./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09f813c788ce76f2fed6ff9e53c54c81ca842bfc ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:27:49,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:27:49,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:27:49,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:27:49,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:27:49,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:27:49,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:27:49,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:27:49,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:27:49,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:27:49,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:27:49,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:27:49,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:27:49,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:27:49,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:27:49,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:27:49,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:27:49,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:27:49,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:27:49,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:27:49,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:27:49,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:27:49,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:27:49,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:27:49,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:27:49,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:27:49,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:27:49,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:27:49,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:27:49,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:27:49,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:27:49,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:27:49,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:27:49,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:27:49,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:27:49,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:27:49,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:27:49,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:27:49,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:27:49,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:27:49,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:27:49,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 04:27:49,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:27:49,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:27:49,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:27:49,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:27:49,842 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:27:49,842 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:27:49,843 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:27:49,843 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:27:49,843 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:27:49,843 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:27:49,845 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:27:49,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:27:49,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 04:27:49,846 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:27:49,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:27:49,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 04:27:49,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:27:49,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:27:49,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:27:49,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:27:49,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 04:27:49,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:27:49,848 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:27:49,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:27:49,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:27:49,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:27:49,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:27:49,850 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:27:49,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:27:49,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:27:49,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:27:49,851 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:27:49,853 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:27:49,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09f813c788ce76f2fed6ff9e53c54c81ca842bfc [2020-10-26 04:27:50,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:27:50,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:27:50,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:27:50,381 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:27:50,382 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:27:50,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-10-26 04:27:50,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d985fa222/62b06ae4ffc94648aeefc281511b83f7/FLAGe3e3e7a18 [2020-10-26 04:27:51,259 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:27:51,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-10-26 04:27:51,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d985fa222/62b06ae4ffc94648aeefc281511b83f7/FLAGe3e3e7a18 [2020-10-26 04:27:51,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d985fa222/62b06ae4ffc94648aeefc281511b83f7 [2020-10-26 04:27:51,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:27:51,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:27:51,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:27:51,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:27:51,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:27:51,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:27:51" (1/1) ... [2020-10-26 04:27:51,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f34285a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:51, skipping insertion in model container [2020-10-26 04:27:51,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:27:51" (1/1) ... [2020-10-26 04:27:51,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:27:51,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:27:51,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:27:51,908 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:27:51,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:27:52,000 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:27:52,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52 WrapperNode [2020-10-26 04:27:52,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:27:52,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:27:52,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:27:52,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:27:52,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... [2020-10-26 04:27:52,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... [2020-10-26 04:27:52,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:27:52,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:27:52,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:27:52,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:27:52,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... [2020-10-26 04:27:52,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... [2020-10-26 04:27:52,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... [2020-10-26 04:27:52,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... [2020-10-26 04:27:52,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... [2020-10-26 04:27:52,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... [2020-10-26 04:27:52,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... [2020-10-26 04:27:52,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:27:52,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:27:52,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:27:52,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:27:52,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 04:27:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:27:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:27:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:27:53,090 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:27:53,090 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-26 04:27:53,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:27:53 BoogieIcfgContainer [2020-10-26 04:27:53,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:27:53,094 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:27:53,094 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:27:53,098 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:27:53,100 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:27:53,100 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:27:51" (1/3) ... [2020-10-26 04:27:53,102 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26977fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:27:53, skipping insertion in model container [2020-10-26 04:27:53,102 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:27:53,102 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:27:52" (2/3) ... [2020-10-26 04:27:53,103 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26977fd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:27:53, skipping insertion in model container [2020-10-26 04:27:53,103 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:27:53,103 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:27:53" (3/3) ... [2020-10-26 04:27:53,105 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-10-26 04:27:53,161 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:27:53,161 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:27:53,161 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:27:53,161 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:27:53,161 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:27:53,162 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:27:53,162 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:27:53,162 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:27:53,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-10-26 04:27:53,208 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-26 04:27:53,208 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:53,208 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:53,216 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:27:53,216 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:53,216 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:27:53,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-10-26 04:27:53,232 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-26 04:27:53,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:53,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:53,233 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-26 04:27:53,233 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:53,243 INFO L794 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 15#L21true assume !(0 == base2flt_~m % 4294967296); 44#L27true assume !