./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_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/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 [2020-11-29 19:33:11,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:33:11,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:33:11,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:33:11,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:33:11,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:33:11,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:33:12,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:33:12,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:33:12,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:33:12,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:33:12,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:33:12,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:33:12,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:33:12,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:33:12,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:33:12,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:33:12,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:33:12,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:33:12,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:33:12,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:33:12,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:33:12,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:33:12,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:33:12,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:33:12,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:33:12,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:33:12,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:33:12,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:33:12,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:33:12,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:33:12,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:33:12,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:33:12,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:33:12,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:33:12,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:33:12,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:33:12,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:33:12,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:33:12,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:33:12,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:33:12,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/config/svcomp-Overflow-32bit-Kojak_Default.epf [2020-11-29 19:33:12,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:33:12,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:33:12,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-29 19:33:12,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-29 19:33:12,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:33:12,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:33:12,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:33:12,136 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:33:12,136 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:33:12,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:33:12,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:33:12,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:33:12,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:33:12,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:33:12,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:33:12,140 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 19:33:12,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:33:12,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:33:12,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:33:12,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:33:12,144 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 19:33:12,145 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 19:33:12,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:33:12,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:33:12,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 19:33:12,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:33:12,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:33:12,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:33:12,156 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 19:33:12,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:33:12,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:33:12,157 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_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6f4e1dd3818e9d3e8c54653af66359ead501b84 [2020-11-29 19:33:12,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:33:12,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:33:12,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:33:12,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:33:12,576 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:33:12,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/../../sv-benchmarks/c/recursive/gcd01-1.c [2020-11-29 19:33:12,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/data/b333ae0f0/28b9bb04299643deb51518ad618a0855/FLAGafe07b401 [2020-11-29 19:33:13,228 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:33:13,229 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/sv-benchmarks/c/recursive/gcd01-1.c [2020-11-29 19:33:13,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/data/b333ae0f0/28b9bb04299643deb51518ad618a0855/FLAGafe07b401 [2020-11-29 19:33:13,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/data/b333ae0f0/28b9bb04299643deb51518ad618a0855 [2020-11-29 19:33:13,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:33:13,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:33:13,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:33:13,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:33:13,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:33:13,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abc1d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13, skipping insertion in model container [2020-11-29 19:33:13,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:33:13,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:33:13,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:33:13,865 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:33:13,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:33:13,950 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:33:13,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13 WrapperNode [2020-11-29 19:33:13,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:33:13,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:33:13,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:33:13,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:33:13,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:13,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:14,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:33:14,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:33:14,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:33:14,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:33:14,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:14,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:14,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:14,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:14,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:14,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:14,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... [2020-11-29 19:33:14,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:33:14,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:33:14,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:33:14,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:33:14,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/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 [2020-11-29 19:33:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-11-29 19:33:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-11-29 19:33:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:33:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:33:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:33:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:33:14,631 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:33:14,631 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:33:14,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:14 BoogieIcfgContainer [2020-11-29 19:33:14,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:33:14,635 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 19:33:14,635 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 19:33:14,651 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 19:33:14,651 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:14" (1/1) ... [2020-11-29 19:33:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:33:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:14,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2020-11-29 19:33:14,715 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-11-29 19:33:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:33:14,721 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:33:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 40 transitions. [2020-11-29 19:33:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-11-29 19:33:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:33:15,290 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:33:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 50 transitions. [2020-11-29 19:33:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-11-29 19:33:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:33:16,401 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:33:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:16,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 34 states and 49 transitions. [2020-11-29 19:33:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2020-11-29 19:33:16,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:33:16,666 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:33:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:16,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 33 states and 48 transitions. [2020-11-29 19:33:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2020-11-29 19:33:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:33:16,908 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:33:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 38 states and 58 transitions. [2020-11-29 19:33:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 58 transitions. [2020-11-29 19:33:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:33:17,652 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:33:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 40 states and 62 transitions. [2020-11-29 19:33:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 62 transitions. [2020-11-29 19:33:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:33:18,136 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:33:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 42 states and 65 transitions. [2020-11-29 19:33:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 65 transitions. [2020-11-29 19:33:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:33:18,838 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:33:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 44 states and 69 transitions. [2020-11-29 19:33:19,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 69 transitions. [2020-11-29 19:33:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:33:19,286 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:33:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:33:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:33:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:33:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 27 transitions. [2020-11-29 19:33:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2020-11-29 19:33:19,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:33:19,977 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 10 iterations. [2020-11-29 19:33:19,986 INFO L765 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2020-11-29 19:33:20,083 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-29 19:33:20,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 07:33:20 ImpRootNode [2020-11-29 19:33:20,088 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 19:33:20,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:33:20,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:33:20,089 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:33:20,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:14" (3/4) ... [2020-11-29 19:33:20,094 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:33:20,100 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2020-11-29 19:33:20,110 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-29 19:33:20,110 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-29 19:33:20,110 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:33:20,111 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:33:20,183 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_72c4845a-8aa1-4989-ba51-2ce95bfa6bd0/bin/ukojak/witness.graphml [2020-11-29 19:33:20,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:33:20,186 INFO L168 Benchmark]: Toolchain (without parser) took 6570.48 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 49.9 MB in the beginning and 43.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:20,188 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 52.3 MB in the beginning and 52.3 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:33:20,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.10 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 49.7 MB in the beginning and 77.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:20,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.64 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:33:20,193 INFO L168 Benchmark]: Boogie Preprocessor took 41.82 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 75.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:20,193 INFO L168 Benchmark]: RCFGBuilder took 589.42 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 58.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:20,194 INFO L168 Benchmark]: CodeCheck took 5452.70 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 58.6 MB in the beginning and 45.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:20,195 INFO L168 Benchmark]: Witness Printer took 94.88 ms. Allocated memory is still 121.6 MB. Free memory was 45.9 MB in the beginning and 43.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:33:20,200 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: 5.2s, OverallIterations: 10, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2396 SDtfs, 4066 SDslu, 0 SDs, 0 SdLazy, 23674 SolverSat, 5668 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 904 SyntacticMatches, 57 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 4733 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 10/22 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 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 52.3 MB in the beginning and 52.3 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.10 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 49.7 MB in the beginning and 77.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.64 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.82 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 75.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 589.42 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 58.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * CodeCheck took 5452.70 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 58.6 MB in the beginning and 45.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * Witness Printer took 94.88 ms. Allocated memory is still 121.6 MB. Free memory was 45.9 MB in the beginning and 43.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...