./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/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_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/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 0.1.23-1dbac8b [2018-11-10 06:57:39,445 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 06:57:39,446 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 06:57:39,454 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 06:57:39,454 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 06:57:39,454 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 06:57:39,455 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 06:57:39,456 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 06:57:39,457 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 06:57:39,458 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 06:57:39,459 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 06:57:39,459 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 06:57:39,459 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 06:57:39,460 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 06:57:39,461 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 06:57:39,461 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 06:57:39,462 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 06:57:39,463 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 06:57:39,464 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 06:57:39,465 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 06:57:39,466 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 06:57:39,467 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 06:57:39,469 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 06:57:39,469 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 06:57:39,469 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 06:57:39,470 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 06:57:39,470 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 06:57:39,471 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 06:57:39,471 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 06:57:39,472 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 06:57:39,472 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 06:57:39,473 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 06:57:39,473 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 06:57:39,473 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 06:57:39,474 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 06:57:39,474 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 06:57:39,474 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2018-11-10 06:57:39,484 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 06:57:39,484 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 06:57:39,485 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 06:57:39,485 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 06:57:39,485 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 06:57:39,485 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 06:57:39,486 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 06:57:39,486 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 06:57:39,486 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 06:57:39,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 06:57:39,486 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 06:57:39,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 06:57:39,486 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 06:57:39,486 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 06:57:39,486 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 06:57:39,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 06:57:39,487 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 06:57:39,487 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 06:57:39,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 06:57:39,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 06:57:39,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 06:57:39,487 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 06:57:39,488 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 06:57:39,488 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 06:57:39,488 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 06:57:39,488 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 06:57:39,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 06:57:39,488 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_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/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 [2018-11-10 06:57:39,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 06:57:39,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 06:57:39,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 06:57:39,520 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 06:57:39,520 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 06:57:39,520 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/../../sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-11-10 06:57:39,555 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/data/74e925bd0/61dcb3e683484f0aa597bde0cacb531c/FLAG61eb59a55 [2018-11-10 06:57:39,952 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 06:57:39,952 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-11-10 06:57:39,956 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/data/74e925bd0/61dcb3e683484f0aa597bde0cacb531c/FLAG61eb59a55 [2018-11-10 06:57:39,967 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/data/74e925bd0/61dcb3e683484f0aa597bde0cacb531c [2018-11-10 06:57:39,970 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 06:57:39,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 06:57:39,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 06:57:39,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 06:57:39,975 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 06:57:39,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:57:39" (1/1) ... [2018-11-10 06:57:39,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e7f328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:39, skipping insertion in model container [2018-11-10 06:57:39,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:57:39" (1/1) ... [2018-11-10 06:57:39,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 06:57:39,999 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 06:57:40,105 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:57:40,108 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 06:57:40,119 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 06:57:40,127 INFO L193 MainTranslator]: Completed translation [2018-11-10 06:57:40,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40 WrapperNode [2018-11-10 06:57:40,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 06:57:40,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 06:57:40,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 06:57:40,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 06:57:40,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 06:57:40,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 06:57:40,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 06:57:40,152 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 06:57:40,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 06:57:40,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 06:57:40,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 06:57:40,163 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 06:57:40,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:57:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/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 06:57:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 06:57:40,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 06:57:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-10 06:57:40,241 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-10 06:57:40,358 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 06:57:40,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:57:40 BoogieIcfgContainer [2018-11-10 06:57:40,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 06:57:40,359 