./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_3a.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_3a.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 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 15:08:20,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 15:08:20,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 15:08:20,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 15:08:20,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 15:08:20,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 15:08:20,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 15:08:20,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 15:08:20,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 15:08:20,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 15:08:20,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 15:08:20,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 15:08:20,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 15:08:20,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 15:08:20,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 15:08:20,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 15:08:20,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 15:08:20,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 15:08:20,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 15:08:20,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 15:08:20,446 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 15:08:20,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 15:08:20,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 15:08:20,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 15:08:20,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 15:08:20,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 15:08:20,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 15:08:20,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 15:08:20,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 15:08:20,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 15:08:20,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 15:08:20,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 15:08:20,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 15:08:20,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 15:08:20,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 15:08:20,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 15:08:20,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 15:08:20,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 15:08:20,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 15:08:20,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 15:08:20,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 15:08:20,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 15:08:20,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-14 15:08:20,488 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 15:08:20,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 15:08:20,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 15:08:20,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 15:08:20,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 15:08:20,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 15:08:20,491 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 15:08:20,491 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 15:08:20,491 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 15:08:20,492 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 15:08:20,492 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 15:08:20,492 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 15:08:20,492 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 15:08:20,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 15:08:20,493 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 15:08:20,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 15:08:20,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 15:08:20,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 15:08:20,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 15:08:20,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 15:08:20,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 15:08:20,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 15:08:20,494 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 15:08:20,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 15:08:20,494 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 15:08:20,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 15:08:20,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 15:08:20,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 15:08:20,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 15:08:20,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 15:08:20,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 15:08:20,496 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 15:08:20,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2022-07-14 15:08:20,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 15:08:20,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 15:08:20,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 15:08:20,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 15:08:20,723 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 15:08:20,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-07-14 15:08:20,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca9c333f9/f61b5e6a1b254dc2b579631ff9f77cea/FLAG1895181bc [2022-07-14 15:08:21,113 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 15:08:21,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-07-14 15:08:21,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca9c333f9/f61b5e6a1b254dc2b579631ff9f77cea/FLAG1895181bc [2022-07-14 15:08:21,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca9c333f9/f61b5e6a1b254dc2b579631ff9f77cea [2022-07-14 15:08:21,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 15:08:21,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 15:08:21,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 15:08:21,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 15:08:21,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 15:08:21,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ab4bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21, skipping insertion in model container [2022-07-14 15:08:21,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 15:08:21,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 15:08:21,304 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_3a.c.cil.c[728,741] [2022-07-14 15:08:21,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:08:21,360 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 15:08:21,368 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_3a.c.cil.c[728,741] [2022-07-14 15:08:21,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:08:21,403 INFO L208 MainTranslator]: Completed translation [2022-07-14 15:08:21,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21 WrapperNode [2022-07-14 15:08:21,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 15:08:21,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 15:08:21,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 15:08:21,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 15:08:21,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,444 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 430 [2022-07-14 15:08:21,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 15:08:21,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 15:08:21,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 15:08:21,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 15:08:21,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 15:08:21,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 15:08:21,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 15:08:21,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 15:08:21,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (1/1) ... [2022-07-14 15:08:21,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:21,553 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 15:08:21,559 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 15:08:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 15:08:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 15:08:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 15:08:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 15:08:21,670 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 15:08:21,671 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 15:08:22,194 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 15:08:22,199 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 15:08:22,201 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-14 15:08:22,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:08:22 BoogieIcfgContainer [2022-07-14 15:08:22,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 15:08:22,205 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 15:08:22,205 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 15:08:22,207 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 15:08:22,208 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:08:22,208 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 03:08:21" (1/3) ... [2022-07-14 15:08:22,209 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@267ec426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:08:22, skipping insertion in model container [2022-07-14 15:08:22,209 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:08:22,209 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:21" (2/3) ... [2022-07-14 15:08:22,209 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@267ec426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:08:22, skipping insertion in model container [2022-07-14 15:08:22,210 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:08:22,210 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:08:22" (3/3) ... [2022-07-14 15:08:22,211 INFO L354 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2022-07-14 15:08:22,261 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 15:08:22,262 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 15:08:22,262 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 15:08:22,262 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 15:08:22,262 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 15:08:22,262 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 15:08:22,262 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 15:08:22,263 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 15:08:22,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 131 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 130 states have internal predecessors, (239), 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 15:08:22,302 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2022-07-14 15:08:22,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:22,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:22,308 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 15:08:22,308 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:22,308 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 15:08:22,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 131 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 130 states have internal predecessors, (239), 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 15:08:22,323 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2022-07-14 15:08:22,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:22,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:22,325 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 15:08:22,325 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:22,330 INFO L752 eck$LassoCheckResult]: Stem: 114#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(22, 2);call #Ultimate.allocInit(12, 3); 48#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_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#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_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#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; 87#L29true assume !