./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:32:50,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:32:50,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:32:50,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:32:50,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:32:50,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:32:50,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:32:50,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:32:50,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:32:50,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:32:50,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:32:50,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:32:50,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:32:50,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:32:50,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:32:50,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:32:50,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:32:50,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:32:50,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:32:50,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:32:50,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:32:50,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:32:50,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:32:50,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:32:50,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:32:50,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:32:50,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:32:50,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:32:50,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:32:50,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:32:50,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:32:50,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:32:50,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:32:50,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:32:50,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:32:50,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:32:50,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:32:50,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:32:50,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:32:50,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:32:50,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:32:50,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-16 09:32:50,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:32:50,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:32:50,995 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:32:50,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:32:50,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:32:50,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:32:50,996 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:32:50,997 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-16 09:32:50,997 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-16 09:32:50,997 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-16 09:32:50,997 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-16 09:32:50,997 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-16 09:32:50,998 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-16 09:32:50,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:32:50,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 09:32:50,998 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:32:50,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:32:50,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 09:32:50,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:32:50,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-16 09:32:50,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-16 09:32:50,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-16 09:32:50,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 09:32:51,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:32:51,000 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-16 09:32:51,000 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:32:51,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-16 09:32:51,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:32:51,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:32:51,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:32:51,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:32:51,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:32:51,002 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-16 09:32:51,002 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2abfa4882ab8ec6bd7a33a5fbeaa8a88ba40a897019218fc162e52833c89454b [2021-12-16 09:32:51,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:32:51,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:32:51,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:32:51,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:32:51,194 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:32:51,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2021-12-16 09:32:51,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1ea4771/0bcea16fca9a4bb0bed3b21771ef9d4d/FLAG059786583 [2021-12-16 09:32:51,653 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:32:51,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2021-12-16 09:32:51,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1ea4771/0bcea16fca9a4bb0bed3b21771ef9d4d/FLAG059786583 [2021-12-16 09:32:51,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1ea4771/0bcea16fca9a4bb0bed3b21771ef9d4d [2021-12-16 09:32:51,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:32:51,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:32:51,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:32:51,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:32:51,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:32:51,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:51,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aee3c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51, skipping insertion in model container [2021-12-16 09:32:51,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:51,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:32:51,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:32:51,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2021-12-16 09:32:51,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:32:51,930 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:32:51,943 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c[755,768] [2021-12-16 09:32:51,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:32:51,987 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:32:51,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51 WrapperNode [2021-12-16 09:32:51,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:32:51,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:32:51,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:32:51,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:32:51,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,043 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 291 [2021-12-16 09:32:52,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:32:52,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:32:52,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:32:52,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:32:52,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:32:52,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:32:52,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:32:52,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:32:52,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (1/1) ... [2021-12-16 09:32:52,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:52,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:52,113 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) [2021-12-16 09:32:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 09:32:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 09:32:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:32:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:32:52,131 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 [2021-12-16 09:32:52,208 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:32:52,210 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:32:52,464 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:32:52,469 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:32:52,469 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-16 09:32:52,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:32:52 BoogieIcfgContainer [2021-12-16 09:32:52,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:32:52,472 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-16 09:32:52,472 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-16 09:32:52,475 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-16 09:32:52,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:32:52,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.12 09:32:51" (1/3) ... [2021-12-16 09:32:52,476 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ff02940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:32:52, skipping insertion in model container [2021-12-16 09:32:52,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:32:52,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:32:51" (2/3) ... [2021-12-16 