./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 60bddbffe1e2002d3081296e00d2a4e7e030158e ................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 12:15:26,742 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 12:15:26,743 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 12:15:26,750 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 12:15:26,750 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 12:15:26,751 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 12:15:26,752 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 12:15:26,753 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 12:15:26,754 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 12:15:26,754 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 12:15:26,755 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 12:15:26,755 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 12:15:26,756 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 12:15:26,757 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 12:15:26,757 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 12:15:26,758 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 12:15:26,758 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 12:15:26,760 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 12:15:26,761 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 12:15:26,762 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 12:15:26,763 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 12:15:26,764 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 12:15:26,765 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 12:15:26,765 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 12:15:26,765 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 12:15:26,766 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 12:15:26,767 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 12:15:26,767 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 12:15:26,768 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 12:15:26,769 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 12:15:26,769 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 12:15:26,769 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 12:15:26,770 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 12:15:26,770 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 12:15:26,770 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 12:15:26,771 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 12:15:26,771 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2018-11-23 12:15:26,781 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 12:15:26,782 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 12:15:26,782 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 12:15:26,782 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-11-23 12:15:26,783 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 12:15:26,783 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 12:15:26,783 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 12:15:26,783 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 12:15:26,783 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 12:15:26,784 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 12:15:26,784 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 12:15:26,784 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 12:15:26,784 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 12:15:26,784 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 12:15:26,784 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 12:15:26,784 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 12:15:26,784 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 12:15:26,784 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-23 12:15:26,785 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-23 12:15:26,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 12:15:26,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 12:15:26,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-23 12:15:26,785 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 12:15:26,785 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 12:15:26,785 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 12:15:26,785 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-23 12:15:26,785 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 12:15:26,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 12:15:26,786 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_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60bddbffe1e2002d3081296e00d2a4e7e030158e [2018-11-23 12:15:26,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 12:15:26,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 12:15:26,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 12:15:26,819 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 12:15:26,819 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 12:15:26,819 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/../../sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-11-23 12:15:26,857 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/data/fdb835d37/71764da403494733b5b81b2e12fd9310/FLAG898431398 [2018-11-23 12:15:27,273 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 12:15:27,274 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-11-23 12:15:27,278 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/data/fdb835d37/71764da403494733b5b81b2e12fd9310/FLAG898431398 [2018-11-23 12:15:27,288 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/data/fdb835d37/71764da403494733b5b81b2e12fd9310 [2018-11-23 12:15:27,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 12:15:27,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 12:15:27,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 12:15:27,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 12:15:27,295 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 12:15:27,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22877cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27, skipping insertion in model container [2018-11-23 12:15:27,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 12:15:27,314 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 12:15:27,424 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:15:27,426 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 12:15:27,437 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:15:27,445 INFO L195 MainTranslator]: Completed translation [2018-11-23 12:15:27,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27 WrapperNode [2018-11-23 12:15:27,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 12:15:27,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 12:15:27,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 12:15:27,447 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 12:15:27,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 12:15:27,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 12:15:27,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 12:15:27,468 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 12:15:27,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 12:15:27,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 12:15:27,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 12:15:27,478 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 12:15:27,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:15:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-23 12:15:27,545 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-23 12:15:27,546 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-23 12:15:27,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 12:15:27,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 12:15:27,678 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 12:15:27,678 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-23 12:15:27,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:15:27 BoogieIcfgContainer [2018-11-23 12:15:27,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 12:15:27,679 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-23 12:15:27,679 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-23 12:15:27,687 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-23 12:15:27,687 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:15:27" (1/1) ... [2018-11-23 12:15:27,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:15:27,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 12:15:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2018-11-23 12:15:27,731 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2018-11-23 12:15:27,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 12:15:27,735 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 12:15:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:15:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:15:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 12:15:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 40 transitions. [2018-11-23 12:15:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2018-11-23 12:15:27,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 12:15:27,990 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 12:15:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:15:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:15:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 12:15:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 50 transitions. [2018-11-23 12:15:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2018-11-23 12:15:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 12:15:28,419 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 12:15:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:15:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:15:28,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 12:15:28,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 34 states and 49 transitions. [2018-11-23 12:15:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-11-23 12:15:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-23 12:15:28,559 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 12:15:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:15:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:15:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 12:15:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 33 states and 48 transitions. [2018-11-23 12:15:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2018-11-23 12:15:28,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 12:15:28,637 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 12:15:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:15:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 12:15:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 12:15:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 40 states and 61 transitions. [2018-11-23 12:15:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 61 transitions. [2018-11-23 12:15:29,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 12:15:29,173 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 12:15:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:15:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:15:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 12:15:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 40 states and 60 transitions. [2018-11-23 12:15:29,408 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 60 transitions. [2018-11-23 12:15:29,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 12:15:29,408 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 12:15:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:15:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:15:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 12:15:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 43 states and 67 transitions. [2018-11-23 12:15:29,803 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2018-11-23 12:15:29,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 12:15:29,804 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-23 12:15:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:15:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:15:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-23 12:15:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 27 transitions. [2018-11-23 12:15:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2018-11-23 12:15:30,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 12:15:30,020 WARN L424 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2018-11-23 12:15:30,027 INFO L775 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2018-11-23 12:15:30,069 INFO L579 CodeCheckObserver]: Invariant with dag size 1 [2018-11-23 12:15:30,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 12:15:30 ImpRootNode [2018-11-23 12:15:30,072 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-23 12:15:30,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 12:15:30,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 12:15:30,072 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 12:15:30,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:15:27" (3/4) ... [2018-11-23 12:15:30,081 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 12:15:30,087 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2018-11-23 12:15:30,092 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 12:15:30,092 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 12:15:30,132 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c7d67c42-5e4c-4330-b551-2f6f2e8a22a6/bin-2019/ukojak/witness.graphml [2018-11-23 12:15:30,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 12:15:30,133 INFO L168 Benchmark]: Toolchain (without parser) took 2842.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 960.3 MB in the beginning and 926.3 MB in the end (delta: 34.1 MB). Peak memory consumption was 168.8 MB. Max. memory is 11.5 GB. [2018-11-23 12:15:30,134 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:15:30,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.85 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:15:30,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.88 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:15:30,135 INFO L168 Benchmark]: Boogie Preprocessor took 10.16 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:15:30,136 INFO L168 Benchmark]: RCFGBuilder took 200.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 12:15:30,136 INFO L168 Benchmark]: CodeCheck took 2392.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.3 MB in the end (delta: 191.5 MB). Peak memory consumption was 191.5 MB. Max. memory is 11.5 GB. [2018-11-23 12:15:30,137 INFO L168 Benchmark]: Witness Printer took 60.73 ms. Allocated memory is still 1.2 GB. Free memory is still 926.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:15:30,139 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, 28 locations, 4 error locations. SAFE Result, 2.3s OverallTime, 9 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1212 SDtfs, 2348 SDslu, 0 SDs, 0 SdLazy, 12302 SolverSat, 2902 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 886 GetRequests, 769 SyntacticMatches, 31 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2537 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 3398 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 12/18 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 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 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.85 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 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 20.88 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.16 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * CodeCheck took 2392.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 926.3 MB in the end (delta: 191.5 MB). Peak memory consumption was 191.5 MB. Max. memory is 11.5 GB. * Witness Printer took 60.73 ms. Allocated memory is still 1.2 GB. Free memory is still 926.3 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...