./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:37:51,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:37:51,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:37:51,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:37:51,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:37:51,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:37:51,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:37:51,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:37:51,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:37:51,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:37:51,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:37:51,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:37:51,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:37:51,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:37:51,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:37:51,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:37:51,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:37:51,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:37:51,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:37:51,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:37:51,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:37:51,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:37:51,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:37:51,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:37:51,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:37:51,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:37:51,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:37:51,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:37:51,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:37:51,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:37:51,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:37:51,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:37:51,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:37:51,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:37:51,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:37:51,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:37:51,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:37:51,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:37:51,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:37:51,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:37:51,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:37:51,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 14:37:51,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:37:51,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:37:51,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:37:51,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:37:51,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:37:51,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:37:51,194 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:37:51,194 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:37:51,194 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:37:51,194 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:37:51,195 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:37:51,195 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:37:51,195 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:37:51,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:37:51,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 14:37:51,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:37:51,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:37:51,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 14:37:51,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:37:51,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:37:51,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:37:51,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:37:51,198 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 14:37:51,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:37:51,198 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:37:51,198 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:37:51,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:37:51,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:37:51,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:37:51,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:37:51,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:37:51,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:37:51,201 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:37:51,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2021-08-27 14:37:51,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:37:51,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:37:51,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:37:51,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:37:51,571 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:37:51,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-08-27 14:37:51,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94410774b/74c47e7067dd4197a7321716f9b5d04d/FLAGbebd11fa5 [2021-08-27 14:37:52,081 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:37:52,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2021-08-27 14:37:52,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94410774b/74c47e7067dd4197a7321716f9b5d04d/FLAGbebd11fa5 [2021-08-27 14:37:52,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94410774b/74c47e7067dd4197a7321716f9b5d04d [2021-08-27 14:37:52,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:37:52,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:37:52,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:37:52,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:37:52,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:37:52,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212ff438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52, skipping insertion in model container [2021-08-27 14:37:52,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:37:52,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:37:52,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-08-27 14:37:52,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:37:52,728 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:37:52,753 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[425,438] [2021-08-27 14:37:52,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:37:52,815 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:37:52,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52 WrapperNode [2021-08-27 14:37:52,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:37:52,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:37:52,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:37:52,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:37:52,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:37:52,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:37:52,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:37:52,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:37:52,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:37:52,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:37:52,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:37:52,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:37:52,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (1/1) ... [2021-08-27 14:37:52,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:52,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:52,965 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) [2021-08-27 14:37:52,982 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 [2021-08-27 14:37:53,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 14:37:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 14:37:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:37:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:37:53,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:37:53,495 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-08-27 14:37:53,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:37:53 BoogieIcfgContainer [2021-08-27 14:37:53,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:37:53,497 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:37:53,497 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:37:53,500 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:37:53,500 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:37:53,500 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:37:52" (1/3) ... [2021-08-27 14:37:53,501 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d890988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:37:53, skipping insertion in model container [2021-08-27 14:37:53,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:37:53,501 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:37:52" (2/3) ... [2021-08-27 14:37:53,502 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d890988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:37:53, skipping insertion in model container [2021-08-27 14:37:53,502 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:37:53,502 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:37:53" (3/3) ... [2021-08-27 14:37:53,503 INFO L389 chiAutomizerObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2021-08-27 14:37:53,547 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:37:53,547 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:37:53,547 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:37:53,547 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:37:53,548 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:37:53,548 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:37:53,548 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:37:53,548 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:37:53,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 79 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 78 states have internal predecessors, (127), 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) [2021-08-27 14:37:53,600 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-08-27 14:37:53,600 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:37:53,600 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:37:53,604 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 14:37:53,604 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:37:53,604 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:37:53,605 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 79 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 78 states have internal predecessors, (127), 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) [2021-08-27 14:37:53,611 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-08-27 14:37:53,611 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:37:53,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:37:53,612 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 14:37:53,612 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:37:53,617 INFO L791 eck$LassoCheckResult]: Stem: 62#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 46#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 36#L21true assume !