./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 ..................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:09:28,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:09:28,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:09:28,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:09:28,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:09:28,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:09:28,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:09:28,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:09:28,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:09:28,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:09:28,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:09:28,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:09:28,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:09:28,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:09:28,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:09:28,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:09:28,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:09:28,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:09:28,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:09:28,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:09:28,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:09:28,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:09:28,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:09:28,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:09:28,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:09:28,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:09:28,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:09:28,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:09:28,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:09:28,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:09:28,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:09:28,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:09:28,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:09:28,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:09:28,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:09:28,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:09:28,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:09:28,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:09:28,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:09:28,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:09:28,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:09:28,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-20 06:09:28,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:09:28,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:09:28,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:09:28,274 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:09:28,274 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:09:28,275 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:09:28,275 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:09:28,275 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:09:28,275 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:09:28,276 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:09:28,276 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:09:28,276 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:09:28,277 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:09:28,277 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:09:28,277 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:09:28,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:09:28,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:09:28,278 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 06:09:28,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:09:28,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:09:28,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:09:28,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:09:28,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:09:28,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:09:28,280 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-20 06:09:28,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:09:28,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:09:28,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:09:28,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:09:28,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:09:28,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:09:28,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:09:28,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:09:28,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:09:28,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:09:28,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:09:28,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:09:28,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:09:28,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:09:28,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:09:28,285 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 [2021-10-20 06:09:28,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:09:28,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:09:28,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:09:28,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:09:28,577 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:09:28,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/recursive/gcd01-1.c [2021-10-20 06:09:28,654 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/data/f1b672901/3dcd9bfcdbf541688f7d51c314d1ba58/FLAGa5e54cec4 [2021-10-20 06:09:29,161 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:09:29,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/sv-benchmarks/c/recursive/gcd01-1.c [2021-10-20 06:09:29,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/data/f1b672901/3dcd9bfcdbf541688f7d51c314d1ba58/FLAGa5e54cec4 [2021-10-20 06:09:29,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/data/f1b672901/3dcd9bfcdbf541688f7d51c314d1ba58 [2021-10-20 06:09:29,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:09:29,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:09:29,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:09:29,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:09:29,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:09:29,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b6b19e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29, skipping insertion in model container [2021-10-20 06:09:29,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:09:29,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:09:29,774 WARN L228 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_a902c24a-1387-4161-8e2c-dd4e6962bbbe/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-10-20 06:09:29,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:09:29,785 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:09:29,800 WARN L228 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_a902c24a-1387-4161-8e2c-dd4e6962bbbe/sv-benchmarks/c/recursive/gcd01-1.c[1008,1021] [2021-10-20 06:09:29,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:09:29,814 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:09:29,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29 WrapperNode [2021-10-20 06:09:29,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:09:29,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:09:29,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:09:29,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:09:29,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:09:29,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:09:29,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:09:29,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:09:29,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:09:29,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:09:29,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:09:29,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:09:29,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (1/1) ... [2021-10-20 