/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/loop-lit/bhmr2007.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:28:52,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:28:52,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:28:52,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 01:28:52,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:28:52,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:28:52,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:28:52,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:28:52,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:28:52,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:28:52,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:28:52,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:28:52,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:28:52,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:28:52,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:28:52,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:28:52,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:28:52,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:28:52,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:28:52,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:28:52,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:28:52,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:28:52,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:28:52,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:28:52,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:28:52,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:28:52,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:28:52,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:28:52,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 01:28:52,974 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:28:52,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:28:52,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:28:52,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:28:52,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:28:52,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:28:52,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:28:52,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:28:52,976 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:28:52,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:28:52,976 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:28:52,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:28:52,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:28:52,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:28:52,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:28:52,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:28:52,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:28:52,977 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:28:52,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:28:52,977 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:28:52,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:28:52,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:28:52,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:28:52,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:28:52,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:28:52,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:28:52,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:28:52,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:28:52,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:28:52,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:28:52,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:28:52,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:28:52,979 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:28:52,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:28:52,979 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:28:52,979 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:28:53,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:28:53,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:28:53,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:28:53,160 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:28:53,160 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:28:53,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/bhmr2007.i [2023-04-02 01:28:54,135 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:28:54,330 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:28:54,330 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i [2023-04-02 01:28:54,334 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61cbe9676/7d1c4fe4ae8b4592a896a99a1a59b99e/FLAG270268c7a [2023-04-02 01:28:54,343 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61cbe9676/7d1c4fe4ae8b4592a896a99a1a59b99e [2023-04-02 01:28:54,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:28:54,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:28:54,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:28:54,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:28:54,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:28:54,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a87ef65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54, skipping insertion in model container [2023-04-02 01:28:54,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:28:54,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:28:54,443 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i[895,908] [2023-04-02 01:28:54,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:28:54,455 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:28:54,463 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/bhmr2007.i[895,908] [2023-04-02 01:28:54,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:28:54,473 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:28:54,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54 WrapperNode [2023-04-02 01:28:54,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:28:54,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:28:54,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:28:54,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:28:54,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,489 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:28:54,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:28:54,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:28:54,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:28:54,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (1/1) ... [2023-04-02 01:28:54,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:28:54,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:54,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 01:28:54,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 01:28:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:28:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:28:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:28:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:28:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 01:28:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:28:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:28:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:28:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:28:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:28:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:28:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:28:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:28:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:28:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 01:28:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:28:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:28:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:28:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:28:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:28:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:28:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:28:54,616 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:28:54,618 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:28:54,763 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:28:54,767 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:28:54,767 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 01:28:54,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:28:54 BoogieIcfgContainer [2023-04-02 01:28:54,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:28:54,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:28:54,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:28:54,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:28:54,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:28:54" (1/3) ... [2023-04-02 01:28:54,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf65b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:28:54, skipping insertion in model container [2023-04-02 01:28:54,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:28:54" (2/3) ... [2023-04-02 01:28:54,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf65b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:28:54, skipping insertion in model container [2023-04-02 01:28:54,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:28:54" (3/3) ... [2023-04-02 01:28:54,774 INFO