(0 == base2flt_~m % 4294967296); 21#L27true assume !(base2flt_~m % 4294967296 < 16777216); 43#L49-2true [2021-08-27 14:37:53,617 INFO L793 eck$LassoCheckResult]: Loop: 43#L49-2true assume !false; 47#L50true assume base2flt_~m % 4294967296 >= 33554432; 42#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 43#L49-2true [2021-08-27 14:37:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2021-08-27 14:37:53,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:53,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286429744] [2021-08-27 14:37:53,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:53,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:37:53,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:37:53,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286429744] [2021-08-27 14:37:53,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286429744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:37:53,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:37:53,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 14:37:53,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485117354] [2021-08-27 14:37:53,820 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:37:53,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:53,821 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2021-08-27 14:37:53,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:53,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105259142] [2021-08-27 14:37:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:53,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:53,836 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:53,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:53,932 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:53,932 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:53,932 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:53,933 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:53,933 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:37:53,933 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:53,933 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:53,933 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:53,933 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration1_Loop [2021-08-27 14:37:53,933 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:53,934 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:53,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:53,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:54,075 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:54,076 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:37:54,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:54,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:54,085 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) [2021-08-27 14:37:54,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:37:54,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:54,100 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 [2021-08-27 14:37:54,133 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 [2021-08-27 14:37:54,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:54,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:54,135 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) [2021-08-27 14:37:54,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:37:54,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:54,153 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 [2021-08-27 14:37:54,180 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:37:54,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 14:37:54,186 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:54,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:54,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:54,186 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:54,186 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:37:54,186 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:54,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:54,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:54,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration1_Loop [2021-08-27 14:37:54,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:54,186 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:54,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:54,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:54,293 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:54,297 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:37:54,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:54,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:54,301 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) [2021-08-27 14:37:54,307 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 [2021-08-27 14:37:54,347 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 [2021-08-27 14:37:54,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:37:54,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:37:54,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:37:54,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:37:54,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:37:54,357 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:37:54,357 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:37:54,373 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:37:54,379 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:37:54,379 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:37:54,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:54,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:54,385 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) [2021-08-27 14:37:54,391 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:37:54,392 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:37:54,392 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:37:54,392 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2021-08-27 14:37:54,410 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 [2021-08-27 14:37:54,419 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 [2021-08-27 14:37:54,421 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:37:54,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:54,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:37:54,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:54,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:37:54,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:37:54,513 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 [2021-08-27 14:37:54,514 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 79 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 78 states have internal predecessors, (127), 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) [2021-08-27 14:37:54,600 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 79 states, 78 states have (on average 1.6282051282051282) internal successors, (127), 78 states have internal predecessors, (127), 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 233 states and 361 transitions. Complement of second has 6 states. [2021-08-27 14:37:54,602 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 [2021-08-27 14:37:54,604 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) [2021-08-27 14:37:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2021-08-27 14:37:54,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-27 14:37:54,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:54,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-27 14:37:54,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:54,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 236 transitions. Stem has 4 letters. Loop has 6 letters. [2021-08-27 14:37:54,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:54,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 233 states and 361 transitions. [2021-08-27 14:37:54,623 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2021-08-27 14:37:54,631 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 233 states to 57 states and 82 transitions. [2021-08-27 14:37:54,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-08-27 14:37:54,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2021-08-27 14:37:54,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2021-08-27 14:37:54,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:37:54,634 INFO L681 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2021-08-27 14:37:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2021-08-27 14:37:54,685 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 [2021-08-27 14:37:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2021-08-27 14:37:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 45 states have internal predecessors, (70), 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) [2021-08-27 14:37:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2021-08-27 14:37:54,693 INFO L704 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2021-08-27 14:37:54,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:37:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:37:54,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:37:54,698 INFO L87 Difference]: Start difference. First operand 46 states and 70 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) [2021-08-27 14:37:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:37:54,740 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2021-08-27 14:37:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:37:54,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-08-27 14:37:54,741 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-08-27 14:37:54,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2021-08-27 14:37:54,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-08-27 14:37:54,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-08-27 14:37:54,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2021-08-27 14:37:54,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:37:54,743 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-08-27 14:37:54,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2021-08-27 14:37:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-08-27 14:37:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 23 states have internal predecessors, (31), 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) [2021-08-27 14:37:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-08-27 14:37:54,745 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-08-27 14:37:54,745 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-08-27 14:37:54,745 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:37:54,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2021-08-27 14:37:54,745 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-08-27 14:37:54,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:37:54,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:37:54,746 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:37:54,746 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:37:54,746 INFO L791 eck$LassoCheckResult]: Stem: 435#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 436#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 444#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 439#L71 base2flt_#res := base2flt_~__retres4~0; 440#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 449#L21-1 assume !