/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive-simple/afterrec-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:58:29,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:58:29,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:58:29,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:58:29,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:58:29,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:58:29,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:58:29,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:58:29,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:58:29,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:58:29,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:58:29,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:58:29,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:58:29,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:58:29,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:58:29,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:58:29,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:58:29,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:58:29,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:58:29,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:58:29,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:58:29,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:58:29,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:58:29,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:58:29,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:58:29,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:58:29,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:58:29,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:58:29,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:58:29,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:58:29,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:58:29,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:58:29,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:58:29,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:58:29,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:58:29,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:58:29,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:58:29,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:58:29,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:58:29,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:58:29,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:58:29,926 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:58:29,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:58:29,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:58:29,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:58:29,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:58:29,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:58:29,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:58:29,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:58:29,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:58:29,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:58:29,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:58:29,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:58:29,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:58:29,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:58:29,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:58:29,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:58:29,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:58:29,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:58:29,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:58:29,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:58:29,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:58:29,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:58:30,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:58:30,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:58:30,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:58:30,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:58:30,381 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:58:30,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec-1.c [2020-12-22 06:58:30,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d42d0faf3/566d6838437f4799b0fd92c52af7e771/FLAG21242b656 [2020-12-22 06:58:31,085 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:58:31,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec-1.c [2020-12-22 06:58:31,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d42d0faf3/566d6838437f4799b0fd92c52af7e771/FLAG21242b656 [2020-12-22 06:58:31,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d42d0faf3/566d6838437f4799b0fd92c52af7e771 [2020-12-22 06:58:31,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:58:31,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:58:31,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:58:31,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:58:31,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:58:31,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b467b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31, skipping insertion in model container [2020-12-22 06:58:31,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:58:31,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:58:31,644 WARN L226 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-simple/afterrec-1.c[318,331] [2020-12-22 06:58:31,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:58:31,662 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:58:31,676 WARN L226 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-simple/afterrec-1.c[318,331] [2020-12-22 06:58:31,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:58:31,693 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:58:31,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31 WrapperNode [2020-12-22 06:58:31,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:58:31,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:58:31,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:58:31,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:58:31,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:58:31,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:58:31,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:58:31,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:58:31,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... [2020-12-22 06:58:31,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:58:31,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:58:31,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:58:31,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:58:31,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:58:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-12-22 06:58:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-12-22 06:58:31,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:58:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:58:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:58:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:58:32,136 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:58:32,136 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 06:58:32,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:58:32 BoogieIcfgContainer [2020-12-22 06:58:32,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:58:32,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:58:32,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:58:32,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:58:32,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:58:31" (1/3) ... [2020-12-22 06:58:32,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599f76d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:58:32, skipping insertion in model container [2020-12-22 06:58:32,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:58:31" (2/3) ... [2020-12-22 06:58:32,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599f76d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:58:32, skipping insertion in model container [2020-12-22 06:58:32,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:58:32" (3/3) ... [2020-12-22 06:58:32,147 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec-1.c [2020-12-22 06:58:32,154 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:58:32,159 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 06:58:32,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 06:58:32,237 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:58:32,239 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:58:32,239 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:58:32,239 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:58:32,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:58:32,239 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:58:32,240 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:58:32,240 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:58:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-22 06:58:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 06:58:32,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:58:32,293 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:58:32,294 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:58:32,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:58:32,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2027498805, now seen corresponding path program 1 times [2020-12-22 06:58:32,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:58:32,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86630317] [2020-12-22 06:58:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:58:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:58:32,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:58:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:58:32,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:58:32,507 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:58:32,508 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:58:32,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:58:32,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:58:32 BoogieIcfgContainer [2020-12-22 06:58:32,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:58:32,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:58:32,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:58:32,540 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:58:32,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:58:32" (3/4) ... [2020-12-22 06:58:32,543 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:58:32,614 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/recursive-simple/afterrec-1.c-witness.graphml [2020-12-22 06:58:32,615 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:58:32,617 INFO L168 Benchmark]: Toolchain (without parser) took 1156.48 ms. Allocated memory is still 164.6 MB. Free memory was 139.9 MB in the beginning and 102.8 MB in the end (delta: 37.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2020-12-22 06:58:32,618 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory is still 138.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:58:32,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.18 ms. Allocated memory is still 164.6 MB. Free memory was 139.7 MB in the beginning and 130.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 06:58:32,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.20 ms. Allocated memory is still 164.6 MB. Free memory was 130.8 MB in the beginning and 129.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:58:32,626 INFO L168 Benchmark]: Boogie Preprocessor took 19.81 ms. Allocated memory is still 164.6 MB. Free memory was 129.5 MB in the beginning and 128.7 MB in the end (delta: 825.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:58:32,627 INFO L168 Benchmark]: RCFGBuilder took 387.94 ms. Allocated memory is still 164.6 MB. Free memory was 128.5 MB in the beginning and 117.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:58:32,628 INFO L168 Benchmark]: TraceAbstraction took 399.08 ms. Allocated memory is still 164.6 MB. Free memory was 117.3 MB in the beginning and 104.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 06:58:32,629 INFO L168 Benchmark]: Witness Printer took 75.20 ms. Allocated memory is still 164.6 MB. Free memory was 104.9 MB in the beginning and 103.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:58:32,640 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 164.6 MB. Free memory is still 138.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 230.18 ms. Allocated memory is still 164.6 MB. Free memory was 139.7 MB in the beginning and 130.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.20 ms. Allocated memory is still 164.6 MB. Free memory was 130.8 MB in the beginning and 129.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.81 ms. Allocated memory is still 164.6 MB. Free memory was 129.5 MB in the beginning and 128.7 MB in the end (delta: 825.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 387.94 ms. Allocated memory is still 164.6 MB. Free memory was 128.5 MB in the beginning and 117.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 399.08 ms. Allocated memory is still 164.6 MB. Free memory was 117.3 MB in the beginning and 104.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Witness Printer took 75.20 ms. Allocated memory is still 164.6 MB. Free memory was 104.9 MB in the beginning and 103.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] CALL f(4) VAL [\old(n)=4] [L6] COND FALSE !(n<3) [L7] n-- VAL [\old(n)=4, n=3] [L8] CALL f(n) VAL [\old(n)=3] [L6] COND FALSE !(n<3) [L7] n-- VAL [\old(n)=3, n=2] [L8] CALL f(n) VAL [\old(n)=2] [L6] COND TRUE n<3 VAL [\old(n)=2, n=2] [L8] RET f(n) VAL [\old(n)=3, n=2] [L9] reach_error() VAL [\old(n)=3, n=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 3, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! Received shutdown request...