./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 15:08:21,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 15:08:21,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 15:08:21,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 15:08:21,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 15:08:21,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 15:08:21,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 15:08:21,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 15:08:21,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 15:08:21,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 15:08:21,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 15:08:21,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 15:08:21,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 15:08:21,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 15:08:21,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 15:08:21,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 15:08:21,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 15:08:21,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 15:08:21,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 15:08:21,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 15:08:21,555 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 15:08:21,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 15:08:21,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 15:08:21,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 15:08:21,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 15:08:21,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 15:08:21,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 15:08:21,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 15:08:21,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 15:08:21,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 15:08:21,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 15:08:21,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 15:08:21,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 15:08:21,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 15:08:21,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 15:08:21,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 15:08:21,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 15:08:21,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 15:08:21,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 15:08:21,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 15:08:21,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 15:08:21,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 15:08:21,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-14 15:08:21,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 15:08:21,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 15:08:21,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 15:08:21,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 15:08:21,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 15:08:21,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 15:08:21,602 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 15:08:21,602 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 15:08:21,602 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 15:08:21,603 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 15:08:21,603 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 15:08:21,603 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 15:08:21,603 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 15:08:21,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 15:08:21,604 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 15:08:21,604 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 15:08:21,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 15:08:21,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 15:08:21,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 15:08:21,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 15:08:21,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 15:08:21,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 15:08:21,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 15:08:21,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 15:08:21,607 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 15:08:21,607 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 15:08:21,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 15:08:21,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 15:08:21,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 15:08:21,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 15:08:21,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 15:08:21,609 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 15:08:21,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b [2022-07-14 15:08:21,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 15:08:21,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 15:08:21,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 15:08:21,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 15:08:21,837 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 15:08:21,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2022-07-14 15:08:21,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a7feb3dd/147447dccdc44372ad9b9e522aa34ac1/FLAG22d5cb61d [2022-07-14 15:08:22,305 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 15:08:22,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2022-07-14 15:08:22,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a7feb3dd/147447dccdc44372ad9b9e522aa34ac1/FLAG22d5cb61d [2022-07-14 15:08:22,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a7feb3dd/147447dccdc44372ad9b9e522aa34ac1 [2022-07-14 15:08:22,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 15:08:22,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 15:08:22,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 15:08:22,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 15:08:22,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 15:08:22,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d6d510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22, skipping insertion in model container [2022-07-14 15:08:22,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 15:08:22,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 15:08:22,504 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2022-07-14 15:08:22,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:08:22,563 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 15:08:22,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2022-07-14 15:08:22,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:08:22,616 INFO L208 MainTranslator]: Completed translation [2022-07-14 15:08:22,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22 WrapperNode [2022-07-14 15:08:22,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 15:08:22,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 15:08:22,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 15:08:22,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 15:08:22,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,662 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 489 [2022-07-14 15:08:22,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 15:08:22,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 15:08:22,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 15:08:22,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 15:08:22,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 15:08:22,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 15:08:22,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 15:08:22,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 15:08:22,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (1/1) ... [2022-07-14 15:08:22,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:22,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-14 15:08:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 15:08:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 15:08:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 15:08:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 15:08:22,877 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 15:08:22,878 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 15:08:23,411 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 15:08:23,418 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 15:08:23,419 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-14 15:08:23,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:08:23 BoogieIcfgContainer [2022-07-14 15:08:23,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 15:08:23,422 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 15:08:23,422 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 15:08:23,425 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 15:08:23,425 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:08:23,425 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 03:08:22" (1/3) ... [2022-07-14 15:08:23,426 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79906fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:08:23, skipping insertion in model container [2022-07-14 15:08:23,426 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:08:23,427 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:22" (2/3) ... [2022-07-14 15:08:23,427 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79906fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:08:23, skipping insertion in model container [2022-07-14 15:08:23,427 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:08:23,427 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:08:23" (3/3) ... [2022-07-14 15:08:23,428 INFO L354 chiAutomizerObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2022-07-14 15:08:23,474 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 15:08:23,474 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 15:08:23,475 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 15:08:23,475 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 15:08:23,475 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 15:08:23,475 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 15:08:23,475 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 15:08:23,476 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 15:08:23,480 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 157 states, 156 states have (on average 1.7756410256410255) internal successors, (277), 156 states have internal predecessors, (277), 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) [2022-07-14 15:08:23,504 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-14 15:08:23,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:23,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:23,510 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 15:08:23,510 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:23,510 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 15:08:23,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 157 states, 156 states have (on average 1.7756410256410255) internal successors, (277), 156 states have internal predecessors, (277), 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) [2022-07-14 15:08:23,524 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-14 15:08:23,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:23,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:23,530 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 15:08:23,530 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:23,536 INFO L752 eck$LassoCheckResult]: Stem: 138#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 46#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 80#L30true assume !