09:32:52,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ff02940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 09:32:52, skipping insertion in model container [2021-12-16 09:32:52,477 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 09:32:52,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:32:52" (3/3) ... [2021-12-16 09:32:52,478 INFO L388 chiAutomizerObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2021-12-16 09:32:52,515 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-16 09:32:52,516 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-16 09:32:52,516 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-16 09:32:52,516 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-16 09:32:52,516 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-16 09:32:52,516 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-16 09:32:52,516 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-16 09:32:52,516 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-16 09:32:52,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 77 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 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) [2021-12-16 09:32:52,554 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-12-16 09:32:52,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:32:52,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:32:52,558 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-16 09:32:52,559 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-16 09:32:52,559 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-16 09:32:52,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 77 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 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) [2021-12-16 09:32:52,563 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-12-16 09:32:52,563 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:32:52,563 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:32:52,564 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-16 09:32:52,564 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-16 09:32:52,569 INFO L791 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 44#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 6#L30true assume !(0 == base2flt_~m#1 % 4294967296); 67#L36true assume !(base2flt_~m#1 % 4294967296 < 16777216); 18#L58-2true [2021-12-16 09:32:52,569 INFO L793 eck$LassoCheckResult]: Loop: 18#L58-2true assume !false; 42#L59true assume base2flt_~m#1 % 4294967296 >= 33554432; 74#L60true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 18#L58-2true [2021-12-16 09:32:52,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:52,573 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2021-12-16 09:32:52,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:52,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132243349] [2021-12-16 09:32:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:52,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:32:52,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:32:52,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132243349] [2021-12-16 09:32:52,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132243349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:32:52,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:32:52,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:32:52,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201855762] [2021-12-16 09:32:52,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:32:52,748 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-16 09:32:52,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:52,750 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2021-12-16 09:32:52,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:52,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105910019] [2021-12-16 09:32:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:52,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:52,765 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:52,789 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:52,851 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:52,853 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:52,854 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:52,854 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:52,854 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:32:52,854 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:52,854 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:52,854 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:52,854 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2021-12-16 09:32:52,855 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:52,855 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:52,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:52,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:52,960 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:52,960 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:32:52,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:52,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:52,977 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) [2021-12-16 09:32:52,979 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 [2021-12-16 09:32:52,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:32:52,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:53,050 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 [2021-12-16 09:32:53,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:53,053 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) [2021-12-16 09:32:53,054 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 [2021-12-16 09:32:53,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:32:53,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:53,092 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:32:53,098 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 [2021-12-16 09:32:53,098 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:53,098 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:53,098 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:53,098 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:53,098 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:32:53,098 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,098 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:53,099 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:53,099 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2021-12-16 09:32:53,099 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:53,099 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:53,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:53,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:53,188 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:53,192 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:32:53,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:53,195 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) [2021-12-16 09:32:53,196 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 [2021-12-16 09:32:53,199 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 [2021-12-16 09:32:53,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:32:53,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:32:53,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:32:53,208 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:32:53,208 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:32:53,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:32:53,211 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:32:53,222 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:32:53,228 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-16 09:32:53,228 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-16 09:32:53,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:53,231 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) [2021-12-16 09:32:53,234 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 [2021-12-16 09:32:53,236 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:32:53,236 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:32:53,236 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:32:53,237 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-12-16 09:32:53,255 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 [2021-12-16 09:32:53,257 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:32:53,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:53,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:32:53,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:53,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 09:32:53,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:32:53,361 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 [2021-12-16 09:32:53,384 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 [2021-12-16 09:32:53,386 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 77 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 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) [2021-12-16 09:32:53,457 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 77 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 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 227 states and 355 transitions. Complement of second has 6 states. [2021-12-16 09:32:53,459 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 [2021-12-16 