./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/recursive/gcd02_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd02_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/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 32bit --witnessprinter.graph.data.programhash 4ba31a8852254650e4ff6b6614669c496c01110f ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 12:50:43,832 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:50:43,833 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:50:43,841 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:50:43,841 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:50:43,842 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:50:43,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:50:43,844 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:50:43,845 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:50:43,846 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:50:43,846 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:50:43,847 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:50:43,847 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:50:43,848 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:50:43,849 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:50:43,850 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:50:43,850 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:50:43,851 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:50:43,853 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:50:43,854 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:50:43,855 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:50:43,855 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:50:43,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:50:43,857 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:50:43,857 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:50:43,858 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:50:43,859 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:50:43,859 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:50:43,860 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:50:43,861 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:50:43,861 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:50:43,861 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:50:43,862 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:50:43,862 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:50:43,862 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:50:43,863 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:50:43,863 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf [2018-11-10 12:50:43,873 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:50:43,873 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:50:43,874 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:50:43,874 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:50:43,875 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:50:43,875 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:50:43,875 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:50:43,875 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 12:50:43,875 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 12:50:43,875 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:50:43,875 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 12:50:43,876 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:50:43,876 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:50:43,876 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:50:43,876 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:50:43,876 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 12:50:43,876 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 12:50:43,876 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:50:43,877 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:50:43,877 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 12:50:43,877 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 12:50:43,877 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:50:43,877 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:50:43,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 12:50:43,878 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:50:43,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:50:43,878 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:50:43,878 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 12:50:43,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:50:43,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:50:43,878 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_61deb267-304c-4b6a-965a-71e6bc194f62/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ba31a8852254650e4ff6b6614669c496c01110f [2018-11-10 12:50:43,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:50:43,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:50:43,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:50:43,909 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:50:43,909 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:50:43,910 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/../../sv-benchmarks/c/recursive/gcd02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-10 12:50:43,946 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/data/194e59e52/861242510b834bef8fcc6d9b8245b9ce/FLAGd07d73bb2 [2018-11-10 12:50:44,340 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:50:44,340 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/sv-benchmarks/c/recursive/gcd02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-10 12:50:44,344 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/data/194e59e52/861242510b834bef8fcc6d9b8245b9ce/FLAGd07d73bb2 [2018-11-10 12:50:44,353 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/data/194e59e52/861242510b834bef8fcc6d9b8245b9ce [2018-11-10 12:50:44,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:50:44,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 12:50:44,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:50:44,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:50:44,359 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:50:44,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeb45d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44, skipping insertion in model container [2018-11-10 12:50:44,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:50:44,377 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:50:44,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:50:44,472 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:50:44,482 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:50:44,490 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:50:44,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44 WrapperNode [2018-11-10 12:50:44,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:50:44,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 12:50:44,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 12:50:44,491 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 12:50:44,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 12:50:44,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:50:44,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:50:44,509 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:50:44,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:50:44,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:50:44,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:50:44,520 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:50:44,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:50:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/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 [2018-11-10 12:50:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2018-11-10 12:50:44,591 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2018-11-10 12:50:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:50:44,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:50:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-10 12:50:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-10 12:50:44,762 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:50:44,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:50:44 BoogieIcfgContainer [2018-11-10 12:50:44,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:50:44,763 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 12:50:44,763 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 12:50:44,771 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 