(0 == base2flt_~m#1 % 4294967296); 111#L35true assume !(base2flt_~m#1 % 4294967296 < 16777216); 62#L57-2true [2022-07-14 15:08:22,330 INFO L754 eck$LassoCheckResult]: Loop: 62#L57-2true assume !false; 46#L58true assume base2flt_~m#1 % 4294967296 >= 33554432; 99#L59true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 62#L57-2true [2022-07-14 15:08:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2022-07-14 15:08:22,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:22,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198302462] [2022-07-14 15:08:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:22,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:22,472 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 15:08:22,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:22,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198302462] [2022-07-14 15:08:22,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198302462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:22,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:22,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 15:08:22,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322144795] [2022-07-14 15:08:22,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:22,481 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:22,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2022-07-14 15:08:22,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:22,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915132400] [2022-07-14 15:08:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:22,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:22,512 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:22,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:22,574 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:22,575 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:22,575 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:22,575 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:22,575 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:22,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:22,576 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:22,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2022-07-14 15:08:22,576 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:22,576 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:22,588 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 15:08:22,597 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 15:08:22,684 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:22,684 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:22,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,722 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 15:08:22,726 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 15:08:22,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:22,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:22,752 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 15:08:22,752 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 15:08:22,758 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 15:08:22,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,760 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 15:08:22,763 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 15:08:22,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:22,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:22,812 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 15:08:22,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,826 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 15:08:22,830 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 15:08:22,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:22,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:22,859 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:22,864 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 15:08:22,864 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:22,865 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:22,865 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:22,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:22,865 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:22,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,865 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:22,865 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:22,865 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2022-07-14 15:08:22,865 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:22,865 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:22,866 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 15:08:22,872 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 15:08:22,953 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:22,956 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:22,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,965 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 15:08:22,966 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 15:08:22,967 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 15:08:22,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:22,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:22,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:22,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:22,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:22,978 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:22,978 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:22,994 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:08:23,011 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 15:08:23,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,014 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 15:08:23,032 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 15:08:23,033 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 15:08:23,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:23,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:23,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:23,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:23,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:23,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:23,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:23,052 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:23,054 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:23,054 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:23,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,057 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 15:08:23,058 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 15:08:23,096 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:23,096 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:23,096 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:23,097 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 15:08:23,114 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 15:08:23,116 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:23,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:23,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:23,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:23,165 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 15:08:23,184 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 15:08:23,186 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 131 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 130 states have internal predecessors, (239), 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 15:08:23,242 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 131 states, 130 states have (on average 1.8384615384615384) internal successors, (239), 130 states have internal predecessors, (239), 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 396 states and 717 transitions. Complement of second has 6 states. [2022-07-14 15:08:23,244 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 15:08:23,247 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 15:08:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 476 transitions. [2022-07-14 15:08:23,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 476 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-14 15:08:23,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 476 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 15:08:23,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 476 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-14 15:08:23,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 396 states and 717 transitions. [2022-07-14 15:08:23,254 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2022-07-14 15:08:23,258 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 396 states to 127 states and 216 transitions. [2022-07-14 15:08:23,259 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2022-07-14 15:08:23,259 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 124 [2022-07-14 15:08:23,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 216 transitions. [2022-07-14 15:08:23,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:23,260 INFO L369 hiAutomatonCegarLoop]: Abstraction has 127 states and 216 transitions. [2022-07-14 15:08:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states and 216 transitions. [2022-07-14 15:08:23,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 108. [2022-07-14 15:08:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 107 states have internal predecessors, (188), 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 15:08:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 188 transitions. [2022-07-14 15:08:23,282 INFO L392 hiAutomatonCegarLoop]: Abstraction has 108 states and 188 transitions. [2022-07-14 15:08:23,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 15:08:23,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 15:08:23,285 INFO L87 Difference]: Start difference. First operand 108 states and 188 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 15:08:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:23,355 INFO L93 Difference]: Finished difference Result 65 states and 100 transitions. [2022-07-14 15:08:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 15:08:23,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 100 transitions. [2022-07-14 15:08:23,357 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-14 15:08:23,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 65 states and 100 transitions. [2022-07-14 15:08:23,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2022-07-14 15:08:23,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2022-07-14 15:08:23,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 100 transitions. [2022-07-14 15:08:23,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:08:23,358 INFO L369 hiAutomatonCegarLoop]: Abstraction has 65 states and 100 transitions. [2022-07-14 15:08:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 100 transitions. [2022-07-14 15:08:23,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2022-07-14 15:08:23,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 52 states have internal predecessors, (82), 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 15:08:23,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 82 transitions. [2022-07-14 15:08:23,361 INFO L392 hiAutomatonCegarLoop]: Abstraction has 53 states and 82 transitions. [2022-07-14 15:08:23,361 INFO L374 stractBuchiCegarLoop]: Abstraction has 53 states and 82 transitions. [2022-07-14 15:08:23,361 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 15:08:23,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 82 transitions. [2022-07-14 