./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_15x0-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e05071c3cebf6e34b512f97f960682899d887306 ........................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 17:29:28,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:29:28,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:29:28,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:29:28,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:29:28,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:29:28,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:29:28,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:29:28,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:29:28,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:29:28,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:29:28,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:29:28,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:29:28,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:29:28,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:29:28,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:29:28,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:29:28,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:29:28,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:29:28,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:29:28,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:29:28,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:29:28,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:29:28,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:29:28,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:29:28,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:29:28,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:29:28,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:29:28,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:29:28,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:29:28,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:29:28,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:29:28,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:29:28,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:29:28,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:29:28,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:29:28,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:29:28,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:29:28,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:29:28,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:29:28,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:29:28,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 17:29:28,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:29:28,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:29:28,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:29:28,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:29:28,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:29:28,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:29:28,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:29:28,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:29:28,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:29:28,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:29:28,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:29:28,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:29:28,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:29:28,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:29:28,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:29:28,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:29:28,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:29:28,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:29:28,892 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:29:28,892 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:29:28,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:29:28,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:29:28,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:29:28,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:29:28,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:29:28,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:29:28,894 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:29:28,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:29:28,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:29:28,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e05071c3cebf6e34b512f97f960682899d887306 [2020-12-01 17:29:29,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:29:29,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:29:29,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:29:29,215 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:29:29,217 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:29:29,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/../../sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2020-12-01 17:29:29,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/data/d015d74e4/5ee6285cd48e4d5991c6229b73137e65/FLAGa1d8eca7a [2020-12-01 17:29:29,773 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:29:29,774 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/sv-benchmarks/c/recursive-simple/sum_15x0-2.c [2020-12-01 17:29:29,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/data/d015d74e4/5ee6285cd48e4d5991c6229b73137e65/FLAGa1d8eca7a [2020-12-01 17:29:30,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/data/d015d74e4/5ee6285cd48e4d5991c6229b73137e65 [2020-12-01 17:29:30,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:29:30,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:29:30,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:29:30,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:29:30,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:29:30,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c597fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30, skipping insertion in model container [2020-12-01 17:29:30,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:29:30,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:29:30,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:29:30,389 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:29:30,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:29:30,418 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:29:30,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30 WrapperNode [2020-12-01 17:29:30,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:29:30,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:29:30,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:29:30,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:29:30,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:29:30,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:29:30,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:29:30,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:29:30,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:29:30,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:29:30,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:29:30,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:29:30,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:29:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/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 [2020-12-01 17:29:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:29:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:29:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-12-01 17:29:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-12-01 17:29:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:29:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:29:30,910 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:29:30,910 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 17:29:30,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:29:30 BoogieIcfgContainer [2020-12-01 17:29:30,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:29:30,914 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:29:30,914 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:29:30,943 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:29:30,944 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:29:30" (1/1) ... [2020-12-01 17:29:30,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:29:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:30,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-12-01 17:29:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-01 17:29:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 17:29:30,999 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:29:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 18 transitions. [2020-12-01 17:29:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-01 17:29:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 17:29:31,324 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:29:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 23 transitions. [2020-12-01 17:29:31,592 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-01 17:29:31,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 17:29:31,593 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-01 17:29:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 22 states and 29 transitions. [2020-12-01 17:29:31,809 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2020-12-01 17:29:31,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 17:29:31,810 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 17:29:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 25 states and 36 transitions. [2020-12-01 17:29:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-12-01 17:29:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 17:29:31,994 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-01 17:29:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 28 states and 44 transitions. [2020-12-01 17:29:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2020-12-01 17:29:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-01 17:29:32,237 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-01 17:29:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 31 states and 53 transitions. [2020-12-01 17:29:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2020-12-01 17:29:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 17:29:32,536 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-01 17:29:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 34 states