(0 == base2flt_~m % 4294967296); 448#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 441#L49-5 [2021-08-27 14:37:54,747 INFO L793 eck$LassoCheckResult]: Loop: 441#L49-5 assume !false; 442#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 443#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 441#L49-5 [2021-08-27 14:37:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2021-08-27 14:37:54,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:54,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816219076] [2021-08-27 14:37:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:54,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:54,762 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:54,778 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:54,779 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2021-08-27 14:37:54,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:54,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301199756] [2021-08-27 14:37:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:54,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:54,786 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:54,792 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:54,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:54,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2021-08-27 14:37:54,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:54,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074046860] [2021-08-27 14:37:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:54,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:54,808 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:54,827 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:54,859 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:54,859 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:54,859 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:54,859 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:54,859 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:37:54,860 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:54,860 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:54,860 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:54,860 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration2_Loop [2021-08-27 14:37:54,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:54,860 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:54,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:54,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:54,949 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:54,949 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:37:54,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:54,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:54,951 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) [2021-08-27 14:37:54,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:37:54,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:54,980 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 [2021-08-27 14:37:55,002 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:37:55,002 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:37:55,011 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 [2021-08-27 14:37:55,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,013 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) [2021-08-27 14:37:55,014 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 [2021-08-27 14:37:55,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:37:55,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:55,065 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 [2021-08-27 14:37:55,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,066 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) [2021-08-27 14:37:55,068 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 [2021-08-27 14:37:55,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:37:55,069 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:55,114 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:37:55,119 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 [2021-08-27 14:37:55,119 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:55,119 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:55,120 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:55,120 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:55,120 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:37:55,120 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,120 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:55,120 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:55,120 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration2_Loop [2021-08-27 14:37:55,120 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:55,120 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:55,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:55,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:55,201 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:55,202 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:37:55,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,205 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) [2021-08-27 14:37:55,216 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 [2021-08-27 14:37:55,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:37:55,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:37:55,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:37:55,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:37:55,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:37:55,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:37:55,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:37:55,230 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 [2021-08-27 14:37:55,240 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:37:55,267 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 [2021-08-27 14:37:55,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,269 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) [2021-08-27 14:37:55,271 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 [2021-08-27 14:37:55,273 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 [2021-08-27 14:37:55,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:37:55,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:37:55,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:37:55,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:37:55,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:37:55,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:37:55,283 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:37:55,296 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:37:55,305 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:37:55,305 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:37:55,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,306 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) [2021-08-27 14:37:55,307 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 [2021-08-27 14:37:55,309 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:37:55,309 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:37:55,309 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:37:55,309 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2021-08-27 14:37:55,335 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 [2021-08-27 14:37:55,336 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:37:55,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:55,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:37:55,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:55,421 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 [2021-08-27 14:37:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:55,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:37:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:37:55,455 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 [2021-08-27 14:37:55,456 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 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) [2021-08-27 14:37:55,466 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11. 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 41 states and 51 transitions. Complement of second has 5 states. [2021-08-27 14:37:55,466 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 [2021-08-27 14:37:55,467 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) [2021-08-27 14:37:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2021-08-27 14:37:55,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-27 14:37:55,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:55,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-27 14:37:55,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:55,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2021-08-27 14:37:55,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:55,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2021-08-27 14:37:55,468 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-08-27 14:37:55,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2021-08-27 14:37:55,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-08-27 14:37:55,469 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-08-27 14:37:55,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2021-08-27 14:37:55,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:37:55,469 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-08-27 14:37:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2021-08-27 14:37:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-08-27 14:37:55,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 states have internal predecessors, (35), 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) [2021-08-27 14:37:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-08-27 14:37:55,471 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-08-27 14:37:55,471 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-08-27 14:37:55,471 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 14:37:55,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2021-08-27 14:37:55,472 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-08-27 14:37:55,472 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:37:55,472 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:37:55,472 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:37:55,472 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:37:55,473 INFO L791 eck$LassoCheckResult]: Stem: 550#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 551#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 562#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 554#L71 base2flt_#res := base2flt_~__retres4~0; 555#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 567#L21-1 assume !