./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/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 bd8a40b9ab0ccbf5be4fcc211d81cb04996473fb .................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-02 01:05:07,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-02 01:05:07,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-02 01:05:07,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-02 01:05:07,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-02 01:05:07,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-02 01:05:07,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-02 01:05:07,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-02 01:05:07,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-02 01:05:07,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-02 01:05:07,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-02 01:05:07,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-02 01:05:07,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-02 01:05:07,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-02 01:05:07,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-02 01:05:07,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-02 01:05:07,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-02 01:05:07,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-02 01:05:07,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-02 01:05:07,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-02 01:05:07,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-02 01:05:07,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-02 01:05:07,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-02 01:05:07,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-02 01:05:07,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-02 01:05:07,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-02 01:05:07,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-02 01:05:07,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-02 01:05:07,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-02 01:05:07,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-02 01:05:07,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-02 01:05:07,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-02 01:05:07,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-02 01:05:07,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-02 01:05:07,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-02 01:05:07,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-02 01:05:07,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-02 01:05:07,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-02 01:05:07,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-02 01:05:07,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-02 01:05:07,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-02 01:05:07,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-12-02 01:05:07,098 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-02 01:05:07,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-02 01:05:07,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-02 01:05:07,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-02 01:05:07,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-02 01:05:07,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-02 01:05:07,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-02 01:05:07,099 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-02 01:05:07,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-02 01:05:07,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-02 01:05:07,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-02 01:05:07,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-02 01:05:07,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-02 01:05:07,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-02 01:05:07,100 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-02 01:05:07,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-02 01:05:07,100 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-02 01:05:07,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-02 01:05:07,101 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-02 01:05:07,101 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-02 01:05:07,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-02 01:05:07,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-02 01:05:07,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-02 01:05:07,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-02 01:05:07,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-02 01:05:07,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-02 01:05:07,102 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-02 01:05:07,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-02 01:05:07,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-02 01:05:07,102 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_cff6c82b-0d6e-4033-b3b0-989fd84d096b/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 -> bd8a40b9ab0ccbf5be4fcc211d81cb04996473fb [2019-12-02 01:05:07,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-02 01:05:07,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-02 01:05:07,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-02 01:05:07,214 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-02 01:05:07,215 INFO L275 PluginConnector]: CDTParser initialized [2019-12-02 01:05:07,215 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2019-12-02 01:05:07,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/data/52bbe1b14/83b6dee994344d01b16ca466683716de/FLAGe2d0c563d [2019-12-02 01:05:07,570 INFO L306 CDTParser]: Found 1 translation units. [2019-12-02 01:05:07,571 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2019-12-02 01:05:07,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/data/52bbe1b14/83b6dee994344d01b16ca466683716de/FLAGe2d0c563d [2019-12-02 01:05:07,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/data/52bbe1b14/83b6dee994344d01b16ca466683716de [2019-12-02 01:05:07,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-02 01:05:07,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-02 01:05:07,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-02 01:05:07,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-02 01:05:07,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-02 01:05:07,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605e252b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07, skipping insertion in model container [2019-12-02 01:05:07,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-02 01:05:07,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-02 01:05:07,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-02 01:05:07,717 INFO L203 MainTranslator]: Completed pre-run [2019-12-02 01:05:07,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-02 01:05:07,768 INFO L208 MainTranslator]: Completed translation [2019-12-02 01:05:07,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07 WrapperNode [2019-12-02 01:05:07,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-02 01:05:07,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-02 01:05:07,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-02 01:05:07,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-02 01:05:07,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-02 01:05:07,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-02 01:05:07,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-02 01:05:07,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-02 01:05:07,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-02 01:05:07,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-02 01:05:07,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-02 01:05:07,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-02 