(0 == base2flt_~m#1 % 4294967296); 146#L36true assume !(base2flt_~m#1 % 4294967296 < 16777216); 22#L58-2true [2022-07-14 15:08:23,536 INFO L754 eck$LassoCheckResult]: Loop: 22#L58-2true assume !false; 120#L59true assume base2flt_~m#1 % 4294967296 >= 33554432; 152#L60true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 22#L58-2true [2022-07-14 15:08:23,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2022-07-14 15:08:23,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649170233] [2022-07-14 15:08:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:08:23,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649170233] [2022-07-14 15:08:23,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649170233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:23,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:23,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 15:08:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469962926] [2022-07-14 15:08:23,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:23,735 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:23,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,739 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2022-07-14 15:08:23,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142815921] [2022-07-14 15:08:23,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,764 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:23,846 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:23,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:23,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:23,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:23,848 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:23,848 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,848 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:23,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:23,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2022-07-14 15:08:23,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:23,849 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:23,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:23,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:24,003 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,004 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:24,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:24,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:24,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-14 15:08:24,061 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 15:08:24,062 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 15:08:24,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:24,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:24,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-14 15:08:24,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:24,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:24,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:24,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-14 15:08:24,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:24,125 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,175 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:24,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:24,180 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,180 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,180 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,180 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,181 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:24,181 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,181 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,181 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,181 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2022-07-14 15:08:24,181 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,181 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:24,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:24,300 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,305 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:24,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:24,322 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:08:24,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:24,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:24,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:24,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:24,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:24,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-14 15:08:24,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:24,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:24,349 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:08:24,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:24,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:24,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-14 15:08:24,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:08:24,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:24,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:24,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:24,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:24,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:24,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:24,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:24,407 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:24,428 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:24,429 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:24,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:24,467 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:24,467 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:24,467 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:24,468 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-14 15:08:24,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-14 15:08:24,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:24,494 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:08:24,589 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-14 15:08:24,591 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 157 states, 156 states have (on average 1.7756410256410255) internal successors, (277), 156 states have internal predecessors, (277), 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-07-14 15:08:24,708 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 157 states, 156 states have (on average 1.7756410256410255) internal successors, (277), 156 states have internal predecessors, (277), 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). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Result 485 states and 844 transitions. Complement of second has 6 states. [2022-07-14 15:08:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-14 15:08:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-07-14 15:08:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2022-07-14 15:08:24,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 552 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-14 15:08:24,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 552 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 15:08:24,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 552 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-14 15:08:24,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,729 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 485 states and 844 transitions. [2022-07-14 15:08:24,748 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2022-07-14 15:08:24,752 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 485 states to 89 states and 146 transitions. [2022-07-14 15:08:24,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2022-07-14 15:08:24,753 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2022-07-14 15:08:24,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 146 transitions. [2022-07-14 15:08:24,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:24,754 INFO L369 hiAutomatonCegarLoop]: Abstraction has 89 states and 146 transitions. [2022-07-14 15:08:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 146 transitions. [2022-07-14 15:08:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2022-07-14 15:08:24,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.6857142857142857) internal successors, (118), 69 states have internal predecessors, (118), 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) [2022-07-14 15:08:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 118 transitions. [2022-07-14 15:08:24,789 INFO L392 hiAutomatonCegarLoop]: Abstraction has 70 states and 118 transitions. [2022-07-14 15:08:24,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 15:08:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 15:08:24,794 INFO L87 Difference]: Start difference. First operand 70 states and 118 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-14 15:08:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:24,861 