./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec_2calls_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec_2calls_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7757e3f263599cd02799bfad01adb3bcaa895e82 .................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 10:36:10,248 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 10:36:10,249 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 10:36:10,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 10:36:10,259 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 10:36:10,260 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 10:36:10,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 10:36:10,263 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 10:36:10,264 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 10:36:10,265 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 10:36:10,266 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 10:36:10,266 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 10:36:10,267 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 10:36:10,268 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 10:36:10,269 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 10:36:10,269 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 10:36:10,270 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 10:36:10,273 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 10:36:10,274 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 10:36:10,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 10:36:10,277 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 10:36:10,278 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 10:36:10,280 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 10:36:10,280 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 10:36:10,280 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 10:36:10,281 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 10:36:10,282 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 10:36:10,283 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 10:36:10,283 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 10:36:10,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 10:36:10,285 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 10:36:10,286 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 10:36:10,286 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 10:36:10,286 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 10:36:10,287 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 10:36:10,287 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 10:36:10,288 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-10 10:36:10,300 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 10:36:10,300 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 10:36:10,301 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 10:36:10,301 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 10:36:10,302 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 10:36:10,302 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 10:36:10,302 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 10:36:10,302 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 10:36:10,303 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 10:36:10,303 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 10:36:10,303 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 10:36:10,303 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 10:36:10,303 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 10:36:10,303 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 10:36:10,303 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 10:36:10,304 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 10:36:10,305 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 10:36:10,306 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 10:36:10,306 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 10:36:10,306 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 10:36:10,306 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 10:36:10,306 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 10:36:10,307 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 10:36:10,307 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 10:36:10,307 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 10:36:10,307 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 10:36:10,307 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 10:36:10,307 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 10:36:10,307 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7757e3f263599cd02799bfad01adb3bcaa895e82 [2018-11-10 10:36:10,335 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 10:36:10,345 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 10:36:10,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 10:36:10,350 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 10:36:10,350 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 10:36:10,351 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/../../sv-benchmarks/c/recursive-simple/afterrec_2calls_false-unreach-call_true-termination.c [2018-11-10 10:36:10,401 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/data/853c7ea9f/9d96967d3ad24210adea763ef0f071bc/FLAGbf5b64732 [2018-11-10 10:36:10,739 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 10:36:10,740 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/sv-benchmarks/c/recursive-simple/afterrec_2calls_false-unreach-call_true-termination.c [2018-11-10 10:36:10,744 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/data/853c7ea9f/9d96967d3ad24210adea763ef0f071bc/FLAGbf5b64732 [2018-11-10 10:36:10,758 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/data/853c7ea9f/9d96967d3ad24210adea763ef0f071bc [2018-11-10 10:36:10,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 10:36:10,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 10:36:10,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 10:36:10,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 10:36:10,767 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 10:36:10,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@471abd3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10, skipping insertion in model container [2018-11-10 10:36:10,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 10:36:10,791 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 10:36:10,897 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:36:10,900 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 10:36:10,909 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:36:10,919 INFO L193 MainTranslator]: Completed translation [2018-11-10 10:36:10,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10 WrapperNode [2018-11-10 10:36:10,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 10:36:10,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 10:36:10,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 10:36:10,920 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 10:36:10,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 10:36:10,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 10:36:10,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 10:36:10,951 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 10:36:10,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... [2018-11-10 10:36:10,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 10:36:10,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 10:36:10,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 10:36:10,962 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 10:36:10,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2018-11-10 10:36:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-10 10:36:11,063 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-10 10:36:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 10:36:11,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 10:36:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2018-11-10 10:36:11,063 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2018-11-10 10:36:11,197 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 10:36:11,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:36:11 BoogieIcfgContainer [2018-11-10 10:36:11,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 10:36:11,198 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 10:36:11,198 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 10:36:11,206 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 10:36:11,206 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:36:11" (1/1) ... [2018-11-10 10:36:11,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:36:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 10:36:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2018-11-10 10:36:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-10 10:36:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 10:36:11,266 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 10:36:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:36:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:36:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 10:36:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 19 states and 20 transitions. [2018-11-10 10:36:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-10 10:36:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 10:36:11,556 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 10:36:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 10:36:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 10:36:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 10:36:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 10:36:11,600 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2018-11-10 10:36:11,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 10:36:11 ImpRootNode [2018-11-10 10:36:11,619 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 10:36:11,620 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 10:36:11,620 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 10:36:11,620 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 10:36:11,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:36:11" (3/4) ... [2018-11-10 10:36:11,622 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 10:36:11,654 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2137e0f8-7376-4c92-8d3b-3be125398268/bin-2019/ukojak/witness.graphml [2018-11-10 10:36:11,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 10:36:11,655 INFO L168 Benchmark]: Toolchain (without parser) took 893.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -136.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2018-11-10 10:36:11,656 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:36:11,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.32 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:36:11,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.02 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:36:11,657 INFO L168 Benchmark]: Boogie Preprocessor took 11.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:36:11,658 INFO L168 Benchmark]: RCFGBuilder took 235.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-11-10 10:36:11,659 INFO L168 Benchmark]: CodeCheck took 421.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2018-11-10 10:36:11,659 INFO L168 Benchmark]: Witness Printer took 34.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:36:11,662 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 20 locations, 2 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 2 SDslu, 2 SDs, 0 SdLazy, 22 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 189 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 17]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] CALL f(4) VAL [\old(n)=4] [L7] COND FALSE !(n<3) [L8] n-- VAL [\old(n)=4, n=3] [L9] CALL f2(n) VAL [\old(n)=3] [L14] COND FALSE !(n<3) [L15] n-- VAL [\old(n)=3, n=2] [L16] CALL f(n) VAL [\old(n)=2] [L7] COND TRUE, RET n<3 VAL [\old(n)=2, n=2] [L16] f(n) VAL [\old(n)=3, n=2] [L17] __VERIFIER_error() VAL [\old(n)=3, n=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.32 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.02 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.39 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 235.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * CodeCheck took 421.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. * Witness Printer took 34.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...