./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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/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_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/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 0.1.23-5842f4b [2018-11-18 11:21:52,656 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:21:52,657 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:21:52,663 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:21:52,664 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:21:52,664 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:21:52,666 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:21:52,667 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:21:52,668 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:21:52,669 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:21:52,670 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:21:52,670 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:21:52,671 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:21:52,671 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:21:52,672 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:21:52,673 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:21:52,674 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:21:52,675 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:21:52,676 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:21:52,678 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:21:52,679 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:21:52,680 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:21:52,681 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:21:52,682 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:21:52,682 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:21:52,683 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:21:52,683 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:21:52,684 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:21:52,684 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:21:52,685 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:21:52,685 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:21:52,686 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:21:52,686 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:21:52,686 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:21:52,687 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:21:52,687 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:21:52,688 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 11:21:52,698 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:21:52,698 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:21:52,699 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:21:52,699 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:21:52,700 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:21:52,700 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:21:52,700 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:21:52,700 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:21:52,700 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:21:52,700 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:21:52,700 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:21:52,701 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:21:52,701 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:21:52,701 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:21:52,701 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:21:52,701 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:21:52,701 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:21:52,701 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:21:52,702 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 11:21:52,702 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 11:21:52,702 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:21:52,702 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:21:52,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 11:21:52,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:21:52,702 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:21:52,702 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:21:52,703 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 11:21:52,703 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:21:52,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:21:52,703 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_edc7eab0-ff99-4936-a524-b0455bfcb0da/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 [2018-11-18 11:21:52,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:21:52,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:21:52,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:21:52,745 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:21:52,745 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:21:52,746 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/../../sv-benchmarks/c/recursive/Fibonacci04_false-unreach-call_true-no-overflow_true-termination.c [2018-11-18 11:21:52,789 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/data/5f30d30db/5ab489527df848bd8db20ed50417ec56/FLAGf3f44cec6 [2018-11-18 11:21:53,126 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:21:53,126 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/sv-benchmarks/c/recursive/Fibonacci04_false-unreach-call_true-no-overflow_true-termination.c [2018-11-18 11:21:53,132 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/data/5f30d30db/5ab489527df848bd8db20ed50417ec56/FLAGf3f44cec6 [2018-11-18 11:21:53,552 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/data/5f30d30db/5ab489527df848bd8db20ed50417ec56 [2018-11-18 11:21:53,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:21:53,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:21:53,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:21:53,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:21:53,562 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:21:53,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d7180b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53, skipping insertion in model container [2018-11-18 11:21:53,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:21:53,585 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:21:53,722 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:21:53,724 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:21:53,736 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:21:53,747 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:21:53,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53 WrapperNode [2018-11-18 11:21:53,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:21:53,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:21:53,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:21:53,749 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:21:53,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:21:53,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:21:53,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:21:53,775 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:21:53,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... [2018-11-18 11:21:53,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:21:53,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:21:53,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:21:53,790 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:21:53,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:21:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/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 [2018-11-18 11:21:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2018-11-18 11:21:53,930 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2018-11-18 11:21:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:21:53,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:21:54,138 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:21:54,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:21:54 BoogieIcfgContainer [2018-11-18 11:21:54,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:21:54,139 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 11:21:54,140 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 11:21:54,150 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 11:21:54,150 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:21:54" (1/1) ... [2018-11-18 11:21:54,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:21:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2018-11-18 11:21:54,198 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2018-11-18 11:21:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 11:21:54,204 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:21:54,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 21 states and 28 transitions. [2018-11-18 11:21:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2018-11-18 11:21:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:21:54,539 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:21:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2018-11-18 11:21:54,845 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2018-11-18 11:21:54,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 11:21:54,846 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 11:21:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 34 transitions. [2018-11-18 11:21:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2018-11-18 11:21:55,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 11:21:55,293 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 11:21:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 32 states and 49 transitions. [2018-11-18 11:21:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 49 transitions. [2018-11-18 11:21:55,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 11:21:55,667 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-18 11:21:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 32 states and 48 transitions. [2018-11-18 11:21:55,809 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2018-11-18 11:21:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 11:21:55,810 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-18 11:21:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 37 states and 60 transitions. [2018-11-18 11:21:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2018-11-18 11:21:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-18 11:21:56,065 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 16 proven. 75 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-18 11:21:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 39 states and 64 transitions. [2018-11-18 11:21:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2018-11-18 11:21:56,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-18 11:21:56,266 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-18 11:21:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 44 states and 78 transitions. [2018-11-18 11:21:56,573 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 78 transitions. [2018-11-18 11:21:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-18 11:21:56,575 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 41 proven. 82 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2018-11-18 11:21:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 46 states and 82 transitions. [2018-11-18 11:21:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 82 transitions. [2018-11-18 11:21:56,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-18 11:21:56,888 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 241 proven. 102 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2018-11-18 11:21:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 51 states and 82 transitions. [2018-11-18 11:21:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 82 transitions. [2018-11-18 11:21:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-18 11:21:58,471 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:21:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 145 proven. 154 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2018-11-18 11:21:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 11:21:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 53 states and 80 transitions. [2018-11-18 11:21:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 80 transitions. [2018-11-18 11:21:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-18 11:21:59,092 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 11:21:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:21:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:21:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:21:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:21:59,220 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2018-11-18 11:21:59,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 11:21:59 ImpRootNode [2018-11-18 11:21:59,265 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 11:21:59,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:21:59,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:21:59,266 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:21:59,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:21:54" (3/4) ... [2018-11-18 11:21:59,268 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 11:21:59,365 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_edc7eab0-ff99-4936-a524-b0455bfcb0da/bin-2019/ukojak/witness.graphml [2018-11-18 11:21:59,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:21:59,365 INFO L168 Benchmark]: Toolchain (without parser) took 5808.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.9 MB). Free memory was 959.7 MB in the beginning and 925.6 MB in the end (delta: 34.0 MB). Peak memory consumption was 214.9 MB. Max. memory is 11.5 GB. [2018-11-18 11:21:59,367 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-18 11:21:59,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.52 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:21:59,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:21:59,368 INFO L168 Benchmark]: Boogie Preprocessor took 15.07 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:21:59,368 INFO L168 Benchmark]: RCFGBuilder took 349.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2018-11-18 11:21:59,369 INFO L168 Benchmark]: CodeCheck took 5125.70 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.7 MB). Free memory was 1.1 GB in the beginning and 930.4 MB in the end (delta: 201.6 MB). Peak memory consumption was 238.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:21:59,369 INFO L168 Benchmark]: Witness Printer took 99.36 ms. Allocated memory is still 1.2 GB. Free memory was 930.4 MB in the beginning and 925.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:21:59,373 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, 5.0s OverallTime, 12 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14696 SDtfs, 15212 SDslu, 24240 SDs, 0 SdLazy, 65332 SolverSat, 17792 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3681 GetRequests, 3440 SyntacticMatches, 139 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4468 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 699 NumberOfCodeBlocks, 699 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 583 ConstructedInterpolants, 0 QuantifiedInterpolants, 83315 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 2013/2476 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 0.17 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 189.52 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.07 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 349.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * CodeCheck took 5125.70 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 36.7 MB). Free memory was 1.1 GB in the beginning and 930.4 MB in the end (delta: 201.6 MB). Peak memory consumption was 238.3 MB. Max. memory is 11.5 GB. * Witness Printer took 99.36 ms. Allocated memory is still 1.2 GB. Free memory was 930.4 MB in the beginning and 925.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...