./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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_5a.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 6029375071a37af887817933cb6d522f173528f0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:45:48,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:45:48,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:45:48,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:45:48,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:45:48,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:45:48,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:45:48,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:45:48,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:45:48,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:45:48,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:45:48,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:45:48,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:45:48,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:45:48,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:45:48,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:45:48,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:45:48,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:45:48,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:45:48,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:45:48,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:45:48,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:45:48,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:45:48,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:45:48,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:45:48,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:45:48,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:45:48,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:45:48,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:45:48,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:45:48,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:45:48,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:45:48,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:45:48,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:45:48,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:45:48,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:45:48,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:45:48,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:45:48,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:45:48,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:45:48,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:45:48,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 06:45:48,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:45:48,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:45:48,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:45:48,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:45:48,651 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:45:48,651 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:45:48,652 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:45:48,652 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:45:48,652 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:45:48,652 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:45:48,653 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:45:48,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:45:48,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:45:48,654 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:45:48,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:45:48,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:45:48,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:45:48,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:45:48,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:45:48,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:45:48,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:45:48,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:45:48,656 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:45:48,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:45:48,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:45:48,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:45:48,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:45:48,658 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:45:48,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:45:48,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:45:48,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:45:48,659 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:45:48,659 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:45:48,660 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 6029375071a37af887817933cb6d522f173528f0 [2020-10-20 06:45:48,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:45:48,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:45:48,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:45:48,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:45:48,890 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:45:48,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-10-20 06:45:48,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded07c4f2/10abf536c6b047bcb4b2ab049a0fcd9c/FLAG3f17db311 [2020-10-20 06:45:49,425 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:45:49,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2020-10-20 06:45:49,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded07c4f2/10abf536c6b047bcb4b2ab049a0fcd9c/FLAG3f17db311 [2020-10-20 06:45:49,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded07c4f2/10abf536c6b047bcb4b2ab049a0fcd9c [2020-10-20 06:45:49,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:45:49,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:45:49,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:45:49,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:45:49,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:45:49,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:45:49" (1/1) ... [2020-10-20 06:45:49,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d29d4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:49, skipping insertion in model container [2020-10-20 06:45:49,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:45:49" (1/1) ... [2020-10-20 06:45:49,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:45:49,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:45:50,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:45:50,102 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:45:50,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:45:50,182 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:45:50,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50 WrapperNode [2020-10-20 06:45:50,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:45:50,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:45:50,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:45:50,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:45:50,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (1/1) ... [2020-10-20 06:45:50,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (1/1) ... [2020-10-20 06:45:50,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:45:50,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:45:50,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:45:50,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:45:50,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (1/1) ... [2020-10-20 06:45:50,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (1/1) ... [2020-10-20 06:45:50,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (1/1) ... [2020-10-20 06:45:50,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (1/1) ... [2020-10-20 06:45:50,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (1/1) ... [2020-10-20 06:45:50,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (1/1) ... [2020-10-20 06:45:50,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (1/1) ... [2020-10-20 06:45:50,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:45:50,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:45:50,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:45:50,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:45:50,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (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 [2020-10-20 06:45:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:45:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:45:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:45:50,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:45:50,840 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:45:50,840 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-20 06:45:50,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:45:50 BoogieIcfgContainer [2020-10-20 06:45:50,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:45:50,843 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:45:50,843 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:45:50,846 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:45:50,847 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:45:50,847 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:45:49" (1/3) ... [2020-10-20 06:45:50,848 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37acb287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:45:50, skipping insertion in model container [2020-10-20 06:45:50,848 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:45:50,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:45:50" (2/3) ... [2020-10-20 06:45:50,849 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@37acb287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:45:50, skipping insertion in model container [2020-10-20 06:45:50,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:45:50,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:45:50" (3/3) ... [2020-10-20 06:45:50,851 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-10-20 06:45:50,893 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:45:50,893 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:45:50,893 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:45:50,893 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:45:50,894 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:45:50,894 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:45:50,894 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:45:50,894 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:45:50,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-10-20 06:45:50,943 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-20 06:45:50,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:50,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:50,949 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:45:50,949 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:50,950 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:45:50,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-10-20 06:45:50,956 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-20 06:45:50,956 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:50,956 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:50,956 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:45:50,957 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:50,964 INFO L794 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 15#L21true assume !(0 == base2flt_~m % 4294967296); 44#L27true assume !