./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN --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-53f42b1 [2021-11-21 04:40:41,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 04:40:41,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 04:40:41,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 04:40:41,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 04:40:41,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 04:40:41,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 04:40:41,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 04:40:41,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 04:40:41,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 04:40:41,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 04:40:41,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 04:40:41,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 04:40:41,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 04:40:41,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 04:40:42,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 04:40:42,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 04:40:42,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 04:40:42,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 04:40:42,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 04:40:42,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 04:40:42,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 04:40:42,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 04:40:42,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 04:40:42,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 04:40:42,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 04:40:42,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 04:40:42,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 04:40:42,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 04:40:42,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 04:40:42,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 04:40:42,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 04:40:42,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 04:40:42,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 04:40:42,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 04:40:42,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 04:40:42,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 04:40:42,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 04:40:42,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 04:40:42,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 04:40:42,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 04:40:42,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/config/svcomp-Overflow-32bit-Kojak_Default.epf [2021-11-21 04:40:42,127 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 04:40:42,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 04:40:42,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 04:40:42,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-21 04:40:42,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 04:40:42,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 04:40:42,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 04:40:42,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 04:40:42,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 04:40:42,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 04:40:42,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 04:40:42,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 04:40:42,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 04:40:42,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 04:40:42,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 04:40:42,146 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 04:40:42,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 04:40:42,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 04:40:42,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 04:40:42,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 04:40:42,147 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-21 04:40:42,147 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-21 04:40:42,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 04:40:42,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 04:40:42,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 04:40:42,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 04:40:42,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 04:40:42,148 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-21 04:40:42,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 04:40:42,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 04:40:42,149 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_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 [2021-11-21 04:40:42,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 04:40:42,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 04:40:42,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 04:40:42,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 04:40:42,575 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 04:40:42,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/../../sv-benchmarks/c/recursive/gcd01-1.c [2021-11-21 04:40:42,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/data/d81524a30/a19a1058551b43a8a754afd23a634276/FLAGc0fa7e050 [2021-11-21 04:40:43,176 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 04:40:43,177 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/sv-benchmarks/c/recursive/gcd01-1.c [2021-11-21 04:40:43,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/data/d81524a30/a19a1058551b43a8a754afd23a634276/FLAGc0fa7e050 [2021-11-21 04:40:43,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/data/d81524a30/a19a1058551b43a8a754afd23a634276 [2021-11-21 04:40:43,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 04:40:43,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 04:40:43,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 04:40:43,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 04:40:43,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 04:40:43,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dedd8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43, skipping insertion in model container [2021-11-21 04:40:43,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 04:40:43,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 04:40:43,802 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_0df5b2a6-b363-44ab-b279-289c79683b79/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-11-21 04:40:43,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 04:40:43,815 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 04:40:43,835 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_0df5b2a6-b363-44ab-b279-289c79683b79/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-11-21 04:40:43,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 04:40:43,851 INFO L208 MainTranslator]: Completed translation [2021-11-21 04:40:43,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43 WrapperNode [2021-11-21 04:40:43,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 04:40:43,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 04:40:43,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 04:40:43,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 04:40:43,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,889 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2021-11-21 04:40:43,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 04:40:43,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 04:40:43,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 04:40:43,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 04:40:43,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 04:40:43,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 04:40:43,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 04:40:43,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 04:40:43,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:40:43" (1/1) ... [2021-11-21 04:40:43,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 04:40:43,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/z3 [2021-11-21 04:40:43,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-21 04:40:43,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-21 04:40:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 04:40:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-11-21 04:40:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-11-21 04:40:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 04:40:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 04:40:44,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 04:40:44,097 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 04:40:44,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 04:40:44,318 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 04:40:44,338 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 04:40:44,338 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 04:40:44,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:40:44 BoogieIcfgContainer [2021-11-21 04:40:44,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 04:40:44,342 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-21 04:40:44,342 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-21 04:40:44,353 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-21 