15:08:23,362 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-14 15:08:23,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:23,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:23,362 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:23,362 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:23,363 INFO L752 eck$LassoCheckResult]: Stem: 795#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(22, 2);call #Ultimate.allocInit(12, 3); 789#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_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#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_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#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; 774#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 775#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 753#L80 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 := 1, 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; 754#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 790#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 778#L47-3 [2022-07-14 15:08:23,363 INFO L754 eck$LassoCheckResult]: Loop: 778#L47-3 assume !false; 770#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 771#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 778#L47-3 [2022-07-14 15:08:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920711, now seen corresponding path program 1 times [2022-07-14 15:08:23,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530115064] [2022-07-14 15:08:23,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,372 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash 153118, now seen corresponding path program 1 times [2022-07-14 15:08:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483147224] [2022-07-14 15:08:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,385 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:23,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,399 INFO L85 PathProgramCache]: Analyzing trace with hash 876132888, now seen corresponding path program 1 times [2022-07-14 15:08:23,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013803368] [2022-07-14 15:08:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,407 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:23,433 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:23,433 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:23,433 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:23,433 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:23,434 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:23,434 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,434 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:23,434 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:23,434 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2022-07-14 15:08:23,434 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:23,434 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:23,435 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 15:08:23,438 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 15:08:23,482 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:23,482 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:23,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,483 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 15:08:23,529 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 15:08:23,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:23,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:23,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-07-14 15:08:23,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,563 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 15:08:23,563 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 15:08:23,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:23,565 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:23,591 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:23,613 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 15:08:23,614 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:23,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:23,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:23,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:23,614 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:23,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,614 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:23,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:23,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2022-07-14 15:08:23,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:23,614 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:23,615 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 15:08:23,620 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 15:08:23,683 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:23,683 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:23,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,685 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 15:08:23,686 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 15:08:23,688 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 15:08:23,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:23,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:23,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:23,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:23,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:23,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:23,704 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:23,723 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:23,725 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 15:08:23,728 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:23,728 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:23,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,729 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 15:08:23,730 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 15:08:23,732 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:23,732 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:23,732 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:23,732 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 15:08:23,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-07-14 15:08:23,749 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:23,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:23,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:23,807 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 15:08:23,807 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 15:08:23,808 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 53 states and 82 transitions. cyclomatic complexity: 35 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 15:08:23,826 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 53 states and 82 transitions. cyclomatic complexity: 35. 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 109 states and 171 transitions. Complement of second has 5 states. [2022-07-14 15:08:23,826 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 15:08:23,827 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 15:08:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2022-07-14 15:08:23,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 99 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 15:08:23,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 99 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-14 15:08:23,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 99 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-14 15:08:23,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,828 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 171 transitions. [2022-07-14 15:08:23,829 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2022-07-14 15:08:23,830 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 97 states and 150 transitions. [2022-07-14 15:08:23,830 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2022-07-14 15:08:23,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2022-07-14 15:08:23,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 150 transitions. [2022-07-14 15:08:23,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:23,830 INFO L369 hiAutomatonCegarLoop]: Abstraction has 97 states and 150 transitions. [2022-07-14 15:08:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 150 transitions. [2022-07-14 15:08:23,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 56. [2022-07-14 15:08:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 55 states have internal predecessors, (86), 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 15:08:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2022-07-14 15:08:23,833 INFO L392 hiAutomatonCegarLoop]: Abstraction has 56 states and 86 transitions. [2022-07-14 15:08:23,833 INFO L374 stractBuchiCegarLoop]: Abstraction has 56 states and 86 transitions. [2022-07-14 15:08:23,833 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 15:08:23,833 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 86 transitions. [2022-07-14 15:08:23,834 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-14 15:08:23,834 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:23,834 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:23,834 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:23,834 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:23,834 INFO L752 eck$LassoCheckResult]: Stem: 1011#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(22, 2);call #Ultimate.allocInit(12, 3); 1004#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_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#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_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#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; 988#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 989#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 966#L80 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 := 1, 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; 967#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1005#L35-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 972#L57-5 [2022-07-14 15:08:23,835 INFO L754 eck$LassoCheckResult]: Loop: 972#L57-5 assume !false; 968#L58-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 969#L59-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 972#L57-5 [2022-07-14 15:08:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920737, now seen corresponding path program 1 times [2022-07-14 15:08:23,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275660509] [2022-07-14 15:08:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,866 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 15:08:23,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:23,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275660509] [2022-07-14 15:08:23,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275660509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:23,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:23,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 15:08:23,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596560046] [2022-07-14 15:08:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:23,867 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash 178877, now seen corresponding path program 1 times [2022-07-14 15:08:23,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057286641] [2022-07-14 15:08:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,873 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:23,896 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:23,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:23,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:23,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:23,896 