./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 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Binary_Search-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.2-?-3598765 [2022-07-22 01:24:07,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 01:24:07,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 01:24:07,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 01:24:07,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 01:24:07,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 01:24:07,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 01:24:07,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 01:24:07,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 01:24:07,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 01:24:07,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 01:24:07,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 01:24:07,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 01:24:07,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 01:24:07,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 01:24:07,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 01:24:07,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 01:24:07,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 01:24:07,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 01:24:07,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 01:24:07,229 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 01:24:07,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 01:24:07,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 01:24:07,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 01:24:07,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 01:24:07,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 01:24:07,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 01:24:07,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 01:24:07,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 01:24:07,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 01:24:07,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 01:24:07,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 01:24:07,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 01:24:07,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 01:24:07,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 01:24:07,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 01:24:07,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 01:24:07,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 01:24:07,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 01:24:07,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 01:24:07,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 01:24:07,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 01:24:07,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-22 01:24:07,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 01:24:07,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 01:24:07,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 01:24:07,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 01:24:07,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 01:24:07,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 01:24:07,273 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 01:24:07,273 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 01:24:07,273 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 01:24:07,274 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 01:24:07,274 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 01:24:07,274 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 01:24:07,274 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 01:24:07,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 01:24:07,275 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 01:24:07,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 01:24:07,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 01:24:07,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 01:24:07,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 01:24:07,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 01:24:07,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 01:24:07,276 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 01:24:07,276 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 01:24:07,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 01:24:07,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 01:24:07,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 01:24:07,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 01:24:07,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 01:24:07,278 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 01:24:07,287 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c62b8cd14983fa4dda29102c5113315628115eea4aa89f3549fa0abedadf594b [2022-07-22 01:24:07,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 01:24:07,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 01:24:07,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 01:24:07,585 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 01:24:07,585 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 01:24:07,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2022-07-22 01:24:07,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cb35dff5/f035f4c9ac574e90aeb5bafcb64b859b/FLAG890ff1618 [2022-07-22 01:24:08,006 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 01:24:08,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2022-07-22 01:24:08,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cb35dff5/f035f4c9ac574e90aeb5bafcb64b859b/FLAG890ff1618 [2022-07-22 01:24:08,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cb35dff5/f035f4c9ac574e90aeb5bafcb64b859b [2022-07-22 01:24:08,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 01:24:08,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 01:24:08,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 01:24:08,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 01:24:08,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 01:24:08,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddf2e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08, skipping insertion in model container [2022-07-22 01:24:08,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 01:24:08,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 01:24:08,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:24:08,182 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 01:24:08,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:24:08,205 INFO L208 MainTranslator]: Completed translation [2022-07-22 01:24:08,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08 WrapperNode [2022-07-22 01:24:08,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 01:24:08,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 01:24:08,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 01:24:08,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 01:24:08,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,244 INFO L137 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-07-22 01:24:08,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 01:24:08,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 01:24:08,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 01:24:08,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 01:24:08,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 01:24:08,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 01:24:08,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 01:24:08,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 01:24:08,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (1/1) ... [2022-07-22 01:24:08,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:24:08,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:24:08,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-22 01:24:08,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-22 01:24:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2022-07-22 01:24:08,333 INFO L138 BoogieDeclarations]: Found implementation of procedure bsearch [2022-07-22 01:24:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 01:24:08,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 01:24:08,379 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 01:24:08,381 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 01:24:08,473 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 01:24:08,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 01:24:08,478 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 01:24:08,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:24:08 BoogieIcfgContainer [2022-07-22 01:24:08,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 01:24:08,481 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 01:24:08,481 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 01:24:08,484 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 01:24:08,484 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:24:08,484 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 01:24:08" (1/3) ... [2022-07-22 01:24:08,485 