/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/recursive/Addition02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:19:08,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:19:08,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:19:08,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:19:08,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:19:08,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:19:08,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:19:08,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:19:08,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:19:08,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:19:08,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:19:08,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:19:08,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:19:08,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:19:08,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:19:08,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:19:08,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:19:08,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:19:08,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:19:08,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:19:08,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:19:08,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:19:08,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:19:08,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:19:08,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:19:08,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:19:08,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:19:08,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:19:08,977 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 [2023-03-31 01:19:09,007 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:19:09,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:19:09,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:19:09,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:19:09,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:19:09,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:19:09,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:19:09,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:19:09,010 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:19:09,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:19:09,011 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:19:09,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:19:09,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:19:09,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:19:09,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:19:09,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:19:09,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:19:09,012 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:19:09,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:19:09,012 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:19:09,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:19:09,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:19:09,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:19:09,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:19:09,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:19:09,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:19:09,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:19:09,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:19:09,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:19:09,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:19:09,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:19:09,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:19:09,014 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:19:09,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:19:09,014 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:19:09,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:19:09,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:19:09,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:19:09,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:19:09,266 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:19:09,267 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:19:09,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Addition02.c [2023-03-31 01:19:10,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:19:10,704 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:19:10,704 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition02.c [2023-03-31 01:19:10,711 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e8943bb7/bd72d9518c644e10b651955fab21307d/FLAG3aa659a8e [2023-03-31 01:19:10,723 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e8943bb7/bd72d9518c644e10b651955fab21307d [2023-03-31 01:19:10,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:19:10,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:19:10,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:19:10,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:19:10,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:19:10,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f48a2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10, skipping insertion in model container [2023-03-31 01:19:10,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:19:10,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:19:10,865 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/recursive/Addition02.c[1124,1137] [2023-03-31 01:19:10,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:19:10,876 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:19:10,888 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/recursive/Addition02.c[1124,1137] [2023-03-31 01:19:10,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:19:10,898 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:19:10,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10 WrapperNode [2023-03-31 01:19:10,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:19:10,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:19:10,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:19:10,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:19:10,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,932 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:19:10,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:19:10,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:19:10,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:19:10,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (1/1) ... [2023-03-31 01:19:10,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:19:10,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:19:10,971 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) [2023-03-31 01:19:11,015 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 [2023-03-31 01:19:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:19:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:19:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:19:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2023-03-31 01:19:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:19:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:19:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:19:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:19:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:19:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 01:19:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2023-03-31 01:19:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:19:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:19:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:19:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:19:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:19:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:19:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:19:11,093 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:19:11,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:19:11,250 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:19:11,255 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:19:11,255 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:19:11,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:19:11 BoogieIcfgContainer [2023-03-31 01:19:11,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:19:11,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:19:11,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:19:11,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:19:11,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:19:10" (1/3) ... [2023-03-31 01:19:11,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59bf0457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:19:11, skipping insertion in model container [2023-03-31 01:19:11,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:19:10" (2/3) ... [2023-03-31 01:19:11,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59bf0457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:19:11, skipping insertion in model container [2023-03-31 01:19:11,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:19:11" (3/3) ... [2023-03-31 01:19:11,274 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition02.c [2023-03-31 01:19:11,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:19:11,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:19:11,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:19:11,340 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;@48731826, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:19:11,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:19:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 01:19:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-03-31 01:19:11,350 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:19:11,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:19:11,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:19:11,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:19:11,356 INFO L85 PathProgramCache]: Analyzing trace with hash -125880268, now seen corresponding path program 1 times [2023-03-31 01:19:11,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:19:11,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642761917] [2023-03-31 01:19:11,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:19:11,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:19:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:19:11,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:19:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:19:11,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-31 