(0 == base2flt_~m % 4294967296); 566#L27-1 assume base2flt_~m % 4294967296 < 16777216; 547#L39-3 [2021-08-27 14:37:55,473 INFO L793 eck$LassoCheckResult]: Loop: 547#L39-3 assume !false; 548#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 565#L39-2 assume base2flt_~m % 4294967296 < 16777216; 547#L39-3 [2021-08-27 14:37:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:55,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2021-08-27 14:37:55,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:55,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830221003] [2021-08-27 14:37:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:55,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:55,484 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:55,506 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:55,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2021-08-27 14:37:55,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:55,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010859806] [2021-08-27 14:37:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:55,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:55,510 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:55,514 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:55,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:55,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2021-08-27 14:37:55,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:55,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256209317] [2021-08-27 14:37:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:55,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:55,528 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:55,544 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:55,571 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:55,571 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:55,571 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:55,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:55,572 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:37:55,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:55,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:55,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration3_Loop [2021-08-27 14:37:55,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:55,572 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:55,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:55,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:55,636 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:55,636 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:37:55,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,651 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) [2021-08-27 14:37:55,653 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 [2021-08-27 14:37:55,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:37:55,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:55,711 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:37:55,711 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:37:55,717 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 [2021-08-27 14:37:55,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,719 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) [2021-08-27 14:37:55,720 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 [2021-08-27 14:37:55,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:37:55,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:55,759 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 [2021-08-27 14:37:55,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,761 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) [2021-08-27 14:37:55,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:37:55,781 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:55,812 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 [2021-08-27 14:37:55,839 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:37:55,845 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 [2021-08-27 14:37:55,845 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:55,846 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:55,846 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:55,846 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:55,846 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:37:55,846 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,846 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:55,846 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:55,846 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration3_Loop [2021-08-27 14:37:55,846 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:55,846 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:55,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:55,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:55,921 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:55,922 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:37:55,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,923 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) [2021-08-27 14:37:55,924 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 [2021-08-27 14:37:55,926 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 [2021-08-27 14:37:55,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:37:55,934 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:37:55,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:37:55,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:37:55,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:37:55,936 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:37:55,936 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:37:55,952 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:37:55,979 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 [2021-08-27 14:37:55,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:55,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:55,981 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) [2021-08-27 14:37:55,984 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 [2021-08-27 14:37:55,984 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 [2021-08-27 14:37:55,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:37:55,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:37:55,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:37:55,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:37:55,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:37:55,992 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:37:55,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:37:56,000 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:37:56,002 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:37:56,002 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:37:56,002 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:56,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:56,003 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) [2021-08-27 14:37:56,005 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 [2021-08-27 14:37:56,005 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:37:56,006 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:37:56,006 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:37:56,006 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2021-08-27 14:37:56,021 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 [2021-08-27 14:37:56,022 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:37:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:56,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:37:56,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:56,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:37:56,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:37:56,154 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 [2021-08-27 14:37:56,155 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 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) [2021-08-27 14:37:56,167 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12. 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 45 states and 56 transitions. Complement of second has 5 states. [2021-08-27 14:37:56,167 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 [2021-08-27 14:37:56,168 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) [2021-08-27 14:37:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2021-08-27 14:37:56,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-27 14:37:56,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:56,171 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-27 14:37:56,172 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:56,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2021-08-27 14:37:56,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:56,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2021-08-27 14:37:56,175 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-08-27 14:37:56,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2021-08-27 14:37:56,176 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-08-27 14:37:56,176 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-08-27 14:37:56,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2021-08-27 14:37:56,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:37:56,177 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2021-08-27 14:37:56,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2021-08-27 14:37:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2021-08-27 14:37:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.3) internal successors, (39), 29 states have internal predecessors, (39), 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) [2021-08-27 14:37:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-08-27 14:37:56,183 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-08-27 14:37:56,183 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-08-27 14:37:56,183 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 14:37:56,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2021-08-27 14:37:56,184 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-08-27 14:37:56,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:37:56,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:37:56,185 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:37:56,185 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:37:56,185 INFO L791 eck$LassoCheckResult]: Stem: 675#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 676#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 687#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 679#L71 base2flt_#res := base2flt_~__retres4~0; 680#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 693#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 678#L71-1 base2flt_#res := base2flt_~__retres4~0; 670#L72-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 671#L21-2 assume !