(base2flt_~m % 4294967296 < 16777216); 41#L49-2true [2020-10-26 04:27:53,243 INFO L796 eck$LassoCheckResult]: Loop: 41#L49-2true assume !false; 64#L50true assume base2flt_~m % 4294967296 >= 33554432; 10#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 41#L49-2true [2020-10-26 04:27:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:53,261 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-26 04:27:53,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:53,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676392483] [2020-10-26 04:27:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:53,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676392483] [2020-10-26 04:27:53,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:27:53,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:27:53,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750655285] [2020-10-26 04:27:53,503 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:27:53,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:53,508 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-26 04:27:53,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:53,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22781954] [2020-10-26 04:27:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:53,545 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:53,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:53,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:53,648 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:53,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:53,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:53,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:53,649 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:53,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:53,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:53,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2020-10-26 04:27:53,651 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:53,651 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:53,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:53,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:53,807 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:53,808 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:53,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:53,818 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,862 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:27:53,863 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:53,878 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:53,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:53,950 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:53,952 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:53,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:53,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:53,953 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:53,953 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:53,953 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:53,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:53,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:53,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2020-10-26 04:27:53,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:53,953 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:53,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:53,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:54,069 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:54,075 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:54,092 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:54,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:54,096 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:54,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:54,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:54,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:54,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:54,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:54,107 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:54,180 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:54,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:54,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:54,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:54,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:54,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:54,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:54,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:54,189 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:54,194 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:54,194 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:54,202 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:54,203 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:54,203 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:54,204 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:54,244 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:54,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:54,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:54,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:54,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:54,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:54,339 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 [2020-10-26 04:27:54,340 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states. Second operand 3 states. [2020-10-26 04:27:54,450 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states.. Second operand 3 states. Result 206 states and 346 transitions. Complement of second has 6 states. [2020-10-26 04:27:54,451 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 [2020-10-26 04:27:54,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2020-10-26 04:27:54,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-26 04:27:54,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:54,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:27:54,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:54,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-26 04:27:54,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:54,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 346 transitions. [2020-10-26 04:27:54,470 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-10-26 04:27:54,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 79 states and 120 transitions. [2020-10-26 04:27:54,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-10-26 04:27:54,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-26 04:27:54,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-10-26 04:27:54,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:54,481 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-10-26 04:27:54,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-10-26 04:27:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-10-26 04:27:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-26 04:27:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-10-26 04:27:54,520 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-10-26 04:27:54,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:27:54,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:27:54,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:27:54,525 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-10-26 04:27:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:27:54,615 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-10-26 04:27:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:27:54,616 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-10-26 04:27:54,617 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-26 04:27:54,618 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-10-26 04:27:54,618 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-10-26 04:27:54,619 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-26 04:27:54,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-10-26 04:27:54,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:27:54,619 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-26 04:27:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-10-26 04:27:54,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-26 04:27:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-26 04:27:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-10-26 04:27:54,623 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-26 04:27:54,623 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-26 04:27:54,623 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:27:54,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-10-26 04:27:54,624 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-26 04:27:54,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:54,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:54,625 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:54,625 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:54,626 INFO L794 eck$LassoCheckResult]: Stem: 459#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 439#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 440#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 436#L71 base2flt_#res := base2flt_~__retres4~0; 437#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 458#L21-1 assume !(0 == base2flt_~m % 4294967296); 425#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 426#L49-5 [2020-10-26 04:27:54,626 INFO L796 eck$LassoCheckResult]: Loop: 426#L49-5 assume !false; 443#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 438#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 426#L49-5 [2020-10-26 04:27:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:54,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-26 04:27:54,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:54,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961409134] [2020-10-26 04:27:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:54,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961409134] [2020-10-26 04:27:54,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:27:54,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 04:27:54,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964340691] [2020-10-26 04:27:54,675 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:27:54,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:54,676 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-26 04:27:54,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:54,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619262571] [2020-10-26 04:27:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:54,685 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:54,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:54,694 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:54,727 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:54,727 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:54,727 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:54,727 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:54,727 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:54,727 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:54,727 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:54,728 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:54,728 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2020-10-26 04:27:54,728 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:54,728 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:54,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:54,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:54,837 