./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 15:08:19,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 15:08:19,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 15:08:19,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 15:08:19,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 15:08:19,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 15:08:19,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 15:08:19,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 15:08:19,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 15:08:19,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 15:08:19,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 15:08:19,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 15:08:19,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 15:08:19,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 15:08:20,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 15:08:20,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 15:08:20,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 15:08:20,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 15:08:20,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 15:08:20,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 15:08:20,010 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 15:08:20,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 15:08:20,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 15:08:20,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 15:08:20,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 15:08:20,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 15:08:20,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 15:08:20,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 15:08:20,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 15:08:20,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 15:08:20,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 15:08:20,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 15:08:20,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 15:08:20,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 15:08:20,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 15:08:20,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 15:08:20,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 15:08:20,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 15:08:20,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 15:08:20,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 15:08:20,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 15:08:20,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 15:08:20,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-14 15:08:20,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 15:08:20,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 15:08:20,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 15:08:20,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 15:08:20,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 15:08:20,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 15:08:20,047 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 15:08:20,047 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 15:08:20,047 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 15:08:20,047 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 15:08:20,047 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 15:08:20,047 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 15:08:20,047 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 15:08:20,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 15:08:20,048 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 15:08:20,048 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 15:08:20,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 15:08:20,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 15:08:20,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 15:08:20,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 15:08:20,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 15:08:20,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 15:08:20,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 15:08:20,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 15:08:20,049 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 15:08:20,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 15:08:20,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 15:08:20,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 15:08:20,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 15:08:20,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 15:08:20,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 15:08:20,050 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 15:08:20,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2022-07-14 15:08:20,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 15:08:20,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 15:08:20,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 15:08:20,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 15:08:20,228 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 15:08:20,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-07-14 15:08:20,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d913f673/2c55c9d836944de7858453a3b88c7a08/FLAG344379404 [2022-07-14 15:08:20,643 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 15:08:20,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-07-14 15:08:20,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d913f673/2c55c9d836944de7858453a3b88c7a08/FLAG344379404 [2022-07-14 15:08:20,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d913f673/2c55c9d836944de7858453a3b88c7a08 [2022-07-14 15:08:20,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 15:08:20,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 15:08:20,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 15:08:20,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 15:08:20,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 15:08:20,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:20,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187a6180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20, skipping insertion in model container [2022-07-14 15:08:20,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:20,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 15:08:20,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 15:08:20,827 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_2a.c.cil.c[728,741] [2022-07-14 15:08:20,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:08:20,876 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 15:08:20,883 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_2a.c.cil.c[728,741] [2022-07-14 15:08:20,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:08:20,920 INFO L208 MainTranslator]: Completed translation [2022-07-14 15:08:20,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20 WrapperNode [2022-07-14 15:08:20,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 15:08:20,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 15:08:20,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 15:08:20,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 15:08:20,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:20,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:20,969 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 430 [2022-07-14 15:08:20,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 15:08:20,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 15:08:20,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 15:08:20,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 15:08:20,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:20,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:20,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:20,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:21,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:21,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:21,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:21,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 15:08:21,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 15:08:21,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 15:08:21,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 15:08:21,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (1/1) ... [2022-07-14 15:08:21,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:21,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:21,057 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 15:08:21,063 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 15:08:21,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 15:08:21,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 15:08:21,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 15:08:21,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 15:08:21,138 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 15:08:21,139 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 15:08:21,540 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 15:08:21,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 15:08:21,545 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-14 15:08:21,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:08:21 BoogieIcfgContainer [2022-07-14 15:08:21,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 15:08:21,548 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 15:08:21,548 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 15:08:21,550 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 15:08:21,551 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:08:21,551 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 03:08:20" (1/3) ... [2022-07-14 15:08:21,553 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@39e2cb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:08:21, skipping insertion in model container [2022-07-14 15:08:21,554 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:08:21,554 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:08:20" (2/3) ... [2022-07-14 15:08:21,554 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@39e2cb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:08:21, skipping insertion in model container [2022-07-14 15:08:21,554 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:08:21,554 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:08:21" (3/3) ... [2022-07-14 15:08:21,555 INFO L354 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2022-07-14 15:08:21,595 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 15:08:21,596 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 15:08:21,596 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 15:08:21,596 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 15:08:21,596 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 15:08:21,596 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 15:08:21,596 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 15:08:21,597 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 15:08:21,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.83206106870229) internal successors, (240), 131 states have internal predecessors, (240), 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 15:08:21,631 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2022-07-14 15:08:21,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:21,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:21,637 