./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_15x0-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_15x0-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/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 0.1.24-cad4683 [2019-10-22 10:12:26,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 10:12:26,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 10:12:26,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 10:12:26,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 10:12:26,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 10:12:26,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 10:12:26,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 10:12:26,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 10:12:26,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 10:12:26,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 10:12:26,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 10:12:26,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 10:12:26,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 10:12:26,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 10:12:26,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 10:12:26,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 10:12:26,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 10:12:26,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 10:12:26,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 10:12:26,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 10:12:26,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 10:12:26,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 10:12:26,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 10:12:26,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 10:12:26,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 10:12:26,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 10:12:26,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 10:12:26,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 10:12:26,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 10:12:26,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 10:12:26,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 10:12:26,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 10:12:26,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 10:12:26,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 10:12:26,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 10:12:26,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 10:12:26,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 10:12:26,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 10:12:26,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 10:12:26,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 10:12:26,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-10-22 10:12:26,175 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 10:12:26,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 10:12:26,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 10:12:26,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-10-22 10:12:26,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 10:12:26,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 10:12:26,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 10:12:26,186 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 10:12:26,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 10:12:26,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 10:12:26,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 10:12:26,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 10:12:26,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 10:12:26,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 10:12:26,187 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 10:12:26,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 10:12:26,187 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 10:12:26,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 10:12:26,187 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-10-22 10:12:26,187 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-10-22 10:12:26,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 10:12:26,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 10:12:26,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:12:26,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 10:12:26,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 10:12:26,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 10:12:26,188 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-10-22 10:12:26,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 10:12:26,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 10:12:26,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/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 [2019-10-22 10:12:26,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 10:12:26,224 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 10:12:26,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 10:12:26,231 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 10:12:26,231 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 10:12:26,232 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/../../sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2019-10-22 10:12:26,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/data/e67a18cbc/68c049c0ddcb4c0f9e52cbba51265ca0/FLAGe51ffb414 [2019-10-22 10:12:26,678 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 10:12:26,678 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2019-10-22 10:12:26,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/data/e67a18cbc/68c049c0ddcb4c0f9e52cbba51265ca0/FLAGe51ffb414 [2019-10-22 10:12:26,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/data/e67a18cbc/68c049c0ddcb4c0f9e52cbba51265ca0 [2019-10-22 10:12:26,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 10:12:26,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 10:12:26,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 10:12:26,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 10:12:26,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 10:12:26,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:26,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509c72ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26, skipping insertion in model container [2019-10-22 10:12:26,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:26,719 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 10:12:26,733 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 10:12:26,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:12:26,905 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 10:12:26,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:12:26,992 INFO L192 MainTranslator]: Completed translation [2019-10-22 10:12:26,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26 WrapperNode [2019-10-22 10:12:26,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 10:12:26,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 10:12:26,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 10:12:26,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 10:12:27,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:27,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:27,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 10:12:27,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 10:12:27,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 10:12:27,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 10:12:27,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:27,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:27,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:27,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:27,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:27,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:27,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... [2019-10-22 10:12:27,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 10:12:27,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 10:12:27,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 10:12:27,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 10:12:27,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:12:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/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 [2019-10-22 10:12:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 10:12:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 10:12:27,107 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-10-22 10:12:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-10-22 10:12:27,261 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 10:12:27,261 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 10:12:27,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:27 BoogieIcfgContainer [2019-10-22 10:12:27,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 10:12:27,264 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-10-22 10:12:27,264 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-10-22 10:12:27,283 INFO L275 PluginConnector]: CodeCheck initialized [2019-10-22 10:12:27,294 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:27" (1/1) ... [2019-10-22 10:12:27,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 10:12:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-10-22 10:12:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-10-22 10:12:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 10:12:27,405 