./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c62b8cd14983fa4dda29102c5113315628115eea4aa89f3549fa0abedadf594b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:20:22,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:20:22,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:20:22,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:20:22,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:20:22,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:20:22,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:20:22,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:20:22,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:20:22,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:20:22,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:20:22,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:20:22,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:20:22,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:20:22,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:20:22,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:20:22,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:20:22,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:20:22,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:20:22,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:20:22,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:20:22,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:20:22,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:20:22,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:20:22,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:20:22,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:20:22,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:20:22,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:20:22,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:20:22,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:20:22,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:20:22,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:20:22,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:20:22,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:20:22,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:20:22,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:20:22,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:20:22,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:20:22,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:20:22,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:20:22,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:20:22,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 07:20:22,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:20:22,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:20:22,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:20:22,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:20:22,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:20:22,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:20:22,669 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:20:22,669 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 07:20:22,669 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 07:20:22,669 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 07:20:22,671 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 07:20:22,671 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 07:20:22,671 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 07:20:22,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:20:22,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:20:22,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:20:22,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:20:22,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 07:20:22,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 07:20:22,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 07:20:22,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:20:22,673 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 07:20:22,674 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:20:22,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 07:20:22,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:20:22,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:20:22,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:20:22,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:20:22,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:20:22,679 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 07:20:22,679 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c62b8cd14983fa4dda29102c5113315628115eea4aa89f3549fa0abedadf594b [2021-11-20 07:20:23,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:20:23,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:20:23,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:20:23,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:20:23,043 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:20:23,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2021-11-20 07:20:23,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/data/0542131d0/cb12638e8c95437d950ddb752b3df7f1/FLAG1e6a99a85 [2021-11-20 07:20:23,642 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:20:23,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2021-11-20 07:20:23,654 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/data/0542131d0/cb12638e8c95437d950ddb752b3df7f1/FLAG1e6a99a85 [2021-11-20 07:20:24,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/data/0542131d0/cb12638e8c95437d950ddb752b3df7f1 [2021-11-20 07:20:24,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:20:24,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:20:24,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:20:24,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:20:24,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:20:24,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a81344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24, skipping insertion in model container [2021-11-20 07:20:24,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:20:24,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:20:24,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:20:24,230 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:20:24,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:20:24,256 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:20:24,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24 WrapperNode [2021-11-20 07:20:24,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:20:24,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:20:24,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:20:24,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:20:24,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,288 INFO L137 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2021-11-20 07:20:24,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:20:24,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:20:24,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:20:24,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:20:24,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:20:24,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:20:24,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:20:24,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:20:24,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (1/1) ... [2021-11-20 07:20:24,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:20:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:24,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:20:24,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 07:20:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-20 07:20:24,395 INFO L138 BoogieDeclarations]: Found implementation of procedure bsearch [2021-11-20 07:20:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:20:24,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:20:24,457 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:20:24,458 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:20:24,615 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:20:24,622 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:20:24,624 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:20:24,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:20:24 BoogieIcfgContainer [2021-11-20 07:20:24,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:20:24,628 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 07:20:24,628 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 07:20:24,632 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 07:20:24,633 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:20:24,633 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 07:20:24" (1/3) ... [2021-11-20 07:20:24,635 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@455d767f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:20:24, skipping insertion in model container [2021-11-20 07:20:24,635 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:20:24,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:20:24" (2/3) ... [2021-11-20 07:20:24,636 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@455d767f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:20:24, skipping insertion in model container [2021-11-20 07:20:24,636 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:20:24,636 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:20:24" (3/3) ... [2021-11-20 07:20:24,638 INFO L388 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2021-11-20 07:20:24,697 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 07:20:24,698 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 07:20:24,698 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 07:20:24,698 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 07:20:24,698 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 07:20:24,698 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 07:20:24,699 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 07:20:24,699 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 07:20:24,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-11-20 07:20:24,750 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-11-20 07:20:24,750 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:20:24,751 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:20:24,759 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-20 07:20:24,760 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 07:20:24,760 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 07:20:24,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-11-20 07:20:24,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-11-20 07:20:24,765 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:20:24,766 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:20:24,766 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-20 07:20:24,766 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 07:20:24,774 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 11#L22true assume !!