(0 == base2flt_~m % 4294967296); 688#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 665#L49-8 [2021-08-27 14:37:56,185 INFO L793 eck$LassoCheckResult]: Loop: 665#L49-8 assume !false; 674#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 664#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 665#L49-8 [2021-08-27 14:37:56,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:56,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2021-08-27 14:37:56,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:56,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321332739] [2021-08-27 14:37:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:56,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,250 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,263 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:56,264 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2021-08-27 14:37:56,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:56,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258724761] [2021-08-27 14:37:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:56,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,268 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,272 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:56,275 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 [2021-08-27 14:37:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:56,276 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2021-08-27 14:37:56,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:56,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012068024] [2021-08-27 14:37:56,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:56,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,292 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,305 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:56,340 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:56,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:56,340 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:56,340 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:56,340 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:37:56,340 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:56,340 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:56,340 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:56,340 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration4_Loop [2021-08-27 14:37:56,340 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:56,340 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:56,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:56,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:56,416 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:56,416 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:37:56,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:56,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:56,421 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) [2021-08-27 14:37:56,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:37:56,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:56,439 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 [2021-08-27 14:37:56,472 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 [2021-08-27 14:37:56,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:56,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:56,473 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) [2021-08-27 14:37:56,474 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 [2021-08-27 14:37:56,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:37:56,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:56,502 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:37:56,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-08-27 14:37:56,506 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:56,506 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:56,506 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:56,506 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:56,506 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:37:56,506 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:56,506 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:56,506 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:56,506 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration4_Loop [2021-08-27 14:37:56,506 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:56,506 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:56,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:56,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:56,599 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:56,599 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:37:56,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:56,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:56,600 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:37:56,615 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 [2021-08-27 14:37:56,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:37:56,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:37:56,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:37:56,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:37:56,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:37:56,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:37:56,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:37:56,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-27 14:37:56,640 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:37:56,643 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:37:56,643 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:37:56,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:56,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:56,645 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) [2021-08-27 14:37:56,651 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:37:56,652 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:37:56,652 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:37:56,652 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2021-08-27 14:37:56,672 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 [2021-08-27 14:37:56,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-27 14:37:56,679 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:37:56,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:56,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:37:56,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:56,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:37:56,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:37:56,777 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 [2021-08-27 14:37:56,777 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 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) [2021-08-27 14:37:56,782 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 43 transitions. Complement of second has 4 states. [2021-08-27 14:37:56,782 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 [2021-08-27 14:37:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:37:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2021-08-27 14:37:56,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-27 14:37:56,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:56,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2021-08-27 14:37:56,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:56,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2021-08-27 14:37:56,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:56,785 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2021-08-27 14:37:56,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:37:56,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2021-08-27 14:37:56,786 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-08-27 14:37:56,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-08-27 14:37:56,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2021-08-27 14:37:56,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:37:56,787 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-08-27 14:37:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2021-08-27 14:37:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-08-27 14:37:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 26 states have internal predecessors, (35), 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) [2021-08-27 14:37:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-08-27 14:37:56,791 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-08-27 14:37:56,791 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-08-27 14:37:56,791 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 14:37:56,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2021-08-27 14:37:56,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:37:56,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:37:56,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:37:56,793 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 14:37:56,793 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:37:56,793 INFO L791 eck$LassoCheckResult]: Stem: 793#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 794#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 805#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 797#L71 base2flt_#res := base2flt_~__retres4~0; 798#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 811#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 796#L71-1 base2flt_#res := base2flt_~__retres4~0; 791#L72-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 792#L21-2 assume !