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 15:08:21,637 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:21,637 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 15:08:21,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.83206106870229) internal successors, (240), 131 states have internal predecessors, (240), 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 15:08:21,646 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2022-07-14 15:08:21,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:21,647 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:21,647 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 15:08:21,647 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:21,652 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); 45#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_~sa~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_~sa~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); 60#L57-2true [2022-07-14 15:08:21,653 INFO L754 eck$LassoCheckResult]: Loop: 60#L57-2true assume !false; 43#L58true assume base2flt_~m#1 % 4294967296 >= 33554432; 100#L59true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 60#L57-2true [2022-07-14 15:08:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2022-07-14 15:08:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:21,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734144232] [2022-07-14 15:08:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:21,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:21,811 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 15:08:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:21,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734144232] [2022-07-14 15:08:21,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734144232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:21,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:21,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 15:08:21,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783486628] [2022-07-14 15:08:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:21,820 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:21,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:21,823 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2022-07-14 15:08:21,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:21,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777494549] [2022-07-14 15:08:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:21,844 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:21,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:21,908 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:21,908 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:21,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:21,910 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:21,910 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:21,910 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:21,910 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:21,910 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:21,910 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2022-07-14 15:08:21,911 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:21,911 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:21,923 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 15:08:21,933 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 15:08:22,034 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:22,035 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:22,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,047 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 15:08:22,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:22,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:22,083 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 15:08:22,115 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 15:08:22,115 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 15:08:22,121 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 15:08:22,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,123 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 15:08:22,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:22,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:22,139 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 15:08:22,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-07-14 15:08:22,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,157 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 15:08:22,157 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 15:08:22,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:22,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:22,184 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:22,187 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 15:08:22,187 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:22,187 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:22,187 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:22,187 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:22,187 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:22,188 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,188 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:22,188 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:22,188 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2022-07-14 15:08:22,188 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:22,188 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:22,189 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 15:08:22,200 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 15:08:22,280 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:22,284 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:22,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,290 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 15:08:22,291 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 15:08:22,293 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 15:08:22,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:22,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:22,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:22,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:22,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:22,302 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:22,302 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:22,319 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:08:22,339 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 15:08:22,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,342 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 15:08:22,343 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 15:08:22,344 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 15:08:22,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:22,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:22,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:22,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:22,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:22,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:22,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:22,366 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:22,386 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:22,386 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:22,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,388 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 15:08:22,390 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 15:08:22,420 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:22,420 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:22,420 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:22,421 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 15:08:22,438 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 15:08:22,441 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:22,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:22,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:22,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:22,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:22,496 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 15:08:22,522 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 15:08:22,523 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 132 states, 131 states have (on average 1.83206106870229) internal successors, (240), 131 states have internal predecessors, (240), 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 15:08:22,635 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 132 states, 131 states have (on average 1.83206106870229) internal successors, (240), 131 states have internal predecessors, (240), 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 399 states and 720 transitions. Complement of second has 6 states. [2022-07-14 15:08:22,644 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 15:08:22,649 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 15:08:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2022-07-14 15:08:22,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 478 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-14 15:08:22,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:22,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 478 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 15:08:22,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:22,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 478 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-14 15:08:22,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:22,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 399 states and 720 transitions. [2022-07-14 15:08:22,666 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2022-07-14 15:08:22,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 399 states to 127 states and 216 transitions. [2022-07-14 15:08:22,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2022-07-14 15:08:22,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 124 [2022-07-14 15:08:22,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 216 transitions. [2022-07-14 15:08:22,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:22,673 INFO L369 hiAutomatonCegarLoop]: Abstraction has 127 states and 216 transitions. [2022-07-14 15:08:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states and 216 transitions. [2022-07-14 15:08:22,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 108. [2022-07-14 15:08:22,699 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 15:08:22,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 188 transitions. [2022-07-14 15:08:22,701 INFO L392 hiAutomatonCegarLoop]: Abstraction has 108 states and 188 transitions. [2022-07-14 15:08:22,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:22,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 15:08:22,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 15:08:22,705 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 15:08:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:22,800 INFO L93 Difference]: Finished difference Result 65 states and 100 transitions. [2022-07-14 15:08:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 15:08:22,801 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 100 transitions. [2022-07-14 15:08:22,803 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-14 