09:32:53,464 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) [2021-12-16 09:32:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2021-12-16 09:32:53,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 232 transitions. Stem has 4 letters. Loop has 3 letters. [2021-12-16 09:32:53,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:53,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 232 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-16 09:32:53,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:53,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 232 transitions. Stem has 4 letters. Loop has 6 letters. [2021-12-16 09:32:53,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:53,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 227 states and 355 transitions. [2021-12-16 09:32:53,482 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2021-12-16 09:32:53,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 227 states to 57 states and 82 transitions. [2021-12-16 09:32:53,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-12-16 09:32:53,488 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2021-12-16 09:32:53,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2021-12-16 09:32:53,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-16 09:32:53,488 INFO L681 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2021-12-16 09:32:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2021-12-16 09:32:53,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2021-12-16 09:32:53,509 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) [2021-12-16 09:32:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2021-12-16 09:32:53,510 INFO L704 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2021-12-16 09:32:53,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:32:53,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:32:53,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:32:53,514 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) [2021-12-16 09:32:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:32:53,545 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2021-12-16 09:32:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:32:53,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-12-16 09:32:53,547 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-12-16 09:32:53,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2021-12-16 09:32:53,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-12-16 09:32:53,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-12-16 09:32:53,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2021-12-16 09:32:53,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 09:32:53,549 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-12-16 09:32:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2021-12-16 09:32:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-16 09:32:53,551 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) [2021-12-16 09:32:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-12-16 09:32:53,552 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-12-16 09:32:53,552 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-12-16 09:32:53,552 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-16 09:32:53,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2021-12-16 09:32:53,552 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-12-16 09:32:53,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:32:53,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:32:53,553 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:32:53,553 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-16 09:32:53,554 INFO L791 eck$LassoCheckResult]: Stem: 425#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 426#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 427#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 428#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 437#L81 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 438#L30-1 assume !(0 == base2flt_~m#1 % 4294967296); 440#L36-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 430#L58-5 [2021-12-16 09:32:53,554 INFO L793 eck$LassoCheckResult]: Loop: 430#L58-5 assume !false; 431#L59-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 432#L60-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 430#L58-5 [2021-12-16 09:32:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2021-12-16 09:32:53,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:53,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68075421] [2021-12-16 09:32:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:53,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:53,579 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:53,601 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:53,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2021-12-16 09:32:53,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:53,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238679733] [2021-12-16 09:32:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:53,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:53,607 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:53,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2021-12-16 09:32:53,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:53,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696806772] [2021-12-16 09:32:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:53,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:53,637 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:53,659 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:53,684 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:53,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:53,684 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:53,684 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:53,684 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:32:53,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:53,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:53,686 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2021-12-16 09:32:53,688 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:53,688 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:53,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:53,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:53,757 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:53,757 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:32:53,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:53,759 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) [2021-12-16 09:32:53,760 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 [2021-12-16 09:32:53,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:32:53,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:53,788 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:32:53,788 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-16 09:32:53,793 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 [2021-12-16 09:32:53,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:53,795 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) [2021-12-16 09:32:53,796 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 [2021-12-16 09:32:53,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:32:53,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:53,836 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 [2021-12-16 09:32:53,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:53,837 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) [2021-12-16 09:32:53,838 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 [2021-12-16 09:32:53,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:32:53,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:53,875 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:32:53,881 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 [2021-12-16 09:32:53,881 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:53,881 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:53,881 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:53,881 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:53,881 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:32:53,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:53,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:53,882 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2021-12-16 09:32:53,882 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:53,882 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:53,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:53,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:53,949 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:53,949 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:32:53,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:53,950 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) [2021-12-16 09:32:53,959 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 [2021-12-16 09:32:53,959 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 [2021-12-16 09:32:53,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:32:53,965 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:32:53,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:32:53,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:32:53,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:32:53,967 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:32:53,967 