./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive/Fibonacci04_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci04_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/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 d3562c726fb0df5872bc6ae08c11ec0d40862c19 ........................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 01:09:58,317 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 01:09:58,318 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 01:09:58,328 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 01:09:58,328 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 01:09:58,329 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 01:09:58,330 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 01:09:58,332 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 01:09:58,333 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 01:09:58,334 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 01:09:58,334 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 01:09:58,335 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 01:09:58,336 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 01:09:58,337 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 01:09:58,338 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 01:09:58,338 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 01:09:58,339 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 01:09:58,341 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 01:09:58,343 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 01:09:58,344 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 01:09:58,345 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 01:09:58,346 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 01:09:58,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 01:09:58,348 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 01:09:58,348 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 01:09:58,349 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 01:09:58,350 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 01:09:58,350 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 01:09:58,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 01:09:58,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 01:09:58,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 01:09:58,353 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 01:09:58,353 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 01:09:58,354 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 01:09:58,354 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 01:09:58,355 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 01:09:58,355 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-10 01:09:58,366 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 01:09:58,366 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 01:09:58,367 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 01:09:58,367 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 01:09:58,368 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 01:09:58,368 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 01:09:58,368 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 01:09:58,368 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 01:09:58,368 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 01:09:58,368 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 01:09:58,369 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 01:09:58,369 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 01:09:58,369 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 01:09:58,369 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 01:09:58,369 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 01:09:58,369 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 01:09:58,369 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 01:09:58,369 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 01:09:58,370 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 01:09:58,370 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 01:09:58,370 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 01:09:58,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 01:09:58,370 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 01:09:58,370 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 01:09:58,370 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 01:09:58,370 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 01:09:58,371 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 01:09:58,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 01:09:58,371 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_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/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 -> d3562c726fb0df5872bc6ae08c11ec0d40862c19 [2018-11-10 01:09:58,397 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 01:09:58,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 01:09:58,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 01:09:58,408 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 01:09:58,408 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 01:09:58,409 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/../../sv-benchmarks/c/recursive/Fibonacci04_false-unreach-call_true-no-overflow_true-termination.c [2018-11-10 01:09:58,457 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/data/658385ccc/c8f85fdf03a84befb07ca12e8691c737/FLAG0651f9c4e [2018-11-10 01:09:58,797 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 01:09:58,798 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/sv-benchmarks/c/recursive/Fibonacci04_false-unreach-call_true-no-overflow_true-termination.c [2018-11-10 01:09:58,803 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/data/658385ccc/c8f85fdf03a84befb07ca12e8691c737/FLAG0651f9c4e [2018-11-10 01:09:58,814 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/data/658385ccc/c8f85fdf03a84befb07ca12e8691c737 [2018-11-10 01:09:58,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 01:09:58,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 01:09:58,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 01:09:58,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 01:09:58,821 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 01:09:58,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:58,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61258a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58, skipping insertion in model container [2018-11-10 01:09:58,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:58,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 01:09:58,843 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 01:09:58,963 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 01:09:58,965 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 01:09:58,977 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 01:09:58,987 INFO L193 MainTranslator]: Completed translation [2018-11-10 01:09:58,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58 WrapperNode [2018-11-10 01:09:58,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 01:09:58,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 01:09:58,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 01:09:58,988 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 