15:08:22,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 65 states and 100 transitions. [2022-07-14 15:08:22,806 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2022-07-14 15:08:22,807 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2022-07-14 15:08:22,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 100 transitions. [2022-07-14 15:08:22,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:08:22,809 INFO L369 hiAutomatonCegarLoop]: Abstraction has 65 states and 100 transitions. [2022-07-14 15:08:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 100 transitions. [2022-07-14 15:08:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2022-07-14 15:08:22,816 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 15:08:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 82 transitions. [2022-07-14 15:08:22,817 INFO L392 hiAutomatonCegarLoop]: Abstraction has 53 states and 82 transitions. [2022-07-14 15:08:22,817 INFO L374 stractBuchiCegarLoop]: Abstraction has 53 states and 82 transitions. [2022-07-14 15:08:22,817 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 15:08:22,817 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 82 transitions. [2022-07-14 15:08:22,818 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-14 15:08:22,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:22,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:22,818 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:22,818 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:22,819 INFO L752 eck$LassoCheckResult]: Stem: 799#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); 793#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_~sa~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_~sa~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; 778#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 779#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 757#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; 758#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 794#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 782#L47-3 [2022-07-14 15:08:22,819 INFO L754 eck$LassoCheckResult]: Loop: 782#L47-3 assume !false; 774#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 775#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 782#L47-3 [2022-07-14 15:08:22,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920711, now seen corresponding path program 1 times [2022-07-14 15:08:22,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:22,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194206083] [2022-07-14 15:08:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:22,849 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:22,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:22,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:22,865 INFO L85 PathProgramCache]: Analyzing trace with hash 153118, now seen corresponding path program 1 times [2022-07-14 15:08:22,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:22,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607130555] [2022-07-14 15:08:22,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:22,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:22,872 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:22,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash 876132888, now seen corresponding path program 1 times [2022-07-14 15:08:22,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:22,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358475985] [2022-07-14 15:08:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:22,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:22,902 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:22,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:22,935 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:22,935 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:22,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:22,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:22,935 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:22,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:22,936 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:22,936 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2022-07-14 15:08:22,936 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:22,936 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:22,938 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 15:08:22,942 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 15:08:22,983 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:22,984 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:22,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:22,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:22,985 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 15:08:22,986 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 15:08:22,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:22,988 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:23,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:23,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,031 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 15:08:23,032 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 15:08:23,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:23,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:23,072 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:23,077 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 15:08:23,077 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:23,077 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:23,077 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:23,077 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:23,077 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:23,078 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,078 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:23,078 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:23,078 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2022-07-14 15:08:23,078 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:23,078 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:23,078 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 15:08:23,084 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 15:08:23,134 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:23,134 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:23,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,136 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 15:08:23,137 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 15:08:23,138 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 15:08:23,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:23,144 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:23,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:23,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:23,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:23,145 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:23,145 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:23,151 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:23,153 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:23,153 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:23,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,154 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 15:08:23,155 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 15:08:23,156 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:23,156 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:23,156 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:23,157 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 15:08:23,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:23,175 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:23,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:23,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:23,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:23,240 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 15:08:23,241 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 15:08:23,241 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 15:08:23,258 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 15:08:23,259 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 15:08:23,259 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 15:08:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2022-07-14 15:08:23,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 99 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 15:08:23,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 99 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-14 15:08:23,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 99 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-14 15:08:23,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 171 transitions. [2022-07-14 15:08:23,261 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2022-07-14 15:08:23,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 97 states and 150 transitions. [2022-07-14 15:08:23,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2022-07-14 15:08:23,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2022-07-14 15:08:23,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 150 transitions. [2022-07-14 15:08:23,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:23,262 INFO L369 hiAutomatonCegarLoop]: Abstraction has 97 states and 150 transitions. [2022-07-14 15:08:23,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 150 transitions. [2022-07-14 15:08:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 56. [2022-07-14 15:08:23,264 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 15:08:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2022-07-14 15:08:23,264 INFO L392 hiAutomatonCegarLoop]: Abstraction has 56 states and 86 transitions. [2022-07-14 15:08:23,264 INFO L374 stractBuchiCegarLoop]: Abstraction has 56 states and 86 transitions. [2022-07-14 15:08:23,264 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 15:08:23,264 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 86 transitions. [2022-07-14 15:08:23,264 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-14 15:08:23,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:23,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:23,265 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:23,265 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:23,265 INFO L752 eck$LassoCheckResult]: Stem: 1015#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); 1008#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_~sa~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_~sa~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; 992#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 993#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 970#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; 971#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1009#L35-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 976#L57-5 [2022-07-14 15:08:23,265 INFO L754 eck$LassoCheckResult]: Loop: 976#L57-5 assume !false; 972#L58-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 973#L59-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 976#L57-5 [2022-07-14 15:08:23,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920737, now seen corresponding path program 1 times [2022-07-14 15:08:23,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091954021] [2022-07-14 