./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/sum_15x0_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_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_15x0_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/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 31319b3dce926b7eddaa50d24c240f6870931f21 ................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:43:31,893 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:43:31,894 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:43:31,902 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:43:31,902 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:43:31,902 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:43:31,903 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:43:31,904 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:43:31,905 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:43:31,906 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:43:31,907 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:43:31,907 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:43:31,907 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:43:31,908 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:43:31,909 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:43:31,909 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:43:31,910 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:43:31,911 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:43:31,913 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:43:31,914 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:43:31,914 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:43:31,917 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:43:31,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:43:31,918 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:43:31,919 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:43:31,919 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:43:31,920 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:43:31,920 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:43:31,921 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:43:31,922 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:43:31,922 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:43:31,922 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:43:31,922 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:43:31,923 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:43:31,923 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:43:31,924 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:43:31,924 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-10 05:43:31,934 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:43:31,934 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:43:31,935 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:43:31,935 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 05:43:31,935 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:43:31,936 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:43:31,936 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:43:31,936 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:43:31,936 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:43:31,936 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:43:31,936 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:43:31,936 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:43:31,936 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:43:31,937 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:43:31,937 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:43:31,937 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:43:31,937 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:43:31,937 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 05:43:31,937 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 05:43:31,937 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:43:31,937 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:43:31,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 05:43:31,938 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:43:31,938 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:43:31,938 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:43:31,938 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 05:43:31,938 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:43:31,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:43:31,938 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_0f461a26-eda1-4312-8ff5-cf149add791f/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 -> 31319b3dce926b7eddaa50d24c240f6870931f21 [2018-11-10 05:43:31,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:43:31,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:43:31,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:43:31,975 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:43:31,975 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:43:31,975 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/../../sv-benchmarks/c/recursive-simple/sum_15x0_false-unreach-call_true-termination.c [2018-11-10 05:43:32,019 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/data/7b610bc85/2d0e17a5a49e435ea62a8fffc02aa036/FLAG9846dc05c [2018-11-10 05:43:32,337 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:43:32,337 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/sv-benchmarks/c/recursive-simple/sum_15x0_false-unreach-call_true-termination.c [2018-11-10 05:43:32,341 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/data/7b610bc85/2d0e17a5a49e435ea62a8fffc02aa036/FLAG9846dc05c [2018-11-10 05:43:32,351 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/data/7b610bc85/2d0e17a5a49e435ea62a8fffc02aa036 [2018-11-10 05:43:32,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:43:32,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:43:32,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:43:32,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:43:32,357 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:43:32,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236dc686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32, skipping insertion in model container [2018-11-10 05:43:32,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:43:32,375 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:43:32,471 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:43:32,473 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:43:32,482 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:43:32,490 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:43:32,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32 WrapperNode [2018-11-10 05:43:32,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:43:32,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:43:32,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:43:32,491 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:43:32,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:43:32,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:43:32,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:43:32,509 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:43:32,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:43:32,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:43:32,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:43:32,518 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:43:32,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:43:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/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 05:43:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:43:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:43:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2018-11-10 05:43:32,601 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2018-11-10 05:43:32,690 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:43:32,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:43:32 BoogieIcfgContainer [2018-11-10 05:43:32,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:43:32,691 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 05:43:32,691 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 05:43:32,698 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 05:43:32,698 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:43:32" (1/1) ... [2018-11-10 05:43:32,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:43:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2018-11-10 05:43:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-11-10 05:43:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 05:43:32,732 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:32,848 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 05:43:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 18 transitions. [2018-11-10 05:43:32,909 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-10 05:43:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 05:43:32,909 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 05:43:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 23 transitions. [2018-11-10 05:43:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-11-10 05:43:33,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 05:43:33,086 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 05:43:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 22 states and 29 transitions. [2018-11-10 05:43:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2018-11-10 05:43:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 05:43:33,201 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-10 05:43:33,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 25 states and 36 transitions. [2018-11-10 05:43:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2018-11-10 05:43:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-10 05:43:33,349 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-10 05:43:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 28 states and 44 transitions. [2018-11-10 05:43:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2018-11-10 05:43:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 05:43:33,494 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-10 05:43:33,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 