and 63 transitions. [2020-12-01 17:29:32,827 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 63 transitions. [2020-12-01 17:29:32,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 17:29:32,837 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-12-01 17:29:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 37 states and 74 transitions. [2020-12-01 17:29:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 74 transitions. [2020-12-01 17:29:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-01 17:29:33,114 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-12-01 17:29:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 40 states and 86 transitions. [2020-12-01 17:29:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 86 transitions. [2020-12-01 17:29:33,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-01 17:29:33,496 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-12-01 17:29:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 43 states and 99 transitions. [2020-12-01 17:29:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 99 transitions. [2020-12-01 17:29:33,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-01 17:29:33,772 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-12-01 17:29:34,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:34,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 46 states and 113 transitions. [2020-12-01 17:29:34,075 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 113 transitions. [2020-12-01 17:29:34,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-01 17:29:34,076 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-12-01 17:29:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:34,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 49 states and 128 transitions. [2020-12-01 17:29:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 128 transitions. [2020-12-01 17:29:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-01 17:29:34,427 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-12-01 17:29:34,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 52 states and 144 transitions. [2020-12-01 17:29:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 144 transitions. [2020-12-01 17:29:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-01 17:29:34,800 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-12-01 17:29:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 55 states and 161 transitions. [2020-12-01 17:29:35,209 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 161 transitions. [2020-12-01 17:29:35,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-01 17:29:35,214 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:29:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-12-01 17:29:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:29:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 58 states and 179 transitions. [2020-12-01 17:29:35,692 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 179 transitions. [2020-12-01 17:29:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-01 17:29:35,696 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:29:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:29:35,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:29:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:29:35,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:29:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:29:35,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:29:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 17:29:35,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 17:29:36,478 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2020-12-01 17:29:36,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:29:36 ImpRootNode [2020-12-01 17:29:36,571 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:29:36,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:29:36,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:29:36,572 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:29:36,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:29:30" (3/4) ... [2020-12-01 17:29:36,575 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 17:29:36,649 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_11c23d8d-1221-4f8f-b995-80df8a700289/bin/ukojak/witness.graphml [2020-12-01 17:29:36,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:29:36,651 INFO L168 Benchmark]: Toolchain (without parser) took 6497.62 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 71.7 MB in the beginning and 97.1 MB in the end (delta: -25.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-12-01 17:29:36,652 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 78.7 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:29:36,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.98 ms. Allocated memory is still 107.0 MB. Free memory was 71.5 MB in the beginning and 82.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:29:36,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.01 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:29:36,654 INFO L168 Benchmark]: Boogie Preprocessor took 29.69 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 80.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:29:36,655 INFO L168 Benchmark]: RCFGBuilder took 419.97 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 67.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 17:29:36,655 INFO L168 Benchmark]: CodeCheck took 5657.39 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 67.5 MB in the beginning and 102.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-12-01 17:29:36,656 INFO L168 Benchmark]: Witness Printer took 77.87 ms. Allocated memory is still 157.3 MB. Free memory was 102.3 MB in the beginning and 97.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 17:29:36,659 INFO L339 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. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.5s, OverallIterations: 16, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 229376 SDtfs, 212984 SDslu, 344048 SDs, 0 SdLazy, 999270 SolverSat, 180218 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10038 GetRequests, 9438 SyntacticMatches, 538 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s 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 DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int a = 15; [L15] int b = 0; [L16] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=15] [L6] COND FALSE !(n <= 0) VAL [\old(m)=0, \old(n)=15, m=0, n=15] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=14] [L6] COND FALSE !(n <= 0) VAL [\old(m)=1, \old(n)=14, m=1, n=14] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=13] [L6] COND FALSE !(n <= 0) VAL [\old(m)=2, \old(n)=13, m=2, n=13] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=12] [L6] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=12, m=3, n=12] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=11] [L6] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=11, m=4, n=11] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=10] [L6] COND FALSE !(n <= 0) VAL [\old(m)=5, \old(n)=10, m=5, n=10] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=9] [L6] COND FALSE !(n <= 0) VAL [\old(m)=6, \old(n)=9, m=6, n=9] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=8] [L6] COND FALSE !(n <= 0) VAL [\old(m)=7, \old(n)=8, m=7, n=8] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=7] [L6] COND FALSE !(n <= 0) VAL [\old(m)=8, \old(n)=7, m=8, n=7] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=6] [L6] COND FALSE !(n <= 0) VAL [\old(m)=9, \old(n)=6, m=9, n=6] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=5] [L6] COND FALSE !(n <= 0) VAL [\old(m)=10, \old(n)=5, m=10, n=5] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=4] [L6] COND FALSE !(n <= 0) VAL [\old(m)=11, \old(n)=4, m=11, n=4] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=3] [L6] COND FALSE !(n <= 0) VAL [\old(m)=12, \old(n)=3, m=12, n=3] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=2] [L6] COND FALSE !(n <= 0) VAL [\old(m)=13, \old(n)=2, m=13, n=2] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=1] [L6] COND FALSE !(n <= 0) VAL [\old(m)=14, \old(n)=1, m=14, n=1] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=15, \old(n)=0] [L6] COND TRUE n <= 0 [L7] return m + n; VAL [\old(m)=15, \old(n)=0, \result=15, m=15, n=0] [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=1, m=14, n=1, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=2, m=13, n=2, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=3, m=12, n=3, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=4, m=11, n=4, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=5, m=10, n=5, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=6, m=9, n=6, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=7, m=8, n=7, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=8, m=7, n=8, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=9, m=6, n=9, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=10, m=5, n=10, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=11, m=4, n=11, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=12, m=3, n=12, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=13, m=2, n=13, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=14, m=1, n=14, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=15, m=0, n=15, sum(n - 1, m + 1)=15] [L9] return sum(n - 1, m + 1); [L16] RET, EXPR sum(a, b) [L16] int result = sum(a, b); [L17] COND TRUE result == a + b [L3] __assert_fail("0", "sum_15x0-2.c", 3, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 107.0 MB. Free memory was 78.8 MB in the beginning and 78.7 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.98 ms. Allocated memory is still 107.0 MB. Free memory was 71.5 MB in the beginning and 82.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.01 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.69 ms. Allocated memory is still 107.0 MB. Free memory was 81.1 MB in the beginning and 80.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 419.97 ms. Allocated memory is still 107.0 MB. Free memory was 80.0 MB in the beginning and 67.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 5657.39 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 67.5 MB in the beginning and 102.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Witness Printer took 77.87 ms. Allocated memory is still 157.3 MB. Free memory was 102.3 MB in the beginning and 97.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...