15:08:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,297 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 15:08:23,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:23,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091954021] [2022-07-14 15:08:23,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091954021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:23,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:23,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 15:08:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365812980] [2022-07-14 15:08:23,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:23,298 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash 178877, now seen corresponding path program 1 times [2022-07-14 15:08:23,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959622624] [2022-07-14 15:08:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,308 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,312 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:23,317 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 15:08:23,335 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 15:08:23,353 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:23,353 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:23,353 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:23,353 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:23,354 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:23,354 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,354 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:23,354 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:23,354 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2022-07-14 15:08:23,354 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:23,354 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:23,355 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 15:08:23,360 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 15:08:23,426 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:23,426 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:23,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,428 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 15:08:23,429 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 15:08:23,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:23,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:23,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:23,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,469 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 15:08:23,471 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 15:08:23,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:23,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:23,505 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:23,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:23,510 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:23,510 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:23,510 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:23,511 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:23,511 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:23,511 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,511 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:23,511 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:23,511 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2022-07-14 15:08:23,511 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:23,511 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:23,511 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 15:08:23,531 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 15:08:23,586 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:23,586 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:23,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,590 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 15:08:23,591 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 15:08:23,592 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 15:08:23,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:23,597 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:23,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:23,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:23,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:23,599 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:23,599 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:23,608 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:23,610 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:23,610 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:23,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,611 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 15:08:23,612 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 15:08:23,613 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:23,613 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:23,613 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:23,613 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 15:08:23,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:23,629 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:23,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:23,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:23,680 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 15:08:23,682 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 15:08:23,682 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 15:08:23,701 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 15:08:23,702 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 15:08:23,702 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 15:08:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2022-07-14 15:08:23,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 98 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-14 15:08:23,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 98 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-14 15:08:23,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 98 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-14 15:08:23,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:23,703 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 174 transitions. [2022-07-14 15:08:23,705 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2022-07-14 15:08:23,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 99 states and 153 transitions. [2022-07-14 15:08:23,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2022-07-14 15:08:23,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 93 [2022-07-14 15:08:23,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 153 transitions. [2022-07-14 15:08:23,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:23,707 INFO L369 hiAutomatonCegarLoop]: Abstraction has 99 states and 153 transitions. [2022-07-14 15:08:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 153 transitions. [2022-07-14 15:08:23,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 59. [2022-07-14 15:08:23,718 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 15:08:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 90 transitions. [2022-07-14 15:08:23,718 INFO L392 hiAutomatonCegarLoop]: Abstraction has 59 states and 90 transitions. [2022-07-14 15:08:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 15:08:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 15:08:23,719 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 15:08:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:23,763 INFO L93 Difference]: Finished difference Result 61 states and 87 transitions. [2022-07-14 15:08:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 15:08:23,765 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2022-07-14 15:08:23,766 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-14 15:08:23,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 61 states and 87 transitions. [2022-07-14 15:08:23,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2022-07-14 15:08:23,767 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-07-14 15:08:23,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 87 transitions. [2022-07-14 15:08:23,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:23,767 INFO L369 hiAutomatonCegarLoop]: Abstraction has 61 states and 87 transitions. [2022-07-14 15:08:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 87 transitions. [2022-07-14 15:08:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2022-07-14 15:08:23,768 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 15:08:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2022-07-14 15:08:23,769 INFO L392 hiAutomatonCegarLoop]: Abstraction has 53 states and 79 transitions. [2022-07-14 15:08:23,769 INFO L374 stractBuchiCegarLoop]: Abstraction has 53 states and 79 transitions. [2022-07-14 15:08:23,769 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-14 15:08:23,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 79 transitions. [2022-07-14 15:08:23,769 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-14 15:08:23,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:23,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:23,770 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:23,770 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:23,770 INFO L752 eck$LassoCheckResult]: Stem: 1340#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); 1311#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_~sa~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_~sa~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; 1312#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1344#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1316#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; 1317#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1319#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1320#L47-3 assume !false; 1341#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1318#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1330#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; 1337#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1334#L35-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1335#L57-8 [2022-07-14 15:08:23,770 INFO L754 eck$LassoCheckResult]: Loop: 1335#L57-8 assume !false; 1327#L58-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 1328#L59-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 1335#L57-8 [2022-07-14 15:08:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,770 INFO L85 PathProgramCache]: Analyzing trace with hash 359266186, now seen corresponding path program 1 times [2022-07-14 15:08:23,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167683290] [2022-07-14 15:08:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:23,786 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 15:08:23,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:23,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167683290] [2022-07-14 15:08:23,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167683290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:23,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:23,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 15:08:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961423277] [2022-07-14 15:08:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:23,787 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:23,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:23,787 