/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 14:45:17,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 14:45:17,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 14:45:17,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 14:45:17,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 14:45:17,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 14:45:17,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 14:45:17,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 14:45:17,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 14:45:17,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 14:45:17,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 14:45:17,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 14:45:17,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 14:45:17,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 14:45:17,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 14:45:17,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 14:45:17,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 14:45:17,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 14:45:17,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 14:45:17,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 14:45:17,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 14:45:17,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 14:45:17,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 14:45:17,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 14:45:17,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 14:45:17,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-10 14:45:17,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-10 14:45:17,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-10 14:45:17,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-10 14:45:17,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-10 14:45:17,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-10 14:45:17,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-10 14:45:17,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-10 14:45:17,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 14:45:17,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 14:45:17,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 14:45:17,691 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 [2020-07-10 14:45:17,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 14:45:17,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 14:45:17,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 14:45:17,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 14:45:17,708 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 14:45:17,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 14:45:17,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 14:45:17,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 14:45:17,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 14:45:17,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 14:45:17,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 14:45:17,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 14:45:17,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 14:45:17,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 14:45:17,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 14:45:17,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 14:45:17,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 14:45:17,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 14:45:17,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 14:45:17,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 14:45:17,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 14:45:17,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 14:45:17,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 14:45:17,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 14:45:17,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 14:45:17,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 14:45:17,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 14:45:17,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 14:45:17,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 14:45:17,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 14:45:17,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 14:45:17,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 14:45:17,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 14:45:18,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 14:45:18,001 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 14:45:18,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c [2020-07-10 14:45:18,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350b89b51/1e89910513434b439ef2f6d7b4791396/FLAG036e5793b [2020-07-10 14:45:18,544 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 14:45:18,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-1.c [2020-07-10 14:45:18,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350b89b51/1e89910513434b439ef2f6d7b4791396/FLAG036e5793b [2020-07-10 14:45:18,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350b89b51/1e89910513434b439ef2f6d7b4791396 [2020-07-10 14:45:18,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 14:45:18,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 14:45:18,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 14:45:18,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 14:45:18,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 14:45:18,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 02:45:18" (1/1) ... [2020-07-10 14:45:18,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2498d6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:18, skipping insertion in model container [2020-07-10 14:45:18,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 02:45:18" (1/1) ... [2020-07-10 14:45:18,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 14:45:18,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 14:45:19,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 14:45:19,102 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 14:45:19,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 14:45:19,132 INFO L208 MainTranslator]: Completed translation [2020-07-10 14:45:19,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19 WrapperNode [2020-07-10 14:45:19,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 14:45:19,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 14:45:19,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 14:45:19,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 14:45:19,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19" (1/1) ... [2020-07-10 14:45:19,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19" (1/1) ... [2020-07-10 14:45:19,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19" (1/1) ... [2020-07-10 14:45:19,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19" (1/1) ... [2020-07-10 14:45:19,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19" (1/1) ... [2020-07-10 14:45:19,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19" (1/1) ... [2020-07-10 14:45:19,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19" (1/1) ... [2020-07-10 14:45:19,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 14:45:19,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 14:45:19,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 14:45:19,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 14:45:19,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19" (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 [2020-07-10 14:45:19,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 14:45:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 14:45:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-10 14:45:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 14:45:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 14:45:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-10 14:45:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 14:45:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 14:45:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 14:45:19,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 14:45:19,505 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 14:45:19,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:45:19 BoogieIcfgContainer [2020-07-10 14:45:19,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 14:45:19,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 14:45:19,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 14:45:19,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 14:45:19,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 02:45:18" (1/3) ... [2020-07-10 14:45:19,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ca022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:45:19, skipping insertion in model container [2020-07-10 14:45:19,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:45:19" (2/3) ... [2020-07-10 14:45:19,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ca022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:45:19, skipping insertion in model container [2020-07-10 14:45:19,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:45:19" (3/3) ... [2020-07-10 14:45:19,538 INFO L109 eAbstractionObserver]: Analyzing ICFG afterrec-1.c [2020-07-10 14:45:19,565 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 14:45:19,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 14:45:19,613 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 14:45:19,635 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 14:45:19,635 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 14:45:19,635 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 14:45:19,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 14:45:19,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 14:45:19,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 14:45:19,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 14:45:19,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 14:45:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-07-10 14:45:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-10 14:45:19,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 14:45:19,659 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 14:45:19,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 14:45:19,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 14:45:19,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1715138264, now seen corresponding path program 1 times [2020-07-10 14:45:19,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 14:45:19,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836516598] [2020-07-10 14:45:19,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 14:45:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 14:45:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 14:45:19,791 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-10 14:45:19,791 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 14:45:19,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 14:45:19,813 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 14:45:19,814 WARN L170 areAnnotationChecker]: fENTRY has no Hoare annotation [2020-07-10 14:45:19,814 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 14:45:19,814 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 14:45:19,814 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 14:45:19,814 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 14:45:19,814 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 14:45:19,815 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 14:45:19,815 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 14:45:19,815 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 14:45:19,815 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 14:45:19,815 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 14:45:19,815 WARN L170 areAnnotationChecker]: fFINAL has no Hoare annotation [2020-07-10 14:45:19,816 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-10 14:45:19,816 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2020-07-10 14:45:19,816 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 14:45:19,816 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 14:45:19,816 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-10 14:45:19,817 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-10 14:45:19,817 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-10 14:45:19,817 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-10 14:45:19,817 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-10 14:45:19,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 02:45:19 BoogieIcfgContainer [2020-07-10 14:45:19,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 14:45:19,826 INFO L168 Benchmark]: Toolchain (without parser) took 924.18 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 152.5 MB in the end (delta: -50.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-07-10 14:45:19,827 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-10 14:45:19,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.95 ms. Allocated memory is still 137.4 MB. Free memory was 102.1 MB in the beginning and 93.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-07-10 14:45:19,829 INFO L168 Benchmark]: Boogie Preprocessor took 27.97 ms. Allocated memory is still 137.4 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-10 14:45:19,830 INFO L168 Benchmark]: RCFGBuilder took 348.76 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 167.2 MB in the end (delta: -75.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-10 14:45:19,831 INFO L168 Benchmark]: TraceAbstraction took 308.63 ms. Allocated memory is still 200.3 MB. Free memory was 166.5 MB in the beginning and 152.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-10 14:45:19,835 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.95 ms. Allocated memory is still 137.4 MB. Free memory was 102.1 MB in the beginning and 93.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.97 ms. Allocated memory is still 137.4 MB. Free memory was 93.2 MB in the beginning and 91.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.76 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 167.2 MB in the end (delta: -75.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 308.63 ms. Allocated memory is still 200.3 MB. Free memory was 166.5 MB in the beginning and 152.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] CALL f(4) VAL [\old(n)=4] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=4, n=3] [L6] CALL f(n) VAL [\old(n)=3] [L4] COND FALSE !(n<3) [L5] n-- VAL [\old(n)=3, n=2] [L6] CALL f(n) VAL [\old(n)=2] [L4] COND TRUE n<3 VAL [\old(n)=2, n=2] [L6] RET f(n) VAL [\old(n)=3, n=2] [L7] __VERIFIER_error() VAL [\old(n)=3, n=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=16occurred 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, 16 NumberOfCodeBlocks, 16 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...