06:09:29,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:09:29,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:09:29,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:09:29,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:09:29,969 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2021-10-20 06:09:29,970 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2021-10-20 06:09:29,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:09:29,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:09:29,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:09:29,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:09:30,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:09:30,358 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-20 06:09:30,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:09:30 BoogieIcfgContainer [2021-10-20 06:09:30,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:09:30,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:09:30,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:09:30,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:09:30,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:09:29" (1/3) ... [2021-10-20 06:09:30,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2d877e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:09:30, skipping insertion in model container [2021-10-20 06:09:30,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:09:29" (2/3) ... [2021-10-20 06:09:30,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2d877e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:09:30, skipping insertion in model container [2021-10-20 06:09:30,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:09:30" (3/3) ... [2021-10-20 06:09:30,380 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2021-10-20 06:09:30,386 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:09:30,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-20 06:09:30,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:09:30,447 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 06:09:30,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-20 06:09:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.5625) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-20 06:09:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 06:09:30,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:09:30,470 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:09:30,470 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-20 06:09:30,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:09:30,476 INFO L82 PathProgramCache]: Analyzing trace with hash 668641196, now seen corresponding path program 1 times [2021-10-20 06:09:30,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:09:30,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060299044] [2021-10-20 06:09:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:09:30,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:09:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:09:30,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:09:30,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:09:30,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060299044] [2021-10-20 06:09:30,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060299044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:09:30,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:09:30,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-20 06:09:30,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182382751] [2021-10-20 06:09:30,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 06:09:30,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:09:30,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 06:09:30,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:09:30,812 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.5625) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:09:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:09:30,992 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-10-20 06:09:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 06:09:30,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 06:09:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:09:31,002 INFO L225 Difference]: With dead ends: 29 [2021-10-20 06:09:31,003 INFO L226 Difference]: Without dead ends: 16 [2021-10-20 06:09:31,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:09:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-20 06:09:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-20 06:09:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:09:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-20 06:09:31,043 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2021-10-20 06:09:31,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:09:31,044 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-20 06:09:31,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:09:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-20 06:09:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 06:09:31,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:09:31,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:09:31,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:09:31,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-20 06:09:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:09:31,048 INFO L82 PathProgramCache]: Analyzing trace with hash 668640972, now seen corresponding path program 1 times [2021-10-20 06:09:31,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:09:31,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946528068] [2021-10-20 06:09:31,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:09:31,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:09:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:09:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:09:31,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:09:31,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946528068] [2021-10-20 06:09:31,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946528068] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:09:31,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:09:31,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 06:09:31,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119152731] [2021-10-20 06:09:31,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 06:09:31,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:09:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 06:09:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-20 06:09:31,143 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:09:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:09:31,224 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-20 06:09:31,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 06:09:31,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 06:09:31,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:09:31,226 INFO L225 Difference]: With dead ends: 16 [2021-10-20 06:09:31,227 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:09:31,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:09:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:09:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:09:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:09:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:09:31,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-20 06:09:31,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:09:31,233 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:09:31,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:09:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:09:31,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:09:31,237 