INFO L93 Difference]: Finished difference Result 39 states and 57 transitions. [2022-07-14 15:08:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 15:08:24,863 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 57 transitions. [2022-07-14 15:08:24,865 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-14 15:08:24,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 57 transitions. [2022-07-14 15:08:24,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-07-14 15:08:24,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2022-07-14 15:08:24,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 57 transitions. [2022-07-14 15:08:24,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:08:24,868 INFO L369 hiAutomatonCegarLoop]: Abstraction has 39 states and 57 transitions. [2022-07-14 15:08:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 57 transitions. [2022-07-14 15:08:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2022-07-14 15:08:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 32 states have internal predecessors, (48), 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) [2022-07-14 15:08:24,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 48 transitions. [2022-07-14 15:08:24,874 INFO L392 hiAutomatonCegarLoop]: Abstraction has 33 states and 48 transitions. [2022-07-14 15:08:24,874 INFO L374 stractBuchiCegarLoop]: Abstraction has 33 states and 48 transitions. [2022-07-14 15:08:24,874 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 15:08:24,874 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 48 transitions. [2022-07-14 15:08:24,874 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-14 15:08:24,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:24,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:24,875 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:24,875 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:24,875 INFO L752 eck$LassoCheckResult]: Stem: 822#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 811#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 800#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 801#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 816#L81 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 825#L30-1 assume !(0 == base2flt_~m#1 % 4294967296); 820#L36-1 assume base2flt_~m#1 % 4294967296 < 16777216; 798#L48-3 [2022-07-14 15:08:24,875 INFO L754 eck$LassoCheckResult]: Loop: 798#L48-3 assume !false; 819#L39-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 797#L48-2 assume base2flt_~m#1 % 4294967296 < 16777216; 798#L48-3 [2022-07-14 15:08:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920711, now seen corresponding path program 1 times [2022-07-14 15:08:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668296871] [2022-07-14 15:08:24,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,900 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash 153118, now seen corresponding path program 1 times [2022-07-14 15:08:24,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377790956] [2022-07-14 15:08:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,918 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:24,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,924 INFO L85 PathProgramCache]: Analyzing trace with hash 876132888, now seen corresponding path program 1 times [2022-07-14 15:08:24,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931839927] [2022-07-14 15:08:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,947 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,965 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:24,995 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,995 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,995 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,995 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,995 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:24,995 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,996 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,996 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,996 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2022-07-14 15:08:24,996 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,996 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:25,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:25,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:25,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,085 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,085 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:25,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-14 15:08:25,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:25,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,129 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-14 15:08:25,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:25,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,159 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:25,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,162 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:25,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:25,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:25,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:25,162 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:25,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:25,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:25,162 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2022-07-14 15:08:25,162 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:25,162 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:25,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:25,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:25,223 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,224 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:25,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,228 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,235 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:08:25,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:25,242 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:25,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:25,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:25,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:25,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:25,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:25,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-14 15:08:25,255 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:25,257 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:25,257 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:25,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,259 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-14 15:08:25,261 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:25,261 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:25,261 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:25,261 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2022-07-14 15:08:25,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,278 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:08:25,350 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 15:08:25,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 48 transitions. cyclomatic complexity: 19 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-14 15:08:25,372 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 48 transitions. cyclomatic complexity: 19. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Result 69 states and 103 transitions. Complement of second has 5 states. [2022-07-14 15:08:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-14 15:08:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-14 15:08:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-07-14 15:08:25,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 66 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 15:08:25,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 66 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-14 15:08:25,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 66 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-14 15:08:25,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,375 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 103 transitions. [2022-07-14 15:08:25,376 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-14 15:08:25,376 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 57 states and 82 transitions. [2022-07-14 15:08:25,376 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2022-07-14 15:08:25,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2022-07-14 15:08:25,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2022-07-14 15:08:25,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:25,377 INFO L369 hiAutomatonCegarLoop]: Abstraction has 57 states and 82 transitions. [2022-07-14 15:08:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2022-07-14 15:08:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2022-07-14 15:08:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 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) [2022-07-14 15:08:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 52 transitions. [2022-07-14 15:08:25,380 INFO L392 hiAutomatonCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-14 15:08:25,380 INFO L374 stractBuchiCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-14 15:08:25,380 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 15:08:25,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 52 transitions. [2022-07-14 15:08:25,380 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-14 15:08:25,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:25,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:25,381 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:25,381 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:25,381 INFO L752 eck$LassoCheckResult]: Stem: 978#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 965#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 954#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 955#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 970#L81 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 981#L30-1 assume !