(base2flt_~m % 4294967296 < 16777216); 41#L49-2true [2020-10-20 06:45:50,964 INFO L796 eck$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 [2020-10-20 06:45:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-20 06:45:50,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:50,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039579413] [2020-10-20 06:45:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:51,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039579413] [2020-10-20 06:45:51,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:45:51,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:45:51,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382133659] [2020-10-20 06:45:51,169 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:51,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:51,170 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-20 06:45:51,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:51,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367384521] [2020-10-20 06:45:51,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:51,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:51,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:51,243 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:51,302 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:51,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:51,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:51,304 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:51,305 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:51,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:51,305 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:51,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:51,306 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2020-10-20 06:45:51,306 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:51,306 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:51,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:51,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:51,463 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:51,464 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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:51,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:51,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:51,510 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:51,511 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) [2020-10-20 06:45:51,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:51,519 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 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 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 [2020-10-20 06:45:51,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:51,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:51,598 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:51,601 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:51,601 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:51,601 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:51,601 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:51,601 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:51,601 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:51,602 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:51,602 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:51,602 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration1_Loop [2020-10-20 06:45:51,602 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:51,602 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:51,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:51,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:51,723 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:51,728 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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:51,741 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 [2020-10-20 06:45:51,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:51,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:51,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:51,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:51,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:51,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:51,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:51,753 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) [2020-10-20 06:45:51,796 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 [2020-10-20 06:45:51,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:51,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:51,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:51,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:51,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:51,800 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:51,800 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 [2020-10-20 06:45:51,803 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:51,809 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:51,809 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) [2020-10-20 06:45:51,822 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:51,822 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:51,822 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:51,823 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 [2020-10-20 06:45:51,860 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:51,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:51,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:51,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:51,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:51,981 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 [2020-10-20 06:45:51,982 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states. Second operand 3 states. [2020-10-20 06:45:52,054 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. [2020-10-20 06:45:52,054 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 [2020-10-20 06:45:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2020-10-20 06:45:52,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-20 06:45:52,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:52,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:45:52,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:52,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-20 06:45:52,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:52,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 346 transitions. [2020-10-20 06:45:52,074 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-10-20 06:45:52,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 79 states and 120 transitions. [2020-10-20 06:45:52,082 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-10-20 06:45:52,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-20 06:45:52,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-10-20 06:45:52,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:52,084 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-10-20 06:45:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-10-20 06:45:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-10-20 06:45:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 06:45:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-10-20 06:45:52,137 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-10-20 06:45:52,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:52,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:45:52,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:45:52,142 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-10-20 06:45:52,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:52,237 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-10-20 06:45:52,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:45:52,239 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-10-20 06:45:52,240 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-20 06:45:52,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-10-20 06:45:52,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-10-20 06:45:52,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-20 06:45:52,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-10-20 06:45:52,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:52,245 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-20 06:45:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-10-20 06:45:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-20 06:45:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:45:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-10-20 06:45:52,250 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-20 06:45:52,250 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-20 06:45:52,250 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:45:52,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-10-20 06:45:52,253 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-20 06:45:52,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:52,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:52,254 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:52,254 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:52,255 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_~sb~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_~sb~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 [2020-10-20 06:45:52,256 INFO L796 eck$LassoCheckResult]: Loop: 426#L49-5 assume !false; 443#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 438#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 426#L49-5 [2020-10-20 06:45:52,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:52,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-20 06:45:52,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:52,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463153274] [2020-10-20 06:45:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:52,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463153274] [2020-10-20 06:45:52,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:45:52,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:45:52,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365491949] [2020-10-20 06:45:52,343 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:52,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:52,344 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-20 06:45:52,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:52,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031108061] [2020-10-20 06:45:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:52,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:52,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:52,373 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:52,401 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:52,401 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:52,401 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:52,401 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:52,401 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:52,402 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:52,402 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:52,402 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:52,402 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2020-10-20 06:45:52,402 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:52,402 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:52,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:52,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:52,512 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:52,512 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) [2020-10-20 06:45:52,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:52,519 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:52,553 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:52,553 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) [2020-10-20 