01:09:58,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:58,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:59,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 01:09:59,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 01:09:59,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 01:09:59,009 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 01:09:59,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:59,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:59,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:59,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:59,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:59,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:59,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... [2018-11-10 01:09:59,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 01:09:59,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 01:09:59,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 01:09:59,020 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 01:09:59,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:09:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 01:09:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2018-11-10 01:09:59,102 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2018-11-10 01:09:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 01:09:59,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 01:09:59,217 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 01:09:59,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:09:59 BoogieIcfgContainer [2018-11-10 01:09:59,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 01:09:59,218 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 01:09:59,219 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 01:09:59,228 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 01:09:59,228 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:09:59" (1/1) ... [2018-11-10 01:09:59,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 01:09:59,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:09:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2018-11-10 01:09:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2018-11-10 01:09:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 01:09:59,269 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:09:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:09:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:09:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:09:59,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 21 states and 28 transitions. [2018-11-10 01:09:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2018-11-10 01:09:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 01:09:59,468 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:09:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:09:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 01:09:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:09:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2018-11-10 01:09:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2018-11-10 01:09:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 01:09:59,674 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:09:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:09:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 01:09:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:09:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 34 transitions. [2018-11-10 01:09:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2018-11-10 01:09:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 01:09:59,875 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:09:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:09:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 01:10:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:10:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 32 states and 49 transitions. [2018-11-10 01:10:00,215 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 49 transitions. [2018-11-10 01:10:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-10 01:10:00,216 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:10:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:10:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-10 01:10:00,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:10:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 32 states and 48 transitions. [2018-11-10 01:10:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2018-11-10 01:10:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-10 01:10:00,348 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:10:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:10:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-10 01:10:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:10:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 37 states and 60 transitions. [2018-11-10 01:10:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2018-11-10 01:10:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-10 01:10:00,589 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:10:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:10:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 16 proven. 75 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-10 01:10:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:10:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 39 states and 64 transitions. [2018-11-10 01:10:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2018-11-10 01:10:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-10 01:10:00,770 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:10:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:10:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 41 proven. 82 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2018-11-10 01:10:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:10:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 46 states and 82 transitions. [2018-11-10 01:10:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 82 transitions. [2018-11-10 01:10:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-10 01:10:01,157 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:10:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:10:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 294 proven. 145 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2018-11-10 01:10:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:10:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 51 states and 82 transitions. [2018-11-10 01:10:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 82 transitions. [2018-11-10 01:10:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-10 01:10:02,334 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:10:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 01:10:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 145 proven. 