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:12:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 22 transitions. [2019-10-22 10:12:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-10-22 10:12:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 10:12:27,881 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 10:12:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 32 transitions. [2019-10-22 10:12:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-10-22 10:12:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 10:12:28,424 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 10:12:29,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 28 states and 44 transitions. [2019-10-22 10:12:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2019-10-22 10:12:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 10:12:29,100 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 10:12:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 33 states and 58 transitions. [2019-10-22 10:12:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2019-10-22 10:12:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 10:12:29,886 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 10:12:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 38 states and 74 transitions. [2019-10-22 10:12:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 74 transitions. [2019-10-22 10:12:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 10:12:30,653 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-22 10:12:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 43 states and 92 transitions. [2019-10-22 10:12:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 92 transitions. [2019-10-22 10:12:31,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 10:12:31,528 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-22 10:12:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 48 states and 112 transitions. [2019-10-22 10:12:32,569 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 112 transitions. [2019-10-22 10:12:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-22 10:12:32,571 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-22 10:12:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 53 states and 134 transitions. [2019-10-22 10:12:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 134 transitions. [2019-10-22 10:12:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-22 10:12:33,683 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-10-22 10:12:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 58 states and 158 transitions. [2019-10-22 10:12:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 158 transitions. [2019-10-22 10:12:34,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-22 10:12:34,852 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-10-22 10:12:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 63 states and 184 transitions. [2019-10-22 10:12:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 184 transitions. [2019-10-22 10:12:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-22 10:12:36,082 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-10-22 10:12:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 68 states and 212 transitions. [2019-10-22 10:12:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 212 transitions. [2019-10-22 10:12:37,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-22 10:12:37,351 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-10-22 10:12:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 73 states and 242 transitions. [2019-10-22 10:12:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 242 transitions. [2019-10-22 10:12:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-22 10:12:38,830 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-10-22 10:12:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 78 states and 274 transitions. [2019-10-22 10:12:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 274 transitions. [2019-10-22 10:12:40,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-22 10:12:40,371 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-10-22 10:12:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 83 states and 308 transitions. [2019-10-22 10:12:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 308 transitions. [2019-10-22 10:12:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-22 10:12:41,951 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:12:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-10-22 10:12:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:12:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 88 states and 344 transitions. [2019-10-22 10:12:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 344 transitions. [2019-10-22 10:12:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-22 10:12:43,939 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:12:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:12:44,110 WARN L489 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2019-10-22 10:12:44,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.10 10:12:44 ImpRootNode [2019-10-22 10:12:44,182 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-10-22 10:12:44,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 10:12:44,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 10:12:44,183 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 10:12:44,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:12:27" (3/4) ... [2019-10-22 10:12:44,185 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 10:12:44,258 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0e1821fb-9616-4639-8afc-e8b5d0c54667/bin/ukojak/witness.graphml [2019-10-22 10:12:44,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 10:12:44,262 INFO L168 Benchmark]: Toolchain (without parser) took 17561.55 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 412.6 MB). Free memory was 945.9 MB in the beginning and 949.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 409.3 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:44,263 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:12:44,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 945.9 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:44,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:44,266 INFO L168 Benchmark]: Boogie Preprocessor took 14.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:12:44,266 INFO L168 Benchmark]: RCFGBuilder took 223.63 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:44,266 INFO L168 Benchmark]: CodeCheck took 16918.62 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 257.4 MB). Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 168.7 MB). Peak memory consumption was 426.1 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:44,266 INFO L168 Benchmark]: Witness Printer took 77.26 ms. Allocated memory is still 1.4 GB. Free memory was 964.3 MB in the beginning and 949.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-10-22 10:12:44,268 INFO L335 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, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 16.7s, OverallIterations: 16, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 180224 SDtfs, 131068 SDslu, 163832 SDs, 0 SdLazy, 2113220 SolverSat, 475116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14173 GetRequests, 13365 SyntacticMatches, 576 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24766 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 864 NumberOfCodeBlocks, 864 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 750 ConstructedInterpolants, 0 QuantifiedInterpolants, 276480 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 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] return m + n; VAL [\old(m)=15, \old(n)=0, \result=15, m=15, n=0] [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=1, m=14, n=1, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=2, m=13, n=2, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=3, m=12, n=3, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=4, m=11, n=4, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=5, m=10, n=5, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=6, m=9, n=6, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=7, m=8, n=7, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=8, m=7, n=8, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=9, m=6, n=9, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=10, m=5, n=10, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=11, m=4, n=11, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=12, m=3, n=12, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=13, m=2, n=13, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=14, m=1, n=14, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=15, m=0, n=15, sum(n - 1, m + 1)=15] [L7] return sum(n - 1, m + 1); [L14] RET, 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 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 945.9 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 223.63 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * CodeCheck took 16918.62 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 257.4 MB). Free memory was 1.1 GB in the beginning and 964.3 MB in the end (delta: 168.7 MB). Peak memory consumption was 426.1 MB. Max. memory is 11.5 GB. * Witness Printer took 77.26 ms. Allocated memory is still 1.4 GB. Free memory was 964.3 MB in the beginning and 949.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...