L112 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2023-04-02 01:28:54,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:28:54,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:28:54,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:28:54,820 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=LoopsAndPotentialCycles, 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;@34969d66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:28:54,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:28:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:28:54,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-02 01:28:54,831 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:54,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:54,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:54,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:54,835 INFO L85 PathProgramCache]: Analyzing trace with hash -353995685, now seen corresponding path program 1 times [2023-04-02 01:28:54,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:54,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876299019] [2023-04-02 01:28:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:54,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:28:54,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:54,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876299019] [2023-04-02 01:28:54,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876299019] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:28:54,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:28:54,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 01:28:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918256747] [2023-04-02 01:28:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:28:54,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 01:28:54,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 01:28:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 01:28:54,981 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:55,053 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-04-02 01:28:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 01:28:55,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-04-02 01:28:55,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:55,064 INFO L225 Difference]: With dead ends: 34 [2023-04-02 01:28:55,064 INFO L226 Difference]: Without dead ends: 15 [2023-04-02 01:28:55,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 01:28:55,069 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:55,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:28:55,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-04-02 01:28:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-04-02 01:28:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-04-02 01:28:55,097 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2023-04-02 01:28:55,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:55,098 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-04-02 01:28:55,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-04-02 01:28:55,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-02 01:28:55,099 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:55,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:55,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:28:55,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:55,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash -364154416, now seen corresponding path program 1 times [2023-04-02 01:28:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:55,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621665265] [2023-04-02 01:28:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:55,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:28:55,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:55,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621665265] [2023-04-02 01:28:55,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621665265] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:28:55,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:28:55,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 01:28:55,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455292027] [2023-04-02 01:28:55,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:28:55,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 01:28:55,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:55,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 01:28:55,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 01:28:55,320 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:55,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:55,402 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-04-02 01:28:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:28:55,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-04-02 01:28:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:55,404 INFO L225 Difference]: With dead ends: 22 [2023-04-02 01:28:55,404 INFO L226 Difference]: Without dead ends: 17 [2023-04-02 01:28:55,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-02 01:28:55,405 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:55,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:28:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-04-02 01:28:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-04-02 01:28:55,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-04-02 01:28:55,409 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2023-04-02 01:28:55,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:55,410 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-04-02 01:28:55,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-04-02 01:28:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-02 01:28:55,410 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:55,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:55,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:28:55,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:55,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1324408332, now seen corresponding path program 1 times [2023-04-02 01:28:55,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:55,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852242893] [2023-04-02 01:28:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:55,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:55,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:28:55,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:55,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852242893] [2023-04-02 01:28:55,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852242893] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:55,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764398218] [2023-04-02 01:28:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:55,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:55,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:55,679 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) [2023-04-02 01:28:55,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 01:28:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:55,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 01:28:55,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:28:55,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:56,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:28:56,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764398218] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:56,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:56,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2023-04-02 01:28:56,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991264926] [2023-04-02 01:28:56,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:56,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 01:28:56,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:56,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 01:28:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:28:56,152 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:56,639 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-04-02 01:28:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 01:28:56,639 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-04-02 01:28:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:56,640 INFO L225 Difference]: With dead ends: 31 [2023-04-02 01:28:56,640 INFO L226 Difference]: Without dead ends: 25 [2023-04-02 01:28:56,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 01:28:56,644 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:56,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 37 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:28:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-04-02 01:28:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2023-04-02 01:28:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-04-02 01:28:56,651 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2023-04-02 01:28:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:56,651 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-04-02 01:28:56,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-04-02 01:28:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 01:28:56,652 