31 states and 53 transitions. [2018-11-10 05:43:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2018-11-10 05:43:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-10 05:43:33,652 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-10 05:43:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 34 states and 63 transitions. [2018-11-10 05:43:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 63 transitions. [2018-11-10 05:43:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-10 05:43:33,817 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-10 05:43:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 37 states and 74 transitions. [2018-11-10 05:43:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 74 transitions. [2018-11-10 05:43:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-10 05:43:33,959 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-10 05:43:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:34,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 40 states and 86 transitions. [2018-11-10 05:43:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 86 transitions. [2018-11-10 05:43:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-10 05:43:34,149 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-10 05:43:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:34,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 43 states and 99 transitions. [2018-11-10 05:43:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 99 transitions. [2018-11-10 05:43:34,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-10 05:43:34,313 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-11-10 05:43:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 46 states and 113 transitions. [2018-11-10 05:43:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 113 transitions. [2018-11-10 05:43:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-11-10 05:43:34,495 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-11-10 05:43:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 49 states and 128 transitions. [2018-11-10 05:43:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 128 transitions. [2018-11-10 05:43:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-10 05:43:34,714 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2018-11-10 05:43:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 52 states and 144 transitions. [2018-11-10 05:43:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 144 transitions. [2018-11-10 05:43:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-10 05:43:34,895 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-11-10 05:43:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 55 states and 161 transitions. [2018-11-10 05:43:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 161 transitions. [2018-11-10 05:43:35,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-10 05:43:35,060 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:43:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2018-11-10 05:43:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 05:43:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 58 states and 179 transitions. [2018-11-10 05:43:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 179 transitions. [2018-11-10 05:43:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-10 05:43:35,259 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 05:43:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:43:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:43:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:43:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:43:35,409 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2018-11-10 05:43:35,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 05:43:35 ImpRootNode [2018-11-10 05:43:35,443 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 05:43:35,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:43:35,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:43:35,444 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:43:35,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:43:32" (3/4) ... [2018-11-10 05:43:35,446 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 05:43:35,508 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0f461a26-eda1-4312-8ff5-cf149add791f/bin-2019/ukojak/witness.graphml [2018-11-10 05:43:35,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:43:35,509 INFO L168 Benchmark]: Toolchain (without parser) took 3154.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 959.1 MB in the beginning and 906.0 MB in the end (delta: 53.1 MB). Peak memory consumption was 266.5 MB. Max. memory is 11.5 GB. [2018-11-10 05:43:35,510 INFO L168 Benchmark]: CDTParser took 0.14 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 05:43:35,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.66 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:43:35,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.62 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:43:35,511 INFO L168 Benchmark]: Boogie Preprocessor took 8.88 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:43:35,512 INFO L168 Benchmark]: RCFGBuilder took 173.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 05:43:35,512 INFO L168 Benchmark]: CodeCheck took 2752.49 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.6 MB). Free memory was 1.1 GB in the beginning and 911.1 MB in the end (delta: 231.9 MB). Peak memory consumption was 288.5 MB. Max. memory is 11.5 GB. [2018-11-10 05:43:35,513 INFO L168 Benchmark]: Witness Printer took 64.67 ms. Allocated memory is still 1.2 GB. Free memory was 911.1 MB in the beginning and 906.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:43:35,517 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 2 procedures, 16 locations, 1 error locations. UNSAFE Result, 2.6s OverallTime, 16 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 229376 SDtfs, 212984 SDslu, 344048 SDs, 0 SdLazy, 999270 SolverSat, 180218 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10038 GetRequests, 9438 SyntacticMatches, 538 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 864 NumberOfCodeBlocks, 864 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 750 ConstructedInterpolants, 0 QuantifiedInterpolants, 122880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 1575/3150 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: 16]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int a = 15; [L13] int b = 0; [L14] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=15] [L4] COND FALSE !(n <= 0) VAL [\old(m)=0, \old(n)=15, m=0, n=15] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=14] [L4] COND FALSE !(n <= 0) VAL [\old(m)=1, \old(n)=14, m=1, n=14] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=13] [L4] COND FALSE !(n <= 0) VAL [\old(m)=2, \old(n)=13, m=2, n=13] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=12] [L4] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=12, m=3, n=12] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=11] [L4] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=11, m=4, n=11] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=10] [L4] COND FALSE !(n <= 0) VAL [\old(m)=5, \old(n)=10, m=5, n=10] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=9] [L4] COND FALSE !(n <= 0) VAL [\old(m)=6, \old(n)=9, m=6, n=9] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=8] [L4] COND FALSE !(n <= 0) VAL [\old(m)=7, \old(n)=8, m=7, n=8] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=7] [L4] COND FALSE !(n <= 0) VAL [\old(m)=8, \old(n)=7, m=8, n=7] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=6] [L4] COND FALSE !(n <= 0) VAL [\old(m)=9, \old(n)=6, m=9, n=6] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=5] [L4] COND FALSE !(n <= 0) VAL [\old(m)=10, \old(n)=5, m=10, n=5] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=4] [L4] COND FALSE !(n <= 0) VAL [\old(m)=11, \old(n)=4, m=11, n=4] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=3] [L4] COND FALSE !(n <= 0) VAL [\old(m)=12, \old(n)=3, m=12, n=3] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=2] [L4] COND FALSE !(n <= 0) VAL [\old(m)=13, \old(n)=2, m=13, n=2] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=1] [L4] COND FALSE !(n <= 0) VAL [\old(m)=14, \old(n)=1, m=14, n=1] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=15, \old(n)=0] [L4] COND TRUE n <= 0 [L5] RET return m + n; VAL [\old(m)=15, \old(n)=0, \result=15, m=15, n=0] [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=1, m=14, n=1, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=2, m=13, n=2, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=3, m=12, n=3, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=4, m=11, n=4, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=5, m=10, n=5, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=6, m=9, n=6, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=7, m=8, n=7, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=8, m=7, n=8, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=9, m=6, n=9, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=10, m=5, n=10, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=11, m=4, n=11, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=12, m=3, n=12, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=13, m=2, n=13, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=14, m=1, n=14, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=15, m=0, n=15, sum(n - 1, m + 1)=15] [L7] RET return sum(n - 1, m + 1); [L14] EXPR sum(a, b) [L14] int result = sum(a, b); [L15] COND TRUE result == a + b [L16] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 135.66 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 17.62 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 8.88 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 173.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * CodeCheck took 2752.49 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.6 MB). Free memory was 1.1 GB in the beginning and 911.1 MB in the end (delta: 231.9 MB). Peak memory consumption was 288.5 MB. Max. memory is 11.5 GB. * Witness Printer took 64.67 ms. Allocated memory is still 1.2 GB. Free memory was 911.1 MB in the beginning and 906.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...