06:45:52,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:52,561 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) [2020-10-20 06:45:52,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:52,603 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 [2020-10-20 06:45:52,643 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:52,645 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:52,646 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:52,646 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:52,646 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:52,646 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:52,646 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:52,646 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:52,647 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:52,647 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration2_Loop [2020-10-20 06:45:52,647 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:52,647 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:52,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:52,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:52,729 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:52,729 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) [2020-10-20 06:45:52,738 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 [2020-10-20 06:45:52,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:52,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:52,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:52,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:52,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:52,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:52,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:52,747 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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:52,785 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 [2020-10-20 06:45:52,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:52,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:52,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:52,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:52,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:52,789 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:52,789 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:52,792 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:52,795 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:52,795 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) [2020-10-20 06:45:52,806 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:52,806 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:52,806 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:52,807 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 [2020-10-20 06:45:52,841 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:52,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:52,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:52,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:52,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:52,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:53,000 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 [2020-10-20 06:45:53,001 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-10-20 06:45:53,021 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. [2020-10-20 06:45:53,025 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 [2020-10-20 06:45:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-10-20 06:45:53,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:45:53,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:53,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:45:53,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:53,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-20 06:45:53,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:53,027 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-10-20 06:45:53,028 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-20 06:45:53,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-10-20 06:45:53,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-10-20 06:45:53,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-10-20 06:45:53,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-10-20 06:45:53,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:53,032 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-10-20 06:45:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-10-20 06:45:53,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-10-20 06:45:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 06:45:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-10-20 06:45:53,036 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-20 06:45:53,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:45:53,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:45:53,037 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-10-20 06:45:53,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:53,094 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-10-20 06:45:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:45:53,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-10-20 06:45:53,095 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-20 06:45:53,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-10-20 06:45:53,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-20 06:45:53,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-20 06:45:53,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-20 06:45:53,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:53,100 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-20 06:45:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-20 06:45:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-20 06:45:53,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 06:45:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-10-20 06:45:53,105 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-20 06:45:53,105 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-20 06:45:53,105 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:45:53,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-10-20 06:45:53,106 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-20 06:45:53,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:53,107 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:53,107 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:53,108 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:53,108 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_~sb~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_~sb~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 [2020-10-20 06:45:53,108 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 [2020-10-20 06:45:53,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:53,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-20 06:45:53,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:53,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404592969] [2020-10-20 06:45:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:53,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:53,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:53,162 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:53,162 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-20 06:45:53,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:53,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086010165] [2020-10-20 06:45:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:53,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:53,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:53,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:53,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-20 06:45:53,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:53,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839423132] [2020-10-20 06:45:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:53,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:53,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:53,206 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:53,238 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:53,238 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:53,238 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:53,238 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:53,238 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:53,238 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:53,238 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:53,239 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:53,239 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2020-10-20 06:45:53,239 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:53,239 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:53,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:53,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:53,308 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:53,308 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) [2020-10-20 06:45:53,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:53,313 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:53,346 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:53,346 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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:53,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:53,358 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-20 06:45:53,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:53,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:53,428 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:53,430 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:53,431 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:53,431 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:53,431 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:53,431 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:53,431 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:53,431 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:53,431 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:53,431 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration3_Loop [2020-10-20 06:45:53,432 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:53,432 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:53,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:53,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:53,514 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:53,515 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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:53,528 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 [2020-10-20 06:45:53,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:53,530 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:53,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:53,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:53,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:53,533 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:53,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:53,536 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) [2020-10-20 06:45:53,581 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 [2020-10-20 06:45:53,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:53,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:53,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:53,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:53,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:53,588 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:53,588 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 [2020-10-20 