./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 c82b80ee1d840c8880cc584253dffda998627af8 ............................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:39:30,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:39:30,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:39:30,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:39:30,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:39:30,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:39:30,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:39:30,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:39:30,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:39:30,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:39:30,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:39:30,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:39:30,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:39:30,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:39:30,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:39:30,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:39:30,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:39:30,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:39:30,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:39:30,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:39:30,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:39:30,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:39:30,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:39:30,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:39:30,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:39:30,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:39:30,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:39:30,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:39:30,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:39:30,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:39:30,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:39:30,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:39:30,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:39:30,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:39:30,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:39:30,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:39:30,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:39:30,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:39:30,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:39:30,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:39:30,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:39:30,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:39:30,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:39:30,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:39:30,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:39:30,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:39:30,489 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:39:30,490 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:39:30,490 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:39:30,490 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:39:30,490 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:39:30,491 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:39:30,491 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:39:30,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:39:30,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:39:30,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:39:30,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:39:30,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:39:30,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:39:30,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:39:30,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:39:30,493 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:39:30,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:39:30,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:39:30,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:39:30,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:39:30,495 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:39:30,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:39:30,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:39:30,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:39:30,498 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:39:30,499 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:39:30,500 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> c82b80ee1d840c8880cc584253dffda998627af8 [2020-10-19 18:39:30,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:39:30,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:39:30,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:39:30,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:39:30,930 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:39:30,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2020-10-19 18:39:31,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc1b2b91/ef15ce481cca4a5680847519745abdbc/FLAGb1e5d7d7e [2020-10-19 18:39:31,482 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:39:31,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2020-10-19 18:39:31,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc1b2b91/ef15ce481cca4a5680847519745abdbc/FLAGb1e5d7d7e [2020-10-19 18:39:31,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc1b2b91/ef15ce481cca4a5680847519745abdbc [2020-10-19 18:39:31,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:39:31,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:39:31,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:39:31,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:39:31,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:39:31,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:39:31" (1/1) ... [2020-10-19 18:39:31,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e16cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:31, skipping insertion in model container [2020-10-19 18:39:31,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:39:31" (1/1) ... [2020-10-19 18:39:31,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:39:31,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:39:32,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:39:32,135 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:39:32,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:39:32,162 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:39:32,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32 WrapperNode [2020-10-19 18:39:32,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:39:32,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:39:32,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:39:32,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:39:32,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... [2020-10-19 18:39:32,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... [2020-10-19 18:39:32,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:39:32,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:39:32,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:39:32,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:39:32,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... [2020-10-19 18:39:32,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... [2020-10-19 18:39:32,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... [2020-10-19 18:39:32,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... [2020-10-19 18:39:32,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... [2020-10-19 18:39:32,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... [2020-10-19 18:39:32,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... [2020-10-19 18:39:32,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:39:32,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:39:32,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:39:32,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:39:32,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:39:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:39:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure bsearch [2020-10-19 18:39:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:39:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:39:32,517 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:39:32,518 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:39:32,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:39:32 BoogieIcfgContainer [2020-10-19 18:39:32,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:39:32,520 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:39:32,521 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:39:32,524 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:39:32,526 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:39:32,526 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:39:31" (1/3) ... [2020-10-19 18:39:32,527 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58c83139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:39:32, skipping insertion in model container [2020-10-19 18:39:32,528 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:39:32,528 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:39:32" (2/3) ... [2020-10-19 18:39:32,529 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58c83139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:39:32, skipping insertion in model container [2020-10-19 18:39:32,529 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:39:32,529 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:39:32" (3/3) ... [2020-10-19 18:39:32,531 INFO L373 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2020-10-19 18:39:32,590 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:39:32,591 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:39:32,591 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:39:32,591 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:39:32,592 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:39:32,592 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:39:32,592 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:39:32,593 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:39:32,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-19 18:39:32,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-19 18:39:32,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:39:32,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:39:32,658 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:39:32,659 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:39:32,659 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:39:32,659 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-19 18:39:32,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-19 18:39:32,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:39:32,662 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:39:32,663 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:39:32,663 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:39:32,673 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~x~0, main_~y~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 10#L22true assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 11#L23true assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 16#L24true call main_#t~ret5 := bsearch(main_~x~0, main_~y~0);< 14#bsearchENTRYtrue [2020-10-19 18:39:32,673 INFO L796 eck$LassoCheckResult]: Loop: 14#bsearchENTRYtrue ~i := #in~i;~j := #in~j; 6#L10true assume !(~i >= ~j);~mid~0 := (if ~i + ~j < 0 && 0 != (~i + ~j) % 2 then 1 + (~i + ~j) / 2 else (~i + ~j) / 2); 3#L12true assume 0 != #t~nondet0;havoc #t~nondet0; 18#L13true call #t~ret1 := bsearch(~i, ~mid~0);< 14#bsearchENTRYtrue [2020-10-19 18:39:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:39:32,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1390416, now seen corresponding path program 1 times [2020-10-19 18:39:32,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:39:32,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612156579] [2020-10-19 18:39:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:39:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:39:32,788 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:39:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:39:32,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:39:32,815 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:39:32,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:39:32,817 INFO L82 PathProgramCache]: Analyzing trace with hash 927613, now seen corresponding path program 1 times [2020-10-19 18:39:32,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:39:32,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436125376] [2020-10-19 18:39:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:39:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:39:32,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:39:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:39:32,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:39:32,852 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:39:32,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:39:32,855 INFO L82 PathProgramCache]: Analyzing trace with hash -116842676, now seen corresponding path program 1 times [2020-10-19 18:39:32,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:39:32,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171017472] [2020-10-19 18:39:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:39:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:39:32,873 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:39:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:39:32,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:39:32,903 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:39:33,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:39:33 BoogieIcfgContainer [2020-10-19 18:39:33,278 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:39:33,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:39:33,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:39:33,279 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:39:33,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:39:32" (3/4) ... [2020-10-19 18:39:33,284 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-19 18:39:33,330 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:39:33,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:39:33,334 INFO L168 Benchmark]: Toolchain (without parser) took 1443.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -102.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:39:33,335 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:39:33,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.46 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:39:33,337 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:39:33,338 INFO L168 Benchmark]: Boogie Preprocessor took 18.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:39:33,339 INFO L168 Benchmark]: RCFGBuilder took 244.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:39:33,339 INFO L168 Benchmark]: BuchiAutomizer took 757.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:39:33,340 INFO L168 Benchmark]: Witness Printer took 52.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:39:33,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.46 ms. Allocated memory is still 1.0 GB. Free memory was 960.0 MB in the beginning and 949.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 244.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 757.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * Witness Printer took 52.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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: No data available 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 - 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, \result=0, \old(i)=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4438cfda=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f672014=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@210f1dad=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a19d56=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27b30bbb=0, NULL=0, i=0, mid=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76228650=5, x=0, y=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! Received shutdown request...