./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/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_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/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 0.1.23-635dfa2 [2018-12-01 15:17:08,298 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 15:17:08,299 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 15:17:08,305 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 15:17:08,305 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 15:17:08,306 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 15:17:08,306 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 15:17:08,307 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 15:17:08,308 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 15:17:08,308 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 15:17:08,309 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 15:17:08,309 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 15:17:08,309 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 15:17:08,310 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 15:17:08,310 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 15:17:08,311 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 15:17:08,311 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 15:17:08,312 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 15:17:08,313 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 15:17:08,314 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 15:17:08,314 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 15:17:08,315 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 15:17:08,316 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 15:17:08,316 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 15:17:08,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 15:17:08,316 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 15:17:08,317 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 15:17:08,317 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 15:17:08,318 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 15:17:08,318 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 15:17:08,318 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 15:17:08,319 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 15:17:08,319 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 15:17:08,319 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 15:17:08,319 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 15:17:08,320 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 15:17:08,320 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-01 15:17:08,327 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 15:17:08,327 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 15:17:08,327 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 15:17:08,327 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-01 15:17:08,328 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 15:17:08,328 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 15:17:08,328 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 15:17:08,328 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 15:17:08,328 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 15:17:08,328 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 15:17:08,328 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 15:17:08,328 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 15:17:08,328 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 15:17:08,329 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 15:17:08,329 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 15:17:08,329 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 15:17:08,329 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 15:17:08,329 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 15:17:08,329 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-01 15:17:08,329 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-01 15:17:08,329 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 15:17:08,329 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 15:17:08,329 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-01 15:17:08,330 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 15:17:08,330 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 15:17:08,330 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 15:17:08,330 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-01 15:17:08,330 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 15:17:08,330 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 15:17:08,330 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_b84d6d42-31fc-47cb-ac7b-78501522e70e/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 [2018-12-01 15:17:08,347 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 15:17:08,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 15:17:08,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 15:17:08,357 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 15:17:08,358 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 15:17:08,358 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/../../sv-benchmarks/c/recursive/Fibonacci04_false-unreach-call_true-no-overflow_true-termination.c [2018-12-01 15:17:08,396 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/data/d526959ba/13fb969dc7344ec9941944a232276ef2/FLAG95d1013ef [2018-12-01 15:17:08,701 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 15:17:08,702 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/sv-benchmarks/c/recursive/Fibonacci04_false-unreach-call_true-no-overflow_true-termination.c [2018-12-01 15:17:08,705 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/data/d526959ba/13fb969dc7344ec9941944a232276ef2/FLAG95d1013ef [2018-12-01 15:17:09,135 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/data/d526959ba/13fb969dc7344ec9941944a232276ef2 [2018-12-01 15:17:09,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 15:17:09,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 15:17:09,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 15:17:09,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 15:17:09,142 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 15:17:09,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@870cb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09, skipping insertion in model container [2018-12-01 15:17:09,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 15:17:09,160 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 15:17:09,242 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 15:17:09,244 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 15:17:09,253 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 15:17:09,260 INFO L195 MainTranslator]: Completed translation [2018-12-01 15:17:09,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09 WrapperNode [2018-12-01 15:17:09,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 15:17:09,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 15:17:09,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 15:17:09,261 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 15:17:09,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 15:17:09,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 15:17:09,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 15:17:09,278 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 15:17:09,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 15:17:09,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 15:17:09,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 15:17:09,287 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 15:17:09,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:17:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/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 [2018-12-01 15:17:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2018-12-01 15:17:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2018-12-01 15:17:09,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 15:17:09,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 15:17:09,443 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 15:17:09,443 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-01 15:17:09,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:17:09 BoogieIcfgContainer [2018-12-01 15:17:09,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 15:17:09,444 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-01 15:17:09,444 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-01 15:17:09,451 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-01 15:17:09,451 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:17:09" (1/1) ... [2018-12-01 15:17:09,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 15:17:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2018-12-01 15:17:09,482 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2018-12-01 15:17:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-01 15:17:09,486 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 15:17:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 21 states and 28 transitions. [2018-12-01 15:17:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2018-12-01 15:17:09,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 15:17:09,639 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 15:17:09,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2018-12-01 