06:45:53,594 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:53,597 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:53,597 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) [2020-10-20 06:45:53,614 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:53,614 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:53,614 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:53,614 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:53,645 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:53,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:53,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:53,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:53,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:53,746 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 [2020-10-20 06:45:53,746 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-20 06:45:53,762 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. [2020-10-20 06:45:53,763 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 [2020-10-20 06:45:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:45:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-10-20 06:45:53,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:45:53,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:53,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:45:53,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:53,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-20 06:45:53,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:53,765 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-10-20 06:45:53,767 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:45:53,767 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-10-20 06:45:53,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-10-20 06:45:53,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-10-20 06:45:53,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-20 06:45:53,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:53,770 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-20 06:45:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-20 06:45:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-20 06:45:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:45:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-20 06:45:53,775 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-20 06:45:53,775 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-20 06:45:53,775 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:45:53,775 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-20 06:45:53,776 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:45:53,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:53,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:53,777 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:53,777 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:53,777 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_~sb~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_~sb~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 [2020-10-20 06:45:53,777 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 [2020-10-20 06:45:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:53,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-10-20 06:45:53,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:53,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92093384] [2020-10-20 06:45:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:53,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92093384] [2020-10-20 06:45:53,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:45:53,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:45:53,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046335351] [2020-10-20 06:45:53,839 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:53,840 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-20 06:45:53,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:53,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623131050] [2020-10-20 06:45:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:53,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:53,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:53,862 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:53,888 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:53,889 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:53,889 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:53,889 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:53,889 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:53,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:53,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:53,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:53,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2020-10-20 06:45:53,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:53,889 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:53,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:53,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:54,038 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:54,039 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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:54,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:54,051 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-10-20 06:45:54,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:54,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:54,112 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:54,113 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:54,114 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:54,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:54,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:54,114 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:54,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:54,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:54,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:54,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration4_Loop [2020-10-20 06:45:54,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:54,115 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:54,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:54,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:54,207 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:54,208 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) [2020-10-20 06:45:54,214 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 [2020-10-20 06:45:54,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:54,216 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:54,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:54,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:54,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:54,218 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:54,218 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 [2020-10-20 06:45:54,223 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:54,227 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:54,227 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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:54,247 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:54,249 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:54,249 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:54,249 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-20 06:45:54,275 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:54,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:54,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:54,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:54,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:54,315 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 [2020-10-20 06:45:54,315 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-10-20 06:45:54,326 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. [2020-10-20 06:45:54,327 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 [2020-10-20 06:45:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-10-20 06:45:54,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-20 06:45:54,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:54,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-20 06:45:54,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:54,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-20 06:45:54,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:54,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-10-20 06:45:54,329 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-20 06:45:54,330 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-10-20 06:45:54,330 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-20 06:45:54,330 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-10-20 06:45:54,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-20 06:45:54,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:54,331 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-20 06:45:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-20 06:45:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-20 06:45:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 06:45:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-10-20 06:45:54,333 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-10-20 06:45:54,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:54,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:45:54,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:45:54,334 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-10-20 06:45:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:54,353 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-10-20 06:45:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:45:54,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-10-20 06:45:54,355 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:45:54,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-10-20 06:45:54,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-10-20 06:45:54,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-10-20 06:45:54,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-10-20 06:45:54,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:54,356 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-10-20 06:45:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-10-20 06:45:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-20 06:45:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 06:45:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-20 06:45:54,359 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-20 06:45:54,359 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-20 06:45:54,359 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:45:54,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-10-20 06:45:54,359 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:45:54,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:54,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:54,360 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:54,360 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:54,360 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_~sb~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_~sb~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 [2020-10-20 06:45:54,361 INFO L796 eck$LassoCheckResult]: Loop: 1021#L39-5 assume !false; 1031#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1032#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-10-20 06:45:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:54,361 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-10-20 06:45:54,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:54,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559305305] [2020-10-20 