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:23,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:23,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:23,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2022-07-14 15:08:23,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:23,897 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:23,897 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 15:08:23,901 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 15:08:23,974 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:23,974 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:23,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,975 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 15:08:23,976 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 15:08:23,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:23,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-07-14 15:08:24,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,005 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 15:08:24,006 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 15:08:24,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:24,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,032 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:24,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-07-14 15:08:24,035 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,035 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,036 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,036 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,036 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:24,036 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,036 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,036 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,036 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2022-07-14 15:08:24,036 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,036 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,036 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 15:08:24,041 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 15:08:24,100 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,100 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:24,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,102 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 15:08:24,103 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 15:08:24,104 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 15:08:24,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:24,109 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:24,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:24,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:24,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:24,110 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:24,110 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:24,126 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:24,128 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:24,128 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:24,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,135 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 15:08:24,136 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 15:08:24,137 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:24,137 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:24,137 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:24,137 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 15:08:24,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-07-14 15:08:24,154 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:24,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,193 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 15:08:24,193 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 15:08:24,193 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 86 transitions. cyclomatic complexity: 36 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 15:08:24,211 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 86 transitions. cyclomatic complexity: 36. 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 111 states and 174 transitions. Complement of second has 5 states. [2022-07-14 15:08:24,212 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 15:08:24,212 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 15:08:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2022-07-14 15:08:24,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 98 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 15:08:24,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 98 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-14 15:08:24,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 98 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-14 15:08:24,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 174 transitions. [2022-07-14 15:08:24,214 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2022-07-14 15:08:24,215 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 99 states and 153 transitions. [2022-07-14 15:08:24,215 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2022-07-14 15:08:24,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 93 [2022-07-14 15:08:24,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 153 transitions. [2022-07-14 15:08:24,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:24,216 INFO L369 hiAutomatonCegarLoop]: Abstraction has 99 states and 153 transitions. [2022-07-14 15:08:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 153 transitions. [2022-07-14 15:08:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 59. [2022-07-14 15:08:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 58 states have internal predecessors, (90), 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 15:08:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 90 transitions. [2022-07-14 15:08:24,218 INFO L392 hiAutomatonCegarLoop]: Abstraction has 59 states and 90 transitions. [2022-07-14 15:08:24,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 15:08:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 15:08:24,219 INFO L87 Difference]: Start difference. First operand 59 states and 90 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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 15:08:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:24,286 INFO L93 Difference]: Finished difference Result 61 states and 87 transitions. [2022-07-14 15:08:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 15:08:24,287 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2022-07-14 15:08:24,287 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-14 15:08:24,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 61 states and 87 transitions. [2022-07-14 15:08:24,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2022-07-14 15:08:24,288 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-07-14 15:08:24,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 87 transitions. [2022-07-14 15:08:24,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:24,288 INFO L369 hiAutomatonCegarLoop]: Abstraction has 61 states and 87 transitions. [2022-07-14 15:08:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 87 transitions. [2022-07-14 15:08:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2022-07-14 15:08:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 53 states have (on average 1.490566037735849) internal successors, (79), 52 states have internal predecessors, (79), 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 15:08:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2022-07-14 15:08:24,290 INFO L392 hiAutomatonCegarLoop]: Abstraction has 53 states and 79 transitions. [2022-07-14 15:08:24,290 INFO L374 stractBuchiCegarLoop]: Abstraction has 53 states and 79 transitions. [2022-07-14 15:08:24,291 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-14 15:08:24,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 79 transitions. [2022-07-14 15:08:24,291 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-14 15:08:24,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:24,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:24,292 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:24,292 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:24,292 INFO L752 eck$LassoCheckResult]: Stem: 1336#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(22, 2);call #Ultimate.allocInit(12, 3); 1307#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_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#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_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#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; 1308#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1340#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1312#L80 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 := 1, 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; 1313#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1315#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1316#L47-3 assume !false; 1337#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1314#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1326#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~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_~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; 1333#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1330#L35-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1331#L57-8 [2022-07-14 15:08:24,292 INFO L754 eck$LassoCheckResult]: Loop: 1331#L57-8 assume !false; 1323#L58-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 1324#L59-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 1331#L57-8 [2022-07-14 15:08:24,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,293 INFO L85 PathProgramCache]: Analyzing trace with hash 359266186, now seen corresponding path program 1 times [2022-07-14 15:08:24,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802375472] [2022-07-14 15:08:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,309 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 15:08:24,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:24,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802375472] [2022-07-14 15:08:24,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802375472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:24,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:24,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 15:08:24,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263221612] [2022-07-14 15:08:24,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:24,310 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash 283142, now seen corresponding path program 1 times [2022-07-14 15:08:24,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046722221] [2022-07-14 15:08:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,315 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:24,337 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,338 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,338 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,338 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,338 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:24,338 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,338 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,338 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,338 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2022-07-14 15:08:24,339 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,339 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,339 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 15:08:24,343 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 15:08:24,401 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,402 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:24,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,403 