./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/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 bd8a40b9ab0ccbf5be4fcc211d81cb04996473fb .......................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-08 13:43:28,502 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 13:43:28,503 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 13:43:28,510 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 13:43:28,510 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 13:43:28,511 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 13:43:28,511 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 13:43:28,512 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 13:43:28,513 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 13:43:28,514 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 13:43:28,514 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 13:43:28,515 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 13:43:28,515 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 13:43:28,516 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 13:43:28,517 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 13:43:28,517 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 13:43:28,518 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 13:43:28,519 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 13:43:28,520 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 13:43:28,521 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 13:43:28,522 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 13:43:28,523 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 13:43:28,525 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 13:43:28,525 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 13:43:28,525 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 13:43:28,526 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 13:43:28,526 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 13:43:28,527 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 13:43:28,527 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 13:43:28,528 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 13:43:28,528 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 13:43:28,529 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 13:43:28,529 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 13:43:28,529 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 13:43:28,530 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 13:43:28,530 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 13:43:28,530 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-08 13:43:28,540 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 13:43:28,540 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 13:43:28,541 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 13:43:28,541 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-08 13:43:28,542 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 13:43:28,542 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 13:43:28,542 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 13:43:28,542 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 13:43:28,542 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 13:43:28,542 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 13:43:28,542 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 13:43:28,543 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 13:43:28,543 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 13:43:28,543 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 13:43:28,543 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 13:43:28,543 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 13:43:28,543 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 13:43:28,543 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 13:43:28,543 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-08 13:43:28,543 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-08 13:43:28,544 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 13:43:28,544 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 13:43:28,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-08 13:43:28,544 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 13:43:28,544 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 13:43:28,544 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 13:43:28,544 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-08 13:43:28,544 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 13:43:28,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 13:43:28,544 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_f416964d-3625-4eb4-b82f-12e9943ca3a1/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 -> bd8a40b9ab0ccbf5be4fcc211d81cb04996473fb [2018-12-08 13:43:28,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 13:43:28,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 13:43:28,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 13:43:28,578 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 13:43:28,578 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 13:43:28,579 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/../../sv-benchmarks/c/recursive-simple/id_i5_o5_false-unreach-call_true-termination.c [2018-12-08 13:43:28,622 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/data/54d137262/82da103b9cc74c6ab6a26a79057dfa78/FLAG7bd082479 [2018-12-08 13:43:28,914 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 13:43:28,915 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/sv-benchmarks/c/recursive-simple/id_i5_o5_false-unreach-call_true-termination.c [2018-12-08 13:43:28,918 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/data/54d137262/82da103b9cc74c6ab6a26a79057dfa78/FLAG7bd082479 [2018-12-08 13:43:28,926 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/data/54d137262/82da103b9cc74c6ab6a26a79057dfa78 [2018-12-08 13:43:28,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 13:43:28,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 13:43:28,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 13:43:28,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 13:43:28,931 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 13:43:28,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 01:43:28" (1/1) ... [2018-12-08 13:43:28,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359bc049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:28, skipping insertion in model container [2018-12-08 13:43:28,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 01:43:28" (1/1) ... [2018-12-08 13:43:28,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 13:43:28,946 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 13:43:29,028 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 13:43:29,031 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 13:43:29,038 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 13:43:29,046 INFO L195 MainTranslator]: Completed translation [2018-12-08 13:43:29,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29 WrapperNode [2018-12-08 13:43:29,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 13:43:29,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 13:43:29,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 13:43:29,047 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 13:43:29,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 13:43:29,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 13:43:29,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 13:43:29,064 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 13:43:29,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 13:43:29,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 13:43:29,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 13:43:29,075 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 13:43:29,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:43:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/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 [2018-12-08 13:43:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 