(0 == base2flt_~m#1 % 4294967296); 975#L36-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 964#L58-5 [2022-07-14 15:08:25,381 INFO L754 eck$LassoCheckResult]: Loop: 964#L58-5 assume !false; 972#L59-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 962#L60-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 964#L58-5 [2022-07-14 15:08:25,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920737, now seen corresponding path program 1 times [2022-07-14 15:08:25,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:25,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594120197] [2022-07-14 15:08:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:25,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,391 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:25,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash 178877, now seen corresponding path program 1 times [2022-07-14 15:08:25,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:25,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024790757] [2022-07-14 15:08:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,405 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,410 INFO L85 PathProgramCache]: Analyzing trace with hash 876933213, now seen corresponding path program 1 times [2022-07-14 15:08:25,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:25,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759897107] [2022-07-14 15:08:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:25,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,432 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:25,476 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:25,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:25,476 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:25,476 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:25,476 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:25,477 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,478 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:25,479 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:25,479 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2022-07-14 15:08:25,479 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:25,479 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:25,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:25,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:25,563 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,563 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:25,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,568 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-14 15:08:25,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:25,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,652 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 15:08:25,652 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 15:08:25,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,660 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-14 15:08:25,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:25,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,711 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-14 15:08:25,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:25,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,754 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:25,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,760 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:25,760 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:25,760 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:25,760 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:25,761 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:25,761 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,761 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:25,761 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:25,761 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2022-07-14 15:08:25,761 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:25,761 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:25,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:25,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:25,842 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,850 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:25,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,871 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,879 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:08:25,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:25,885 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:25,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:25,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:25,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:25,887 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:25,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:25,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-14 15:08:25,903 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:08:25,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,930 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-14 15:08:25,933 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:08:25,939 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:25,939 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:25,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:25,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:25,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:25,940 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:25,940 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:25,955 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:25,957 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:25,957 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,959 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:25,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-14 15:08:25,962 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:25,962 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:25,962 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:25,962 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-14 15:08:25,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,990 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:26,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:26,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:26,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:26,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:08:26,043 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-14 15:08:26,043 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 20 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-07-14 15:08:26,064 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 20. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) Result 71 states and 106 transitions. Complement of second has 5 states. [2022-07-14 15:08:26,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-14 15:08:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-07-14 15:08:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-07-14 15:08:26,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 15:08:26,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-14 15:08:26,067 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-14 15:08:26,067 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,067 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 106 transitions. [2022-07-14 15:08:26,068 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-14 15:08:26,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 59 states and 85 transitions. [2022-07-14 15:08:26,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2022-07-14 15:08:26,069 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2022-07-14 15:08:26,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 85 transitions. [2022-07-14 15:08:26,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:26,069 INFO L369 hiAutomatonCegarLoop]: Abstraction has 59 states and 85 transitions. [2022-07-14 15:08:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 85 transitions. [2022-07-14 15:08:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2022-07-14 15:08:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.435897435897436) internal successors, (56), 38 states have internal predecessors, (56), 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) [2022-07-14 15:08:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2022-07-14 15:08:26,072 INFO L392 hiAutomatonCegarLoop]: Abstraction has 39 states and 56 transitions. [2022-07-14 15:08:26,072 INFO L374 stractBuchiCegarLoop]: Abstraction has 39 states and 56 transitions. [2022-07-14 15:08:26,072 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-14 15:08:26,072 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 56 transitions. [2022-07-14 15:08:26,072 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-14 15:08:26,072 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:26,072 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:26,073 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:26,073 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:26,073 INFO L752 eck$LassoCheckResult]: Stem: 1138#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 1123#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1111#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1112#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 1124#L81 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1141#L30-1 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1120#L80-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1115#L81-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret23#1;havoc main_#t~ret23#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1105#L30-2 assume !