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:54,837 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:54,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:54,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:54,878 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:27:54,878 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:54,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:54,883 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:54,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:54,927 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:54,965 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:54,967 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:54,968 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:54,968 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:54,968 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:54,968 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:54,968 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:54,968 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:54,969 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:54,969 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2020-10-26 04:27:54,969 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:54,969 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:54,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:54,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:55,074 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:55,075 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:55,090 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:55,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:55,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:55,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:55,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:55,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:55,097 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:55,098 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:55,101 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:55,141 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:55,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:55,144 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:55,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:55,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:55,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:55,146 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:55,146 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:55,151 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:55,154 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:55,154 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:55,161 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:55,161 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:55,162 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:55,162 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:55,197 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:55,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:55,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:55,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:55,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:55,304 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 [2020-10-26 04:27:55,305 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-10-26 04:27:55,339 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 63 states and 85 transitions. Complement of second has 5 states. [2020-10-26 04:27:55,340 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 [2020-10-26 04:27:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-10-26 04:27:55,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:27:55,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:55,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:55,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:55,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-26 04:27:55,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:55,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-10-26 04:27:55,347 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-26 04:27:55,349 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-10-26 04:27:55,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-10-26 04:27:55,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-10-26 04:27:55,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-10-26 04:27:55,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:55,352 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-10-26 04:27:55,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-10-26 04:27:55,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-10-26 04:27:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 04:27:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-10-26 04:27:55,362 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-26 04:27:55,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:27:55,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:27:55,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:27:55,367 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-10-26 04:27:55,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:27:55,446 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-10-26 04:27:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:27:55,447 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-10-26 04:27:55,448 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-26 04:27:55,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-10-26 04:27:55,452 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-26 04:27:55,453 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-26 04:27:55,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-26 04:27:55,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:27:55,453 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-26 04:27:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-26 04:27:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-26 04:27:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 04:27:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-10-26 04:27:55,463 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-26 04:27:55,463 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-26 04:27:55,463 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 04:27:55,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-10-26 04:27:55,466 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-26 04:27:55,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:55,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:55,469 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:55,469 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:55,470 INFO L794 eck$LassoCheckResult]: Stem: 677#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 658#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 659#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 656#L71 base2flt_#res := base2flt_~__retres4~0; 657#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 676#L21-1 assume !(0 == base2flt_~m % 4294967296); 646#L27-1 assume base2flt_~m % 4294967296 < 16777216; 647#L39-3 [2020-10-26 04:27:55,470 INFO L796 eck$LassoCheckResult]: Loop: 647#L39-3 assume !false; 675#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 667#L39-2 assume base2flt_~m % 4294967296 < 16777216; 647#L39-3 [2020-10-26 04:27:55,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:55,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-26 04:27:55,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:55,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453087122] [2020-10-26 04:27:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:55,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:55,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:55,551 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:55,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:55,552 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-26 04:27:55,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:55,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922059600] [2020-10-26 04:27:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:55,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:55,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:55,563 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:55,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:55,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-26 04:27:55,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:55,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778708839] [2020-10-26 04:27:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:55,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:55,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:55,615 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:55,640 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:55,641 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:55,641 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:55,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:55,641 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:55,641 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:55,641 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:55,641 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:55,641 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2020-10-26 04:27:55,641 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:55,642 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:55,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:55,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:55,740 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:55,740 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:55,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:55,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:55,772 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:27:55,772 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:55,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:55,786 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:55,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:55,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:55,850 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:55,852 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:55,853 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:55,853 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:55,853 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:55,853 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:55,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:55,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:55,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:55,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2020-10-26 04:27:55,854 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:55,854 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:55,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:55,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:55,938 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:55,938 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:55,949 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:55,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:55,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:55,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:55,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:55,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:55,954 