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:32:53,976 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:32:53,992 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 [2021-12-16 09:32:53,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:53,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:53,994 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) [2021-12-16 09:32:53,995 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 [2021-12-16 09:32:53,997 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 [2021-12-16 09:32:54,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:32:54,002 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:32:54,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:32:54,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:32:54,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:32:54,003 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:32:54,003 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:32:54,019 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:32:54,027 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-16 09:32:54,027 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-16 09:32:54,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:54,029 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) [2021-12-16 09:32:54,030 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 [2021-12-16 09:32:54,031 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:32:54,031 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:32:54,031 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:32:54,031 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-12-16 09:32:54,075 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 [2021-12-16 09:32:54,076 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:32:54,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:54,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:32:54,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:54,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 09:32:54,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:32:54,165 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 [2021-12-16 09:32:54,165 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) [2021-12-16 09:32:54,182 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. [2021-12-16 09:32:54,182 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 [2021-12-16 09:32:54,184 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) [2021-12-16 09:32:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2021-12-16 09:32:54,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-16 09:32:54,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:54,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-16 09:32:54,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:54,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-16 09:32:54,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:54,185 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2021-12-16 09:32:54,187 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-12-16 09:32:54,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2021-12-16 09:32:54,187 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-12-16 09:32:54,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-12-16 09:32:54,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2021-12-16 09:32:54,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-16 09:32:54,188 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-12-16 09:32:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2021-12-16 09:32:54,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-12-16 09:32:54,191 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) [2021-12-16 09:32:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-12-16 09:32:54,192 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-12-16 09:32:54,192 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-12-16 09:32:54,192 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-16 09:32:54,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2021-12-16 09:32:54,192 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-12-16 09:32:54,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:32:54,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:32:54,192 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:32:54,192 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-16 09:32:54,193 INFO L791 eck$LassoCheckResult]: Stem: 540#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 541#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 542#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 543#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 555#L81 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 556#L30-1 assume !(0 == base2flt_~m#1 % 4294967296); 558#L36-1 assume base2flt_~m#1 % 4294967296 < 16777216; 538#L48-3 [2021-12-16 09:32:54,193 INFO L793 eck$LassoCheckResult]: Loop: 538#L48-3 assume !false; 557#L39-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 537#L48-2 assume base2flt_~m#1 % 4294967296 < 16777216; 538#L48-3 [2021-12-16 09:32:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2021-12-16 09:32:54,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:54,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916623520] [2021-12-16 09:32:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:54,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,199 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,204 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:54,205 INFO L85 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2021-12-16 09:32:54,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:54,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124901529] [2021-12-16 09:32:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:54,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,208 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,210 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:54,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:54,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2021-12-16 09:32:54,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:54,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331934857] [2021-12-16 09:32:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:54,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,217 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,224 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:54,241 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:54,242 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:54,242 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:54,242 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:54,242 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:32:54,242 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,242 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:54,242 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:54,242 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2021-12-16 09:32:54,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:54,242 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:54,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:54,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:54,281 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:54,281 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:32:54,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:54,282 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) [2021-12-16 09:32:54,303 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 [2021-12-16 09:32:54,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:32:54,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:54,358 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 [2021-12-16 09:32:54,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:54,360 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) [2021-12-16 09:32:54,361 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 [2021-12-16 09:32:54,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:32:54,362 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:54,403 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:32:54,406 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 [2021-12-16 09:32:54,407 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:54,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:54,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:54,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:54,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:32:54,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:54,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:54,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2021-12-16 09:32:54,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:54,407 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:54,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:54,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:54,476 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:54,476 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:32:54,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:54,495 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) [2021-12-16 09:32:54,497 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 [2021-12-16 09:32:54,498 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 [2021-12-16 09:32:54,503 