/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:37:15,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:37:15,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:37:15,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:37:15,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:37:15,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:37:15,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:37:15,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:37:15,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:37:15,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:37:15,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:37:15,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:37:15,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:37:15,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:37:15,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:37:15,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:37:15,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:37:15,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:37:15,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:37:15,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:37:15,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:37:15,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:37:15,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:37:15,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:37:15,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:37:15,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:37:15,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:37:15,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:37:15,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:37:15,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:37:15,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:37:15,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:37:15,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:37:15,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:37:15,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:37:15,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:37:15,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:37:15,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:37:15,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:37:15,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:37:15,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:37:15,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:37:15,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:37:15,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:37:15,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:37:15,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:37:15,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:37:15,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:37:15,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:37:15,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:37:15,959 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:37:15,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:37:15,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:37:15,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:37:15,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:37:15,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:37:15,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:37:15,961 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:37:15,961 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:37:15,961 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:37:15,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:37:15,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:37:15,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:37:15,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:37:15,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:37:15,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:37:15,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:37:15,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:37:15,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:37:15,963 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:37:15,963 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:37:15,963 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:37:15,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:37:15,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:37:15,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:37:15,964 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:37:16,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:37:16,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:37:16,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:37:16,233 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:37:16,235 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:37:16,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec-2.c [2022-01-10 06:37:16,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d600555ae/7c943187a7f5422091c0a6e9ed1bb6f6/FLAG6be8fb757 [2022-01-10 06:37:16,674 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:37:16,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-2.c [2022-01-10 06:37:16,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d600555ae/7c943187a7f5422091c0a6e9ed1bb6f6/FLAG6be8fb757 [2022-01-10 06:37:16,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d600555ae/7c943187a7f5422091c0a6e9ed1bb6f6 [2022-01-10 06:37:16,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:37:16,698 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:37:16,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:37:16,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:37:16,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:37:16,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399e5223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16, skipping insertion in model container [2022-01-10 06:37:16,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:37:16,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:37:16,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-2.c[318,331] [2022-01-10 06:37:16,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:37:16,864 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:37:16,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-2.c[318,331] [2022-01-10 06:37:16,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:37:16,895 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:37:16,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16 WrapperNode [2022-01-10 06:37:16,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:37:16,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:37:16,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:37:16,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:37:16,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,940 INFO L137 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2022-01-10 06:37:16,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:37:16,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:37:16,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:37:16,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:37:16,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:37:16,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:37:16,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:37:16,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:37:16,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (1/1) ... [2022-01-10 06:37:16,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:37:16,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:37:16,985 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) [2022-01-10 06:37:16,992 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 [2022-01-10 06:37:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:37:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-10 06:37:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-01-10 06:37:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:37:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:37:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:37:17,062 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:37:17,063 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:37:17,128 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:37:17,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:37:17,133 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 06:37:17,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:37:17 BoogieIcfgContainer [2022-01-10 06:37:17,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:37:17,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:37:17,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:37:17,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:37:17,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:37:16" (1/3) ... [2022-01-10 06:37:17,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b80f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:37:17, skipping insertion in model container [2022-01-10 06:37:17,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:37:16" (2/3) ... [2022-01-10 06:37:17,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b80f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:37:17, skipping insertion in model container [2022-01-10 06:37:17,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:37:17" (3/3) ... [2022-01-10 06:37:17,142 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec-2.c [2022-01-10 06:37:17,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:37:17,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:37:17,186 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:37:17,193 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:37:17,193 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:37:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 06:37:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 06:37:17,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:37:17,211 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:37:17,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONERROR_FUNCTION === [fErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:37:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:37:17,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2027498805, now seen corresponding path program 1 times [2022-01-10 06:37:17,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:37:17,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260792244] [2022-01-10 06:37:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:37:17,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:37:17,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:37:17,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:37:17,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:37:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:37:17,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:37:17,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:37:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:37:17,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:37:17,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:37:17,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260792244] [2022-01-10 06:37:17,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260792244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:37:17,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:37:17,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:37:17,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975182535] [2022-01-10 06:37:17,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:37:17,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:37:17,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:37:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:37:17,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:37:17,529 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:37:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:37:17,571 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-01-10 06:37:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:37:17,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-10 06:37:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:37:17,581 INFO L225 Difference]: With dead ends: 20 [2022-01-10 06:37:17,581 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 06:37:17,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:37:17,592 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:37:17,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 15 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:37:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 06:37:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 06:37:17,614 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) [2022-01-10 06:37:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 06:37:17,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-01-10 06:37:17,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:37:17,616 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 06:37:17,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:37:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 06:37:17,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 06:37:17,618 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 06:37:17,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 06:37:17,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:37:17,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 06:37:17,832 INFO L858 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2022-01-10 06:37:17,833 INFO L854 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (not (= (_ bv2 32) |f_#in~n|)) [2022-01-10 06:37:17,833 INFO L858 garLoopResultBuilder]: For program point fEXIT(lines 5 10) no Hoare annotation was computed. [2022-01-10 06:37:17,833 INFO L858 garLoopResultBuilder]: For program point L8-1(lines 5 10) no Hoare annotation was computed. [2022-01-10 06:37:17,833 INFO L858 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2022-01-10 06:37:17,834 INFO L861 garLoopResultBuilder]: At program point fENTRY(lines 5 10) the Hoare annotation is: true [2022-01-10 06:37:17,834 INFO L858 garLoopResultBuilder]: For program point fFINAL(lines 5 10) no Hoare annotation was computed. [2022-01-10 06:37:17,834 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 06:37:17,834 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 06:37:17,834 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 06:37:17,834 INFO L861 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: true [2022-01-10 06:37:17,835 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 06:37:17,835 INFO L858 garLoopResultBuilder]: For program point L13-1(lines 12 14) no Hoare annotation was computed. [2022-01-10 06:37:17,839 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-10 06:37:17,841 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 06:37:17,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:37:17 BoogieIcfgContainer [2022-01-10 06:37:17,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 06:37:17,849 INFO L158 Benchmark]: Toolchain (without parser) took 1150.27ms. Allocated memory was 179.3MB in the beginning and 251.7MB in the end (delta: 72.4MB). Free memory was 121.6MB in the beginning and 189.0MB in the end (delta: -67.4MB). Peak memory consumption was 5.4MB. Max. memory is 8.0GB. [2022-01-10 06:37:17,849 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 179.3MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 06:37:17,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.26ms. Allocated memory was 179.3MB in the beginning and 251.7MB in the end (delta: 72.4MB). Free memory was 121.4MB in the beginning and 224.6MB in the end (delta: -103.3MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. [2022-01-10 06:37:17,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.65ms. Allocated memory is still 251.7MB. Free memory was 224.6MB in the beginning and 223.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 06:37:17,850 INFO L158 Benchmark]: Boogie Preprocessor took 12.91ms. Allocated memory is still 251.7MB. Free memory was 222.6MB in the beginning and 222.0MB in the end (delta: 522.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 06:37:17,851 INFO L158 Benchmark]: RCFGBuilder took 180.47ms. Allocated memory is still 251.7MB. Free memory was 222.0MB in the beginning and 212.6MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 06:37:17,851 INFO L158 Benchmark]: TraceAbstraction took 711.80ms. Allocated memory is still 251.7MB. Free memory was 212.6MB in the beginning and 189.0MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-01-10 06:37:17,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 179.3MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.26ms. Allocated memory was 179.3MB in the beginning and 251.7MB in the end (delta: 72.4MB). Free memory was 121.4MB in the beginning and 224.6MB in the end (delta: -103.3MB). Peak memory consumption was 9.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.65ms. Allocated memory is still 251.7MB. Free memory was 224.6MB in the beginning and 223.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.91ms. Allocated memory is still 251.7MB. Free memory was 222.6MB in the beginning and 222.0MB in the end (delta: 522.2kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 180.47ms. Allocated memory is still 251.7MB. Free memory was 222.0MB in the beginning and 212.6MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 711.80ms. Allocated memory is still 251.7MB. Free memory was 212.6MB in the beginning and 189.0MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. 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: 9]: 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 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 6 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 6 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 SizeOfPredicates, 1 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 7/7 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 RESULT: Ultimate proved your program to be correct! [2022-01-10 06:37:17,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...