./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ --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 ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:23:03,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:23:03,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:23:03,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:23:03,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:23:03,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:23:03,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:23:03,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:23:03,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:23:03,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:23:03,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:23:03,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:23:03,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:23:03,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:23:03,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:23:03,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:23:03,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:23:03,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:23:03,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:23:03,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:23:03,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:23:03,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:23:03,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:23:03,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:23:03,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:23:03,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:23:03,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:23:03,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:23:03,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:23:03,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:23:03,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:23:03,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:23:03,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:23:03,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:23:03,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:23:03,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:23:03,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:23:03,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:23:03,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:23:03,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:23:03,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:23:03,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/config/svcomp-Overflow-32bit-Kojak_Default.epf [2021-11-23 01:23:03,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:23:03,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:23:03,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:23:03,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 01:23:03,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:23:03,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:23:03,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:23:03,256 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:23:03,263 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:23:03,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:23:03,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:23:03,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:23:03,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:23:03,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:23:03,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:23:03,266 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 01:23:03,266 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:23:03,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:23:03,266 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:23:03,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:23:03,267 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:23:03,267 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:23:03,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:23:03,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:23:03,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:23:03,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:23:03,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:23:03,269 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:23:03,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:23:03,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:23:03,271 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_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 [2021-11-23 01:23:03,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:23:03,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:23:03,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:23:03,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:23:03,583 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:23:03,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/recursive/gcd01-1.c [2021-11-23 01:23:03,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/data/95485f225/4f209f6ebaea4a3c9a2ff2d9dbb343dd/FLAG1cf17d01f [2021-11-23 01:23:04,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:23:04,170 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/sv-benchmarks/c/recursive/gcd01-1.c [2021-11-23 01:23:04,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/data/95485f225/4f209f6ebaea4a3c9a2ff2d9dbb343dd/FLAG1cf17d01f [2021-11-23 01:23:04,660 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/data/95485f225/4f209f6ebaea4a3c9a2ff2d9dbb343dd [2021-11-23 01:23:04,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:23:04,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:23:04,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:23:04,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:23:04,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:23:04,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae823b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04, skipping insertion in model container [2021-11-23 01:23:04,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:23:04,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:23:04,874 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-11-23 01:23:04,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:23:04,886 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:23:04,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-11-23 01:23:04,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:23:04,925 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:23:04,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04 WrapperNode [2021-11-23 01:23:04,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:23:04,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:23:04,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:23:04,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:23:04,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,976 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2021-11-23 01:23:04,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:23:04,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:23:04,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:23:04,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:23:04,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:04,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:23:04,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:23:04,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:23:04,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:23:04,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:04" (1/1) ... [2021-11-23 01:23:05,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:23:05,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:23:05,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:23:05,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:23:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:23:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-11-23 01:23:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-11-23 01:23:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:23:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:23:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:23:05,144 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:23:05,145 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:23:05,267 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:23:05,302 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:23:05,302 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:23:05,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:23:05 BoogieIcfgContainer [2021-11-23 01:23:05,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:23:05,305 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:23:05,305 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:23:05,323 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:23:05,323 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:23:05" (1/1) ... [2021-11-23 01:23:05,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:23:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:23:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2021-11-23 01:23:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-11-23 01:23:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 01:23:05,398 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:23:05,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:23:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:23:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:23:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:23:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 40 transitions. [2021-11-23 01:23:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-11-23 01:23:05,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 01:23:05,769 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:23:05,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:23:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:23:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:23:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:23:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 50 transitions. [2021-11-23 01:23:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2021-11-23 01:23:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 01:23:06,410 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:23:06,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:23:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:23:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:23:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:23:06,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 34 states and 49 transitions. [2021-11-23 01:23:06,555 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2021-11-23 01:23:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 01:23:06,556 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:23:06,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:23:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:23:06,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:23:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:23:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 33 states and 48 transitions. [2021-11-23 01:23:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2021-11-23 01:23:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 01:23:06,665 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:23:06,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:23:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:23:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:23:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:23:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 35 states and 52 transitions. [2021-11-23 01:23:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2021-11-23 01:23:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 01:23:06,945 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:23:06,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:23:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:23:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:23:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:23:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 40 states and 60 transitions. [2021-11-23 01:23:07,381 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 60 transitions. [2021-11-23 01:23:07,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 01:23:07,382 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:23:07,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:23:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:23:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:23:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:23:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 42 states and 64 transitions. [2021-11-23 01:23:07,644 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 64 transitions. [2021-11-23 01:23:07,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 01:23:07,645 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:23:07,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:23:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:23:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:23:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:23:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 27 transitions. [2021-11-23 01:23:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2021-11-23 01:23:08,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 01:23:08,132 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2021-11-23 01:23:08,148 INFO L754 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2021-11-23 01:23:08,220 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-23 01:23:08,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:23:08 ImpRootNode [2021-11-23 01:23:08,225 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:23:08,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:23:08,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:23:08,227 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:23:08,227 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:23:05" (3/4) ... [2021-11-23 01:23:08,230 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 01:23:08,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2021-11-23 01:23:08,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-23 01:23:08,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-23 01:23:08,246 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 01:23:08,246 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:23:08,316 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:23:08,327 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:23:08,328 INFO L158 Benchmark]: Toolchain (without parser) took 3663.28ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 67.1MB in the beginning and 83.7MB in the end (delta: -16.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 01:23:08,328 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 98.6MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:23:08,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.08ms. Allocated memory is still 98.6MB. Free memory was 67.1MB in the beginning and 76.4MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:23:08,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.85ms. Allocated memory is still 98.6MB. Free memory was 76.4MB in the beginning and 75.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:23:08,333 INFO L158 Benchmark]: Boogie Preprocessor took 18.91ms. Allocated memory is still 98.6MB. Free memory was 75.1MB in the beginning and 74.2MB in the end (delta: 855.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:23:08,333 INFO L158 Benchmark]: RCFGBuilder took 307.78ms. Allocated memory is still 98.6MB. Free memory was 73.8MB in the beginning and 63.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 01:23:08,334 INFO L158 Benchmark]: CodeCheck took 2919.70ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 63.5MB in the beginning and 86.7MB in the end (delta: -23.2MB). Peak memory consumption was 576.9kB. Max. memory is 16.1GB. [2021-11-23 01:23:08,335 INFO L158 Benchmark]: Witness Printer took 101.50ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 83.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:23:08,337 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. OverallTime: 2.8s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 259 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 186 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 885 IncrementalHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 186 mSolverCounterUnsat, 82 mSDtfsCounter, 885 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 897 GetRequests, 780 SyntacticMatches, 45 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 304 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: 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: 27]: 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 - 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 0.29ms. Allocated memory is still 98.6MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.08ms. Allocated memory is still 98.6MB. Free memory was 67.1MB in the beginning and 76.4MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.85ms. Allocated memory is still 98.6MB. Free memory was 76.4MB in the beginning and 75.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.91ms. Allocated memory is still 98.6MB. Free memory was 75.1MB in the beginning and 74.2MB in the end (delta: 855.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 307.78ms. Allocated memory is still 98.6MB. Free memory was 73.8MB in the beginning and 63.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 2919.70ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 63.5MB in the beginning and 86.7MB in the end (delta: -23.2MB). Peak memory consumption was 576.9kB. Max. memory is 16.1GB. * Witness Printer took 101.50ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 83.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-23 01:23:08,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48f52eda-82b3-4a81-b9e6-2689d4c2ba0a/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE