./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Fibonacci04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci04.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/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 0.1.24-678e011 [2019-11-19 22:33:12,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:33:12,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:33:12,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:33:12,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:33:12,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:33:12,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:33:12,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:33:13,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:33:13,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:33:13,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:33:13,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:33:13,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:33:13,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:33:13,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:33:13,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:33:13,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:33:13,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:33:13,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:33:13,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:33:13,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:33:13,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:33:13,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:33:13,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:33:13,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:33:13,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:33:13,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:33:13,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:33:13,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:33:13,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:33:13,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:33:13,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:33:13,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:33:13,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:33:13,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:33:13,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:33:13,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:33:13,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:33:13,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:33:13,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:33:13,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:33:13,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-19 22:33:13,059 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:33:13,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:33:13,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-19 22:33:13,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-19 22:33:13,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:33:13,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:33:13,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:33:13,061 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:33:13,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:33:13,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:33:13,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:33:13,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:33:13,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:33:13,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:33:13,063 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:33:13,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:33:13,063 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:33:13,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:33:13,063 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-19 22:33:13,064 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-19 22:33:13,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:33:13,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:33:13,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-19 22:33:13,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:33:13,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:33:13,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:33:13,065 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-19 22:33:13,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:33:13,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:33:13,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__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 [2019-11-19 22:33:13,195 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:33:13,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:33:13,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:33:13,209 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:33:13,210 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:33:13,210 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/../../sv-benchmarks/c/recursive/Fibonacci04.c [2019-11-19 22:33:13,258 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/data/1b8d99996/ec5ececf4b4f47c39f900a9ed4ba0fe4/FLAG677b49700 [2019-11-19 22:33:13,660 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:33:13,660 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/sv-benchmarks/c/recursive/Fibonacci04.c [2019-11-19 22:33:13,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/data/1b8d99996/ec5ececf4b4f47c39f900a9ed4ba0fe4/FLAG677b49700 [2019-11-19 22:33:13,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/data/1b8d99996/ec5ececf4b4f47c39f900a9ed4ba0fe4 [2019-11-19 22:33:13,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:33:13,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:33:13,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:33:13,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:33:13,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:33:13,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a153f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13, skipping insertion in model container [2019-11-19 22:33:13,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:13,700 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:33:13,716 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:33:13,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:33:13,958 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:33:13,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:33:13,992 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:33:13,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13 WrapperNode [2019-11-19 22:33:13,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:33:13,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:33:13,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:33:13,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:33:14,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:14,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:14,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:33:14,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:33:14,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:33:14,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:33:14,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:14,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:14,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:14,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:14,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:14,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:14,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... [2019-11-19 22:33:14,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:33:14,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:33:14,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:33:14,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:33:14,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:33:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-19 22:33:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2019-11-19 22:33:14,117 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2019-11-19 22:33:14,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:33:14,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:33:14,287 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:33:14,288 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 22:33:14,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:33:14 BoogieIcfgContainer [2019-11-19 22:33:14,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:33:14,289 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-19 22:33:14,290 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-19 22:33:14,299 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-19 22:33:14,299 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:33:14" (1/1) ... [2019-11-19 22:33:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:33:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:33:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2019-11-19 22:33:14,356 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-19 22:33:14,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 22:33:14,360 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:33:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:14,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:33:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 21 states and 28 transitions. [2019-11-19 22:33:14,638 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2019-11-19 22:33:14,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 22:33:14,639 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:33:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:33:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:33:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2019-11-19 22:33:14,967 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-19 22:33:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-19 22:33:14,968 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:33:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-19 22:33:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:33:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 28 states and 42 transitions. [2019-11-19 22:33:15,083 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2019-11-19 22:33:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 22:33:15,084 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:33:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-19 22:33:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:33:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 35 states and 59 transitions. [2019-11-19 22:33:15,429 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 59 transitions. [2019-11-19 22:33:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-19 22:33:15,432 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:33:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-19 22:33:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:33:15,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 35 states and 58 transitions. [2019-11-19 22:33:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2019-11-19 22:33:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-19 22:33:15,675 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:33:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-19 22:33:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:33:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 42 states and 76 transitions. [2019-11-19 22:33:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2019-11-19 22:33:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-19 22:33:16,201 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:33:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 60 proven. 143 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-11-19 22:33:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:33:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 44 states and 78 transitions. [2019-11-19 22:33:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 78 transitions. [2019-11-19 22:33:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-19 22:33:17,319 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:33:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:33:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-19 22:33:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 22:33:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 49 states and 94 transitions. [2019-11-19 22:33:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 94 transitions. [2019-11-19 22:33:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-19 22:33:17,770 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 22:33:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:33:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:33:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:33:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:33:17,958 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 9 iterations. [2019-11-19 22:33:18,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 10:33:18 ImpRootNode [2019-11-19 22:33:18,023 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-19 22:33:18,024 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:33:18,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:33:18,024 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:33:18,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:33:14" (3/4) ... [2019-11-19 22:33:18,026 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 22:33:18,140 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ba6e983f-0238-4c76-96cd-8481aaa29711/bin/ukojak/witness.graphml [2019-11-19 22:33:18,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:33:18,145 INFO L168 Benchmark]: Toolchain (without parser) took 4459.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 944.8 MB in the beginning and 916.6 MB in the end (delta: 28.2 MB). Peak memory consumption was 147.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:18,150 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:33:18,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:18,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:33:18,151 INFO L168 Benchmark]: Boogie Preprocessor took 20.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:33:18,151 INFO L168 Benchmark]: RCFGBuilder took 240.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:18,152 INFO L168 Benchmark]: CodeCheck took 3733.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 923.5 MB in the end (delta: 172.0 MB). Peak memory consumption was 172.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:18,152 INFO L168 Benchmark]: Witness Printer took 119.32 ms. Allocated memory is still 1.1 GB. Free memory was 923.5 MB in the beginning and 916.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-19 22:33:18,154 INFO L335 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, 17 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1912 SDtfs, 2100 SDslu, 3368 SDs, 0 SdLazy, 9222 SolverSat, 2234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2187 GetRequests, 2006 SyntacticMatches, 107 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 271 ConstructedInterpolants, 0 QuantifiedInterpolants, 31893 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 332/607 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 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 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 240.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * CodeCheck took 3733.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 923.5 MB in the end (delta: 172.0 MB). Peak memory consumption was 172.0 MB. Max. memory is 11.5 GB. * Witness Printer took 119.32 ms. Allocated memory is still 1.1 GB. Free memory was 923.5 MB in the beginning and 916.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...