06:45:54,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:54,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559305305] [2020-10-20 06:45:54,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:45:54,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:45:54,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912560988] [2020-10-20 06:45:54,427 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:54,428 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-20 06:45:54,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:54,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577497360] [2020-10-20 06:45:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:54,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:54,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:54,436 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:54,453 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:54,453 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:54,453 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:54,454 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:54,454 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:54,454 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:54,454 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:54,454 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:54,454 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2020-10-20 06:45:54,454 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:54,454 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:54,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:54,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:54,539 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:54,539 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) [2020-10-20 06:45:54,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:54,548 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 [2020-10-20 06:45:54,583 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:54,583 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 [2020-10-20 06:45:54,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:54,587 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 [2020-10-20 06:45:54,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:54,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 06:45:54,643 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:54,644 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:54,644 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:54,644 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:54,644 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:54,645 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:54,645 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:54,645 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:54,645 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:54,645 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration5_Loop [2020-10-20 06:45:54,645 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:54,645 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:54,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:54,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:54,710 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:54,710 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) [2020-10-20 06:45:54,720 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 [2020-10-20 06:45:54,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:54,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:54,722 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:54,722 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:54,722 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:54,723 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:54,723 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 [2020-10-20 06:45:54,730 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) [2020-10-20 06:45:54,761 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 [2020-10-20 06:45:54,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:54,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:54,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:54,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:54,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:54,764 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:54,764 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:54,767 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:54,771 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:54,771 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) [2020-10-20 06:45:54,778 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:54,778 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:54,779 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:54,779 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:54,801 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:54,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:54,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:54,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:54,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:54,895 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 [2020-10-20 06:45:54,896 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-20 06:45:54,919 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. [2020-10-20 06:45:54,922 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 [2020-10-20 06:45:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:45:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-10-20 06:45:54,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-20 06:45:54,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:54,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-20 06:45:54,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:54,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-10-20 06:45:54,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:54,925 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-10-20 06:45:54,925 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-20 06:45:54,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-10-20 06:45:54,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-10-20 06:45:54,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-10-20 06:45:54,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-10-20 06:45:54,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:54,927 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-20 06:45:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-10-20 06:45:54,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-10-20 06:45:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 06:45:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-10-20 06:45:54,932 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-10-20 06:45:54,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:54,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:45:54,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:45:54,933 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-10-20 06:45:54,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:54,997 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-20 06:45:54,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:45:54,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-10-20 06:45:54,999 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:45:54,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-10-20 06:45:54,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-20 06:45:55,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-20 06:45:55,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-20 06:45:55,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:55,000 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-20 06:45:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-20 06:45:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-20 06:45:55,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 06:45:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-10-20 06:45:55,003 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-20 06:45:55,003 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-20 06:45:55,003 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:45:55,003 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-10-20 06:45:55,003 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:45:55,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:55,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:55,004 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:45:55,004 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:55,005 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_~sb~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_~sb~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 [2020-10-20 06:45:55,005 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 [2020-10-20 06:45:55,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:55,005 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-10-20 06:45:55,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:55,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397989288] [2020-10-20 06:45:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:55,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397989288] [2020-10-20 06:45:55,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868684539] [2020-10-20 06:45:55,032 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 [2020-10-20 06:45:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:55,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:55,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:55,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:45:55,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-20 06:45:55,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731564098] [2020-10-20 06:45:55,099 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:55,099 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-10-20 06:45:55,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:55,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749906918] [2020-10-20 06:45:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:55,104 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:55,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:55,108 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:55,128 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:55,128 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:55,129 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:55,129 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:55,129 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:55,129 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:55,129 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:55,129 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:55,129 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2020-10-20 06:45:55,129 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:55,129 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:55,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:55,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:55,214 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:55,215 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) [2020-10-20 06:45:55,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:55,224 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) [2020-10-20 06:45:55,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:55,260 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:55,294 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:55,295 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:55,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:55,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:55,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:55,296 