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:28:56,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:28:56,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:56,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:56,861 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:28:56,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:28:56,862 INFO L85 PathProgramCache]: Analyzing trace with hash 921365778, now seen corresponding path program 1 times [2023-04-02 01:28:56,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:28:56,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833596243] [2023-04-02 01:28:56,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:56,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:28:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:28:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:28:57,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:28:57,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833596243] [2023-04-02 01:28:57,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833596243] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:28:57,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650917864] [2023-04-02 01:28:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:28:57,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:28:57,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:28:57,121 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) [2023-04-02 01:28:57,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 01:28:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:28:57,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-02 01:28:57,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:28:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:28:57,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:28:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:28:57,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650917864] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:28:57,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:28:57,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2023-04-02 01:28:57,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065622028] [2023-04-02 01:28:57,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:28:57,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-02 01:28:57,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:28:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-02 01:28:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2023-04-02 01:28:57,498 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:28:57,877 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2023-04-02 01:28:57,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 01:28:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-02 01:28:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:28:57,878 INFO L225 Difference]: With dead ends: 29 [2023-04-02 01:28:57,878 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 01:28:57,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=1396, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 01:28:57,882 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:28:57,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 67 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:28:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 01:28:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 01:28:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 01:28:57,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 01:28:57,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2023-04-02 01:28:57,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:28:57,886 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 01:28:57,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 21 states have internal predecessors, (32), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:28:57,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 01:28:57,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 01:28:57,888 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 01:28:57,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 01:28:58,093 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,SelfDestructingSolverStorable3 [2023-04-02 01:28:58,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 14 16) no Hoare annotation was computed. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 35) no Hoare annotation was computed. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-04-02 01:28:58,137 INFO L899 garLoopResultBuilder]: For program point L29-2(lines 29 35) no Hoare annotation was computed. [2023-04-02 01:28:58,138 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse1 (+ main_~b~0 main_~a~0)) (.cse0 (* main_~i~0 3))) (and (<= .cse0 .cse1) (< .cse1 (+ (* main_~n~0 3) 1)) (<= .cse1 .cse0))) [2023-04-02 01:28:58,138 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (let ((.cse1 (* main_~n~0 3)) (.cse0 (+ main_~b~0 main_~a~0))) (and (< .cse0 (+ .cse1 1)) (<= .cse1 .cse0))) [2023-04-02 01:28:58,138 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 24 40) no Hoare annotation was computed. [2023-04-02 01:28:58,138 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 24 40) no Hoare annotation was computed. [2023-04-02 01:28:58,138 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 40) the Hoare annotation is: true [2023-04-02 01:28:58,138 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-04-02 01:28:58,138 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:28:58,138 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 01:28:58,138 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:28:58,138 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:28:58,139 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 01:28:58,139 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:28:58,139 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 01:28:58,139 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2023-04-02 01:28:58,139 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2023-04-02 01:28:58,139 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 22) the Hoare annotation is: true [2023-04-02 01:28:58,139 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-04-02 01:28:58,139 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-04-02 01:28:58,139 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-04-02 01:28:58,141 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-04-02 01:28:58,142 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 01:28:58,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 01:28:58 BoogieIcfgContainer [2023-04-02 01:28:58,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 01:28:58,151 INFO L158 Benchmark]: Toolchain (without parser) took 3805.61ms. Allocated memory is still 311.4MB. Free memory was 271.2MB in the beginning and 178.8MB in the end (delta: 92.4MB). Peak memory consumption was 92.9MB. Max. memory is 8.0GB. [2023-04-02 01:28:58,151 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 200.3MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 01:28:58,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 127.76ms. Allocated memory is still 311.4MB. Free memory was 271.2MB in the beginning and 260.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 01:28:58,151 INFO L158 Benchmark]: Boogie Preprocessor took 16.81ms. Allocated memory is still 311.4MB. Free memory was 260.7MB in the beginning and 259.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 01:28:58,151 INFO L158 Benchmark]: RCFGBuilder took 277.14ms. Allocated memory is still 311.4MB. Free memory was 259.2MB in the beginning and 248.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 01:28:58,151 INFO L158 Benchmark]: TraceAbstraction took 3380.74ms. Allocated memory is still 311.4MB. Free memory was 247.6MB in the beginning and 178.8MB in the end (delta: 68.8MB). Peak memory consumption was 69.8MB. Max. memory is 8.0GB. [2023-04-02 01:28:58,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 200.3MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 127.76ms. Allocated memory is still 311.4MB. Free memory was 271.2MB in the beginning and 260.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.81ms. Allocated memory is still 311.4MB. Free memory was 260.7MB in the beginning and 259.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 277.14ms. Allocated memory is still 311.4MB. Free memory was 259.2MB in the beginning and 248.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3380.74ms. Allocated memory is still 311.4MB. Free memory was 247.6MB in the beginning and 178.8MB in the end (delta: 68.8MB). Peak memory consumption was 69.8MB. 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 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 141 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 403 IncrementalHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 22 mSDtfsCounter, 403 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 22 NumberOfFragments, 52 HoareAnnotationTreeSize, 12 FomulaSimplifications, 218 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 149 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 871 SizeOfPredicates, 6 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/18 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (i * 3 <= b + a && b + a < n * 3 + 1) && b + a <= i * 3 RESULT: Ultimate proved your program to be correct! [2023-04-02 01:28:58,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...