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:32:54,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:32:54,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:32:54,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:32:54,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:32:54,504 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:32:54,504 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:32:54,513 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:32:54,515 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-16 09:32:54,515 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-16 09:32:54,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:54,551 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) [2021-12-16 09:32:54,552 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 [2021-12-16 09:32:54,553 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:32:54,553 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:32:54,553 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:32:54,553 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-12-16 09:32:54,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-16 09:32:54,578 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:32:54,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:54,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:32:54,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:54,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 09:32:54,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:54,644 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 [2021-12-16 09:32:54,661 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 [2021-12-16 09:32:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:32:54,686 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 [2021-12-16 09:32:54,686 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) [2021-12-16 09:32:54,695 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. [2021-12-16 09:32:54,696 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 [2021-12-16 09:32:54,696 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) [2021-12-16 09:32:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2021-12-16 09:32:54,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-16 09:32:54,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:54,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-16 09:32:54,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:54,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-16 09:32:54,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:54,697 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2021-12-16 09:32:54,697 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-12-16 09:32:54,698 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2021-12-16 09:32:54,698 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-12-16 09:32:54,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-12-16 09:32:54,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2021-12-16 09:32:54,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-16 09:32:54,698 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2021-12-16 09:32:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2021-12-16 09:32:54,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2021-12-16 09:32:54,702 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) [2021-12-16 09:32:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-12-16 09:32:54,702 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-12-16 09:32:54,702 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-12-16 09:32:54,702 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-16 09:32:54,702 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2021-12-16 09:32:54,703 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-16 09:32:54,703 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:32:54,703 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:32:54,703 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:32:54,703 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-16 09:32:54,703 INFO L791 eck$LassoCheckResult]: Stem: 664#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 665#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 666#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 667#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 681#L81 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 682#L30-1 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 676#L80-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 668#L81-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 656#L30-2 assume !(0 == base2flt_~m#1 % 4294967296); 657#L36-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 680#L58-8 [2021-12-16 09:32:54,704 INFO L793 eck$LassoCheckResult]: Loop: 680#L58-8 assume !false; 673#L59-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 674#L60-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 680#L58-8 [2021-12-16 09:32:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2021-12-16 09:32:54,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:54,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911871014] [2021-12-16 09:32:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:54,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,726 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,735 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:54,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2021-12-16 09:32:54,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:54,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161533750] [2021-12-16 09:32:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:54,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,742 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,750 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:54,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:54,751 INFO L85 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2021-12-16 09:32:54,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:54,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894554280] [2021-12-16 09:32:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:54,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,769 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:54,782 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:54,803 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:54,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:54,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:54,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:54,804 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:32:54,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:54,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:54,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2021-12-16 09:32:54,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:54,804 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:54,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:54,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:54,861 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:54,862 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:32:54,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:54,863 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) [2021-12-16 09:32:54,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:32:54,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:54,899 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 [2021-12-16 09:32:54,907 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-16 09:32:54,907 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-16 09:32:54,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-16 09:32:54,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:54,912 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) [2021-12-16 09:32:54,913 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 [2021-12-16 09:32:54,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:32:54,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:54,936 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 [2021-12-16 09:32:54,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:54,938 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) [2021-12-16 09:32:54,939 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 [2021-12-16 09:32:54,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:32:54,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:54,965 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:32:54,968 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 [2021-12-16 09:32:54,968 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:54,968 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:54,968 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:54,968 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:54,968 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:32:54,968 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:54,968 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:54,968 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:54,968 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2021-12-16 09:32:54,968 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:54,968 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:54,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:54,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:55,018 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:55,018 