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 15:08:24,404 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 15:08:24,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:24,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-07-14 15:08:24,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,443 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 15:08:24,444 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 15:08:24,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:24,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,478 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:24,481 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 15:08:24,481 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,481 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,481 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,482 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,482 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:24,482 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,482 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,482 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,482 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2022-07-14 15:08:24,482 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,482 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,482 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 15:08:24,487 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 15:08:24,539 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,539 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:24,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,541 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 15:08:24,542 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 15:08:24,543 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 15:08:24,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:24,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:24,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:24,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:24,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:24,550 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:24,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:24,551 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:24,553 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:24,553 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:24,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,555 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 15:08:24,557 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 15:08:24,557 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:24,558 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:24,558 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:24,558 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 15:08:24,577 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 15:08:24,578 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,624 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 15:08:24,624 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 15:08:24,625 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 53 states and 79 transitions. cyclomatic complexity: 31 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 15:08:24,644 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 53 states and 79 transitions. cyclomatic complexity: 31. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 88 states and 133 transitions. Complement of second has 5 states. [2022-07-14 15:08:24,644 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 15:08:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 15:08:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2022-07-14 15:08:24,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 13 letters. Loop has 3 letters. [2022-07-14 15:08:24,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 16 letters. Loop has 3 letters. [2022-07-14 15:08:24,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 13 letters. Loop has 6 letters. [2022-07-14 15:08:24,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 133 transitions. [2022-07-14 15:08:24,646 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-14 15:08:24,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 76 states and 112 transitions. [2022-07-14 15:08:24,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2022-07-14 15:08:24,675 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 15:08:24,678 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2022-07-14 15:08:24,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 112 transitions. [2022-07-14 15:08:24,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:24,678 INFO L369 hiAutomatonCegarLoop]: Abstraction has 76 states and 112 transitions. [2022-07-14 15:08:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states and 112 transitions. [2022-07-14 15:08:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2022-07-14 15:08:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 55 states have internal predecessors, (83), 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 15:08:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 83 transitions. [2022-07-14 15:08:24,692 INFO L392 hiAutomatonCegarLoop]: Abstraction has 56 states and 83 transitions. [2022-07-14 15:08:24,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:24,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 15:08:24,694 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 15:08:24,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 15:08:24,710 INFO L87 Difference]: Start difference. First operand 56 states and 83 transitions. 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 15:08:24,713 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 15:08:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:24,753 INFO L93 Difference]: Finished difference Result 58 states and 84 transitions. [2022-07-14 15:08:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 15:08:24,754 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 84 transitions. [2022-07-14 15:08:24,754 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-14 15:08:24,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 57 states and 83 transitions. [2022-07-14 15:08:24,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2022-07-14 15:08:24,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2022-07-14 15:08:24,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 83 transitions. [2022-07-14 15:08:24,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:24,755 INFO L369 hiAutomatonCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-07-14 15:08:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 83 transitions. [2022-07-14 15:08:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-07-14 15:08:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.4642857142857142) internal successors, (82), 55 states have internal predecessors, (82), 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 15:08:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2022-07-14 15:08:24,756 INFO L392 hiAutomatonCegarLoop]: Abstraction has 56 states and 82 transitions. [2022-07-14 15:08:24,756 INFO L374 stractBuchiCegarLoop]: Abstraction has 56 states and 82 transitions. [2022-07-14 15:08:24,756 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-14 15:08:24,756 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 82 transitions. [2022-07-14 15:08:24,757 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-14 15:08:24,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:24,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:24,757 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:24,757 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:24,757 INFO L752 eck$LassoCheckResult]: Stem: 1660#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(22, 2);call #Ultimate.allocInit(12, 3); 1628#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_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#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_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#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; 1629#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1664#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1634#L80 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 := 1, 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; 1635#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1637#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1638#L47-3 assume !false; 1662#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1650#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1651#L47-3 assume !false; 1661#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1636#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1653#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~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_~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; 1657#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1654#L35-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1656#L47-5 [2022-07-14 15:08:24,757 INFO L754 eck$LassoCheckResult]: Loop: 1656#L47-5 assume !false; 1659#L38-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1667#L47-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1656#L47-5 [2022-07-14 15:08:24,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1105339009, now seen corresponding path program 1 times [2022-07-14 15:08:24,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531472457] [2022-07-14 15:08:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:08:24,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:24,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531472457] [2022-07-14 15:08:24,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531472457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 15:08:24,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234173300] [2022-07-14 15:08:24,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 15:08:24,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,780 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 15:08:24,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-14 15:08:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:08:24,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 15:08:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:08:24,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234173300] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 15:08:24,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 15:08:24,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-14 15:08:24,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294774964] [2022-07-14 15:08:24,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 15:08:24,867 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:24,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,867 INFO L85 PathProgramCache]: Analyzing trace with hash 257383, now seen corresponding path program 1 times [2022-07-14 15:08:24,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034107366] [2022-07-14 15:08:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,870 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:24,888 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,888 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:24,888 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,888 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,888 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2022-07-14 15:08:24,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,889 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 15:08:24,893 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 15:08:24,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,933 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:24,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,934 