01:05:07,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:05:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/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 [2019-12-02 01:05:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-02 01:05:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-02 01:05:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-12-02 01:05:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-12-02 01:05:07,938 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-02 01:05:07,938 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-02 01:05:07,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:05:07 BoogieIcfgContainer [2019-12-02 01:05:07,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-02 01:05:07,940 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-02 01:05:07,940 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-02 01:05:07,947 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-02 01:05:07,947 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:05:07" (1/1) ... [2019-12-02 01:05:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-02 01:05:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 01:05:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-12-02 01:05:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-12-02 01:05:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-02 01:05:07,981 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 01:05:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 01:05:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-02 01:05:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 01:05:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 22 transitions. [2019-12-02 01:05:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-12-02 01:05:08,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-02 01:05:08,247 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 01:05:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 01:05:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-02 01:05:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 01:05:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 23 states and 32 transitions. [2019-12-02 01:05:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-12-02 01:05:08,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-02 01:05:08,531 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 01:05:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 01:05:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-02 01:05:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 01:05:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 28 states and 44 transitions. [2019-12-02 01:05:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2019-12-02 01:05:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-02 01:05:08,903 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 01:05:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 01:05:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-02 01:05:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 01:05:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 33 states and 58 transitions. [2019-12-02 01:05:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2019-12-02 01:05:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-02 01:05:09,372 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 01:05:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-02 01:05:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-12-02 01:05:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-02 01:05:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 38 states and 74 transitions. [2019-12-02 01:05:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 74 transitions. [2019-12-02 01:05:09,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-02 01:05:09,852 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-02 01:05:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 01:05:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 01:05:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 01:05:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-02 01:05:09,908 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2019-12-02 01:05:09,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 01:05:09 ImpRootNode [2019-12-02 01:05:09,929 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-02 01:05:09,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-02 01:05:09,930 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-02 01:05:09,930 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-02 01:05:09,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:05:07" (3/4) ... [2019-12-02 01:05:09,932 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-02 01:05:09,971 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cff6c82b-0d6e-4033-b3b0-989fd84d096b/bin/ukojak/witness.graphml [2019-12-02 01:05:09,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-02 01:05:09,973 INFO L168 Benchmark]: Toolchain (without parser) took 2386.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 939.8 MB in the beginning and 921.2 MB in the end (delta: 18.6 MB). Peak memory consumption was 120.8 MB. Max. memory is 11.5 GB. [2019-12-02 01:05:09,974 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-02 01:05:09,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-02 01:05:09,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.22 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-02 01:05:09,977 INFO L168 Benchmark]: Boogie Preprocessor took 10.46 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. [2019-12-02 01:05:09,978 INFO L168 Benchmark]: RCFGBuilder took 139.84 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-02 01:05:09,979 INFO L168 Benchmark]: CodeCheck took 1989.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 922.9 MB in the end (delta: 156.5 MB). Peak memory consumption was 156.5 MB. Max. memory is 11.5 GB. [2019-12-02 01:05:09,979 INFO L168 Benchmark]: Witness Printer took 41.38 ms. Allocated memory is still 1.1 GB. Free memory was 922.9 MB in the beginning and 921.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-02 01:05:09,985 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, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 124 SDslu, 152 SDs, 0 SdLazy, 1922 SolverSat, 430 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1147 GetRequests, 1022 SyntacticMatches, 53 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1491 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 8288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 50/100 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: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 5; [L11] CALL, EXPR id(input) VAL [\old(x)=5] [L5] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L6] CALL, EXPR id(x-1) VAL [\old(x)=4] [L5] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L6] CALL, EXPR id(x-1) VAL [\old(x)=3] [L5] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L6] CALL, EXPR id(x-1) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id(x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id(x-1) VAL [\old(x)=0] [L5] COND TRUE x==0 [L5] return 0; VAL [\old(x)=0, \result=0, x=0] [L6] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 5 [L13] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 181.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.22 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.46 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 139.84 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * CodeCheck took 1989.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 922.9 MB in the end (delta: 156.5 MB). Peak memory consumption was 156.5 MB. Max. memory is 11.5 GB. * Witness Printer took 41.38 ms. Allocated memory is still 1.1 GB. Free memory was 922.9 MB in the beginning and 921.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...