INFO L85 PathProgramCache]: Analyzing trace with hash 283142, now seen corresponding path program 1 times [2022-07-14 15:08:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:23,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582571910] [2022-07-14 15:08:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:23,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,792 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:23,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:23,819 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:23,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:23,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:23,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:23,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:23,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:23,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:23,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2022-07-14 15:08:23,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:23,820 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:23,820 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 15:08:23,823 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 15:08:23,878 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:23,878 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:23,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,880 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 15:08:23,880 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 15:08:23,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:23,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:23,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:23,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:23,911 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 15:08:23,911 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 15:08:23,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:23,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:23,940 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:23,959 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 15:08:23,959 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:23,959 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:23,960 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:23,960 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:23,960 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:23,960 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:23,960 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:23,960 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:23,960 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2022-07-14 15:08:23,960 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:23,960 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:23,960 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 15:08:23,965 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 15:08:24,020 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,020 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:24,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,021 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 15:08:24,028 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 15:08:24,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:24,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:24,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:24,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:24,033 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:24,034 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:24,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:24,038 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 15:08:24,043 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:24,044 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:24,045 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:24,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,046 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 15:08:24,047 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 15:08:24,048 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:24,048 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:24,048 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:24,048 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 15:08:24,063 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 15:08:24,064 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:24,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,123 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 15:08:24,123 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 15:08:24,124 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 15:08:24,139 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 15:08:24,139 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 15:08:24,140 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 15:08:24,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2022-07-14 15:08:24,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 13 letters. Loop has 3 letters. [2022-07-14 15:08:24,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 16 letters. Loop has 3 letters. [2022-07-14 15:08:24,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 91 transitions. Stem has 13 letters. Loop has 6 letters. [2022-07-14 15:08:24,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 133 transitions. [2022-07-14 15:08:24,141 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-14 15:08:24,142 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 76 states and 112 transitions. [2022-07-14 15:08:24,142 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2022-07-14 15:08:24,142 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2022-07-14 15:08:24,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 112 transitions. [2022-07-14 15:08:24,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:24,142 INFO L369 hiAutomatonCegarLoop]: Abstraction has 76 states and 112 transitions. [2022-07-14 15:08:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states and 112 transitions. [2022-07-14 15:08:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2022-07-14 15:08:24,143 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 15:08:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 83 transitions. [2022-07-14 15:08:24,143 INFO L392 hiAutomatonCegarLoop]: Abstraction has 56 states and 83 transitions. [2022-07-14 15:08:24,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:24,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 15:08:24,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 15:08:24,144 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 15:08:24,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:24,176 INFO L93 Difference]: Finished difference Result 58 states and 84 transitions. [2022-07-14 15:08:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 15:08:24,178 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 84 transitions. [2022-07-14 15:08:24,179 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-14 15:08:24,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 57 states and 83 transitions. [2022-07-14 15:08:24,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2022-07-14 15:08:24,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2022-07-14 15:08:24,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 83 transitions. [2022-07-14 15:08:24,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:24,180 INFO L369 hiAutomatonCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-07-14 15:08:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 83 transitions. [2022-07-14 15:08:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-07-14 15:08:24,181 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 15:08:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2022-07-14 15:08:24,181 INFO L392 hiAutomatonCegarLoop]: Abstraction has 56 states and 82 transitions. [2022-07-14 15:08:24,181 INFO L374 stractBuchiCegarLoop]: Abstraction has 56 states and 82 transitions. [2022-07-14 15:08:24,181 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-14 15:08:24,181 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 82 transitions. [2022-07-14 15:08:24,182 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-14 15:08:24,182 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:24,182 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:24,182 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:08:24,182 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:24,183 INFO L752 eck$LassoCheckResult]: Stem: 1664#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); 1632#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_~sa~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_~sa~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; 1633#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1668#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1638#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; 1639#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1641#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1642#L47-3 assume !false; 1666#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1654#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1655#L47-3 assume !false; 1665#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1640#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1657#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; 1661#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1658#L35-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1660#L47-5 [2022-07-14 15:08:24,183 INFO L754 eck$LassoCheckResult]: Loop: 1660#L47-5 assume !false; 1663#L38-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1671#L47-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1660#L47-5 [2022-07-14 15:08:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1105339009, now seen corresponding path program 1 times [2022-07-14 15:08:24,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614970631] [2022-07-14 15:08:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,204 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 15:08:24,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:24,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614970631] [2022-07-14 15:08:24,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614970631] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 15:08:24,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654652274] [2022-07-14 15:08:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 15:08:24,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,206 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 15:08:24,211 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 15:08:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,262 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 15:08:24,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 15:08:24,286 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 15:08:24,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654652274] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 15:08:24,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 15:08:24,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-14 15:08:24,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749311722] [2022-07-14 15:08:24,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 15:08:24,287 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash 257383, now seen corresponding path program 1 times [2022-07-14 15:08:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677712781] [2022-07-14 15:08:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,292 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:24,318 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,318 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,318 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,318 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,318 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:24,318 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,318 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,318 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,319 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2022-07-14 15:08:24,319 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,319 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,319 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 15:08:24,322 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 15:08:24,367 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,367 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:24,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,369 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 15:08:24,370 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 15:08:24,371 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:24,371 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,412 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 15:08:24,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,414 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 15:08:24,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:24,422 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,426 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 15:08:24,446 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:24,448 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 15:08:24,448 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,448 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,449 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:24,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,449 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,449 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2022-07-14 15:08:24,449 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,449 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,449 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 15:08:24,460 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 15:08:24,504 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,505 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:24,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,506 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 15:08:24,507 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 15:08:24,509 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 15:08:24,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:24,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:24,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:24,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:24,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:24,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:24,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:24,531 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:24,532 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:24,532 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:24,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,533 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 15:08:24,534 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 15:08:24,535 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:24,535 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:24,535 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:24,536 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 15:08:24,557 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 15:08:24,558 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:24,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,605 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 15:08:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-14 15:08:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:24,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:24,664 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 15:08:24,668 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 15:08:24,668 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 15:08:24,668 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 15:08:24,683 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 15:08:24,684 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 15:08:24,684 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 15:08:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2022-07-14 15:08:24,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 92 transitions. Stem has 16 letters. Loop has 3 letters. [2022-07-14 15:08:24,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 92 transitions. Stem has 19 letters. Loop has 3 letters. [2022-07-14 15:08:24,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 92 transitions. Stem has 16 letters. Loop has 6 letters. [2022-07-14 15:08:24,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:24,685 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 137 transitions. [2022-07-14 15:08:24,686 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-14 15:08:24,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 80 states and 116 transitions. [2022-07-14 15:08:24,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2022-07-14 15:08:24,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2022-07-14 15:08:24,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 116 transitions. [2022-07-14 15:08:24,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:24,686 INFO L369 hiAutomatonCegarLoop]: Abstraction has 80 states and 116 transitions. [2022-07-14 15:08:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 116 transitions. [2022-07-14 15:08:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 59. [2022-07-14 15:08:24,687 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 15:08:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2022-07-14 15:08:24,688 INFO L392 hiAutomatonCegarLoop]: Abstraction has 59 states and 86 transitions. [2022-07-14 15:08:24,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 15:08:24,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-14 15:08:24,688 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 15:08:24,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:24,757 INFO L93 Difference]: Finished difference Result 113 states and 158 transitions. [2022-07-14 15:08:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 15:08:24,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 158 transitions. [2022-07-14 15:08:24,758 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-14 15:08:24,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 107 states and 152 transitions. [2022-07-14 15:08:24,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2022-07-14 15:08:24,759 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2022-07-14 15:08:24,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 152 transitions. [2022-07-14 15:08:24,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:24,759 INFO L369 hiAutomatonCegarLoop]: Abstraction has 107 states and 152 transitions. [2022-07-14 15:08:24,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 152 transitions. [2022-07-14 15:08:24,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 74. [2022-07-14 15:08:24,760 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 15:08:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2022-07-14 15:08:24,760 INFO L392 hiAutomatonCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-07-14 15:08:24,760 INFO L374 stractBuchiCegarLoop]: Abstraction has 74 states and 108 transitions. [2022-07-14 15:08:24,760 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-14 15:08:24,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 108 transitions. [2022-07-14 15:08:24,761 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-14 15:08:24,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:24,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:24,761 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 15:08:24,761 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:24,761 INFO L752 eck$LassoCheckResult]: Stem: 2158#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); 2123#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_~sa~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_~sa~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; 2124#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2160#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 2130#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; 2131#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 2132#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 2133#L47-3 assume !false; 2167#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 2176#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2136#L73-1 assume 0 == base2flt_~m#1 || 0 == ~bitwiseComplement(16777216);base2flt_~m#1 := 0; 2113#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))); 2117#L77-9 assume !(0 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))); 2118#L77-11 assume !((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 0 == 16777216 * (128 + base2flt_~e#1)); 2165#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; 2128#L77-15 base2flt_~__retres4~0#1 := base2flt_~res~0#1; 2129#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 2144#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; 2150#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2110#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 2111#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; 2159#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 2125#L35-3 assume base2flt_~m#1 % 4294967296 < 16777216; 2126#L47-7 [2022-07-14 15:08:24,762 INFO L754 eck$LassoCheckResult]: Loop: 2126#L47-7 assume !false; 2115#L38-3 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 2116#L47-6 assume base2flt_~m#1 % 4294967296 < 16777216; 2126#L47-7 [2022-07-14 15:08:24,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,762 INFO L85 PathProgramCache]: Analyzing trace with hash 488953666, now seen corresponding path program 1 times [2022-07-14 15:08:24,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056628750] [2022-07-14 15:08:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:24,788 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 15:08:24,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:24,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056628750] [2022-07-14 15:08:24,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056628750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:24,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:24,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 15:08:24,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181176787] [2022-07-14 15:08:24,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:24,789 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash 361648, now seen corresponding path program 1 times [2022-07-14 