34:19,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:19,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-15 21:34:19,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:19,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-15 21:34:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:34:19,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:34:20,124 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-15 21:34:20,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 430 treesize of output 402 [2023-12-15 21:34:20,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 150 [2023-12-15 21:34:20,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 146 [2023-12-15 21:34:20,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-15 21:34:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:20,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:20,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186642546] [2023-12-15 21:34:20,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:20,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43138608] [2023-12-15 21:34:20,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43138608] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:34:20,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:34:20,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-12-15 21:34:20,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322899608] [2023-12-15 21:34:20,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:20,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:34:20,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:20,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:34:20,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:34:20,723 INFO L87 Difference]: Start difference. First operand 213 states and 289 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:21,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:21,241 INFO L93 Difference]: Finished difference Result 454 states and 613 transitions. [2023-12-15 21:34:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:34:21,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:34:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:21,242 INFO L225 Difference]: With dead ends: 454 [2023-12-15 21:34:21,242 INFO L226 Difference]: Without dead ends: 242 [2023-12-15 21:34:21,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 173 SyntacticMatches, 33 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:34:21,243 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 269 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:21,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 526 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:34:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-15 21:34:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 125. [2023-12-15 21:34:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 106 states have (on average 1.2924528301886793) internal successors, (137), 106 states have internal predecessors, (137), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 21:34:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 167 transitions. [2023-12-15 21:34:21,253 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 167 transitions. Word has length 112 [2023-12-15 21:34:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:21,254 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 167 transitions. [2023-12-15 21:34:21,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 167 transitions. [2023-12-15 21:34:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:34:21,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:21,255 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:21,260 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 21:34:21,460 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 21:34:21,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:21,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:21,461 INFO L85 PathProgramCache]: Analyzing trace with hash 166964100, now seen corresponding path program 1 times [2023-12-15 21:34:21,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:21,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176409414] [2023-12-15 21:34:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:21,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:21,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:21,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820315502] [2023-12-15 21:34:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:21,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:21,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:21,479 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 21:34:21,509 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 21:34:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:21,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-15 21:34:21,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:22,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-15 21:34:22,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:22,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:22,499 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-15 21:34:22,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-12-15 21:34:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:22,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:34:22,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:22,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176409414] [2023-12-15 21:34:22,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:22,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820315502] [2023-12-15 21:34:22,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820315502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:34:22,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:34:22,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 21:34:22,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026226291] [2023-12-15 21:34:22,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:22,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:34:22,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:34:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:34:22,544 INFO L87 Difference]: Start difference. First operand 125 states and 167 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:22,962 INFO L93 Difference]: Finished difference Result 287 states and 382 transitions. [2023-12-15 21:34:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:34:22,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-12-15 21:34:22,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:22,963 INFO L225 Difference]: With dead ends: 287 [2023-12-15 21:34:22,963 INFO L226 Difference]: Without dead ends: 163 [2023-12-15 21:34:22,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:34:22,964 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 204 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:22,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 314 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 409 Invalid, 1 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:34:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-15 21:34:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 122. [2023-12-15 21:34:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 103 states have (on average 1.2815533980582525) internal successors, (132), 103 states have internal predecessors, (132), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 21:34:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 162 transitions. [2023-12-15 21:34:22,973 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 162 transitions. Word has length 112 [2023-12-15 21:34:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:22,974 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 162 transitions. [2023-12-15 21:34:22,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 162 transitions. [2023-12-15 21:34:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-15 21:34:22,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:22,974 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:22,987 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 21:34:23,184 