12:50:44,771 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:50:44" (1/1) ... [2018-11-10 12:50:44,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:50:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 38 states and 47 transitions. [2018-11-10 12:50:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2018-11-10 12:50:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 12:50:44,818 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 42 states and 54 transitions. [2018-11-10 12:50:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2018-11-10 12:50:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 12:50:45,066 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 46 states and 62 transitions. [2018-11-10 12:50:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2018-11-10 12:50:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 12:50:45,365 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 45 states and 61 transitions. [2018-11-10 12:50:45,452 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2018-11-10 12:50:45,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 12:50:45,453 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:45,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 44 states and 60 transitions. [2018-11-10 12:50:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-11-10 12:50:45,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 12:50:45,537 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 52 states and 76 transitions. [2018-11-10 12:50:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 76 transitions. [2018-11-10 12:50:45,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 12:50:45,901 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 12:50:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 57 states and 87 transitions. [2018-11-10 12:50:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2018-11-10 12:50:46,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 12:50:46,343 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 57 states and 86 transitions. [2018-11-10 12:50:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 86 transitions. [2018-11-10 12:50:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 12:50:46,574 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 58 states and 86 transitions. [2018-11-10 12:50:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 86 transitions. [2018-11-10 12:50:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 12:50:46,763 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 42 states and 59 transitions. [2018-11-10 12:50:47,141 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2018-11-10 12:50:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 12:50:47,141 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:47,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 41 states and 58 transitions. [2018-11-10 12:50:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2018-11-10 12:50:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 12:50:47,264 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:50:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 49 states and 74 transitions. [2018-11-10 12:50:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 74 transitions. [2018-11-10 12:50:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 12:50:48,515 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 12:50:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 50 states and 74 transitions. [2018-11-10 12:50:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 74 transitions. [2018-11-10 12:50:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 12:50:48,646 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 12:50:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 43 states and 60 transitions. [2018-11-10 12:50:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2018-11-10 12:50:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 12:50:48,757 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 12:50:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:50:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 12:50:50,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 12:50:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 32 states and 41 transitions. [2018-11-10 12:50:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2018-11-10 12:50:50,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 12:50:50,464 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 15 iterations. [2018-11-10 12:50:50,471 INFO L778 CodeCheckObserver]: All specifications hold 6 specifications checked. All of them hold [2018-11-10 12:50:50,569 INFO L582 CodeCheckObserver]: Invariant with dag size 1 [2018-11-10 12:50:50,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 12:50:50 ImpRootNode [2018-11-10 12:50:50,571 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 12:50:50,572 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:50:50,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:50:50,572 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:50:50,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:50:44" (3/4) ... [2018-11-10 12:50:50,575 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 12:50:50,580 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure divides [2018-11-10 12:50:50,581 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2018-11-10 12:50:50,585 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-10 12:50:50,585 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-10 12:50:50,585 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 12:50:50,623 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_61deb267-304c-4b6a-965a-71e6bc194f62/bin-2019/ukojak/witness.graphml [2018-11-10 12:50:50,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:50:50,624 INFO L168 Benchmark]: Toolchain (without parser) took 6268.06 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 293.6 MB). Free memory was 960.2 MB in the beginning and 952.9 MB in the end (delta: 7.3 MB). Peak memory consumption was 300.9 MB. Max. memory is 11.5 GB. [2018-11-10 12:50:50,625 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:50:50,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 133.78 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:50:50,626 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.89 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:50:50,626 INFO L168 Benchmark]: Boogie Preprocessor took 10.96 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:50:50,626 INFO L168 Benchmark]: RCFGBuilder took 241.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -140.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2018-11-10 12:50:50,626 INFO L168 Benchmark]: CodeCheck took 5809.02 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 181.9 MB). Free memory was 1.1 GB in the beginning and 952.9 MB in the end (delta: 134.0 MB). Peak memory consumption was 315.9 MB. Max. memory is 11.5 GB. [2018-11-10 12:50:50,627 INFO L168 Benchmark]: Witness Printer took 51.36 ms. Allocated memory is still 1.3 GB. Free memory is still 952.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:50:50,629 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 3 procedures, 44 locations, 6 error locations. SAFE Result, 5.6s OverallTime, 15 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102220 SDtfs, 154166 SDslu, 18432 SDs, 0 SdLazy, 702294 SolverSat, 156132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2169 GetRequests, 1915 SyntacticMatches, 80 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11332 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 211 ConstructedInterpolants, 0 QuantifiedInterpolants, 11233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 21/40 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: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 133.78 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.89 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.96 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 241.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -140.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * CodeCheck took 5809.02 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 181.9 MB). Free memory was 1.1 GB in the beginning and 952.9 MB in the end (delta: 134.0 MB). Peak memory consumption was 315.9 MB. Max. memory is 11.5 GB. * Witness Printer took 51.36 ms. Allocated memory is still 1.3 GB. Free memory is still 952.9 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...