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:09:31,238 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:09:31,239 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:09:31,240 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:09:31,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 06:09:31,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 06:09:31,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:09:31,411 INFO L857 garLoopResultBuilder]: For program point gcdFINAL(lines 17 28) no Hoare annotation was computed. [2021-10-20 06:09:31,411 INFO L857 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-10-20 06:09:31,412 INFO L857 garLoopResultBuilder]: For program point gcdEXIT(lines 17 28) no Hoare annotation was computed. [2021-10-20 06:09:31,412 INFO L857 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-10-20 06:09:31,412 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-20 06:09:31,413 INFO L857 garLoopResultBuilder]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-20 06:09:31,414 INFO L853 garLoopResultBuilder]: At program point L27-2(line 27) the Hoare annotation is: (or (not (<= |gcd_#in~y2| 2147483647)) (and (<= gcd_~y2 (+ gcd_~y1 2147483646)) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (<= gcd_~y2 2147483647) (<= gcd_~y1 2147483647)) (not (<= |gcd_#in~y1| 2147483647))) [2021-10-20 06:09:31,414 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 26) no Hoare annotation was computed. [2021-10-20 06:09:31,414 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-20 06:09:31,415 INFO L857 garLoopResultBuilder]: For program point L27-3(line 27) no Hoare annotation was computed. [2021-10-20 06:09:31,415 INFO L860 garLoopResultBuilder]: At program point gcdENTRY(lines 17 28) the Hoare annotation is: true [2021-10-20 06:09:31,416 INFO L853 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (or (not (<= |gcd_#in~y2| 2147483647)) (and (<= gcd_~y2 (+ gcd_~y1 2147483646)) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (<= gcd_~y2 2147483647) (<= gcd_~y1 2147483647)) (not (<= |gcd_#in~y1| 2147483647))) [2021-10-20 06:09:31,416 INFO L857 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2021-10-20 06:09:31,417 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 23) no Hoare annotation was computed. [2021-10-20 06:09:31,417 INFO L857 garLoopResultBuilder]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2021-10-20 06:09:31,417 INFO L857 garLoopResultBuilder]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2021-10-20 06:09:31,417 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-20 06:09:31,418 INFO L857 garLoopResultBuilder]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-20 06:09:31,418 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 06:09:31,418 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 34) no Hoare annotation was computed. [2021-10-20 06:09:31,418 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 06:09:31,419 INFO L860 garLoopResultBuilder]: At program point L43(lines 30 45) the Hoare annotation is: true [2021-10-20 06:09:31,420 INFO L853 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2021-10-20 06:09:31,420 INFO L857 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2021-10-20 06:09:31,420 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-10-20 06:09:31,425 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:09:31,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:09:31 BoogieIcfgContainer [2021-10-20 06:09:31,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:09:31,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:09:31,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:09:31,436 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:09:31,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:09:30" (3/4) ... [2021-10-20 06:09:31,440 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:09:31,446 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2021-10-20 06:09:31,454 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-20 06:09:31,454 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-20 06:09:31,455 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:09:31,455 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:09:31,513 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:09:31,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:09:31,515 INFO L168 Benchmark]: Toolchain (without parser) took 1968.13 ms. Allocated memory was 102.8 MB in the beginning and 146.8 MB in the end (delta: 44.0 MB). Free memory was 69.8 MB in the beginning and 98.7 MB in the end (delta: -28.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:09:31,516 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:09:31,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.16 ms. Allocated memory is still 102.8 MB. Free memory was 69.8 MB in the beginning and 77.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:09:31,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 102.8 MB. Free memory was 77.4 MB in the beginning and 76.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:09:31,518 INFO L168 Benchmark]: Boogie Preprocessor took 21.63 ms. Allocated memory is still 102.8 MB. Free memory was 76.0 MB in the beginning and 74.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:09:31,518 INFO L168 Benchmark]: RCFGBuilder took 488.23 ms. Allocated memory is still 102.8 MB. Free memory was 74.9 MB in the beginning and 63.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:09:31,519 INFO L168 Benchmark]: TraceAbstraction took 1070.47 ms. Allocated memory was 102.8 MB in the beginning and 146.8 MB in the end (delta: 44.0 MB). Free memory was 63.1 MB in the beginning and 101.5 MB in the end (delta: -38.5 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-20 06:09:31,520 INFO L168 Benchmark]: Witness Printer took 77.48 ms. Allocated memory is still 146.8 MB. Free memory was 101.5 MB in the beginning and 98.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:09:31,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.16 ms. Allocated memory is still 102.8 MB. Free memory was 69.8 MB in the beginning and 77.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 102.8 MB. Free memory was 77.4 MB in the beginning and 76.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.63 ms. Allocated memory is still 102.8 MB. Free memory was 76.0 MB in the beginning and 74.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 488.23 ms. Allocated memory is still 102.8 MB. Free memory was 74.9 MB in the beginning and 63.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1070.47 ms. Allocated memory was 102.8 MB in the beginning and 146.8 MB in the end (delta: 44.0 MB). Free memory was 63.1 MB in the beginning and 101.5 MB in the end (delta: -38.5 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Witness Printer took 77.48 ms. Allocated memory is still 146.8 MB. Free memory was 101.5 MB in the beginning and 98.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 986.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.1ms, AutomataDifference: 298.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 167.1ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 67 SDslu, 34 SDs, 0 SdLazy, 92 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 128.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 100.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 61 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 83.1ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 73.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.3ms SsaConstructionTime, 71.5ms SatisfiabilityAnalysisTime, 209.1ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-20 06:09:31,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a902c24a-1387-4161-8e2c-dd4e6962bbbe/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...