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 15:08:24,935 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 15:08:24,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:24,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:24,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,958 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 15:08:24,960 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 15:08:24,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:24,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,990 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:24,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:24,993 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,993 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,993 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,993 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,993 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:24,993 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,993 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,993 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,993 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2022-07-14 15:08:24,993 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,993 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,994 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 15:08:24,998 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 15:08:25,053 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,054 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:25,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,056 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 15:08:25,072 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 15:08:25,073 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 15:08:25,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:25,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:25,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:25,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:25,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:25,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:25,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:25,083 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:25,085 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:25,085 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [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 15:08:25,087 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 15:08:25,097 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:25,097 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:25,098 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:25,098 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 15:08:25,107 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 15:08:25,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,115 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,181 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 15:08:25,183 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 15:08:25,183 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 82 transitions. cyclomatic complexity: 31 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 15:08:25,200 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 82 transitions. cyclomatic complexity: 31. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 92 states and 137 transitions. Complement of second has 5 states. [2022-07-14 15:08:25,201 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 15:08:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 15:08:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2022-07-14 15:08:25,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 92 transitions. Stem has 16 letters. Loop has 3 letters. [2022-07-14 15:08:25,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 92 transitions. Stem has 19 letters. Loop has 3 letters. [2022-07-14 15:08:25,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 92 transitions. Stem has 16 letters. Loop has 6 letters. [2022-07-14 15:08:25,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 137 transitions. [2022-07-14 15:08:25,208 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-14 15:08:25,208 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 80 states and 116 transitions. [2022-07-14 15:08:25,209 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2022-07-14 15:08:25,209 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2022-07-14 15:08:25,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 116 transitions. [2022-07-14 15:08:25,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:25,209 INFO L369 hiAutomatonCegarLoop]: Abstraction has 80 states and 116 transitions. [2022-07-14 15:08:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 116 transitions. [2022-07-14 15:08:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 59. [2022-07-14 15:08:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 58 states have internal predecessors, (86), 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 15:08:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2022-07-14 15:08:25,212 INFO L392 hiAutomatonCegarLoop]: Abstraction has 59 states and 86 transitions. [2022-07-14 15:08:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 15:08:25,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 15:08:25,213 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 15:08:25,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:25,280 INFO L93 Difference]: Finished difference Result 113 states and 158 transitions. [2022-07-14 15:08:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 15:08:25,280 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 158 transitions. [2022-07-14 15:08:25,281 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-14 15:08:25,282 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 107 states and 152 transitions. [2022-07-14 15:08:25,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2022-07-14 15:08:25,282 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2022-07-14 15:08:25,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 152 transitions. [2022-07-14 15:08:25,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:25,282 INFO L369 hiAutomatonCegarLoop]: Abstraction has 107 states and 152 transitions. [2022-07-14 15:08:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 152 transitions. [2022-07-14 15:08:25,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 74. [2022-07-14 15:08:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 73 states have internal predecessors, (108), 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 15:08:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-07-14 15:08:25,284 INFO L392 hiAutomatonCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-07-14 15:08:25,284 INFO L374 stractBuchiCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-07-14 15:08:25,284 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-14 15:08:25,284 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 108 transitions. [2022-07-14 15:08:25,285 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-14 15:08:25,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:25,285 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:25,286 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:25,286 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:25,286 INFO L752 eck$LassoCheckResult]: Stem: 2154#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(22, 2);call #Ultimate.allocInit(12, 3); 2119#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_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#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_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#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; 2120#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2156#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 2126#L80 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 := 1, 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; 2127#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 2128#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 2129#L47-3 assume !false; 2163#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 2172#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2132#L73-1 assume 0 == base2flt_~m#1 || 0 == ~bitwiseComplement(16777216);base2flt_~m#1 := 0; 2109#L76-15 assume !((1 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))) || ((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 1 == 16777216 * (128 + base2flt_~e#1))); 2113#L77-9 assume !(0 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))); 2114#L77-11 assume !((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 0 == 16777216 * (128 + base2flt_~e#1)); 2161#L77-13 assume !(base2flt_~m#1 >= 0 && 16777216 * (128 + base2flt_~e#1) >= 0);base2flt_~res~0#1 := base2flt_#t~nondet5#1;havoc base2flt_#t~nondet5#1; 2124#L77-15 base2flt_~__retres4~0#1 := base2flt_~res~0#1; 2125#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 2140#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~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_~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; 2146#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2106#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 2107#L80-2 main_#t~ret24#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret24#1;havoc main_#t~ret24#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; 2155#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 2121#L35-3 assume base2flt_~m#1 % 4294967296 < 16777216; 2122#L47-7 [2022-07-14 15:08:25,286 INFO L754 eck$LassoCheckResult]: Loop: 2122#L47-7 assume !false; 2111#L38-3 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 2112#L47-6 assume base2flt_~m#1 % 4294967296 < 16777216; 2122#L47-7 [2022-07-14 15:08:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash 488953666, now seen corresponding path program 1 times [2022-07-14 15:08:25,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:25,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444661562] [2022-07-14 15:08:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:25,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,325 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 15:08:25,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:25,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444661562] [2022-07-14 15:08:25,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444661562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:25,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:25,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 15:08:25,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073794212] [2022-07-14 15:08:25,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:25,327 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,327 INFO L85 PathProgramCache]: Analyzing trace with hash 361648, now seen corresponding path program 1 times [2022-07-14 15:08:25,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:25,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525034010] [2022-07-14 15:08:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:25,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,330 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:25,348 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:25,348 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:25,348 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:25,349 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:25,349 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:25,349 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,349 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:25,349 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:25,349 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2022-07-14 15:08:25,349 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:25,349 