./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/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 0497b69437c9ebb889888bdb31aaefcc8eaad029 ................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:15:59,987 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:15:59,989 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:16:00,010 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:16:00,013 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:16:00,013 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:16:00,014 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:16:00,016 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:16:00,017 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:16:00,018 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:16:00,018 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:16:00,019 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:16:00,019 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:16:00,020 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:16:00,021 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:16:00,022 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:16:00,022 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:16:00,024 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:16:00,025 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:16:00,026 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:16:00,027 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:16:00,028 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:16:00,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:16:00,031 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:16:00,031 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:16:00,032 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:16:00,032 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:16:00,033 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:16:00,034 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:16:00,035 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:16:00,035 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:16:00,035 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:16:00,036 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:16:00,036 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:16:00,037 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:16:00,037 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:16:00,038 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-10-26 21:16:00,050 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:16:00,050 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:16:00,051 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:16:00,051 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:16:00,052 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:16:00,052 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:16:00,052 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:16:00,053 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:16:00,053 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:16:00,053 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:16:00,053 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:16:00,053 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:16:00,053 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:16:00,054 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:16:00,054 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:16:00,054 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:16:00,054 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:16:00,054 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-10-26 21:16:00,054 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-10-26 21:16:00,055 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:16:00,055 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:16:00,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-26 21:16:00,055 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:16:00,055 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:16:00,055 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:16:00,056 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-10-26 21:16:00,056 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:16:00,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:16:00,056 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_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/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 -> 0497b69437c9ebb889888bdb31aaefcc8eaad029 [2018-10-26 21:16:00,086 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:16:00,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:16:00,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:16:00,108 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:16:00,108 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:16:00,109 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/../../sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-10-26 21:16:00,168 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/data/99c06f9fa/c146697544074254a8b8b9f5ba737890/FLAG0c02c8f81 [2018-10-26 21:16:00,542 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:16:00,543 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/sv-benchmarks/c/recursive/gcd01_true-unreach-call_true-no-overflow_true-termination.c [2018-10-26 21:16:00,547 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/data/99c06f9fa/c146697544074254a8b8b9f5ba737890/FLAG0c02c8f81 [2018-10-26 21:16:00,559 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/data/99c06f9fa/c146697544074254a8b8b9f5ba737890 [2018-10-26 21:16:00,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:16:00,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:16:00,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:16:00,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:16:00,567 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:16:00,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267e2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00, skipping insertion in model container [2018-10-26 21:16:00,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:16:00,590 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:16:00,707 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:16:00,709 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:16:00,720 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:16:00,732 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:16:00,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00 WrapperNode [2018-10-26 21:16:00,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:16:00,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:16:00,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:16:00,733 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:16:00,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:16:00,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:16:00,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:16:00,755 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:16:00,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... [2018-10-26 21:16:00,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:16:00,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:16:00,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:16:00,767 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:16:00,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/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 [2018-10-26 21:16:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:16:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:16:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-10-26 21:16:00,873 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-10-26 21:16:01,233 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:16:01,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:16:01 BoogieIcfgContainer [2018-10-26 21:16:01,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:16:01,234 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-10-26 21:16:01,234 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-10-26 21:16:01,242 INFO L276 PluginConnector]: CodeCheck initialized [2018-10-26 21:16:01,242 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:16:01" (1/1) ... [2018-10-26 21:16:01,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:16:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 21:16:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2018-10-26 21:16:01,299 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2018-10-26 21:16:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 21:16:01,308 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 21:16:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:16:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 21:16:01,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 22 states and 32 transitions. [2018-10-26 21:16:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2018-10-26 21:16:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 21:16:01,812 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 21:16:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:16:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 21:16:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 26 states and 40 transitions. [2018-10-26 21:16:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 40 transitions. [2018-10-26 21:16:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 21:16:02,845 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 21:16:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 21:16:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 21:16:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 26 states and 39 transitions. [2018-10-26 21:16:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 39 transitions. [2018-10-26 21:16:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 21:16:03,095 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 21:16:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 21:16:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 21:16:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 26 states and 38 transitions. [2018-10-26 21:16:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2018-10-26 21:16:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 21:16:03,503 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 21:16:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 21:16:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 21:16:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 27 states and 39 transitions. [2018-10-26 21:16:03,608 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2018-10-26 21:16:03,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 21:16:03,609 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 21:16:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:16:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 21:16:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 21:16:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 20 states and 28 transitions. [2018-10-26 21:16:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2018-10-26 21:16:03,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 21:16:03,728 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 7 iterations. [2018-10-26 21:16:03,736 INFO L778 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2018-10-26 21:16:03,810 INFO L582 CodeCheckObserver]: Invariant with dag size 1 [2018-10-26 21:16:03,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 26.10 09:16:03 ImpRootNode [2018-10-26 21:16:03,813 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-10-26 21:16:03,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:16:03,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:16:03,813 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:16:03,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:16:01" (3/4) ... [2018-10-26 21:16:03,816 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 21:16:03,823 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2018-10-26 21:16:03,828 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-26 21:16:03,828 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-26 21:16:03,828 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-26 21:16:03,871 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_70d83381-e24f-4ce0-8a75-9fe4cf4be25c/bin-2019/ukojak/witness.graphml [2018-10-26 21:16:03,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:16:03,872 INFO L168 Benchmark]: Toolchain (without parser) took 3310.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 960.7 MB in the beginning and 952.8 MB in the end (delta: 7.9 MB). Peak memory consumption was 164.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:16:03,874 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:16:03,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.24 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:16:03,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.05 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:16:03,875 INFO L168 Benchmark]: Boogie Preprocessor took 11.72 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:16:03,876 INFO L168 Benchmark]: RCFGBuilder took 466.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2018-10-26 21:16:03,877 INFO L168 Benchmark]: CodeCheck took 2579.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.5 MB in the end (delta: 183.5 MB). Peak memory consumption was 183.5 MB. Max. memory is 11.5 GB. [2018-10-26 21:16:03,877 INFO L168 Benchmark]: Witness Printer took 58.61 ms. Allocated memory is still 1.2 GB. Free memory was 955.5 MB in the beginning and 952.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:16:03,880 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, 22 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 7 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 688 SDtfs, 240 SDslu, 384 SDs, 0 SdLazy, 2008 SolverSat, 704 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 859 GetRequests, 802 SyntacticMatches, 17 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3739 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 18/18 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 - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 * 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.24 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 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 22.05 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.72 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 466.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * CodeCheck took 2579.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 955.5 MB in the end (delta: 183.5 MB). Peak memory consumption was 183.5 MB. Max. memory is 11.5 GB. * Witness Printer took 58.61 ms. Allocated memory is still 1.2 GB. Free memory was 955.5 MB in the beginning and 952.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...