./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Binary_Search-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/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 --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 46affb860f1d0d7b6656a3074088d89f6e139022ec85b08907ba16419f351bb9 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:08:15,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:08:15,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-15 00:08:15,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:08:15,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:08:15,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:08:15,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:08:15,694 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:08:15,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:08:15,696 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:08:15,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:08:15,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:08:15,698 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:08:15,699 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-15 00:08:15,699 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-15 00:08:15,699 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-15 00:08:15,699 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-15 00:08:15,700 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-15 00:08:15,700 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-15 00:08:15,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:08:15,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-15 00:08:15,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:08:15,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:08:15,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-15 00:08:15,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-15 00:08:15,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-15 00:08:15,705 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:08:15,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:08:15,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:08:15,706 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-15 00:08:15,706 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:08:15,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:08:15,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:08:15,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:08:15,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:08:15,709 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-15 00:08:15,709 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46affb860f1d0d7b6656a3074088d89f6e139022ec85b08907ba16419f351bb9 [2024-10-15 00:08:15,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:08:16,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:08:16,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:08:16,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:08:16,016 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:08:16,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2024-10-15 00:08:17,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:08:17,731 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:08:17,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2024-10-15 00:08:17,742 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c0f3c667/0aa710c8c37544ceb60bd25602e20fdf/FLAGf899d301b [2024-10-15 00:08:17,771 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c0f3c667/0aa710c8c37544ceb60bd25602e20fdf [2024-10-15 00:08:17,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:08:17,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:08:17,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:08:17,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:08:17,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:08:17,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:17" (1/1) ... [2024-10-15 00:08:17,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d16c88c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:17, skipping insertion in model container [2024-10-15 00:08:17,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:17" (1/1) ... [2024-10-15 00:08:17,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:08:18,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:08:18,030 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:08:18,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:08:18,062 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:08:18,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18 WrapperNode [2024-10-15 00:08:18,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:08:18,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:08:18,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:08:18,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:08:18,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,090 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2024-10-15 00:08:18,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:08:18,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:08:18,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:08:18,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:08:18,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,115 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-15 00:08:18,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:08:18,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:08:18,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:08:18,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:08:18,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (1/1) ... [2024-10-15 00:08:18,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:08:18,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:08:18,181 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) [2024-10-15 00:08:18,191 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 [2024-10-15 00:08:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure binary_search [2024-10-15 00:08:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure binary_search [2024-10-15 00:08:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:08:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:08:18,303 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:08:18,306 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:08:18,501 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-15 00:08:18,502 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:08:18,513 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:08:18,514 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 00:08:18,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:18 BoogieIcfgContainer [2024-10-15 00:08:18,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:08:18,516 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-15 00:08:18,516 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-15 00:08:18,520 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-15 00:08:18,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:08:18,521 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 12:08:17" (1/3) ... [2024-10-15 00:08:18,522 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1efb825c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:08:18, skipping insertion in model container [2024-10-15 00:08:18,522 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:08:18,522 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:18" (2/3) ... [2024-10-15 00:08:18,523 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1efb825c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:08:18, skipping insertion in model container [2024-10-15 00:08:18,523 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:08:18,523 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:18" (3/3) ... [2024-10-15 00:08:18,526 INFO L332 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2024-10-15 00:08:18,581 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-15 00:08:18,582 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-15 00:08:18,582 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-15 00:08:18,582 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-15 00:08:18,582 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-15 00:08:18,583 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-15 00:08:18,583 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-15 00:08:18,583 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-15 00:08:18,587 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) [2024-10-15 00:08:18,608 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-15 00:08:18,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:08:18,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:08:18,615 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-10-15 00:08:18,615 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-15 00:08:18,615 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-15 00:08:18,616 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) [2024-10-15 00:08:18,618 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-15 00:08:18,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:08:18,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:08:18,618 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-10-15 00:08:18,618 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-15 00:08:18,626 INFO L745 eck$LassoCheckResult]: Stem: 14#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 11#L22true assume !!(-1073741823 <= main_~x~0#1 && main_~x~0#1 <= 1073741823); 15#L23true assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823); 17#L24true call main_#t~ret5#1 := binary_search(main_~x~0#1, main_~y~0#1);< 5#$Ultimate##0true [2024-10-15 00:08:18,627 INFO L747 eck$LassoCheckResult]: Loop: 5#$Ultimate##0true ~i := #in~i;~j := #in~j; 9#L10true assume !(~i >= ~j);~mid~0 := (if ~i + ~j < 0 && 0 != (~i + ~j) % 2 then 1 + (~i + ~j) / 2 else (~i + ~j) / 2);havoc #t~nondet0; 16#L12true assume 0 != #t~nondet0;havoc #t~nondet0; 13#L13true call #t~ret1 := binary_search(~i, ~mid~0);< 5#$Ultimate##0true [2024-10-15 00:08:18,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:08:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2024-10-15 00:08:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:08:18,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334027901] [2024-10-15 00:08:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:08:18,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:08:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:18,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:08:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:18,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:08:18,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:08:18,762 INFO L85 PathProgramCache]: Analyzing trace with hash 927614, now seen corresponding path program 1 times [2024-10-15 00:08:18,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:08:18,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076562583] [2024-10-15 00:08:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:08:18,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:08:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:18,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:08:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:18,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:08:18,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:08:18,815 INFO L85 PathProgramCache]: Analyzing trace with hash 324438969, now seen corresponding path program 1 times [2024-10-15 00:08:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:08:18,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283632371] [2024-10-15 00:08:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:08:18,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:08:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:18,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:08:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:18,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:08:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:19,272 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:08:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:19,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 12:08:19 BoogieIcfgContainer [2024-10-15 00:08:19,296 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-15 00:08:19,296 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:08:19,297 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:08:19,297 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:08:19,297 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:18" (3/4) ... [2024-10-15 00:08:19,298 INFO L136 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-15 00:08:19,326 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-15 00:08:19,327 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:08:19,328 INFO L158 Benchmark]: Toolchain (without parser) took 1547.83ms. Allocated memory was 188.7MB in the beginning and 260.0MB in the end (delta: 71.3MB). Free memory was 116.1MB in the beginning and 182.0MB in the end (delta: -65.9MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2024-10-15 00:08:19,328 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 188.7MB. Free memory is still 140.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:08:19,329 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.63ms. Allocated memory is still 188.7MB. Free memory was 116.1MB in the beginning and 105.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-15 00:08:19,329 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.15ms. Allocated memory is still 188.7MB. Free memory was 105.6MB in the beginning and 104.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:08:19,330 INFO L158 Benchmark]: Boogie Preprocessor took 44.30ms. Allocated memory is still 188.7MB. Free memory was 104.2MB in the beginning and 102.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:08:19,330 INFO L158 Benchmark]: RCFGBuilder took 373.91ms. Allocated memory was 188.7MB in the beginning and 260.0MB in the end (delta: 71.3MB). Free memory was 102.8MB in the beginning and 227.1MB in the end (delta: -124.3MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2024-10-15 00:08:19,331 INFO L158 Benchmark]: BuchiAutomizer took 780.16ms. Allocated memory is still 260.0MB. Free memory was 227.1MB in the beginning and 183.0MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-10-15 00:08:19,331 INFO L158 Benchmark]: Witness Printer took 30.27ms. Allocated memory is still 260.0MB. Free memory was 183.0MB in the beginning and 182.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:08:19,333 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 188.7MB. Free memory is still 140.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.63ms. Allocated memory is still 188.7MB. Free memory was 116.1MB in the beginning and 105.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.15ms. Allocated memory is still 188.7MB. Free memory was 105.6MB in the beginning and 104.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.30ms. Allocated memory is still 188.7MB. Free memory was 104.2MB in the beginning and 102.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 373.91ms. Allocated memory was 188.7MB in the beginning and 260.0MB in the end (delta: 71.3MB). Free memory was 102.8MB in the beginning and 227.1MB in the end (delta: -124.3MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 780.16ms. Allocated memory is still 260.0MB. Free memory was 227.1MB in the beginning and 183.0MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 30.27ms. Allocated memory is still 260.0MB. Free memory was 183.0MB in the beginning and 182.0MB in the end (delta: 1.0MB). There was no memory consumed. 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 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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 - LassoShapedNonTerminationArgument [Line: 8]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(-1073741823<=x && x<=1073741823)) VAL [x=-1] [L23] COND FALSE !(!(-1073741823<=y && y<=1073741823)) VAL [x=-1, y=0] [L24] CALL binary_search(x, y) VAL [\old(i)=-1, \old(j)=0] Loop: [L10] COND FALSE !(i>=j) [L11] int mid = (i+j)/2; [L12] COND TRUE __VERIFIER_nondet_int() [L13] CALL binary_search(i,mid) End of lasso representation. - 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)) VAL [x=-1] [L23] COND FALSE !(!(-1073741823<=y && y<=1073741823)) VAL [x=-1, y=0] [L24] CALL binary_search(x, y) VAL [\old(i)=-1, \old(j)=0] Loop: [L10] COND FALSE !(i>=j) [L11] int mid = (i+j)/2; [L12] COND TRUE __VERIFIER_nondet_int() [L13] CALL binary_search(i,mid) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-15 00:08:19,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)