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 21:34:23,184 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:23,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash -790043146, now seen corresponding path program 1 times [2023-12-15 21:34:23,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:23,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861451402] [2023-12-15 21:34:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:23,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:23,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596140231] [2023-12-15 21:34:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:23,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:23,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:23,201 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 21:34:23,208 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 21:34:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:23,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 21:34:23,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:23,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-12-15 21:34:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-15 21:34:23,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:34:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:23,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:23,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861451402] [2023-12-15 21:34:23,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:23,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596140231] [2023-12-15 21:34:23,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596140231] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:34:23,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:34:23,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2023-12-15 21:34:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244043869] [2023-12-15 21:34:23,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:23,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:34:23,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:34:23,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:34:23,463 INFO L87 Difference]: Start difference. First operand 122 states and 162 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:23,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:34:23,653 INFO L93 Difference]: Finished difference Result 305 states and 400 transitions. [2023-12-15 21:34:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:34:23,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 113 [2023-12-15 21:34:23,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:34:23,655 INFO L225 Difference]: With dead ends: 305 [2023-12-15 21:34:23,655 INFO L226 Difference]: Without dead ends: 184 [2023-12-15 21:34:23,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:34:23,657 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 112 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:34:23,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 512 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:34:23,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-15 21:34:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 142. [2023-12-15 21:34:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 123 states have (on average 1.2439024390243902) internal successors, (153), 123 states have internal predecessors, (153), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-15 21:34:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 183 transitions. [2023-12-15 21:34:23,667 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 183 transitions. Word has length 113 [2023-12-15 21:34:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:34:23,667 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 183 transitions. [2023-12-15 21:34:23,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:34:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 183 transitions. [2023-12-15 21:34:23,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-15 21:34:23,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:34:23,669 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:23,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-15 21:34:23,874 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 21:34:23,874 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:34:23,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:34:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1100486565, now seen corresponding path program 1 times [2023-12-15 21:34:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:34:23,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726794717] [2023-12-15 21:34:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:34:23,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:34:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036795124] [2023-12-15 21:34:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:34:23,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:34:23,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:34:23,892 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 21:34:23,908 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 21:34:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:34:35,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 104 conjunts are in the unsatisfiable core [2023-12-15 21:34:35,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:34:35,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 5 [2023-12-15 21:34:36,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:34:37,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-15 21:34:38,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-15 21:34:39,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 46 [2023-12-15 21:34:39,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:34:39,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 46 [2023-12-15 21:34:49,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2023-12-15 21:34:49,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2023-12-15 21:34:49,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 39 [2023-12-15 21:34:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 73 proven. 327 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 21:34:52,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:34:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-15 21:34:56,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:34:56,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726794717] [2023-12-15 21:34:56,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:34:56,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036795124] [2023-12-15 21:34:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036795124] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:34:56,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:34:56,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [32] total 38 [2023-12-15 21:34:56,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067884968] [2023-12-15 21:34:56,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:34:56,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:34:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:34:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:34:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 21:34:56,760 INFO L87 Difference]: Start difference. First operand 142 states and 183 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:35:00,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:35:00,413 INFO L93 Difference]: Finished difference Result 392 states and 506 transitions. [2023-12-15 21:35:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:35:00,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2023-12-15 21:35:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:35:00,415 INFO L225 Difference]: With dead ends: 392 [2023-12-15 21:35:00,415 INFO L226 Difference]: Without dead ends: 251 [2023-12-15 21:35:00,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=182, Invalid=1540, Unknown=0, NotChecked=0, Total=1722 [2023-12-15 21:35:00,416 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 245 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:35:00,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 