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:25,350 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 15:08:25,353 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 15:08:25,395 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,396 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:25,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,397 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 15:08:25,398 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 15:08:25,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:25,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,438 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 15:08:25,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,440 INFO L229 MonitoredProcess]: Starting monitored process 26 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 15:08:25,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-14 15:08:25,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:25,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,467 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:25,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,472 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:25,472 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:25,472 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:25,472 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:25,472 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:25,472 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,472 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:25,472 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:25,472 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2022-07-14 15:08:25,473 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:25,473 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:25,473 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 15:08:25,478 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 15:08:25,531 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,531 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:25,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,533 INFO L229 MonitoredProcess]: Starting monitored process 27 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 15:08:25,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-14 15:08:25,547 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 15:08:25,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:25,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:25,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:25,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:25,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:25,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:25,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:25,575 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:25,577 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:25,577 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:25,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,578 INFO L229 MonitoredProcess]: Starting monitored process 28 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 15:08:25,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-14 15:08:25,598 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:25,599 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:25,599 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:25,599 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 15:08:25,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,617 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,724 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 15:08:25,725 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 15:08:25,725 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 108 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 15:08:25,742 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 108 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 78 states and 112 transitions. Complement of second has 4 states. [2022-07-14 15:08:25,743 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 15:08:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 15:08:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2022-07-14 15:08:25,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 23 letters. Loop has 3 letters. [2022-07-14 15:08:25,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 26 letters. Loop has 3 letters. [2022-07-14 15:08:25,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 23 letters. Loop has 6 letters. [2022-07-14 15:08:25,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,744 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 112 transitions. [2022-07-14 15:08:25,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 15:08:25,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 71 states and 104 transitions. [2022-07-14 15:08:25,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2022-07-14 15:08:25,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2022-07-14 15:08:25,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 104 transitions. [2022-07-14 15:08:25,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:25,745 INFO L369 hiAutomatonCegarLoop]: Abstraction has 71 states and 104 transitions. [2022-07-14 15:08:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 104 transitions. [2022-07-14 15:08:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-07-14 15:08:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 70 states have internal predecessors, (104), 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 15:08:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2022-07-14 15:08:25,746 INFO L392 hiAutomatonCegarLoop]: Abstraction has 71 states and 104 transitions. [2022-07-14 15:08:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 15:08:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 15:08:25,747 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 15:08:25,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:25,810 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2022-07-14 15:08:25,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 15:08:25,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 129 transitions. [2022-07-14 15:08:25,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 15:08:25,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 91 states and 129 transitions. [2022-07-14 15:08:25,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-07-14 15:08:25,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-07-14 15:08:25,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 129 transitions. [2022-07-14 15:08:25,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:25,812 INFO L369 hiAutomatonCegarLoop]: Abstraction has 91 states and 129 transitions. [2022-07-14 15:08:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 129 transitions. [2022-07-14 15:08:25,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2022-07-14 15:08:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 75 states have internal predecessors, (110), 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 15:08:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 110 transitions. [2022-07-14 15:08:25,813 INFO L392 hiAutomatonCegarLoop]: Abstraction has 76 states and 110 transitions. [2022-07-14 15:08:25,813 INFO L374 stractBuchiCegarLoop]: Abstraction has 76 states and 110 transitions. [2022-07-14 15:08:25,814 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-14 15:08:25,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states and 110 transitions. [2022-07-14 15:08:25,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 15:08:25,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:25,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:25,815 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:25,815 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:25,815 INFO L752 eck$LassoCheckResult]: Stem: 2566#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(22, 2);call #Ultimate.allocInit(12, 3); 2532#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_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#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_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#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; 2533#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2568#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 2536#L80 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 := 1, 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; 2537#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 2540#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 2541#L47-3 assume !false; 2576#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 2585#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2586#L73-1 assume 0 == base2flt_~m#1 || 0 == ~bitwiseComplement(16777216);base2flt_~m#1 := 0; 2596#L76-15 assume !((1 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))) || ((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 1 == 16777216 * (128 + base2flt_~e#1))); 2595#L77-9 assume !(0 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))); 2594#L77-11 assume !((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 0 == 16777216 * (128 + base2flt_~e#1)); 2575#L77-13 assume base2flt_~m#1 >= 0 && 16777216 * (128 + base2flt_~e#1) >= 0;abs_77 := (if base2flt_~m#1 < 16777216 * (128 + base2flt_~e#1) then 16777216 * (128 + base2flt_~e#1) else base2flt_~m#1);assume base2flt_~m#1 >= 0 && 16777216 * (128 + base2flt_~e#1) >= 0;assume base2flt_~res~0#1 >= abs_77; 2538#L77-15 base2flt_~__retres4~0#1 := base2flt_~res~0#1; 2539#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 2554#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~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_~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; 2558#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2524#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 2525#L80-2 main_#t~ret24#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret24#1;havoc main_#t~ret24#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; 2567#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 2534#L35-3 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2535#L57-11 [2022-07-14 15:08:25,815 INFO L754 eck$LassoCheckResult]: Loop: 2535#L57-11 assume !false; 2542#L58-3 assume base2flt_~m#1 % 4294967296 >= 33554432; 2543#L59-3 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 2535#L57-11 [2022-07-14 15:08:25,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,815 INFO L85 PathProgramCache]: Analyzing trace with hash -191104678, now seen corresponding path program 1 times [2022-07-14 15:08:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:25,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450118195] [2022-07-14 15:08:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:25,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,849 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 15:08:25,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:25,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450118195] [2022-07-14 15:08:25,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450118195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:25,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:25,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 15:08:25,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933573001] [2022-07-14 15:08:25,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:25,850 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash 387407, now seen corresponding path program 1 times [2022-07-14 15:08:25,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:25,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226437432] [2022-07-14 15:08:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:25,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,854 