./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Singapore-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Singapore-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 349847e180963dd684b7cc94b03057c94787ce1d172a2135d40cc21a06694c94 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:38:00,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:38:00,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:38:00,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:38:00,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:38:00,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:38:00,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:38:00,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:38:00,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:38:00,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:38:00,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:38:00,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:38:00,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:38:00,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:38:00,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:38:00,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:38:00,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:38:00,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:38:00,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:38:00,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:38:00,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:38:00,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:38:00,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:38:00,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:38:00,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:38:00,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:38:00,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:38:00,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:38:00,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:38:00,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:38:00,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:38:00,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:38:00,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:38:00,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:38:00,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:38:00,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:38:00,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:38:00,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:38:00,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:38:00,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:38:00,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:38:00,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-09 08:38:01,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:38:01,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:38:01,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:38:01,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:38:01,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:38:01,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:38:01,046 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:38:01,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:38:01,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:38:01,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:38:01,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:38:01,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:38:01,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:38:01,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:38:01,048 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-09 08:38:01,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:38:01,049 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:38:01,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:38:01,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:38:01,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:38:01,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:38:01,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:38:01,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:38:01,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:38:01,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:38:01,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:38:01,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:38:01,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:38:01,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:38:01,053 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_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 349847e180963dd684b7cc94b03057c94787ce1d172a2135d40cc21a06694c94 [2021-11-09 08:38:01,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:38:01,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:38:01,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:38:01,335 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:38:01,336 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:38:01,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/termination-crafted/Singapore-1.c [2021-11-09 08:38:01,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/data/9cd849728/2560b62ef21d41b1a9b889bf81c8af70/FLAGf623f4b85 [2021-11-09 08:38:01,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:38:01,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/sv-benchmarks/c/termination-crafted/Singapore-1.c [2021-11-09 08:38:01,866 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/data/9cd849728/2560b62ef21d41b1a9b889bf81c8af70/FLAGf623f4b85 [2021-11-09 08:38:02,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/data/9cd849728/2560b62ef21d41b1a9b889bf81c8af70 [2021-11-09 08:38:02,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:38:02,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:38:02,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:38:02,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:38:02,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:38:02,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b27667a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02, skipping insertion in model container [2021-11-09 08:38:02,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:38:02,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:38:02,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:38:02,506 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:38:02,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:38:02,534 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:38:02,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02 WrapperNode [2021-11-09 08:38:02,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:38:02,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:38:02,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:38:02,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:38:02,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:38:02,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:38:02,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:38:02,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:38:02,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:38:02,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:38:02,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:38:02,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:38:02,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (1/1) ... [2021-11-09 08:38:02,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:38:02,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:38:02,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:38:02,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:38:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:38:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:38:02,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:38:02,944 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-09 08:38:02,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:38:02 BoogieIcfgContainer [2021-11-09 08:38:02,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:38:02,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:38:02,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:38:02,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:38:02,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:38:02" (1/3) ... [2021-11-09 08:38:02,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55419206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:38:02, skipping insertion in model container [2021-11-09 08:38:02,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:38:02" (2/3) ... [2021-11-09 08:38:02,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55419206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:38:02, skipping insertion in model container [2021-11-09 08:38:02,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:38:02" (3/3) ... [2021-11-09 08:38:02,958 INFO L111 eAbstractionObserver]: Analyzing ICFG Singapore-1.c [2021-11-09 08:38:02,967 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:38:02,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-09 08:38:03,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:38:03,045 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 [2021-11-09 08:38:03,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-09 08:38:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-11-09 08:38:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-09 08:38:03,073 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:38:03,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-11-09 08:38:03,075 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-09 08:38:03,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:38:03,082 INFO L85 PathProgramCache]: Analyzing trace with hash 994, now seen corresponding path program 1 times [2021-11-09 08:38:03,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:38:03,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545081464] [2021-11-09 08:38:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:38:03,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:38:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:38:03,166 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:38:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:38:03,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:38:03,192 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 08:38:03,194 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 08:38:03,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 08:38:03,196 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 08:38:03,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 08:38:03,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 08:38:03,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 08:38:03,197 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 08:38:03,198 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 08:38:03,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:38:03,203 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-09 08:38:03,207 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:38:03,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:38:03 BoogieIcfgContainer [2021-11-09 08:38:03,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:38:03,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:38:03,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:38:03,220 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:38:03,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:38:02" (3/4) ... [2021-11-09 08:38:03,223 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-09 08:38:03,259 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:38:03,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:38:03,261 INFO L168 Benchmark]: Toolchain (without parser) took 982.25 ms. Allocated memory is still 111.1 MB. Free memory was 79.3 MB in the beginning and 63.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-11-09 08:38:03,262 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:38:03,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.63 ms. Allocated memory is still 111.1 MB. Free memory was 79.3 MB in the beginning and 88.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:38:03,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.00 ms. Allocated memory is still 111.1 MB. Free memory was 88.4 MB in the beginning and 87.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:38:03,264 INFO L168 Benchmark]: Boogie Preprocessor took 26.92 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 86.2 MB in the end (delta: 928.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:38:03,264 INFO L168 Benchmark]: RCFGBuilder took 339.52 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 77.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:38:03,265 INFO L168 Benchmark]: TraceAbstraction took 269.99 ms. Allocated memory is still 111.1 MB. Free memory was 77.5 MB in the beginning and 65.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:38:03,266 INFO L168 Benchmark]: Witness Printer took 39.60 ms. Allocated memory is still 111.1 MB. Free memory was 65.4 MB in the beginning and 63.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:38:03,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 39.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.63 ms. Allocated memory is still 111.1 MB. Free memory was 79.3 MB in the beginning and 88.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.00 ms. Allocated memory is still 111.1 MB. Free memory was 88.4 MB in the beginning and 87.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.92 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 86.2 MB in the end (delta: 928.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 339.52 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 77.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 269.99 ms. Allocated memory is still 111.1 MB. Free memory was 77.5 MB in the beginning and 65.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 39.60 ms. Allocated memory is still 111.1 MB. Free memory was 65.4 MB in the beginning and 63.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] x + y - UnprovableResult [Line: 16]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate proved your program to be incorrect! [2021-11-09 08:38:03,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ede462ba-d1aa-42e6-9123-290d316d23a2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)