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:55,954 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:55,958 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:55,993 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:55,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:55,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:55,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:55,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:55,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:55,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:55,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:56,001 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:56,006 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:56,006 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:56,011 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:56,011 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:56,011 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:56,011 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-10-26 04:27:56,039 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:56,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:56,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:56,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:56,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:56,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:56,182 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 [2020-10-26 04:27:56,182 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-26 04:27:56,195 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 39 states and 50 transitions. Complement of second has 5 states. [2020-10-26 04:27:56,195 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 [2020-10-26 04:27:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:27:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-10-26 04:27:56,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-26 04:27:56,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:56,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-26 04:27:56,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:56,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-26 04:27:56,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:56,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-10-26 04:27:56,199 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-26 04:27:56,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-10-26 04:27:56,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-10-26 04:27:56,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-10-26 04:27:56,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-26 04:27:56,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:56,201 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-26 04:27:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-26 04:27:56,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-26 04:27:56,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-26 04:27:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-26 04:27:56,204 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-26 04:27:56,204 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-26 04:27:56,205 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 04:27:56,205 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-26 04:27:56,205 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-26 04:27:56,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:56,206 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:56,206 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:56,207 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:56,207 INFO L794 eck$LassoCheckResult]: Stem: 802#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 780#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 781#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L71 base2flt_#res := base2flt_~__retres4~0; 779#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 801#L21-1 assume !(0 == base2flt_~m % 4294967296); 768#L27-1 assume base2flt_~m % 4294967296 < 16777216; 769#L39-3 assume !false; 799#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 774#L71-1 base2flt_#res := base2flt_~__retres4~0; 775#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 798#L21-2 assume !(0 == base2flt_~m % 4294967296); 786#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 777#L49-8 [2020-10-26 04:27:56,207 INFO L796 eck$LassoCheckResult]: Loop: 777#L49-8 assume !false; 792#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 776#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 777#L49-8 [2020-10-26 04:27:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:56,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-10-26 04:27:56,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:56,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33417762] [2020-10-26 04:27:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:56,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33417762] [2020-10-26 04:27:56,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:27:56,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 04:27:56,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795544725] [2020-10-26 04:27:56,243 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:27:56,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-26 04:27:56,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:56,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593563354] [2020-10-26 04:27:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:56,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:56,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:56,258 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:56,285 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:56,286 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:56,286 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:56,286 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:56,286 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:56,286 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:56,286 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:56,286 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:56,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2020-10-26 04:27:56,287 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:56,287 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:56,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:56,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:56,399 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:56,399 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:56,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:56,409 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:56,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:56,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:56,495 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:56,500 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:56,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:56,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:56,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:56,500 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:56,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:56,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:56,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:56,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2020-10-26 04:27:56,500 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:56,501 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:56,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:56,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:56,642 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:56,642 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:56,649 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:56,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:56,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:56,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:56,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:56,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:56,653 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:56,653 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:56,656 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:56,661 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:56,661 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:56,667 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:56,668 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:56,668 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:56,668 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:56,702 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:56,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:56,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:56,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:56,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:56,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:56,765 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 [2020-10-26 04:27:56,765 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-10-26 04:27:56,788 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 52 states and 65 transitions. Complement of second has 5 states. [2020-10-26 04:27:56,789 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 [2020-10-26 04:27:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-10-26 04:27:56,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-26 04:27:56,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:56,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-26 04:27:56,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:56,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-26 04:27:56,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:56,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-10-26 04:27:56,792 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-26 04:27:56,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-10-26 04:27:56,793 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-26 04:27:56,793 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-10-26 04:27:56,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-26 04:27:56,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:56,793 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-26 04:27:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-26 04:27:56,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-26 04:27:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 04:27:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-10-26 04:27:56,797 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-10-26 04:27:56,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:27:56,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 04:27:56,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 04:27:56,799 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-10-26 04:27:56,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:27:56,825 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-10-26 04:27:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 04:27:56,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-10-26 04:27:56,827 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-26 04:27:56,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-10-26 04:27:56,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-10-26 04:27:56,828 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-10-26 04:27:56,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-10-26 04:27:56,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:56,829 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-10-26 04:27:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-10-26 04:27:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-26 04:27:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 04:27:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-26 04:27:56,833 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-26 04:27:56,833 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-26 04:27:56,833 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 04:27:56,833 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-10-26 04:27:56,834 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-26 04:27:56,834 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:56,834 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:56,835 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:56,835 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:56,835 INFO L794 eck$LassoCheckResult]: Stem: 1037#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1013#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1014#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1011#L71 base2flt_#res := base2flt_~__retres4~0; 1012#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1036#L21-1 assume !