401 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 21:35:00,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-15 21:35:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 173. [2023-12-15 21:35:00,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 151 states have (on average 1.2516556291390728) internal successors, (189), 152 states have internal predecessors, (189), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-15 21:35:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 223 transitions. [2023-12-15 21:35:00,429 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 223 transitions. Word has length 114 [2023-12-15 21:35:00,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:35:00,430 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 223 transitions. [2023-12-15 21:35:00,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-12-15 21:35:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 223 transitions. [2023-12-15 21:35:00,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 21:35:00,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:35:00,430 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:00,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 21:35:00,639 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 21:35:00,640 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:35:00,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:35:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash 560091996, now seen corresponding path program 1 times [2023-12-15 21:35:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:35:00,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49233585] [2023-12-15 21:35:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:35:00,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:35:00,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:35:00,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989746688] [2023-12-15 21:35:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:35:00,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:35:00,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:35:00,669 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 21:35:00,672 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 21:35:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:35:07,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 136 conjunts are in the unsatisfiable core [2023-12-15 21:35:07,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:35:08,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:35:10,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:35:10,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-15 21:35:12,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2023-12-15 21:35:12,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:35:14,151 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-12-15 21:35:14,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 37 [2023-12-15 21:35:14,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 96 [2023-12-15 21:35:14,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:35:14,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:35:14,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:35:14,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 96 Received shutdown request... [2023-12-15 21:35:17,922 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:35:17,922 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:35:18,800 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:35:18,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-15 21:35:18,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-15 21:35:19,001 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 21:35:19,001 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 116 with TraceHistMax 15,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-14-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-13-1 context. [2023-12-15 21:35:19,005 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:35:19,007 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:35:19,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:35:19 BoogieIcfgContainer [2023-12-15 21:35:19,008 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:35:19,008 INFO L158 Benchmark]: Toolchain (without parser) took 75097.65ms. Allocated memory was 188.7MB in the beginning and 356.5MB in the end (delta: 167.8MB). Free memory was 141.1MB in the beginning and 186.2MB in the end (delta: -45.1MB). Peak memory consumption was 124.0MB. Max. memory is 8.0GB. [2023-12-15 21:35:19,008 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 188.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:35:19,009 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.85ms. Allocated memory is still 188.7MB. Free memory was 140.8MB in the beginning and 125.4MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 21:35:19,009 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.82ms. Allocated memory is still 188.7MB. Free memory was 125.4MB in the beginning and 121.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 21:35:19,009 INFO L158 Benchmark]: Boogie Preprocessor took 57.86ms. Allocated memory is still 188.7MB. Free memory was 121.2MB in the beginning and 116.3MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 21:35:19,009 INFO L158 Benchmark]: RCFGBuilder took 628.99ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 116.3MB in the beginning and 183.2MB in the end (delta: -66.9MB). Peak memory consumption was 26.8MB. Max. memory is 8.0GB. [2023-12-15 21:35:19,009 INFO L158 Benchmark]: TraceAbstraction took 74113.15ms. Allocated memory was 226.5MB in the beginning and 356.5MB in the end (delta: 130.0MB). Free memory was 182.7MB in the beginning and 186.2MB in the end (delta: -3.5MB). Peak memory consumption was 126.6MB. Max. memory is 8.0GB. [2023-12-15 21:35:19,010 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 188.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.85ms. Allocated memory is still 188.7MB. Free memory was 140.8MB in the beginning and 125.4MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.82ms. Allocated memory is still 188.7MB. Free memory was 125.4MB in the beginning and 121.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.86ms. Allocated memory is still 188.7MB. Free memory was 121.2MB in the beginning and 116.3MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 628.99ms. Allocated memory was 188.7MB in the beginning and 226.5MB in the end (delta: 37.7MB). Free memory was 116.3MB in the beginning and 183.2MB in the end (delta: -66.9MB). Peak memory consumption was 26.8MB. Max. memory is 8.0GB. * TraceAbstraction took 74113.15ms. Allocated memory was 226.5MB in the beginning and 356.5MB in the end (delta: 130.0MB). Free memory was 182.7MB in the beginning and 186.2MB in the end (delta: -3.5MB). Peak memory consumption was 126.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 116 with TraceHistMax 15,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-14-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-13-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.1s, OverallIterations: 15, TraceHistogramMax: 15, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 2297 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2297 mSDsluCounter, 5654 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4024 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3275 IncrementalHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 1630 mSDtfsCounter, 3275 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2265 GetRequests, 2058 SyntacticMatches, 33 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=9, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 539 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 12.1s SatisfiabilityAnalysisTime, 31.1s InterpolantComputationTime, 1675 NumberOfCodeBlocks, 1675 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2217 ConstructedInterpolants, 9 QuantifiedInterpolants, 27180 SizeOfPredicates, 214 NumberOfNonLiveVariables, 5651 ConjunctsInSsa, 403 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 7863/8400 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