./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 9a8b2e8d 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_1.3.100.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 0.1.25-9a8b2e8 [2020-10-20 06:32:28,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:32:28,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:32:28,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:32:28,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:32:28,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:32:28,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:32:28,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:32:28,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:32:28,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:32:28,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:32:28,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:32:28,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:32:28,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:32:28,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:32:28,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:32:28,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:32:28,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:32:28,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:32:28,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:32:28,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:32:28,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:32:28,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:32:28,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:32:28,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:32:28,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:32:28,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:32:28,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:32:28,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:32:28,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:32:28,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:32:28,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:32:28,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:32:28,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:32:28,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:32:28,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:32:28,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:32:28,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:32:28,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:32:28,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:32:28,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:32:28,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:32:28,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:32:28,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:32:28,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:32:28,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:32:28,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:32:28,988 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:32:28,989 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:32:28,989 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:32:28,989 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:32:28,989 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:32:28,990 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:32:28,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:32:28,992 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:32:28,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:32:28,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:32:28,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:32:28,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:32:28,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:32:28,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:32:28,994 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:32:28,995 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:32:28,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:32:28,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:32:28,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:32:28,996 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:32:28,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:32:28,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:32:28,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:32:28,997 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:32:28,998 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:32:28,999 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 [2020-10-20 06:32:29,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:32:29,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:32:29,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:32:29,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:32:29,290 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:32:29,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2020-10-20 06:32:29,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/970643def/5f6f0a4b35de43298bbd599a450dc126/FLAG4e798cffd [2020-10-20 06:32:29,914 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:32:29,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2020-10-20 06:32:29,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/970643def/5f6f0a4b35de43298bbd599a450dc126/FLAG4e798cffd [2020-10-20 06:32:30,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/970643def/5f6f0a4b35de43298bbd599a450dc126 [2020-10-20 06:32:30,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:32:30,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:32:30,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:32:30,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:32:30,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:32:30,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56780bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30, skipping insertion in model container [2020-10-20 06:32:30,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:32:30,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:32:30,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:32:30,420 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:32:30,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:32:30,452 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:32:30,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30 WrapperNode [2020-10-20 06:32:30,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:32:30,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:32:30,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:32:30,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:32:30,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:32:30,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:32:30,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:32:30,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:32:30,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (1/1) ... [2020-10-20 06:32:30,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:32:30,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:32:30,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:32:30,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:32:30,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (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 [2020-10-20 06:32:30,591 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:32:30,592 INFO L138 BoogieDeclarations]: Found implementation of procedure bsearch [2020-10-20 06:32:30,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:32:30,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:32:30,785 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:32:30,786 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:32:30,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:32:30 BoogieIcfgContainer [2020-10-20 06:32:30,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:32:30,789 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:32:30,790 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:32:30,793 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:32:30,794 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:32:30,795 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:32:30" (1/3) ... [2020-10-20 06:32:30,796 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c25bc43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:32:30, skipping insertion in model container [2020-10-20 06:32:30,796 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:32:30,797 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:32:30" (2/3) ... [2020-10-20 06:32:30,802 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c25bc43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:32:30, skipping insertion in model container [2020-10-20 06:32:30,803 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:32:30,803 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:32:30" (3/3) ... [2020-10-20 06:32:30,806 INFO L373 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2020-10-20 06:32:30,870 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:32:30,870 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:32:30,870 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:32:30,870 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:32:30,871 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:32:30,871 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:32:30,874 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:32:30,875 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:32:30,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 06:32:30,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:32:30,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:32:30,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:32:30,924 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:32:30,924 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:32:30,925 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:32:30,925 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-10-20 06:32:30,927 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-10-20 06:32:30,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:32:30,928 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:32:30,928 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:32:30,929 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:32:30,937 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~x~0, main_~y~0;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 10#L22true assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 11#L23true assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 16#L24true call main_#t~ret5 := bsearch(main_~x~0, main_~y~0);< 14#bsearchENTRYtrue [2020-10-20 06:32:30,938 INFO L796 eck$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 [2020-10-20 06:32:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:32:30,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1390416, now seen corresponding path program 1 times [2020-10-20 06:32:30,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:32:30,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188157661] [2020-10-20 06:32:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:32:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:31,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:31,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:31,073 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:32:31,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:32:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash 927613, now seen corresponding path program 1 times [2020-10-20 06:32:31,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:32:31,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474271969] [2020-10-20 06:32:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:32:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:31,097 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:31,108 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:31,111 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:32:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:32:31,112 INFO L82 PathProgramCache]: Analyzing trace with hash -116842676, now seen corresponding path program 1 times [2020-10-20 06:32:31,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:32:31,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732418134] [2020-10-20 06:32:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:32:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:31,130 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:32:31,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:32:31,152 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:32:31,519 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-10-20 06:32:31,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:32:31 BoogieIcfgContainer [2020-10-20 06:32:31,671 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:32:31,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:32:31,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:32:31,674 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:32:31,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:32:30" (3/4) ... [2020-10-20 06:32:31,680 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-10-20 06:32:31,743 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:32:31,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:32:31,746 INFO L168 Benchmark]: Toolchain (without parser) took 1542.49 ms. Allocated memory was 42.5 MB in the beginning and 47.2 MB in the end (delta: 4.7 MB). Free memory was 23.6 MB in the beginning and 24.0 MB in the end (delta: -460.7 kB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,747 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 32.0 MB. Free memory was 10.9 MB in the beginning and 10.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.67 ms. Allocated memory is still 42.5 MB. Free memory was 22.7 MB in the beginning and 13.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.77 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 13.0 MB in the beginning and 24.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,750 INFO L168 Benchmark]: Boogie Preprocessor took 16.77 ms. Allocated memory is still 43.0 MB. Free memory was 24.8 MB in the beginning and 23.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,750 INFO L168 Benchmark]: RCFGBuilder took 271.60 ms. Allocated memory is still 43.0 MB. Free memory was 23.6 MB in the beginning and 13.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,751 INFO L168 Benchmark]: BuchiAutomizer took 881.72 ms. Allocated memory was 43.0 MB in the beginning and 47.2 MB in the end (delta: 4.2 MB). Free memory was 13.2 MB in the beginning and 26.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,752 INFO L168 Benchmark]: Witness Printer took 70.53 ms. Allocated memory is still 47.2 MB. Free memory was 26.1 MB in the beginning and 24.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:32:31,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 32.0 MB. Free memory was 10.9 MB in the beginning and 10.8 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 244.67 ms. Allocated memory is still 42.5 MB. Free memory was 22.7 MB in the beginning and 13.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 45.77 ms. Allocated memory was 42.5 MB in the beginning and 43.0 MB in the end (delta: 524.3 kB). Free memory was 13.0 MB in the beginning and 24.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 16.77 ms. Allocated memory is still 43.0 MB. Free memory was 24.8 MB in the beginning and 23.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 271.60 ms. Allocated memory is still 43.0 MB. Free memory was 23.6 MB in the beginning and 13.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 881.72 ms. Allocated memory was 43.0 MB in the beginning and 47.2 MB in the end (delta: 4.2 MB). Free memory was 13.2 MB in the beginning and 26.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. * Witness Printer took 70.53 ms. Allocated memory is still 47.2 MB. Free memory was 26.1 MB in the beginning and 24.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 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 0.8s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. 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@27839ba1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@99fadb9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4da4d253=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2398e723=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26f39766=0, NULL=0, i=0, mid=0, j=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66a4bc96=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...