15:08:24,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:24,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197785928] [2022-07-14 15:08:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:24,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,792 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:24,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:24,808 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,808 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,808 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:24,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,808 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2022-07-14 15:08:24,808 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,808 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,809 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 15:08:24,812 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 15:08:24,849 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,849 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:24,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,850 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 15:08:24,851 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 15:08:24,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:24,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,889 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 15:08:24,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,891 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 15:08:24,891 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 15:08:24,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:24,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:24,916 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:24,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-14 15:08:24,919 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:24,919 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:24,919 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:24,919 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:24,919 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:24,919 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,919 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:24,919 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:24,919 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2022-07-14 15:08:24,919 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:24,919 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:24,920 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 15:08:24,930 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 15:08:24,972 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:24,972 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:24,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:24,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:24,974 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 15:08:24,975 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 15:08:24,976 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 15:08:24,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:24,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:24,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:24,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:24,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:24,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:24,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:24,998 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:25,000 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:25,000 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:25,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,001 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 15:08:25,002 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 15:08:25,003 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:25,003 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:25,003 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:25,003 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 15:08:25,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-07-14 15:08:25,020 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,083 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 15:08:25,084 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 15:08:25,084 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 15:08:25,087 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 15:08:25,087 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 15:08:25,088 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 15:08:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2022-07-14 15:08:25,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 23 letters. Loop has 3 letters. [2022-07-14 15:08:25,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 26 letters. Loop has 3 letters. [2022-07-14 15:08:25,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 74 transitions. Stem has 23 letters. Loop has 6 letters. [2022-07-14 15:08:25,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 112 transitions. [2022-07-14 15:08:25,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 15:08:25,089 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 71 states and 104 transitions. [2022-07-14 15:08:25,089 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2022-07-14 15:08:25,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2022-07-14 15:08:25,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 104 transitions. [2022-07-14 15:08:25,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:25,090 INFO L369 hiAutomatonCegarLoop]: Abstraction has 71 states and 104 transitions. [2022-07-14 15:08:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 104 transitions. [2022-07-14 15:08:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-07-14 15:08:25,091 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 15:08:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2022-07-14 15:08:25,091 INFO L392 hiAutomatonCegarLoop]: Abstraction has 71 states and 104 transitions. [2022-07-14 15:08:25,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 15:08:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 15:08:25,091 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 15:08:25,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:25,168 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2022-07-14 15:08:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 15:08:25,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 129 transitions. [2022-07-14 15:08:25,170 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 15:08:25,170 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 91 states and 129 transitions. [2022-07-14 15:08:25,170 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-07-14 15:08:25,170 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-07-14 15:08:25,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 129 transitions. [2022-07-14 15:08:25,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 15:08:25,170 INFO L369 hiAutomatonCegarLoop]: Abstraction has 91 states and 129 transitions. [2022-07-14 15:08:25,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 129 transitions. [2022-07-14 15:08:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2022-07-14 15:08:25,171 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 15:08:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 110 transitions. [2022-07-14 15:08:25,172 INFO L392 hiAutomatonCegarLoop]: Abstraction has 76 states and 110 transitions. [2022-07-14 15:08:25,172 INFO L374 stractBuchiCegarLoop]: Abstraction has 76 states and 110 transitions. [2022-07-14 15:08:25,172 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-14 15:08:25,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states and 110 transitions. [2022-07-14 15:08:25,172 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-14 15:08:25,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:08:25,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:08:25,173 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 15:08:25,173 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:08:25,173 INFO L752 eck$LassoCheckResult]: Stem: 2568#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); 2535#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_~sa~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_~sa~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; 2536#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2572#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 2540#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; 2541#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 2544#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 2545#L47-3 assume !false; 2580#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 2589#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2590#L73-1 assume 0 == base2flt_~m#1 || 0 == ~bitwiseComplement(16777216);base2flt_~m#1 := 0; 2600#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))); 2599#L77-9 assume !(0 == base2flt_~m#1 && (0 == 16777216 * (128 + base2flt_~e#1) || 1 == 16777216 * (128 + base2flt_~e#1))); 2598#L77-11 assume !((0 == base2flt_~m#1 || 1 == base2flt_~m#1) && 0 == 16777216 * (128 + base2flt_~e#1)); 2579#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; 2542#L77-15 base2flt_~__retres4~0#1 := base2flt_~res~0#1; 2543#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 2558#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; 2562#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 2528#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 2529#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; 2571#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 2538#L35-3 assume !(base2flt_~m#1 % 4294967296 < 16777216); 2539#L57-11 [2022-07-14 15:08:25,173 INFO L754 eck$LassoCheckResult]: Loop: 2539#L57-11 assume !false; 2546#L58-3 assume base2flt_~m#1 % 4294967296 >= 33554432; 2547#L59-3 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 2539#L57-11 [2022-07-14 15:08:25,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -191104678, now seen corresponding path program 1 times [2022-07-14 15:08:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:25,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658379941] [2022-07-14 15:08:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:25,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,216 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 15:08:25,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:08:25,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658379941] [2022-07-14 15:08:25,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658379941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:08:25,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:08:25,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 15:08:25,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201804596] [2022-07-14 15:08:25,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:08:25,217 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:08:25,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,218 INFO L85 PathProgramCache]: Analyzing trace with hash 387407, now seen corresponding path program 1 times [2022-07-14 15:08:25,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:08:25,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032992080] [2022-07-14 15:08:25,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:08:25,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:08:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,225 