(0 == base2flt_~m#1 % 4294967296); 1106#L36-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1125#L58-8 [2022-07-14 15:08:26,073 INFO L754 eck$LassoCheckResult]: Loop: 1125#L58-8 assume !false; 1139#L59-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 1140#L60-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 1125#L58-8 [2022-07-14 15:08:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash 877203369, now seen corresponding path program 1 times [2022-07-14 15:08:26,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:26,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585683840] [2022-07-14 15:08:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:26,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,083 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:26,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,093 INFO L85 PathProgramCache]: Analyzing trace with hash 283142, now seen corresponding path program 1 times [2022-07-14 15:08:26,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:26,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512126984] [2022-07-14 15:08:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:26,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,098 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,103 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:26,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2110176930, now seen corresponding path program 1 times [2022-07-14 15:08:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:26,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182030235] [2022-07-14 15:08:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:26,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,114 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:26,147 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:26,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:26,147 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:26,147 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:26,147 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:26,147 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,147 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:26,147 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:26,148 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2022-07-14 15:08:26,148 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:26,148 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:26,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:26,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:26,221 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:26,221 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:26,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,223 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:26,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-14 15:08:26,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:26,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:26,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:26,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,248 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:26,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-14 15:08:26,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:26,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:26,276 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:26,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-07-14 15:08:26,279 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:26,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:26,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:26,280 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:26,280 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:26,280 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:26,280 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:26,280 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2022-07-14 15:08:26,280 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:26,280 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:26,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:26,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:26,359 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:26,360 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:26,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,361 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:26,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:08:26,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:26,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:26,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:26,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:26,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:26,374 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:26,374 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:26,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-14 15:08:26,391 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:26,394 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:26,394 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:26,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,396 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:26,406 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:26,406 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:26,406 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:26,406 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-14 15:08:26,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-14 15:08:26,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:26,432 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:26,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:26,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:26,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:26,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:26,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:08:26,492 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-14 15:08:26,492 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 56 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-07-14 15:08:26,497 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 56 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) Result 42 states and 60 transitions. Complement of second has 4 states. [2022-07-14 15:08:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-14 15:08:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-07-14 15:08:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2022-07-14 15:08:26,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 47 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-14 15:08:26,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 47 transitions. Stem has 13 letters. Loop has 3 letters. [2022-07-14 15:08:26,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,503 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 47 transitions. Stem has 10 letters. Loop has 6 letters. [2022-07-14 15:08:26,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,504 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 60 transitions. [2022-07-14 15:08:26,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 15:08:26,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 52 transitions. [2022-07-14 15:08:26,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2022-07-14 15:08:26,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2022-07-14 15:08:26,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 52 transitions. [2022-07-14 15:08:26,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:26,508 INFO L369 hiAutomatonCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-14 15:08:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 52 transitions. [2022-07-14 15:08:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-14 15:08:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 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) [2022-07-14 15:08:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 52 transitions. [2022-07-14 15:08:26,512 INFO L392 hiAutomatonCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-14 15:08:26,512 INFO L374 stractBuchiCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-14 15:08:26,512 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-14 15:08:26,512 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 52 transitions. [2022-07-14 15:08:26,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 15:08:26,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:26,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:26,513 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:26,514 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:26,514 INFO L752 eck$LassoCheckResult]: Stem: 1276#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 1262#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_#t~ret26#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1250#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1251#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 1265#L81 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1277#L30-1 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1259#L80-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1257#L81-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret23#1;havoc main_#t~ret23#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1244#L30-2 assume !(0 == base2flt_~m#1 % 4294967296); 1245#L36-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1266#L48-5 [2022-07-14 15:08:26,514 INFO L754 eck$LassoCheckResult]: Loop: 1266#L48-5 assume !false; 1279#L39-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1275#L48-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1266#L48-5 [2022-07-14 15:08:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash 877203343, now seen corresponding path program 1 times [2022-07-14 15:08:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:26,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195815067] [2022-07-14 15:08:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:26,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,531 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,540 INFO L85 PathProgramCache]: Analyzing trace with hash 257383, now seen corresponding path program 1 times [2022-07-14 15:08:26,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:26,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059819054] [2022-07-14 15:08:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:26,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,543 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:26,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2110977255, now seen corresponding path program 1 times [2022-07-14 15:08:26,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:26,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886908615] [2022-07-14 15:08:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:26,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,556 