13:43:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 13:43:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-12-08 13:43:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-12-08 13:43:29,217 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 13:43:29,217 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 13:43:29,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 01:43:29 BoogieIcfgContainer [2018-12-08 13:43:29,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 13:43:29,218 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-08 13:43:29,218 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-08 13:43:29,225 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-08 13:43:29,225 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 01:43:29" (1/1) ... [2018-12-08 13:43:29,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 13:43:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 13:43:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2018-12-08 13:43:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-12-08 13:43:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 13:43:29,259 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 13:43:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 13:43:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 13:43:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 13:43:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 18 transitions. [2018-12-08 13:43:29,403 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-12-08 13:43:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-08 13:43:29,403 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 13:43:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 13:43:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 13:43:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 13:43:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 23 transitions. [2018-12-08 13:43:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-12-08 13:43:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 13:43:29,501 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 13:43:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 13:43:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-08 13:43:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 13:43:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 22 states and 29 transitions. [2018-12-08 13:43:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2018-12-08 13:43:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-08 13:43:29,602 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 13:43:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 13:43:29,732 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-08 13:43:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 13:43:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 35 states and 56 transitions. [2018-12-08 13:43:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2018-12-08 13:43:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-08 13:43:30,377 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 13:43:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 13:43:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-08 13:43:30,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 13:43:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 38 states and 64 transitions. [2018-12-08 13:43:30,678 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2018-12-08 13:43:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-08 13:43:30,679 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 13:43:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 13:43:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-08 13:43:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-08 13:43:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 41 states and 74 transitions. [2018-12-08 13:43:30,883 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 74 transitions. [2018-12-08 13:43:30,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-08 13:43:30,884 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-08 13:43:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:43:30,927 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2018-12-08 13:43:30,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.12 01:43:30 ImpRootNode [2018-12-08 13:43:30,946 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-08 13:43:30,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 13:43:30,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 13:43:30,946 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 13:43:30,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 01:43:29" (3/4) ... [2018-12-08 13:43:30,948 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 13:43:30,979 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f416964d-3625-4eb4-b82f-12e9943ca3a1/bin-2019/ukojak/witness.graphml [2018-12-08 13:43:30,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 13:43:30,980 INFO L168 Benchmark]: Toolchain (without parser) took 2052.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.1 MB). Free memory was 962.5 MB in the beginning and 1.1 GB in the end (delta: -118.8 MB). Peak memory consumption was 88.3 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:30,981 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 13:43:30,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 117.85 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:30,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.41 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 13:43:30,982 INFO L168 Benchmark]: Boogie Preprocessor took 10.29 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 13:43:30,983 INFO L168 Benchmark]: RCFGBuilder took 143.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:30,983 INFO L168 Benchmark]: CodeCheck took 1727.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.5 MB). Peak memory consumption was 102.8 MB. Max. memory is 11.5 GB. [2018-12-08 13:43:30,984 INFO L168 Benchmark]: Witness Printer took 33.34 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. [2018-12-08 13:43:30,987 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, 15 locations, 1 error locations. UNSAFE Result, 1.6s OverallTime, 7 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 448 SDtfs, 428 SDslu, 696 SDs, 0 SdLazy, 2638 SolverSat, 690 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1373 GetRequests, 1235 SyntacticMatches, 58 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2031 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 8008 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 76/152 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: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 5; [L11] CALL, EXPR id(input) VAL [\old(x)=5] [L5] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L6] CALL, EXPR id(x-1) VAL [\old(x)=4] [L5] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L6] CALL, EXPR id(x-1) VAL [\old(x)=3] [L5] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L6] CALL, EXPR id(x-1) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id(x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id(x-1) VAL [\old(x)=0] [L5] COND TRUE x==0 [L5] return 0; VAL [\old(x)=0, \result=0, x=0] [L6] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 5 [L13] __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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 117.85 ms. Allocated memory is still 1.0 GB. Free memory was 962.5 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.41 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.29 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 143.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -163.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * CodeCheck took 1727.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.5 MB). Peak memory consumption was 102.8 MB. Max. memory is 11.5 GB. * Witness Printer took 33.34 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. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...