154 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2018-11-10 01:10:02,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 01:10:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 53 states and 80 transitions. [2018-11-10 01:10:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 80 transitions. [2018-11-10 01:10:02,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-10 01:10:02,786 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 01:10:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:10:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:10:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:10:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 01:10:02,890 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2018-11-10 01:10:02,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 01:10:02 ImpRootNode [2018-11-10 01:10:02,928 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 01:10:02,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 01:10:02,929 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 01:10:02,929 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 01:10:02,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:09:59" (3/4) ... [2018-11-10 01:10:02,932 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 01:10:03,021 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ad2ccdf6-5f2f-4319-adc7-bccd69eb8117/bin-2019/ukojak/witness.graphml [2018-11-10 01:10:03,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 01:10:03,022 INFO L168 Benchmark]: Toolchain (without parser) took 4205.18 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 295.2 MB). Free memory was 960.2 MB in the beginning and 1.2 GB in the end (delta: -273.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-11-10 01:10:03,024 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:10:03,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.33 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. [2018-11-10 01:10:03,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.65 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:10:03,026 INFO L168 Benchmark]: Boogie Preprocessor took 11.02 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 01:10:03,027 INFO L168 Benchmark]: RCFGBuilder took 198.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-10 01:10:03,028 INFO L168 Benchmark]: CodeCheck took 3709.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 124.8 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -76.7 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. [2018-11-10 01:10:03,029 INFO L168 Benchmark]: Witness Printer took 93.23 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 01:10:03,034 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, 19 locations, 1 error locations. UNSAFE Result, 3.6s OverallTime, 11 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7368 SDtfs, 7644 SDslu, 12176 SDs, 0 SdLazy, 32892 SolverSat, 8984 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3261 GetRequests, 3042 SyntacticMatches, 117 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4538 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 663 NumberOfCodeBlocks, 663 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 548 ConstructedInterpolants, 0 QuantifiedInterpolants, 87270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 2276/2757 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: 33]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L28] int x = __VERIFIER_nondet_int(); [L29] CALL, EXPR fibonacci(x) VAL [\old(n)=5] [L17] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L19] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L22] CALL, EXPR fibonacci(n-1) VAL [\old(n)=4] [L17] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L19] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L22] CALL, EXPR fibonacci(n-1) VAL [\old(n)=3] [L17] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L19] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L22] CALL, EXPR fibonacci(n-1) VAL [\old(n)=2] [L17] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L19] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L22] CALL, EXPR fibonacci(n-1) VAL [\old(n)=1] [L17] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L19] COND TRUE n == 1 [L20] RET return 1; VAL [\old(n)=1, \result=1, n=1] [L22] EXPR fibonacci(n-1) VAL [\old(n)=2, fibonacci(n-1)=1, n=2] [L22] CALL, EXPR fibonacci(n-2) VAL [\old(n)=0] [L17] COND TRUE n < 1 [L18] RET return 0; VAL [\old(n)=0, \result=0, n=0] [L22] EXPR fibonacci(n-2) VAL [\old(n)=2, fibonacci(n-1)=1, fibonacci(n-2)=0, n=2] [L22] RET return fibonacci(n-1) + fibonacci(n-2); [L22] EXPR fibonacci(n-1) VAL [\old(n)=3, fibonacci(n-1)=1, n=3] [L22] CALL, EXPR fibonacci(n-2) VAL [\old(n)=1] [L17] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L19] COND TRUE n == 1 [L20] RET return 1; VAL [\old(n)=1, \result=1, n=1] [L22] EXPR fibonacci(n-2) VAL [\old(n)=3, fibonacci(n-1)=1, fibonacci(n-2)=1, n=3] [L22] RET return fibonacci(n-1) + fibonacci(n-2); [L22] EXPR fibonacci(n-1) VAL [\old(n)=4, fibonacci(n-1)=2, n=4] [L22] CALL, EXPR fibonacci(n-2) VAL [\old(n)=2] [L17] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L19] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L22] CALL, EXPR fibonacci(n-1) VAL [\old(n)=1] [L17] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L19] COND TRUE n == 1 [L20] RET return 1; VAL [\old(n)=1, \result=1, n=1] [L22] EXPR fibonacci(n-1) VAL [\old(n)=2, fibonacci(n-1)=1, n=2] [L22] CALL, EXPR fibonacci(n-2) VAL [\old(n)=0] [L17] COND TRUE n < 1 [L18] RET return 0; VAL [\old(n)=0, \result=0, n=0] [L22] EXPR fibonacci(n-2) VAL [\old(n)=2, fibonacci(n-1)=1, fibonacci(n-2)=0, n=2] [L22] RET return fibonacci(n-1) + fibonacci(n-2); [L22] EXPR fibonacci(n-2) VAL [\old(n)=4, fibonacci(n-1)=2, fibonacci(n-2)=1, n=4] [L22] RET return fibonacci(n-1) + fibonacci(n-2); [L22] EXPR fibonacci(n-1) VAL [\old(n)=5, fibonacci(n-1)=3, n=5] [L22] CALL, EXPR fibonacci(n-2) VAL [\old(n)=3] [L17] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L19] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L22] CALL, EXPR fibonacci(n-1) VAL [\old(n)=2] [L17] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L19] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L22] CALL, EXPR fibonacci(n-1) VAL [\old(n)=1] [L17] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L19] COND TRUE n == 1 [L20] RET return 1; VAL [\old(n)=1, \result=1, n=1] [L22] EXPR fibonacci(n-1) VAL [\old(n)=2, fibonacci(n-1)=1, n=2] [L22] CALL, EXPR fibonacci(n-2) VAL [\old(n)=0] [L17] COND TRUE n < 1 [L18] RET return 0; VAL [\old(n)=0, \result=0, n=0] [L22] EXPR fibonacci(n-2) VAL [\old(n)=2, fibonacci(n-1)=1, fibonacci(n-2)=0, n=2] [L22] RET return fibonacci(n-1) + fibonacci(n-2); [L22] EXPR fibonacci(n-1) VAL [\old(n)=3, fibonacci(n-1)=1, n=3] [L22] CALL, EXPR fibonacci(n-2) VAL [\old(n)=1] [L17] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L19] COND TRUE n == 1 [L20] RET return 1; VAL [\old(n)=1, \result=1, n=1] [L22] EXPR fibonacci(n-2) VAL [\old(n)=3, fibonacci(n-1)=1, fibonacci(n-2)=1, n=3] [L22] RET return fibonacci(n-1) + fibonacci(n-2); [L22] EXPR fibonacci(n-2) VAL [\old(n)=5, fibonacci(n-1)=3, fibonacci(n-2)=2, n=5] [L22] RET return fibonacci(n-1) + fibonacci(n-2); [L29] EXPR fibonacci(x) [L29] int result = fibonacci(x); [L30] COND FALSE !(x != 5 || result == 3) [L33] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.33 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.65 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.02 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -211.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * CodeCheck took 3709.66 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 124.8 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -76.7 MB). Peak memory consumption was 48.1 MB. Max. memory is 11.5 GB. * Witness Printer took 93.23 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...