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:08:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:08:25,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:08:25,244 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:25,244 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:25,244 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:25,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:25,244 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:08:25,245 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,245 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:25,245 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:25,245 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2022-07-14 15:08:25,245 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:25,245 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:25,246 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 15:08:25,249 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 15:08:25,298 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,298 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:08:25,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,299 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 15:08:25,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:08:25,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,318 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 15:08:25,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-07-14 15:08:25,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,336 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 15:08:25,339 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 15:08:25,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:08:25,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:08:25,363 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:08:25,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-07-14 15:08:25,366 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:08:25,366 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:08:25,366 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:08:25,366 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:08:25,366 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:08:25,366 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,366 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:08:25,366 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:08:25,366 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2022-07-14 15:08:25,366 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:08:25,366 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:08:25,367 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 15:08:25,372 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 15:08:25,430 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:08:25,430 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:08:25,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,431 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 15:08:25,432 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 15:08:25,433 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 15:08:25,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:08:25,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:08:25,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:08:25,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:08:25,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:08:25,439 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:08:25,439 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:08:25,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:08:25,456 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:08:25,457 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:08:25,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:08:25,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:08:25,458 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 15:08:25,460 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 15:08:25,461 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:08:25,461 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:08:25,461 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:08:25,461 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-14 15:08:25,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-07-14 15:08:25,476 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:08:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:08:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:08:25,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:08:25,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:08:25,534 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 15:08:25,535 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 15:08:25,535 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 15:08:25,538 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 15:08:25,538 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 15:08:25,539 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 15:08:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2022-07-14 15:08:25,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 69 transitions. Stem has 23 letters. Loop has 3 letters. [2022-07-14 15:08:25,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 69 transitions. Stem has 26 letters. Loop has 3 letters. [2022-07-14 15:08:25,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 69 transitions. Stem has 23 letters. Loop has 6 letters. [2022-07-14 15:08:25,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:08:25,540 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 114 transitions. [2022-07-14 15:08:25,540 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:08:25,540 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 0 states and 0 transitions. [2022-07-14 15:08:25,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 15:08:25,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 15:08:25,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 15:08:25,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:08:25,540 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:25,540 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:25,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:08:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 15:08:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 15:08:25,541 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 15:08:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:08:25,541 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-14 15:08:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 15:08:25,541 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-14 15:08:25,541 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:08:25,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 15:08:25,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 15:08:25,541 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 15:08:25,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 15:08:25,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:08:25,541 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:25,541 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:25,541 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:08:25,542 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-14 15:08:25,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-14 15:08:25,542 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:08:25,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-14 15:08:25,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 03:08:25 BoogieIcfgContainer [2022-07-14 15:08:25,546 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 15:08:25,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 15:08:25,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 15:08:25,547 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 15:08:25,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:08:21" (3/4) ... [2022-07-14 15:08:25,549 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-14 15:08:25,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 15:08:25,549 INFO L158 Benchmark]: Toolchain (without parser) took 4884.08ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 95.0MB in the beginning and 63.5MB in the end (delta: 31.5MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. [2022-07-14 15:08:25,550 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:08:25,550 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.56ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 99.7MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 15:08:25,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.76ms. Allocated memory is still 130.0MB. Free memory was 99.7MB in the beginning and 97.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-14 15:08:25,550 INFO L158 Benchmark]: Boogie Preprocessor took 52.65ms. Allocated memory is still 130.0MB. Free memory was 97.0MB in the beginning and 94.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:08:25,550 INFO L158 Benchmark]: RCFGBuilder took 523.91ms. Allocated memory is still 130.0MB. Free memory was 94.2MB in the beginning and 67.7MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-14 15:08:25,550 INFO L158 Benchmark]: BuchiAutomizer took 3998.69ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 67.0MB in the beginning and 63.5MB in the end (delta: 3.5MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2022-07-14 15:08:25,551 INFO L158 Benchmark]: Witness Printer took 2.32ms. Allocated memory is still 178.3MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:08:25,551 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 77.6MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.56ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 99.7MB in the end (delta: -5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.76ms. Allocated memory is still 130.0MB. Free memory was 99.7MB in the beginning and 97.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.65ms. Allocated memory is still 130.0MB. Free memory was 97.0MB in the beginning and 94.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 523.91ms. Allocated memory is still 130.0MB. Free memory was 94.2MB in the beginning and 67.7MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 3998.69ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 67.0MB in the beginning and 63.5MB in the end (delta: 3.5MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. * Witness Printer took 2.32ms. Allocated memory is still 178.3MB. Free memory is still 63.5MB. 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 2.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. 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, 879 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 872 mSDsluCounter, 1429 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 377 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 480 IncrementalHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 1052 mSDtfsCounter, 480 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: 30ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-14 15:08:25,572 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 15:08:25,783 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 15:08:25,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-14 15:08:26,175 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