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:32:55,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:55,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:55,031 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) [2021-12-16 09:32:55,032 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 [2021-12-16 09:32:55,033 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-16 09:32:55,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:32:55,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:32:55,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:32:55,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:32:55,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:32:55,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:32:55,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:32:55,055 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-16 09:32:55,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-16 09:32:55,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:55,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:55,072 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) [2021-12-16 09:32:55,073 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 [2021-12-16 09:32:55,075 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 [2021-12-16 09:32:55,080 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:32:55,080 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:32:55,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:32:55,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:32:55,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:32:55,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:32:55,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:32:55,096 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:32:55,098 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-16 09:32:55,098 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-16 09:32:55,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:55,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:55,099 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) [2021-12-16 09:32:55,105 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:32:55,105 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:32:55,105 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:32:55,105 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-12-16 09:32:55,120 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 [2021-12-16 09:32:55,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-16 09:32:55,122 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:32:55,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:55,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:32:55,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:55,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 09:32:55,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:32:55,173 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 [2021-12-16 09:32:55,173 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) [2021-12-16 09:32:55,176 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. [2021-12-16 09:32:55,176 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 [2021-12-16 09:32:55,177 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) [2021-12-16 09:32:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2021-12-16 09:32:55,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-16 09:32:55,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:55,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2021-12-16 09:32:55,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:55,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2021-12-16 09:32:55,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:55,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2021-12-16 09:32:55,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-16 09:32:55,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2021-12-16 09:32:55,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-12-16 09:32:55,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-12-16 09:32:55,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2021-12-16 09:32:55,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-16 09:32:55,178 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-12-16 09:32:55,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2021-12-16 09:32:55,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-16 09:32:55,179 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) [2021-12-16 09:32:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-12-16 09:32:55,179 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-12-16 09:32:55,179 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-12-16 09:32:55,179 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-16 09:32:55,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2021-12-16 09:32:55,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-16 09:32:55,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 09:32:55,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 09:32:55,180 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:32:55,180 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-16 09:32:55,180 INFO L791 eck$LassoCheckResult]: Stem: 785#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 786#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~ret8#1, main_#t~ret9#1, main_#t~ret10#1, main_#t~ret11#1, main_#t~ret12#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add1~0#1, main_~r_add2~0#1, main_~zero~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~__retres14~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~ea~2#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~eb~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~r_add1~0#1;havoc main_~r_add2~0#1;havoc main_~zero~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~__retres14~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 787#L30 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 788#L80 base2flt_#res#1 := base2flt_~__retres4~0#1; 797#L81 main_#t~ret8#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret8#1;havoc main_#t~ret8#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 798#L30-1 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 795#L80-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 789#L81-1 main_#t~ret9#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret9#1;havoc main_#t~ret9#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 779#L30-2 assume !(0 == base2flt_~m#1 % 4294967296); 780#L36-2 assume base2flt_~m#1 % 4294967296 < 16777216; 778#L48-5 [2021-12-16 09:32:55,180 INFO L793 eck$LassoCheckResult]: Loop: 778#L48-5 assume !false; 802#L39-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 777#L48-4 assume base2flt_~m#1 % 4294967296 < 16777216; 778#L48-5 [2021-12-16 09:32:55,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2021-12-16 09:32:55,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:55,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954217068] [2021-12-16 09:32:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:55,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:55,186 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:55,191 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:55,192 INFO L85 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2021-12-16 09:32:55,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:55,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573489932] [2021-12-16 09:32:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:55,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:55,194 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:55,196 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:55,196 INFO L85 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2021-12-16 09:32:55,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:32:55,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497641085] [2021-12-16 09:32:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:32:55,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:32:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:55,202 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:32:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:32:55,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:32:55,224 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:55,224 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:55,224 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:55,225 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:55,225 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-16 09:32:55,225 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:55,225 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:55,225 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:55,225 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2021-12-16 09:32:55,225 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:55,225 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:55,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:55,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:55,264 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:55,264 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-16 09:32:55,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:55,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:55,266 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) [2021-12-16 09:32:55,267 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 [2021-12-16 09:32:55,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-16 09:32:55,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:55,305 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 [2021-12-16 09:32:55,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:55,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:55,306 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) [2021-12-16 09:32:55,307 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 [2021-12-16 09:32:55,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-16 09:32:55,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-16 09:32:55,338 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-16 09:32:55,343 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 [2021-12-16 09:32:55,343 INFO L210 LassoAnalysis]: Preferences: [2021-12-16 09:32:55,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-16 09:32:55,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-16 09:32:55,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-16 09:32:55,344 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-16 09:32:55,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:55,344 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-16 09:32:55,344 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-16 09:32:55,344 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2021-12-16 09:32:55,344 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-16 09:32:55,344 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-16 09:32:55,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:55,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-16 09:32:55,385 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-16 09:32:55,385 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-16 09:32:55,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:55,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:55,404 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) [2021-12-16 09:32:55,405 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 [2021-12-16 09:32:55,406 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 [2021-12-16 09:32:55,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-16 09:32:55,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-16 09:32:55,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-16 09:32:55,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-16 09:32:55,412 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-16 09:32:55,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-16 09:32:55,413 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-16 09:32:55,443 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-16 09:32:55,445 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-16 09:32:55,446 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-16 09:32:55,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 09:32:55,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:32:55,447 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) [2021-12-16 09:32:55,448 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 [2021-12-16 09:32:55,449 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-16 09:32:55,449 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-16 09:32:55,449 INFO L513 LassoAnalysis]: Proved termination. [2021-12-16 09:32:55,449 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-12-16 09:32:55,475 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 [2021-12-16 09:32:55,475 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-16 09:32:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:32:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:55,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:32:55,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:32:55,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 09:32:55,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:32:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:32:55,534 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 [2021-12-16 09:32:55,534 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) [2021-12-16 09:32:55,537 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. [2021-12-16 09:32:55,537 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 [2021-12-16 09:32:55,538 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) [2021-12-16 09:32:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2021-12-16 09:32:55,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-16 09:32:55,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:55,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2021-12-16 09:32:55,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:55,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2021-12-16 09:32:55,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-16 09:32:55,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2021-12-16 09:32:55,539 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:32:55,539 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2021-12-16 09:32:55,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-16 09:32:55,539 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-16 09:32:55,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-16 09:32:55,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 09:32:55,539 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:32:55,539 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:32:55,539 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 09:32:55,539 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-16 09:32:55,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-16 09:32:55,539 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-16 09:32:55,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-16 09:32:55,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.12 09:32:55 BoogieIcfgContainer [2021-12-16 09:32:55,544 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-16 09:32:55,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 09:32:55,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 09:32:55,545 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 09:32:55,545 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:32:52" (3/4) ... [2021-12-16 09:32:55,547 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 09:32:55,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 09:32:55,547 INFO L158 Benchmark]: Toolchain (without parser) took 3864.66ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 78.8MB in the beginning and 51.7MB in the end (delta: 27.1MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2021-12-16 09:32:55,548 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:32:55,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.60ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 78.8MB in the beginning and 113.5MB in the end (delta: -34.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 09:32:55,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.60ms. Allocated memory is still 140.5MB. Free memory was 113.5MB in the beginning and 111.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 09:32:55,548 INFO L158 Benchmark]: Boogie Preprocessor took 42.88ms. Allocated memory is still 140.5MB. Free memory was 111.4MB in the beginning and 109.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:32:55,548 INFO L158 Benchmark]: RCFGBuilder took 383.94ms. Allocated memory is still 140.5MB. Free memory was 109.9MB in the beginning and 93.9MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-16 09:32:55,549 INFO L158 Benchmark]: BuchiAutomizer took 3072.34ms. Allocated memory is still 140.5MB. Free memory was 93.9MB in the beginning and 51.7MB in the end (delta: 42.2MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2021-12-16 09:32:55,549 INFO L158 Benchmark]: Witness Printer took 2.19ms. Allocated memory is still 140.5MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:32:55,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.60ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 78.8MB in the beginning and 113.5MB in the end (delta: -34.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.60ms. Allocated memory is still 140.5MB. Free memory was 113.5MB in the beginning and 111.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.88ms. Allocated memory is still 140.5MB. Free memory was 111.4MB in the beginning and 109.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 383.94ms. Allocated memory is still 140.5MB. Free memory was 109.9MB in the beginning and 93.9MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 3072.34ms. Allocated memory is still 140.5MB. Free memory was 93.9MB in the beginning and 51.7MB in the end (delta: 42.2MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. * Witness Printer took 2.19ms. Allocated memory is still 140.5MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 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: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 224 mSDsluCounter, 284 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 257 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown 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: 43ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-16 09:32:55,571 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 [2021-12-16 09:32:55,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-16 09:32:55,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE