./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/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 d6f4e1dd3818e9d3e8c54653af66359ead501b84 .............................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:36:19,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:36:19,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:36:19,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:36:19,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:36:19,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:36:19,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:36:19,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:36:19,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:36:19,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:36:19,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:36:19,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:36:19,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:36:19,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:36:19,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:36:19,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:36:19,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:36:19,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:36:19,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:36:19,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:36:19,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:36:19,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:36:19,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:36:19,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:36:19,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:36:19,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:36:19,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:36:19,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:36:19,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:36:19,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:36:19,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:36:19,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:36:19,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:36:19,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:36:19,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:36:19,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:36:19,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:36:19,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:36:19,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:36:19,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:36:19,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:36:19,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf [2020-11-28 04:36:19,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:36:19,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:36:19,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:36:19,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:36:19,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:36:19,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:36:19,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:36:19,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:36:19,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:36:19,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:36:19,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:36:19,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:36:19,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:36:19,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:36:19,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:36:19,854 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 04:36:19,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:36:19,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:36:19,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:36:19,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:36:19,855 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:36:19,855 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:36:19,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:36:19,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:36:19,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:36:19,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:36:19,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:36:19,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:36:19,857 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:36:19,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:36:19,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:36:19,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6f4e1dd3818e9d3e8c54653af66359ead501b84 [2020-11-28 04:36:20,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:36:20,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:36:20,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:36:20,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:36:20,156 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:36:20,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/../../sv-benchmarks/c/recursive/gcd01-1.c [2020-11-28 04:36:20,246 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/data/94833b8eb/b1835cc3baa24c2397d4f5b7d12f481d/FLAGff9566e4a [2020-11-28 04:36:20,724 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:36:20,725 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/sv-benchmarks/c/recursive/gcd01-1.c [2020-11-28 04:36:20,739 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/data/94833b8eb/b1835cc3baa24c2397d4f5b7d12f481d/FLAGff9566e4a [2020-11-28 04:36:21,102 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/data/94833b8eb/b1835cc3baa24c2397d4f5b7d12f481d [2020-11-28 04:36:21,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:36:21,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:36:21,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:36:21,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:36:21,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:36:21,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513a8644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21, skipping insertion in model container [2020-11-28 04:36:21,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:36:21,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:36:21,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:36:21,343 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:36:21,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:36:21,389 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:36:21,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21 WrapperNode [2020-11-28 04:36:21,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:36:21,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:36:21,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:36:21,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:36:21,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:36:21,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:36:21,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:36:21,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:36:21,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... [2020-11-28 04:36:21,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:36:21,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:36:21,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:36:21,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:36:21,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:36:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-11-28 04:36:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-11-28 04:36:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:36:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:36:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:36:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:36:22,087 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:36:22,087 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 04:36:22,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:22 BoogieIcfgContainer [2020-11-28 04:36:22,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:36:22,091 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:36:22,091 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:36:22,102 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:36:22,102 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:22" (1/1) ... [2020-11-28 04:36:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:36:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2020-11-28 04:36:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-11-28 04:36:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:36:22,167 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 40 transitions. [2020-11-28 04:36:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-11-28 04:36:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:36:22,595 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:23,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 50 transitions. [2020-11-28 04:36:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-11-28 04:36:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:36:23,324 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 34 states and 49 transitions. [2020-11-28 04:36:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2020-11-28 04:36:23,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:36:23,590 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 33 states and 48 transitions. [2020-11-28 04:36:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2020-11-28 04:36:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 04:36:23,817 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 40 states and 62 transitions. [2020-11-28 04:36:24,707 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 62 transitions. [2020-11-28 04:36:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 04:36:24,708 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 42 states and 65 transitions. [2020-11-28 04:36:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 65 transitions. [2020-11-28 04:36:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 04:36:25,259 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 47 states and 74 transitions. [2020-11-28 04:36:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 74 transitions. [2020-11-28 04:36:25,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 04:36:25,861 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 27 transitions. [2020-11-28 04:36:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2020-11-28 04:36:26,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 04:36:26,370 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2020-11-28 04:36:26,377 INFO L765 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2020-11-28 04:36:26,460 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-28 04:36:26,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:36:26 ImpRootNode [2020-11-28 04:36:26,464 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:36:26,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:36:26,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:36:26,465 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:36:26,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:22" (3/4) ... [2020-11-28 04:36:26,468 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 04:36:26,474 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2020-11-28 04:36:26,480 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 04:36:26,481 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 04:36:26,481 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 04:36:26,481 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 04:36:26,545 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e7759834-0e82-434b-9c5f-01c38844bde3/bin/ukojak/witness.graphml [2020-11-28 04:36:26,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:36:26,548 INFO L168 Benchmark]: Toolchain (without parser) took 5440.09 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 79.6 MB in the beginning and 87.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:26,552 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 37.7 MB in the beginning and 37.7 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:36:26,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.91 ms. Allocated memory is still 109.1 MB. Free memory was 79.3 MB in the beginning and 85.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:26,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.51 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 84.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:36:26,554 INFO L168 Benchmark]: Boogie Preprocessor took 20.28 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 83.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:26,555 INFO L168 Benchmark]: RCFGBuilder took 638.65 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 66.5 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:26,556 INFO L168 Benchmark]: CodeCheck took 4372.57 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 66.5 MB in the beginning and 90.0 MB in the end (delta: -23.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:26,557 INFO L168 Benchmark]: Witness Printer took 81.14 ms. Allocated memory is still 159.4 MB. Free memory was 90.0 MB in the beginning and 87.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:26,560 INFO L339 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, 25 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1212 SDtfs, 2094 SDslu, 0 SDs, 0 SdLazy, 12100 SolverSat, 2886 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 911 GetRequests, 780 SyntacticMatches, 43 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2646 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 3998 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 10/18 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 27]: 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: 27]: 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: 30]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 37.7 MB in the beginning and 37.7 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.91 ms. Allocated memory is still 109.1 MB. Free memory was 79.3 MB in the beginning and 85.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.51 ms. Allocated memory is still 109.1 MB. Free memory was 85.7 MB in the beginning and 84.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.28 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 83.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 638.65 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 66.5 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * CodeCheck took 4372.57 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 66.5 MB in the beginning and 90.0 MB in the end (delta: -23.5 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * Witness Printer took 81.14 ms. Allocated memory is still 159.4 MB. Free memory was 90.0 MB in the beginning and 87.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...