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:26,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:26,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-07-14 15:08:26,638 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:26,638 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:26,638 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:26,638 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:26,638 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:26,639 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,639 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:26,639 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:26,639 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2022-07-14 15:08:26,639 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:26,639 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:26,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:26,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:26,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:26,696 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:26,696 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:26,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,700 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:26,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-14 15:08:26,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:26,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:26,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-07-14 15:08:26,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,746 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:26,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-14 15:08:26,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:26,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:26,773 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:26,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-07-14 15:08:26,776 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:26,776 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:26,776 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:26,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:26,776 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:26,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:26,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:26,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2022-07-14 15:08:26,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:26,776 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:26,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:26,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:08:26,841 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:26,842 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:26,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,847 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:26,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:08:26,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:26,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:26,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:26,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:26,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:26,861 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:26,861 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:26,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-14 15:08:26,872 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:26,874 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:26,874 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:26,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,875 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:08:26,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-14 15:08:26,877 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:26,877 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:26,877 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:26,877 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2022-07-14 15:08:26,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-07-14 15:08:26,893 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:26,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:26,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:26,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:26,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:26,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:08:26,970 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 15:08:26,971 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 19 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-07-14 15:08:26,978 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 19. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) Result 40 states and 56 transitions. Complement of second has 4 states. [2022-07-14 15:08:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-14 15:08:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-07-14 15:08:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-07-14 15:08:26,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-14 15:08:26,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 13 letters. Loop has 3 letters. [2022-07-14 15:08:26,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 10 letters. Loop has 6 letters. [2022-07-14 15:08:26,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,982 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 56 transitions. [2022-07-14 15:08:26,983 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:08:26,983 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 0 states and 0 transitions. [2022-07-14 15:08:26,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 15:08:26,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 15:08:26,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 15:08:26,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:08:26,984 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:26,984 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:26,984 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:26,984 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-14 15:08:26,984 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-14 15:08:26,984 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:08:26,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-14 15:08:26,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 03:08:26 BoogieIcfgContainer [2022-07-14 15:08:26,999 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 15:08:27,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 15:08:27,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 15:08:27,000 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 15:08:27,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:08:23" (3/4) ... [2022-07-14 15:08:27,004 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-14 15:08:27,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 15:08:27,005 INFO L158 Benchmark]: Toolchain (without parser) took 4672.34ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 62.1MB in the beginning and 64.4MB in the end (delta: -2.3MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-07-14 15:08:27,006 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 48.3MB in the beginning and 48.2MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:08:27,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.17ms. Allocated memory is still 94.4MB. Free memory was 61.9MB in the beginning and 67.6MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 15:08:27,007 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.32ms. Allocated memory is still 94.4MB. Free memory was 67.6MB in the beginning and 64.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:08:27,007 INFO L158 Benchmark]: Boogie Preprocessor took 34.56ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 62.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-14 15:08:27,007 INFO L158 Benchmark]: RCFGBuilder took 722.17ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.6MB in the beginning and 83.3MB in the end (delta: -21.6MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-07-14 15:08:27,008 INFO L158 Benchmark]: BuchiAutomizer took 3577.63ms. Allocated memory is still 113.2MB. Free memory was 82.7MB in the beginning and 64.8MB in the end (delta: 18.0MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2022-07-14 15:08:27,008 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 113.2MB. Free memory was 64.8MB in the beginning and 64.4MB in the end (delta: 398.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:08:27,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory was 48.3MB in the beginning and 48.2MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.17ms. Allocated memory is still 94.4MB. Free memory was 61.9MB in the beginning and 67.6MB in the end (delta: -5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.32ms. Allocated memory is still 94.4MB. Free memory was 67.6MB in the beginning and 64.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.56ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 62.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 722.17ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.6MB in the beginning and 83.3MB in the end (delta: -21.6MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 3577.63ms. Allocated memory is still 113.2MB. Free memory was 82.7MB in the beginning and 64.8MB in the end (delta: 18.0MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 113.2MB. Free memory was 64.8MB in the beginning and 64.4MB in the end (delta: 398.2kB). 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 Your program was decomposed into 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 66 StatesRemovedByMinimization, 4 NontrivialMinimizations. 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 [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 476 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 471 mSDsluCounter, 534 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 482 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp56 ukn100 mio100 lsp100 div570 bol100 ite100 ukn100 eq132 hnf96 smp42 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-14 15:08:27,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:27,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE