./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c --full-output -ea --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.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 619980f24f1306727466f5c616de82a47a9f9fa9949a068930aef8a7aa603b17 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:27:02,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:27:02,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:27:02,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:27:02,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:27:02,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:27:02,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:27:02,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:27:02,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:27:02,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:27:02,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:27:02,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:27:02,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:27:02,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:27:02,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:27:02,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:27:02,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:27:02,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:27:02,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:27:02,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:27:02,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:27:02,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:27:02,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:27:02,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:27:02,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:27:02,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:27:02,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:27:02,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:27:02,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:27:02,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:27:02,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:27:02,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:27:02,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:27:02,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:27:02,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:27:02,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:27:02,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:27:02,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:27:02,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:27:02,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:27:02,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:27:02,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-02-21 03:27:02,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:27:02,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:27:02,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:27:02,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:27:02,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:27:02,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:27:02,606 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:27:02,606 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 03:27:02,606 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 03:27:02,607 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 03:27:02,607 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 03:27:02,607 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 03:27:02,607 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 03:27:02,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:27:02,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:27:02,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:27:02,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:27:02,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 03:27:02,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 03:27:02,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 03:27:02,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:27:02,609 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 03:27:02,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:27:02,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 03:27:02,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:27:02,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:27:02,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:27:02,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:27:02,611 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 03:27:02,611 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619980f24f1306727466f5c616de82a47a9f9fa9949a068930aef8a7aa603b17 [2022-02-21 03:27:02,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:27:02,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:27:02,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:27:02,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:27:02,826 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:27:02,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2022-02-21 03:27:02,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79dd37878/d5200c167b7b4d52afa67d16068121e5/FLAG73fe312dc [2022-02-21 03:27:03,198 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:27:03,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2022-02-21 03:27:03,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79dd37878/d5200c167b7b4d52afa67d16068121e5/FLAG73fe312dc [2022-02-21 03:27:03,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79dd37878/d5200c167b7b4d52afa67d16068121e5 [2022-02-21 03:27:03,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:27:03,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:27:03,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:27:03,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:27:03,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:27:03,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54755495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03, skipping insertion in model container [2022-02-21 03:27:03,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:27:03,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:27:03,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:27:03,371 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:27:03,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:27:03,399 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:27:03,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03 WrapperNode [2022-02-21 03:27:03,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:27:03,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:27:03,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:27:03,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:27:03,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,424 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2022-02-21 03:27:03,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:27:03,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:27:03,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:27:03,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:27:03,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:27:03,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:27:03,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:27:03,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:27:03,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (1/1) ... [2022-02-21 03:27:03,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:27:03,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:27:03,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 03:27:03,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-02-21 03:27:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:27:03,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:27:03,536 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:27:03,537 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:27:03,654 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:27:03,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:27:03,674 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-21 03:27:03,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:27:03 BoogieIcfgContainer [2022-02-21 03:27:03,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:27:03,676 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 03:27:03,676 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 03:27:03,679 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 03:27:03,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:27:03,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 03:27:03" (1/3) ... [2022-02-21 03:27:03,681 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6fec1669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:27:03, skipping insertion in model container [2022-02-21 03:27:03,681 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:27:03,681 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:27:03" (2/3) ... [2022-02-21 03:27:03,682 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6fec1669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:27:03, skipping insertion in model container [2022-02-21 03:27:03,682 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:27:03,682 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:27:03" (3/3) ... [2022-02-21 03:27:03,683 INFO L388 chiAutomizerObserver]: Analyzing ICFG TwoFloatInterv.c [2022-02-21 03:27:03,722 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 03:27:03,722 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 03:27:03,722 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 03:27:03,723 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 03:27:03,723 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 03:27:03,723 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 03:27:03,723 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 03:27:03,723 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 03:27:03,738 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:27:03,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-02-21 03:27:03,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:27:03,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:27:03,761 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2022-02-21 03:27:03,761 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-02-21 03:27:03,761 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 03:27:03,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 03:27:03,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-02-21 03:27:03,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:27:03,766 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:27:03,766 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2022-02-21 03:27:03,766 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-02-21 03:27:03,772 INFO L791 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 4#L16-1true [2022-02-21 03:27:03,772 INFO L793 eck$LassoCheckResult]: Loop: 4#L16-1true assume !!(main_~i~0#1 > 0 && main_~i~0#1 < 50); 9#L10true assume !(main_~i~0#1 < 20); 6#L10-2true assume main_~i~0#1 > 10;main_~i~0#1 := 1 + main_~i~0#1; 7#L13-1true assume 30 <= main_~i~0#1 && main_~i~0#1 <= 40;main_~i~0#1 := main_~i~0#1 - 1; 4#L16-1true [2022-02-21 03:27:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:27:03,781 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-02-21 03:27:03,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:27:03,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350129610] [2022-02-21 03:27:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:27:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:27:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:27:03,853 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:27:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:27:03,869 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:27:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:27:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2022-02-21 03:27:03,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:27:03,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722925297] [2022-02-21 03:27:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:27:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:27:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:27:03,896 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:27:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:27:03,921 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:27:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:27:03,923 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2022-02-21 03:27:03,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:27:03,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962484470] [2022-02-21 03:27:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:27:03,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:27:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:27:03,944 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:27:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:27:03,954 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:27:04,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 03:27:04 BoogieIcfgContainer [2022-02-21 03:27:04,064 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 03:27:04,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:27:04,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:27:04,065 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:27:04,065 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:27:03" (3/4) ... [2022-02-21 03:27:04,067 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-02-21 03:27:04,097 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 03:27:04,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:27:04,098 INFO L158 Benchmark]: Toolchain (without parser) took 872.90ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 46.7MB in the beginning and 81.8MB in the end (delta: -35.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:27:04,099 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 86.0MB. Free memory is still 63.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:27:04,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.74ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 46.5MB in the beginning and 93.3MB in the end (delta: -46.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:27:04,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.91ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 92.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:27:04,102 INFO L158 Benchmark]: Boogie Preprocessor took 12.29ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 91.4MB in the end (delta: 752.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:27:04,102 INFO L158 Benchmark]: RCFGBuilder took 237.29ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 81.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-21 03:27:04,102 INFO L158 Benchmark]: BuchiAutomizer took 388.25ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 83.9MB in the end (delta: -2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:27:04,103 INFO L158 Benchmark]: Witness Printer took 32.20ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 82.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:27:04,104 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 86.0MB. Free memory is still 63.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.74ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 46.5MB in the beginning and 93.3MB in the end (delta: -46.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.91ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 92.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.29ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 91.4MB in the end (delta: 752.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 237.29ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 81.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 388.25ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 83.9MB in the end (delta: -2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 32.20ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 82.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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 - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: 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 {i=29, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@266bf92a=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-02-21 03:27:04,131 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)