15:17:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2018-12-01 15:17:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-01 15:17:09,769 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-01 15:17:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 34 transitions. [2018-12-01 15:17:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2018-12-01 15:17:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 15:17:09,924 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-01 15:17:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 32 states and 49 transitions. [2018-12-01 15:17:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 49 transitions. [2018-12-01 15:17:10,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-01 15:17:10,164 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-01 15:17:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 32 states and 48 transitions. [2018-12-01 15:17:10,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2018-12-01 15:17:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-01 15:17:10,272 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-12-01 15:17:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 37 states and 60 transitions. [2018-12-01 15:17:10,447 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2018-12-01 15:17:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-01 15:17:10,448 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-12-01 15:17:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 39 states and 64 transitions. [2018-12-01 15:17:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 64 transitions. [2018-12-01 15:17:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-12-01 15:17:10,584 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-12-01 15:17:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:10,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 44 states and 78 transitions. [2018-12-01 15:17:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 78 transitions. [2018-12-01 15:17:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-12-01 15:17:10,794 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 41 proven. 82 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2018-12-01 15:17:10,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:10,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 46 states and 82 transitions. [2018-12-01 15:17:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 82 transitions. [2018-12-01 15:17:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-12-01 15:17:10,959 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 241 proven. 102 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2018-12-01 15:17:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 51 states and 82 transitions. [2018-12-01 15:17:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 82 transitions. [2018-12-01 15:17:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-12-01 15:17:11,911 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:17:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 145 proven. 154 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2018-12-01 15:17:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:17:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 53 states and 80 transitions. [2018-12-01 15:17:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 80 transitions. [2018-12-01 15:17:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-12-01 15:17:12,245 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:17:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 15:17:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 15:17:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 15:17:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 15:17:12,318 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2018-12-01 15:17:12,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 03:17:12 ImpRootNode [2018-12-01 15:17:12,344 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-01 15:17:12,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 15:17:12,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 15:17:12,345 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 15:17:12,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:17:09" (3/4) ... [2018-12-01 15:17:12,347 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 15:17:12,404 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b84d6d42-31fc-47cb-ac7b-78501522e70e/bin-2019/ukojak/witness.graphml [2018-12-01 15:17:12,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 15:17:12,405 INFO L168 Benchmark]: Toolchain (without parser) took 3266.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 960.3 MB in the beginning and 713.4 MB in the end (delta: 246.8 MB). Peak memory consumption was 410.4 MB. Max. memory is 11.5 GB. [2018-12-01 15:17:12,406 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-12-01 15:17:12,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.03 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 15:17:12,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.03 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 15:17:12,407 INFO L168 Benchmark]: Boogie Preprocessor took 9.10 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 944.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-01 15:17:12,407 INFO L168 Benchmark]: RCFGBuilder took 156.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 69.7 MB). Free memory was 944.2 MB in the beginning and 1.0 GB in the end (delta: -101.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-01 15:17:12,408 INFO L168 Benchmark]: CodeCheck took 2900.20 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 93.8 MB). Free memory was 1.0 GB in the beginning and 714.9 MB in the end (delta: 330.5 MB). Peak memory consumption was 424.4 MB. Max. memory is 11.5 GB. [2018-12-01 15:17:12,409 INFO L168 Benchmark]: Witness Printer took 59.32 ms. Allocated memory is still 1.2 GB. Free memory was 714.9 MB in the beginning and 713.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2018-12-01 15:17:12,418 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, 18 locations, 1 error locations. UNSAFE Result, 2.8s 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, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3627 GetRequests, 3386 SyntacticMatches, 139 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4468 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 685 NumberOfCodeBlocks, 685 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 569 ConstructedInterpolants, 0 QuantifiedInterpolants, 81131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 1957/2393 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] return 1; VAL [\old(n)=1, \result=1, n=1] [L22] RET, 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] return 0; VAL [\old(n)=0, \result=0, n=0] [L22] RET, EXPR fibonacci(n-2) VAL [\old(n)=2, fibonacci(n-1)=1, fibonacci(n-2)=0, n=2] [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, 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] return 1; VAL [\old(n)=1, \result=1, n=1] [L22] RET, EXPR fibonacci(n-2) VAL [\old(n)=3, fibonacci(n-1)=1, fibonacci(n-2)=1, n=3] [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, 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] return 1; VAL [\old(n)=1, \result=1, n=1] [L22] RET, 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] return 0; VAL [\old(n)=0, \result=0, n=0] [L22] RET, EXPR fibonacci(n-2) VAL [\old(n)=2, fibonacci(n-1)=1, fibonacci(n-2)=0, n=2] [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-2) VAL [\old(n)=4, fibonacci(n-1)=2, fibonacci(n-2)=1, n=4] [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, 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] return 1; VAL [\old(n)=1, \result=1, n=1] [L22] RET, 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] return 0; VAL [\old(n)=0, \result=0, n=0] [L22] RET, EXPR fibonacci(n-2) VAL [\old(n)=2, fibonacci(n-1)=1, fibonacci(n-2)=0, n=2] [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, 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] return 1; VAL [\old(n)=1, \result=1, n=1] [L22] RET, EXPR fibonacci(n-2) VAL [\old(n)=3, fibonacci(n-1)=1, fibonacci(n-2)=1, n=3] [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-2) VAL [\old(n)=5, fibonacci(n-1)=3, fibonacci(n-2)=2, n=5] [L22] return fibonacci(n-1) + fibonacci(n-2); [L29] RET, 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 0.10 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 121.03 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.5 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 17.03 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.10 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 944.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 156.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 69.7 MB). Free memory was 944.2 MB in the beginning and 1.0 GB in the end (delta: -101.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * CodeCheck took 2900.20 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 93.8 MB). Free memory was 1.0 GB in the beginning and 714.9 MB in the end (delta: 330.5 MB). Peak memory consumption was 424.4 MB. Max. memory is 11.5 GB. * Witness Printer took 59.32 ms. Allocated memory is still 1.2 GB. Free memory was 714.9 MB in the beginning and 713.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...