(0 == base2flt_~m % 4294967296); 806#L27-2 assume base2flt_~m % 4294967296 < 16777216; 807#L39-5 [2021-08-27 14:37:56,793 INFO L793 eck$LassoCheckResult]: Loop: 807#L39-5 assume !false; 789#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 790#L39-4 assume base2flt_~m % 4294967296 < 16777216; 807#L39-5 [2021-08-27 14:37:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:56,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2021-08-27 14:37:56,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:56,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945167596] [2021-08-27 14:37:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:56,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,804 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,829 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:56,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:56,832 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2021-08-27 14:37:56,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:56,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118592861] [2021-08-27 14:37:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:56,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,838 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,840 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:56,841 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2021-08-27 14:37:56,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:37:56,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906389214] [2021-08-27 14:37:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:37:56,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:37:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,851 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:37:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:37:56,863 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:37:56,887 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:56,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:56,888 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:56,888 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:56,888 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:37:56,888 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:56,888 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:56,888 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:56,888 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration5_Loop [2021-08-27 14:37:56,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:56,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:56,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:56,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:56,943 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:56,943 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:37:56,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:56,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:56,945 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) [2021-08-27 14:37:56,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:37:56,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:56,965 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 [2021-08-27 14:37:57,015 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 [2021-08-27 14:37:57,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:57,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:57,016 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) [2021-08-27 14:37:57,017 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 [2021-08-27 14:37:57,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:37:57,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:37:57,047 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:37:57,052 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 [2021-08-27 14:37:57,052 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:37:57,052 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:37:57,052 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:37:57,052 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:37:57,052 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:37:57,052 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:57,052 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:37:57,052 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:37:57,052 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration5_Loop [2021-08-27 14:37:57,052 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:37:57,052 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:37:57,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:57,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:37:57,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-08-27 14:37:57,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:37:57,145 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:37:57,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:57,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:57,146 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) [2021-08-27 14:37:57,156 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 [2021-08-27 14:37:57,157 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 [2021-08-27 14:37:57,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:37:57,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:37:57,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:37:57,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:37:57,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:37:57,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:37:57,166 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:37:57,175 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:37:57,178 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:37:57,179 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:37:57,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:37:57,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:37:57,179 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) [2021-08-27 14:37:57,180 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 [2021-08-27 14:37:57,181 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:37:57,181 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:37:57,181 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:37:57,181 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2021-08-27 14:37:57,197 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 [2021-08-27 14:37:57,197 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:37:57,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:37:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:57,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:37:57,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:37:57,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:37:57,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:37:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:37:57,305 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 [2021-08-27 14:37:57,305 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:37:57,327 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 39 transitions. Complement of second has 4 states. [2021-08-27 14:37:57,328 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 [2021-08-27 14:37:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:37:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2021-08-27 14:37:57,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-27 14:37:57,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:57,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2021-08-27 14:37:57,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:57,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2021-08-27 14:37:57,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:37:57,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2021-08-27 14:37:57,329 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:37:57,329 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2021-08-27 14:37:57,329 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:37:57,329 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:37:57,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:37:57,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:37:57,330 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:37:57,330 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:37:57,330 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:37:57,330 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-27 14:37:57,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 14:37:57,330 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:37:57,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 14:37:57,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:37:57 BoogieIcfgContainer [2021-08-27 14:37:57,335 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:37:57,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:37:57,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:37:57,336 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:37:57,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:37:53" (3/4) ... [2021-08-27 14:37:57,338 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 14:37:57,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:37:57,339 INFO L168 Benchmark]: Toolchain (without parser) took 4849.03 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 39.2 MB in the beginning and 50.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. [2021-08-27 14:37:57,340 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 42.8 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:37:57,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.71 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 42.6 MB in the end (delta: -3.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 14:37:57,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.60 ms. Allocated memory is still 60.8 MB. Free memory was 42.6 MB in the beginning and 40.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:37:57,341 INFO L168 Benchmark]: Boogie Preprocessor took 49.02 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 38.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:37:57,341 INFO L168 Benchmark]: RCFGBuilder took 555.06 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 38.6 MB in the beginning and 39.3 MB in the end (delta: -696.3 kB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 14:37:57,341 INFO L168 Benchmark]: BuchiAutomizer took 3837.88 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 39.0 MB in the beginning and 51.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-08-27 14:37:57,341 INFO L168 Benchmark]: Witness Printer took 2.65 ms. Allocated memory is still 107.0 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:37:57,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 42.8 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.71 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 42.6 MB in the end (delta: -3.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.60 ms. Allocated memory is still 60.8 MB. Free memory was 42.6 MB in the beginning and 40.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.02 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 38.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 555.06 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 38.6 MB in the beginning and 39.3 MB in the end (delta: -696.3 kB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3837.88 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 39.0 MB in the beginning and 51.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * Witness Printer took 2.65 ms. Allocated memory is still 107.0 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 253 + -2 * e and consists of 4 locations. One deterministic module has affine ranking function 253 + -2 * e 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 253 + -2 * e and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 31.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 30 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 259 SDtfs, 226 SDslu, 27 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 55.7ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp57 ukn100 mio100 lsp100 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 94ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 14:37:57,368 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 [2021-08-27 14:37:57,569 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...