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 06:57:40,359 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 06:57:40,368 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 06:57:40,369 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:57:40" (1/1) ... [2018-11-10 06:57:40,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:57:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2018-11-10 06:57:40,402 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2018-11-10 06:57:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 06:57:40,407 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 06:57:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:40,537 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 06:57:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 40 transitions. [2018-11-10 06:57:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2018-11-10 06:57:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-10 06:57:40,706 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 06:57:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:40,788 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 06:57:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 50 transitions. [2018-11-10 06:57:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2018-11-10 06:57:41,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 06:57:41,072 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 06:57:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:41,104 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 06:57:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 34 states and 49 transitions. [2018-11-10 06:57:41,179 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2018-11-10 06:57:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 06:57:41,180 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 06:57:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:41,205 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 06:57:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 33 states and 48 transitions. [2018-11-10 06:57:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2018-11-10 06:57:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 06:57:41,246 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 06:57:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:41,336 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 06:57:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 38 states and 59 transitions. [2018-11-10 06:57:41,657 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 59 transitions. [2018-11-10 06:57:41,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 06:57:41,658 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 06:57:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:57:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 38 states and 58 transitions. [2018-11-10 06:57:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 58 transitions. [2018-11-10 06:57:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 06:57:41,836 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 06:57:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:57:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 38 states and 57 transitions. [2018-11-10 06:57:41,967 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 57 transitions. [2018-11-10 06:57:41,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 06:57:41,967 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 06:57:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:57:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 40 states and 61 transitions. [2018-11-10 06:57:42,138 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 61 transitions. [2018-11-10 06:57:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 06:57:42,138 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 06:57:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:57:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 06:57:42,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 06:57:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 27 transitions. [2018-11-10 06:57:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2018-11-10 06:57:42,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 06:57:42,409 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 10 iterations. [2018-11-10 06:57:42,417 INFO L778 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2018-11-10 06:57:42,452 INFO L582 CodeCheckObserver]: Invariant with dag size 1 [2018-11-10 06:57:42,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 06:57:42 ImpRootNode [2018-11-10 06:57:42,454 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 06:57:42,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 06:57:42,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 06:57:42,455 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 06:57:42,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 06:57:40" (3/4) ... [2018-11-10 06:57:42,457 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 06:57:42,461 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2018-11-10 06:57:42,465 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-10 06:57:42,465 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-10 06:57:42,465 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 06:57:42,503 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fd7fb9a1-c4f1-4d51-a17a-fe3e6f2be320/bin-2019/ukojak/witness.graphml [2018-11-10 06:57:42,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 06:57:42,504 INFO L168 Benchmark]: Toolchain (without parser) took 2533.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 960.3 MB in the beginning and 916.4 MB in the end (delta: 43.9 MB). Peak memory consumption was 170.8 MB. Max. memory is 11.5 GB. [2018-11-10 06:57:42,505 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-11-10 06:57:42,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.69 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 06:57:42,505 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.20 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:57:42,506 INFO L168 Benchmark]: Boogie Preprocessor took 10.98 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 06:57:42,506 INFO L168 Benchmark]: RCFGBuilder took 196.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 06:57:42,506 INFO L168 Benchmark]: CodeCheck took 2094.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 919.9 MB in the end (delta: 192.1 MB). Peak memory consumption was 192.1 MB. Max. memory is 11.5 GB. [2018-11-10 06:57:42,507 INFO L168 Benchmark]: Witness Printer took 48.93 ms. Allocated memory is still 1.2 GB. Free memory was 919.9 MB in the beginning and 916.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-10 06:57:42,509 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, 29 locations, 4 error locations. SAFE Result, 2.0s OverallTime, 10 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2676 SDtfs, 4592 SDslu, 512 SDs, 0 SdLazy, 22572 SolverSat, 5636 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1018 GetRequests, 894 SyntacticMatches, 38 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2455 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 4055 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 17/23 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: 25]: 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: 23]: 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 0.10 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 156.69 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 948.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.20 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.98 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 196.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -166.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * CodeCheck took 2094.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 919.9 MB in the end (delta: 192.1 MB). Peak memory consumption was 192.1 MB. Max. memory is 11.5 GB. * Witness Printer took 48.93 ms. Allocated memory is still 1.2 GB. Free memory was 919.9 MB in the beginning and 916.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...