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ee12f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:24:08, skipping insertion in model container [2022-07-22 01:24:08,485 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:24:08,485 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:24:08" (2/3) ... [2022-07-22 01:24:08,486 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ee12f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:24:08, skipping insertion in model container [2022-07-22 01:24:08,486 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:24:08,486 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:24:08" (3/3) ... [2022-07-22 01:24:08,487 INFO L354 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2022-07-22 01:24:08,530 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 01:24:08,530 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 01:24:08,530 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 01:24:08,530 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 01:24:08,530 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 01:24:08,530 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 01:24:08,530 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 01:24:08,531 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 01:24:08,540 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) [2022-07-22 01:24:08,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-22 01:24:08,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:24:08,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:24:08,559 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 01:24:08,559 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-22 01:24:08,559 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 01:24:08,559 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) [2022-07-22 01:24:08,562 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-22 01:24:08,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:24:08,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:24:08,563 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 01:24:08,563 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-22 01:24:08,568 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#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; 10#L22true assume !!(-1073741823 <= main_~x~0#1 && main_~x~0#1 <= 1073741823); 15#L23true assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823); 18#L24true call main_#t~ret5#1 := bsearch(main_~x~0#1, main_~y~0#1);< 5#bsearchENTRYtrue [2022-07-22 01:24:08,568 INFO L754 eck$LassoCheckResult]: Loop: 5#bsearchENTRYtrue ~i := #in~i;~j := #in~j; 16#L10true assume !(~i >= ~j);~mid~0 := (if ~i + ~j < 0 && 0 != (~i + ~j) % 2 then 1 + (~i + ~j) / 2 else (~i + ~j) / 2); 17#L12true assume 0 != #t~nondet0;havoc #t~nondet0; 9#L13true call #t~ret1 := bsearch(~i, ~mid~0);< 5#bsearchENTRYtrue [2022-07-22 01:24:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:24:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2022-07-22 01:24:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:24:08,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107229130] [2022-07-22 01:24:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:24:08,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:24:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:08,666 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:24:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:08,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:24:08,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:24:08,691 INFO L85 PathProgramCache]: Analyzing trace with hash 927614, now seen corresponding path program 1 times [2022-07-22 01:24:08,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:24:08,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559033637] [2022-07-22 01:24:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:24:08,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:24:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:08,719 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:24:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:08,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:24:08,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:24:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash 324438969, now seen corresponding path program 1 times [2022-07-22 01:24:08,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:24:08,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052465733] [2022-07-22 01:24:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:24:08,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:24:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:08,763 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:24:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:24:08,782 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:24:09,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 01:24:09 BoogieIcfgContainer [2022-07-22 01:24:09,049 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 01:24:09,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 01:24:09,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 01:24:09,049 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 01:24:09,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:24:08" (3/4) ... [2022-07-22 01:24:09,052 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-22 01:24:09,081 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 01:24:09,082 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 01:24:09,083 INFO L158 Benchmark]: Toolchain (without parser) took 1052.85ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 31.7MB in the beginning and 34.4MB in the end (delta: -2.7MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2022-07-22 01:24:09,083 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:24:09,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.04ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 31.5MB in the beginning and 58.2MB in the end (delta: -26.7MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-07-22 01:24:09,087 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.63ms. Allocated memory is still 73.4MB. Free memory was 58.0MB in the beginning and 56.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 01:24:09,088 INFO L158 Benchmark]: Boogie Preprocessor took 16.05ms. Allocated memory is still 73.4MB. Free memory was 56.6MB in the beginning and 55.8MB in the end (delta: 761.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:24:09,088 INFO L158 Benchmark]: RCFGBuilder took 216.43ms. Allocated memory is still 73.4MB. Free memory was 55.8MB in the beginning and 47.2MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 01:24:09,088 INFO L158 Benchmark]: BuchiAutomizer took 567.91ms. Allocated memory is still 73.4MB. Free memory was 47.2MB in the beginning and 36.1MB in the end (delta: 11.1MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-07-22 01:24:09,089 INFO L158 Benchmark]: Witness Printer took 32.60ms. Allocated memory is still 73.4MB. Free memory was 36.1MB in the beginning and 34.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 01:24:09,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 36.1MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 175.04ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 31.5MB in the beginning and 58.2MB in the end (delta: -26.7MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.63ms. Allocated memory is still 73.4MB. Free memory was 58.0MB in the beginning and 56.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.05ms. Allocated memory is still 73.4MB. Free memory was 56.6MB in the beginning and 55.8MB in the end (delta: 761.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.43ms. Allocated memory is still 73.4MB. Free memory was 55.8MB in the beginning and 47.2MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 567.91ms. Allocated memory is still 73.4MB. Free memory was 47.2MB in the beginning and 36.1MB in the end (delta: 11.1MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Witness Printer took 32.60ms. Allocated memory is still 73.4MB. Free memory was 36.1MB in the beginning and 34.4MB in the end (delta: 1.8MB). 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 8]: 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 {\old(j)=0, \result=0, \old(i)=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41ee565c=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78e6b6aa=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56437fa5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21c566e3=0, i=0, mid=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@772409a2=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e5e12be=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 8]: 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) Loop: [L10] COND FALSE !(i>=j) [L11] int mid = (i+j)/2; [L12] COND TRUE __VERIFIER_nondet_int() [L13] CALL bsearch(i,mid) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-22 01:24:09,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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)