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:25,882 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:25,882 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:25,882 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:25,882 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:25,882 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:25,882 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,882 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:25,883 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:25,883 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2022-07-14 15:08:25,883 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:25,883 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:25,883 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 15:08:25,893 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 15:08:25,942 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,942 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:25,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,943 INFO L229 MonitoredProcess]: Starting monitored process 29 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 15:08:25,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-14 15:08:25,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:25,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:25,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,000 INFO L229 MonitoredProcess]: Starting monitored process 30 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 15:08:26,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-14 15:08:26,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:26,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:26,039 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:26,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:26,045 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:26,045 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:26,045 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:26,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:26,045 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:26,045 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,045 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:26,045 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:26,045 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2022-07-14 15:08:26,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:26,045 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:26,046 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 15:08:26,054 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 15:08:26,127 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:26,127 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:26,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,128 INFO L229 MonitoredProcess]: Starting monitored process 31 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 15:08:26,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-14 15:08:26,131 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 15:08:26,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:26,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:26,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:26,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:26,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:26,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:26,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:26,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:26,139 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:26,139 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:26,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:26,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:26,140 INFO L229 MonitoredProcess]: Starting monitored process 32 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 15:08:26,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-14 15:08:26,142 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:26,142 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:26,142 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:26,142 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 15:08:26,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:26,159 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:26,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:26,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:26,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:26,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:26,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:26,233 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 15:08:26,234 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 15:08:26,234 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 110 transitions. cyclomatic complexity: 38 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 15:08:26,237 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 110 transitions. cyclomatic complexity: 38. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 79 states and 114 transitions. Complement of second has 4 states. [2022-07-14 15:08:26,237 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 15:08:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 15:08:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2022-07-14 15:08:26,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 69 transitions. Stem has 23 letters. Loop has 3 letters. [2022-07-14 15:08:26,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 69 transitions. Stem has 26 letters. Loop has 3 letters. [2022-07-14 15:08:26,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 69 transitions. Stem has 23 letters. Loop has 6 letters. [2022-07-14 15:08:26,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:26,238 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 114 transitions. [2022-07-14 15:08:26,238 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:08:26,238 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 0 states and 0 transitions. [2022-07-14 15:08:26,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 15:08:26,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 15:08:26,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 15:08:26,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:08:26,239 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:26,239 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 15:08:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 15:08:26,239 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 15:08:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:26,239 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-14 15:08:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 15:08:26,240 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-14 15:08:26,240 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:08:26,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 15:08:26,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 15:08:26,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 15:08:26,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 15:08:26,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:08:26,240 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:26,240 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:26,240 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:26,240 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-14 15:08:26,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-14 15:08:26,240 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:08:26,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-14 15:08:26,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 03:08:26 BoogieIcfgContainer [2022-07-14 15:08:26,244 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 15:08:26,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 15:08:26,245 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 15:08:26,245 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 15:08:26,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:08:22" (3/4) ... [2022-07-14 15:08:26,247 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-14 15:08:26,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 15:08:26,247 INFO L158 Benchmark]: Toolchain (without parser) took 5113.06ms. Allocated memory was 102.8MB in the beginning and 169.9MB in the end (delta: 67.1MB). Free memory was 73.8MB in the beginning and 99.1MB in the end (delta: -25.3MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2022-07-14 15:08:26,247 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:08:26,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.42ms. Allocated memory is still 102.8MB. Free memory was 73.5MB in the beginning and 75.5MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 15:08:26,247 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.36ms. Allocated memory is still 102.8MB. Free memory was 75.5MB in the beginning and 72.4MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:08:26,248 INFO L158 Benchmark]: Boogie Preprocessor took 25.11ms. Allocated memory is still 102.8MB. Free memory was 72.4MB in the beginning and 69.9MB in the end (delta: 2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-14 15:08:26,248 INFO L158 Benchmark]: RCFGBuilder took 732.60ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 69.9MB in the beginning and 106.7MB in the end (delta: -36.8MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2022-07-14 15:08:26,248 INFO L158 Benchmark]: BuchiAutomizer took 4039.75ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 106.1MB in the beginning and 99.1MB in the end (delta: 7.0MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2022-07-14 15:08:26,248 INFO L158 Benchmark]: Witness Printer took 1.95ms. Allocated memory is still 169.9MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:08:26,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.42ms. Allocated memory is still 102.8MB. Free memory was 73.5MB in the beginning and 75.5MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.36ms. Allocated memory is still 102.8MB. Free memory was 75.5MB in the beginning and 72.4MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.11ms. Allocated memory is still 102.8MB. Free memory was 72.4MB in the beginning and 69.9MB in the end (delta: 2.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 732.60ms. Allocated memory was 102.8MB in the beginning and 140.5MB in the end (delta: 37.7MB). Free memory was 69.9MB in the beginning and 106.7MB in the end (delta: -36.8MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 4039.75ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 106.1MB in the beginning and 99.1MB in the end (delta: 7.0MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * Witness Printer took 1.95ms. Allocated memory is still 169.9MB. Free memory is still 99.1MB. 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 13 terminating modules (6 trivial, 7 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. 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. 6 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 210 StatesRemovedByMinimization, 10 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 [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 882 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 875 mSDsluCounter, 1369 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 318 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 402 IncrementalHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 1051 mSDtfsCounter, 402 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp56 ukn100 mio100 lsp100 div561 bol100 ite100 ukn100 eq132 hnf96 smp42 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s 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 15:08:26,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:26,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:26,686 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