01:19:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:19:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:19:11,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:19:11,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642761917] [2023-03-31 01:19:11,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642761917] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:19:11,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:19:11,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:19:11,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932996851] [2023-03-31 01:19:11,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:19:11,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:19:11,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:19:11,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:19:11,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:19:11,868 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:19:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:19:12,096 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-03-31 01:19:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:19:12,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-03-31 01:19:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:19:12,113 INFO L225 Difference]: With dead ends: 39 [2023-03-31 01:19:12,113 INFO L226 Difference]: Without dead ends: 25 [2023-03-31 01:19:12,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:19:12,121 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:19:12,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 41 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:19:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-03-31 01:19:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-03-31 01:19:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-03-31 01:19:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-03-31 01:19:12,164 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 16 [2023-03-31 01:19:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:19:12,165 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-03-31 01:19:12,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:19:12,165 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-03-31 01:19:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-03-31 01:19:12,166 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:19:12,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:19:12,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:19:12,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:19:12,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:19:12,168 INFO L85 PathProgramCache]: Analyzing trace with hash -943001011, now seen corresponding path program 1 times [2023-03-31 01:19:12,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:19:12,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440209364] [2023-03-31 01:19:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:19:12,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:19:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:19:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:19:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:19:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-31 01:19:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:19:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:19:12,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:19:12,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440209364] [2023-03-31 01:19:12,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440209364] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:19:12,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:19:12,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:19:12,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563100001] [2023-03-31 01:19:12,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:19:12,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:19:12,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:19:12,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:19:12,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:19:12,290 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:19:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:19:12,373 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2023-03-31 01:19:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:19:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-03-31 01:19:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:19:12,375 INFO L225 Difference]: With dead ends: 35 [2023-03-31 01:19:12,375 INFO L226 Difference]: Without dead ends: 27 [2023-03-31 01:19:12,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:19:12,383 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:19:12,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 12 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 01:19:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-03-31 01:19:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-03-31 01:19:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-03-31 01:19:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-03-31 01:19:12,406 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2023-03-31 01:19:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:19:12,406 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-03-31 01:19:12,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 01:19:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-03-31 01:19:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-03-31 01:19:12,407 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:19:12,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:19:12,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:19:12,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:19:12,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:19:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash 12462718, now seen corresponding path program 1 times [2023-03-31 01:19:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:19:12,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256919732] [2023-03-31 01:19:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:19:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:19:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 01:19:12,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 01:19:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 01:19:12,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-03-31 01:19:12,492 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 01:19:12,493 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 01:19:12,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:19:12,497 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-03-31 01:19:12,500 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 01:19:12,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 01:19:12 BoogieIcfgContainer [2023-03-31 01:19:12,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 01:19:12,527 INFO L158 Benchmark]: Toolchain (without parser) took 1800.28ms. Allocated memory was 187.7MB in the beginning and 239.1MB in the end (delta: 51.4MB). Free memory was 127.5MB in the beginning and 190.6MB in the end (delta: -63.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 01:19:12,527 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 187.7MB. Free memory was 137.2MB in the beginning and 137.0MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 01:19:12,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.41ms. Allocated memory is still 187.7MB. Free memory was 127.3MB in the beginning and 117.3MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 01:19:12,529 INFO L158 Benchmark]: Boogie Preprocessor took 41.76ms. Allocated memory is still 187.7MB. Free memory was 117.3MB in the beginning and 115.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 01:19:12,532 INFO L158 Benchmark]: RCFGBuilder took 322.01ms. Allocated memory is still 187.7MB. Free memory was 115.8MB in the beginning and 146.7MB in the end (delta: -30.9MB). Peak memory consumption was 7.8MB. Max. memory is 8.0GB. [2023-03-31 01:19:12,532 INFO L158 Benchmark]: TraceAbstraction took 1260.38ms. Allocated memory was 187.7MB in the beginning and 239.1MB in the end (delta: 51.4MB). Free memory was 146.2MB in the beginning and 190.6MB in the end (delta: -44.5MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. [2023-03-31 01:19:12,533 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 187.7MB. Free memory was 137.2MB in the beginning and 137.0MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.41ms. Allocated memory is still 187.7MB. Free memory was 127.3MB in the beginning and 117.3MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.76ms. Allocated memory is still 187.7MB. Free memory was 117.3MB in the beginning and 115.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 322.01ms. Allocated memory is still 187.7MB. Free memory was 115.8MB in the beginning and 146.7MB in the end (delta: -30.9MB). Peak memory consumption was 7.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1260.38ms. Allocated memory was 187.7MB in the beginning and 239.1MB in the end (delta: 51.4MB). Free memory was 146.2MB in the beginning and 190.6MB in the end (delta: -44.5MB). Peak memory consumption was 6.9MB. 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 - CounterExampleResult [Line: 45]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] int m = __VERIFIER_nondet_int(); [L30] COND FALSE !(m < 0 || m > 1073741823) [L35] int n = __VERIFIER_nondet_int(); [L36] COND FALSE !(n < 0 || n > 1073741823) VAL [m=0, n=1] [L41] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L16] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L19] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L20] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L16] COND TRUE n == 0 [L17] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L20] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L20] return addition(m+1, n-1); [L41] RET, EXPR addition(m,n) VAL [addition(m,n)=1, m=0, n=1] [L41] int result = addition(m,n); [L42] COND FALSE !(result == m - n) VAL [m=0, n=1, result=1] [L45] reach_error() VAL [m=0, n=1, result=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 200 IncrementalHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 13 mSDtfsCounter, 200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2023-03-31 01:19:12,548 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...