04:40:44,353 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:40:44" (1/1) ... [2021-11-21 04:40:44,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 04:40:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:40:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2021-11-21 04:40:44,431 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-11-21 04:40:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 04:40:44,437 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:40:44,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:40:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:40:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:40:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:40:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 40 transitions. [2021-11-21 04:40:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-11-21 04:40:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 04:40:44,899 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:40:44,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:40:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:40:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:40:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:40:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 50 transitions. [2021-11-21 04:40:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2021-11-21 04:40:45,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 04:40:45,668 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:40:45,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:40:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:40:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:40:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:40:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 34 states and 49 transitions. [2021-11-21 04:40:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2021-11-21 04:40:45,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 04:40:45,920 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:40:45,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:40:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:40:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:40:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:40:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 33 states and 48 transitions. [2021-11-21 04:40:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 48 transitions. [2021-11-21 04:40:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 04:40:46,086 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:40:46,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:40:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:40:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:40:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:40:46,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 35 states and 52 transitions. [2021-11-21 04:40:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 52 transitions. [2021-11-21 04:40:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 04:40:46,524 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:40:46,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:40:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:40:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:40:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:40:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 40 states and 60 transitions. [2021-11-21 04:40:47,061 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 60 transitions. [2021-11-21 04:40:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 04:40:47,063 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:40:47,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:40:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:40:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:40:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:40:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 44 states and 68 transitions. [2021-11-21 04:40:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 68 transitions. [2021-11-21 04:40:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 04:40:47,714 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:40:47,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:40:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:40:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:40:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:40:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 27 transitions. [2021-11-21 04:40:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2021-11-21 04:40:48,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 04:40:48,284 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2021-11-21 04:40:48,295 INFO L754 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2021-11-21 04:40:48,356 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-21 04:40:48,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 04:40:48 ImpRootNode [2021-11-21 04:40:48,362 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-21 04:40:48,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 04:40:48,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 04:40:48,363 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 04:40:48,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:40:44" (3/4) ... [2021-11-21 04:40:48,369 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 04:40:48,377 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2021-11-21 04:40:48,389 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-21 04:40:48,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-21 04:40:48,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-21 04:40:48,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 04:40:48,478 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/witness.graphml [2021-11-21 04:40:48,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 04:40:48,479 INFO L158 Benchmark]: Toolchain (without parser) took 4923.03ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 57.7MB in the beginning and 65.8MB in the end (delta: -8.1MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-11-21 04:40:48,480 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 92.3MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 04:40:48,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.93ms. Allocated memory is still 92.3MB. Free memory was 57.5MB in the beginning and 68.3MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 04:40:48,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.14ms. Allocated memory is still 92.3MB. Free memory was 68.3MB in the beginning and 66.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 04:40:48,481 INFO L158 Benchmark]: Boogie Preprocessor took 21.50ms. Allocated memory is still 92.3MB. Free memory was 66.9MB in the beginning and 65.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 04:40:48,482 INFO L158 Benchmark]: RCFGBuilder took 427.80ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 55.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 04:40:48,483 INFO L158 Benchmark]: CodeCheck took 4020.77ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 55.4MB in the beginning and 68.8MB in the end (delta: -13.5MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2021-11-21 04:40:48,483 INFO L158 Benchmark]: Witness Printer took 115.55ms. Allocated memory is still 117.4MB. Free memory was 68.8MB in the beginning and 65.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 04:40:48,487 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: 3.9s, 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, 261 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 195 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 196 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 917 IncrementalHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 196 mSolverCounterUnsat, 82 mSDtfsCounter, 917 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 901 GetRequests, 778 SyntacticMatches, 43 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1975 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s 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 0.25ms. Allocated memory is still 92.3MB. Free memory was 65.5MB in the beginning and 65.4MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.93ms. Allocated memory is still 92.3MB. Free memory was 57.5MB in the beginning and 68.3MB in the end (delta: -10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.14ms. Allocated memory is still 92.3MB. Free memory was 68.3MB in the beginning and 66.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.50ms. Allocated memory is still 92.3MB. Free memory was 66.9MB in the beginning and 65.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 427.80ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 55.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 4020.77ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 55.4MB in the beginning and 68.8MB in the end (delta: -13.5MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * Witness Printer took 115.55ms. Allocated memory is still 117.4MB. Free memory was 68.8MB in the beginning and 65.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-21 04:40:48,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0df5b2a6-b363-44ab-b279-289c79683b79/bin/ukojak-vF6T2TMglN/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