(0 == base2flt_~m % 4294967296); 1000#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1001#L39-3 assume !false; 1035#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1023#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1016#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1006#L71-1 base2flt_#res := base2flt_~__retres4~0; 1007#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1033#L21-2 assume !(0 == base2flt_~m % 4294967296); 1019#L27-2 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-10-26 04:27:56,836 INFO L796 eck$LassoCheckResult]: Loop: 1021#L39-5 assume !false; 1031#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1032#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-10-26 04:27:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:56,837 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-10-26 04:27:56,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:56,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023199283] [2020-10-26 04:27:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:56,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023199283] [2020-10-26 04:27:56,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:27:56,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 04:27:56,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41132554] [2020-10-26 04:27:56,947 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:27:56,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:56,948 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-26 04:27:56,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:56,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218252918] [2020-10-26 04:27:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:56,954 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:56,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:56,959 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:56,985 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:56,985 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:56,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:56,986 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:56,986 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:56,986 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:56,986 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:56,986 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:56,986 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2020-10-26 04:27:56,986 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:56,986 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:56,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:56,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:57,076 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:57,076 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:57,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:57,080 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:57,114 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:27:57,114 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:57,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:57,118 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:57,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:57,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:57,171 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:57,173 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:57,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:57,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:57,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:57,173 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:57,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:57,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:57,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:57,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2020-10-26 04:27:57,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:57,174 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:57,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:57,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:57,254 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:57,254 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:57,265 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:57,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:57,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:57,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:57,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:57,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:57,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:57,269 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:57,273 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:57,300 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:57,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:57,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:57,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:57,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:57,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:57,316 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:57,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:57,326 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:57,329 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:57,329 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:57,333 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:57,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:57,334 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:57,334 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-10-26 04:27:57,355 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:57,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:57,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:57,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:57,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:57,476 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 [2020-10-26 04:27:57,476 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-26 04:27:57,500 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 56 states and 69 transitions. Complement of second has 5 states. [2020-10-26 04:27:57,504 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 [2020-10-26 04:27:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:27:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-10-26 04:27:57,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-26 04:27:57,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:57,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-26 04:27:57,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:57,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-10-26 04:27:57,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:57,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-10-26 04:27:57,509 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-26 04:27:57,510 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-10-26 04:27:57,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-10-26 04:27:57,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-10-26 04:27:57,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-10-26 04:27:57,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:57,514 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-26 04:27:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-10-26 04:27:57,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-10-26 04:27:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-26 04:27:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-10-26 04:27:57,523 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-10-26 04:27:57,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:27:57,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 04:27:57,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-26 04:27:57,525 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-10-26 04:27:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:27:57,617 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-26 04:27:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 04:27:57,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-10-26 04:27:57,619 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-26 04:27:57,621 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-10-26 04:27:57,621 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-26 04:27:57,621 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-26 04:27:57,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-26 04:27:57,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:57,622 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-26 04:27:57,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-26 04:27:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-26 04:27:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-26 04:27:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-10-26 04:27:57,625 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-26 04:27:57,625 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-26 04:27:57,625 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 04:27:57,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-10-26 04:27:57,626 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-26 04:27:57,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:57,627 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:57,627 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:57,628 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:57,628 INFO L794 eck$LassoCheckResult]: Stem: 1297#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1272#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1273#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1270#L71 base2flt_#res := base2flt_~__retres4~0; 1271#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1296#L21-1 assume !(0 == base2flt_~m % 4294967296); 1259#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1260#L39-3 assume !false; 1295#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1282#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1284#L39-3 assume !false; 1294#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1265#L71-1 base2flt_#res := base2flt_~__retres4~0; 1266#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1293#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1261#L71-2 base2flt_#res := base2flt_~__retres4~0; 1262#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1289#L21-3 assume !(0 == base2flt_~m % 4294967296); 1276#L27-3 assume !(base2flt_~m % 4294967296 < 16777216); 1264#L49-11 [2020-10-26 04:27:57,628 INFO L796 eck$LassoCheckResult]: Loop: 1264#L49-11 assume !false; 1281#L50-3 assume base2flt_~m % 4294967296 >= 33554432; 1263#L51-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1264#L49-11 [2020-10-26 04:27:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-10-26 04:27:57,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:57,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830037800] [2020-10-26 04:27:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:57,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830037800] [2020-10-26 04:27:57,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157348336] [2020-10-26 04:27:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:27:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:57,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:57,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:57,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:27:57,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-26 04:27:57,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492233191] [2020-10-26 04:27:57,795 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:27:57,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:57,796 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-10-26 04:27:57,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:57,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896255591] [2020-10-26 04:27:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:57,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:57,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:57,809 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:57,835 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:57,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:57,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:57,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:57,836 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:57,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:57,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:57,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:57,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2020-10-26 04:27:57,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:57,836 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:57,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:57,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:57,951 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:57,951 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:57,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:57,961 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:57,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:57,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:58,019 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:58,021 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:58,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:58,021 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:58,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:58,021 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:58,022 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:58,022 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:58,022 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:58,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2020-10-26 04:27:58,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:58,022 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:58,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:58,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:58,130 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:58,130 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:58,140 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:58,142 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:58,142 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:58,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:58,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:58,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:58,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:58,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:58,148 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:58,153 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:58,153 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:58,157 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:58,157 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:58,157 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:58,157 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-26 04:27:58,178 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:58,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:58,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:58,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:58,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:58,238 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 [2020-10-26 04:27:58,238 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-10-26 04:27:58,251 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 46 states and 59 transitions. Complement of second has 4 states. [2020-10-26 04:27:58,251 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 [2020-10-26 04:27:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:27:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-10-26 04:27:58,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-10-26 04:27:58,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:58,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-10-26 04:27:58,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:58,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-10-26 04:27:58,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:58,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-10-26 04:27:58,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:27:58,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-10-26 04:27:58,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-10-26 04:27:58,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-10-26 04:27:58,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-26 04:27:58,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:58,256 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-26 04:27:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-26 04:27:58,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-26 04:27:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 04:27:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-26 04:27:58,259 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-26 04:27:58,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:27:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:27:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:27:58,260 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-10-26 04:27:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:27:58,339 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-26 04:27:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 04:27:58,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-10-26 04:27:58,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:27:58,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-10-26 04:27:58,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-10-26 04:27:58,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-10-26 04:27:58,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-10-26 04:27:58,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 04:27:58,342 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-26 04:27:58,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-10-26 04:27:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-26 04:27:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 04:27:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-26 04:27:58,350 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-26 04:27:58,350 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-26 04:27:58,350 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-26 04:27:58,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-10-26 04:27:58,351 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-26 04:27:58,351 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:27:58,351 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:27:58,352 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:27:58,353 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:27:58,353 INFO L794 eck$LassoCheckResult]: Stem: 1608#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1586#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1587#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1583#L71 base2flt_#res := base2flt_~__retres4~0; 1584#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1607#L21-1 assume !(0 == base2flt_~m % 4294967296); 1574#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1575#L39-3 assume !false; 1606#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1594#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1595#L39-3 assume !false; 1611#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1613#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1588#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1578#L71-1 base2flt_#res := base2flt_~__retres4~0; 1579#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1604#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1576#L71-2 base2flt_#res := base2flt_~__retres4~0; 1577#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1600#L21-3 assume !(0 == base2flt_~m % 4294967296); 1589#L27-3 assume base2flt_~m % 4294967296 < 16777216; 1590#L39-7 [2020-10-26 04:27:58,354 INFO L796 eck$LassoCheckResult]: Loop: 1590#L39-7 assume !false; 1598#L30-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1599#L39-6 assume base2flt_~m % 4294967296 < 16777216; 1590#L39-7 [2020-10-26 04:27:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:58,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-10-26 04:27:58,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:58,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469369102] [2020-10-26 04:27:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:58,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469369102] [2020-10-26 04:27:58,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116256105] [2020-10-26 04:27:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:27:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:58,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-26 04:27:58,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:58,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:27:58,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-26 04:27:58,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62053831] [2020-10-26 04:27:58,670 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-26 04:27:58,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:58,671 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-10-26 04:27:58,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:27:58,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105337912] [2020-10-26 04:27:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:27:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:58,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:27:58,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:27:58,692 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:27:58,737 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:58,737 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:58,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:58,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:58,737 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 04:27:58,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:58,738 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:58,738 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:58,738 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2020-10-26 04:27:58,738 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:58,738 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:58,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:58,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:58,822 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:58,822 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:58,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:58,834 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:58,861 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 04:27:58,861 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:58,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 04:27:58,867 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:58,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 04:27:58,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-26 04:27:58,930 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 04:27:58,932 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:27:58,932 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:27:58,932 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:27:58,932 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:27:58,932 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:27:58,932 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:58,932 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:27:58,932 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:27:58,932 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2020-10-26 04:27:58,933 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:27:58,933 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:27:58,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:58,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:27:59,046 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:27:59,046 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:27:59,054 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:59,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:59,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:59,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:59,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:59,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:59,059 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:59,059 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:59,062 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:59,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:27:59,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:27:59,089 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 04:27:59,089 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:27:59,089 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:27:59,089 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:27:59,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 04:27:59,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 04:27:59,093 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:27:59,096 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-26 04:27:59,096 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:27:59,098 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 04:27:59,098 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 04:27:59,099 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:27:59,099 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-10-26 04:27:59,120 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 04:27:59,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:27:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:59,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 04:27:59,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:27:59,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 04:27:59,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:27:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:27:59,243 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 [2020-10-26 04:27:59,243 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-26 04:27:59,258 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 44 states and 54 transitions. Complement of second has 4 states. [2020-10-26 04:27:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 04:27:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-26 04:27:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-10-26 04:27:59,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-26 04:27:59,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:59,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-10-26 04:27:59,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:59,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-10-26 04:27:59,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:27:59,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-10-26 04:27:59,262 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:27:59,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-10-26 04:27:59,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:27:59,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:27:59,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:27:59,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:27:59,263 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:59,263 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:59,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:27:59,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 04:27:59,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:27:59,264 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-10-26 04:27:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:27:59,265 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-26 04:27:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 04:27:59,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-26 04:27:59,265 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:27:59,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 04:27:59,266 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:27:59,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:27:59,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:27:59,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:27:59,266 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:59,266 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:59,266 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:27:59,267 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-26 04:27:59,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:27:59,267 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:27:59,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:27:59,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:27:59 BoogieIcfgContainer [2020-10-26 04:27:59,275 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:27:59,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:27:59,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:27:59,278 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:27:59,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:27:53" (3/4) ... [2020-10-26 04:27:59,284 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:27:59,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:27:59,289 INFO L168 Benchmark]: Toolchain (without parser) took 7702.43 ms. Allocated memory was 50.3 MB in the beginning and 111.1 MB in the end (delta: 60.8 MB). Free memory was 27.1 MB in the beginning and 62.7 MB in the end (delta: -35.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:59,294 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:27:59,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.90 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 27.4 MB in the end (delta: -929.7 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:59,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.57 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 25.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:59,305 INFO L168 Benchmark]: Boogie Preprocessor took 78.04 ms. Allocated memory is still 50.3 MB. Free memory was 25.2 MB in the beginning and 23.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:59,306 INFO L168 Benchmark]: RCFGBuilder took 914.05 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 23.5 MB in the beginning and 33.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:59,308 INFO L168 Benchmark]: BuchiAutomizer took 6181.62 ms. Allocated memory was 62.9 MB in the beginning and 111.1 MB in the end (delta: 48.2 MB). Free memory was 33.6 MB in the beginning and 63.7 MB in the end (delta: -30.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:27:59,309 INFO L168 Benchmark]: Witness Printer took 7.43 ms. Allocated memory is still 111.1 MB. Free memory was 63.7 MB in the beginning and 62.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:27:59,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 410.90 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 27.4 MB in the end (delta: -929.7 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.57 ms. Allocated memory is still 50.3 MB. Free memory was 27.4 MB in the beginning and 25.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.04 ms. Allocated memory is still 50.3 MB. Free memory was 25.2 MB in the beginning and 23.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 914.05 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 23.5 MB in the beginning and 33.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6181.62 ms. Allocated memory was 62.9 MB in the beginning and 111.1 MB in the end (delta: 48.2 MB). Free memory was 33.6 MB in the beginning and 63.7 MB in the end (delta: -30.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.43 ms. Allocated memory is still 111.1 MB. Free memory was 63.7 MB in the beginning and 62.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 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. 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. 6 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.1s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.4s. Construction of modules took 0.3s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 43 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 528 SDtfs, 345 SDslu, 149 SDs, 0 SdLazy, 176 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...