(-1073741823 <= main_~x~0#1 && main_~x~0#1 <= 1073741823); 16#L23true assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823); 19#L24true call main_#t~ret5#1 := bsearch(main_~x~0#1, main_~y~0#1);< 6#bsearchENTRYtrue [2021-11-20 07:20:24,775 INFO L793 eck$LassoCheckResult]: Loop: 6#bsearchENTRYtrue ~i := #in~i;~j := #in~j; 17#L10true assume !(~i >= ~j);~mid~0 := (if ~i + ~j < 0 && 0 != (~i + ~j) % 2 then 1 + (~i + ~j) / 2 else (~i + ~j) / 2); 18#L12true assume !(0 != #t~nondet0);havoc #t~nondet0; 5#L14true call #t~ret2 := bsearch(1 + ~mid~0, ~j);< 6#bsearchENTRYtrue [2021-11-20 07:20:24,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2021-11-20 07:20:24,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:24,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722917516] [2021-11-20 07:20:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:24,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:24,889 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:20:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:24,937 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:20:24,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:24,941 INFO L85 PathProgramCache]: Analyzing trace with hash 927709, now seen corresponding path program 1 times [2021-11-20 07:20:24,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:24,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528925586] [2021-11-20 07:20:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:24,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:24,979 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:20:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:25,008 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:20:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash 324439064, now seen corresponding path program 1 times [2021-11-20 07:20:25,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:25,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762551377] [2021-11-20 07:20:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:25,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:25,047 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:20:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:25,067 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:20:25,496 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:20:25,496 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:20:25,497 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:20:25,497 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:20:25,497 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:20:25,497 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:20:25,497 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:20:25,498 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:20:25,498 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binary_Search-2.c_Iteration1_Loop [2021-11-20 07:20:25,498 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:20:25,498 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:20:25,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:25,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:25,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:25,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:25,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:25,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:25,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:25,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:26,006 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:20:26,007 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:20:26,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:20:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:26,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:20:26,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:20:26,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:20:26,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 07:20:26,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-11-20 07:20:26,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:20:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:26,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:20:26,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:20:26,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:20:26,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 07:20:31,003 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:20:31,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-11-20 07:20:31,007 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:20:31,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:20:31,008 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:20:31,008 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:20:31,008 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:20:31,008 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:20:31,008 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:20:31,008 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:20:31,008 INFO L133 ssoRankerPreferences]: Filename of dumped script: Binary_Search-2.c_Iteration1_Loop [2021-11-20 07:20:31,009 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:20:31,009 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:20:31,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:31,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:31,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:31,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:31,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:31,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:31,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:31,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:20:31,387 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:20:31,391 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:20:31,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:20:31,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:31,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:20:31,399 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:20:31,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:20:31,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:20:31,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:20:31,410 INFO L204 nArgumentSynthesizer]: 3 loop disjuncts [2021-11-20 07:20:31,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:20:31,418 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 07:20:31,419 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:20:31,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 07:20:31,438 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:20:31,460 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-20 07:20:31,460 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 07:20:31,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:20:31,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:31,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:20:31,484 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:20:31,484 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:20:31,485 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:20:31,485 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(bsearch_#in~j, bsearch_#in~i) = 1*bsearch_#in~j - 1*bsearch_#in~i Supporting invariants [] [2021-11-20 07:20:31,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 07:20:31,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-11-20 07:20:31,523 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:20:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:31,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:20:31,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:20:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:31,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 07:20:31,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:20:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:20:32,102 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-20 07:20:32,104 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:20:32,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:20:32,274 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 47 states and 60 transitions. Complement of second has 12 states. [2021-11-20 07:20:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-20 07:20:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:20:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-11-20 07:20:32,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2021-11-20 07:20:32,288 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:20:32,288 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2021-11-20 07:20:32,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:20:32,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2021-11-20 07:20:32,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:20:32,290 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 60 transitions. [2021-11-20 07:20:32,302 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-11-20 07:20:32,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 24 states and 27 transitions. [2021-11-20 07:20:32,310 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-20 07:20:32,310 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-20 07:20:32,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 27 transitions. [2021-11-20 07:20:32,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:20:32,311 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-20 07:20:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 27 transitions. [2021-11-20 07:20:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2021-11-20 07:20:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:20:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-20 07:20:32,343 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-20 07:20:32,343 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-20 07:20:32,343 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 07:20:32,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2021-11-20 07:20:32,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-11-20 07:20:32,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:20:32,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:20:32,346 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:32,346 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 07:20:32,347 INFO L791 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 130#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 127#L22 assume !!(-1073741823 <= main_~x~0#1 && main_~x~0#1 <= 1073741823); 128#L23 assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823); 136#L24 call main_#t~ret5#1 := bsearch(main_~x~0#1, main_~y~0#1);< 137#bsearchENTRY ~i := #in~i;~j := #in~j; 139#L10 assume !(~i >= ~j);~mid~0 := (if ~i + ~j < 0 && 0 != (~i + ~j) % 2 then 1 + (~i + ~j) / 2 else (~i + ~j) / 2); 140#L12 assume 0 != #t~nondet0;havoc #t~nondet0; 132#L13 [2021-11-20 07:20:32,347 INFO L793 eck$LassoCheckResult]: Loop: 132#L13 call #t~ret1 := bsearch(~i, ~mid~0);< 133#bsearchENTRY ~i := #in~i;~j := #in~j; 143#L10 assume !(~i >= ~j);~mid~0 := (if ~i + ~j < 0 && 0 != (~i + ~j) % 2 then 1 + (~i + ~j) / 2 else (~i + ~j) / 2); 142#L12 assume 0 != #t~nondet0;havoc #t~nondet0; 132#L13 [2021-11-20 07:20:32,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1236460217, now seen corresponding path program 1 times [2021-11-20 07:20:32,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:32,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558479064] [2021-11-20 07:20:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:32,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:32,388 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:20:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:32,400 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:20:32,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:32,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1876964, now seen corresponding path program 1 times [2021-11-20 07:20:32,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:32,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821292729] [2021-11-20 07:20:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:32,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:32,418 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:20:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:32,430 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:20:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:32,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1684909610, now seen corresponding path program 1 times [2021-11-20 07:20:32,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:32,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46867752] [2021-11-20 07:20:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:32,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:32,446 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:20:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:20:32,466 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:20:33,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 07:20:33 BoogieIcfgContainer [2021-11-20 07:20:33,083 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 07:20:33,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:20:33,084 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:20:33,084 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:20:33,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:20:24" (3/4) ... [2021-11-20 07:20:33,087 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-20 07:20:33,139 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:20:33,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:20:33,142 INFO L158 Benchmark]: Toolchain (without parser) took 9132.89ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 59.0MB in the beginning and 53.7MB in the end (delta: 5.3MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2021-11-20 07:20:33,142 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 67.1MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:20:33,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.19ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 58.7MB in the beginning and 102.2MB in the end (delta: -43.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:20:33,143 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.96ms. Allocated memory is still 125.8MB. Free memory was 102.2MB in the beginning and 100.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:20:33,144 INFO L158 Benchmark]: Boogie Preprocessor took 17.39ms. Allocated memory is still 125.8MB. Free memory was 100.8MB in the beginning and 100.1MB in the end (delta: 784.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:20:33,145 INFO L158 Benchmark]: RCFGBuilder took 320.06ms. Allocated memory is still 125.8MB. Free memory was 100.1MB in the beginning and 90.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:20:33,145 INFO L158 Benchmark]: BuchiAutomizer took 8455.24ms. Allocated memory is still 125.8MB. Free memory was 90.9MB in the beginning and 55.7MB in the end (delta: 35.2MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2021-11-20 07:20:33,150 INFO L158 Benchmark]: Witness Printer took 56.70ms. Allocated memory is still 125.8MB. Free memory was 55.7MB in the beginning and 53.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:20:33,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 67.1MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.19ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 58.7MB in the beginning and 102.2MB in the end (delta: -43.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.96ms. Allocated memory is still 125.8MB. Free memory was 102.2MB in the beginning and 100.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.39ms. Allocated memory is still 125.8MB. Free memory was 100.8MB in the beginning and 100.1MB in the end (delta: 784.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.06ms. Allocated memory is still 125.8MB. Free memory was 100.1MB in the beginning and 90.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 8455.24ms. Allocated memory is still 125.8MB. Free memory was 90.9MB in the beginning and 55.7MB in the end (delta: 35.2MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. * Witness Printer took 56.70ms. Allocated memory is still 125.8MB. Free memory was 55.7MB in the beginning and 53.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * \old(i) + \old(j) and consists of 4 locations. The remainder module has 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 7.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 17 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 14 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital60 mio100 ax100 hnf96 lsp172 ukn62 mio100 lsp100 div207 bol100 ite100 ukn100 eq138 hnf61 smp91 dnf356 smp41 tf101 neg99 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 92ms VariablesStem: 0 VariablesLoop: 6 DisjunctsStem: 1 DisjunctsLoop: 3 SupportingInvariants: 0 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.9s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {y=0, \old(j)=0, \result=0, \old(i)=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@635a76c3=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@326953b3=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@28534bd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b9394d4=0, x=0, i=-1, mid=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2cc840ec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e6e481e=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(-1073741823<=x && x<=1073741823)) [L23] COND FALSE !(!(-1073741823<=y && y<=1073741823)) [L24] CALL bsearch(x, y) [L10] COND FALSE !(i>=j) [L11] int mid = (i+j)/2; [L12] COND TRUE __VERIFIER_nondet_int() Loop: [L13] CALL bsearch(i,mid) [L10] COND FALSE !(i>=j) [L11] int mid = (i+j)/2; [L12] COND TRUE __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-20 07:20:33,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c2763e-3d01-4122-8cff-02f21b481030/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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(TERM)