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:55,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:55,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:55,296 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:55,296 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration6_Loop [2020-10-20 06:45:55,296 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:55,296 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:55,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:55,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:55,376 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:55,376 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) [2020-10-20 06:45:55,385 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 [2020-10-20 06:45:55,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:55,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:55,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:55,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:55,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:55,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:55,388 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 [2020-10-20 06:45:55,395 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:55,397 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:55,398 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) [2020-10-20 06:45:55,407 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:55,407 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:55,408 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:55,408 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:55,446 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:55,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:55,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:55,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:55,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:55,521 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 [2020-10-20 06:45:55,521 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-10-20 06:45:55,527 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. [2020-10-20 06:45:55,528 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 [2020-10-20 06:45:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:45:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-10-20 06:45:55,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-10-20 06:45:55,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:55,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-10-20 06:45:55,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:55,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-10-20 06:45:55,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:55,530 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-10-20 06:45:55,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:45:55,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-10-20 06:45:55,531 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-10-20 06:45:55,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-10-20 06:45:55,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-20 06:45:55,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:55,532 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-20 06:45:55,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-20 06:45:55,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-20 06:45:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 06:45:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-20 06:45:55,534 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-20 06:45:55,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:55,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:45:55,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:45:55,534 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-10-20 06:45:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:55,560 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-20 06:45:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:45:55,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-10-20 06:45:55,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:45:55,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-10-20 06:45:55,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-10-20 06:45:55,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-10-20 06:45:55,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-10-20 06:45:55,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:45:55,563 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-20 06:45:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-10-20 06:45:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-20 06:45:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 06:45:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-20 06:45:55,569 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-20 06:45:55,569 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-20 06:45:55,569 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:45:55,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-10-20 06:45:55,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:45:55,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:45:55,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:45:55,570 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] [2020-10-20 06:45:55,570 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:45:55,570 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_~sb~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_~sb~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 [2020-10-20 06:45:55,571 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 [2020-10-20 06:45:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:55,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-10-20 06:45:55,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:55,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277708482] [2020-10-20 06:45:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:55,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277708482] [2020-10-20 06:45:55,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855043686] [2020-10-20 06:45:55,679 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 [2020-10-20 06:45:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:55,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:45:55,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:55,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:45:55,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-20 06:45:55,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86997460] [2020-10-20 06:45:55,871 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:45:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:55,871 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-10-20 06:45:55,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:45:55,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697488198] [2020-10-20 06:45:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:45:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:55,874 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:45:55,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:45:55,881 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:45:55,923 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:55,923 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:55,923 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:55,923 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:55,923 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 06:45:55,923 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:55,923 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:55,924 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:55,924 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2020-10-20 06:45:55,924 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:55,924 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:55,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:55,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:55,982 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:55,982 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) [2020-10-20 06:45:55,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:55,993 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 [2020-10-20 06:45:56,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 06:45:56,027 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) [2020-10-20 06:45:56,031 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 06:45:56,031 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:45:56,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 06:45:56,066 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:56,096 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 06:45:56,097 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:45:56,097 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:45:56,097 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:45:56,097 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:45:56,097 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:45:56,097 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:56,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:45:56,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:45:56,098 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_5a.c.cil.c_Iteration7_Loop [2020-10-20 06:45:56,098 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:45:56,098 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:45:56,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:56,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:45:56,164 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:45:56,164 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) [2020-10-20 06:45:56,177 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 Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:56,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:56,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:56,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:56,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:56,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:56,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:56,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:45:56,183 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) [2020-10-20 06:45:56,215 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 [2020-10-20 06:45:56,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:45:56,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:45:56,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:45:56,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:45:56,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:45:56,219 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:45:56,219 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:56,223 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:45:56,227 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:45:56,227 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) [2020-10-20 06:45:56,242 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:45:56,242 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:45:56,242 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:45:56,242 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:45:56,265 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:45:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:45:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:56,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:45:56,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:45:56,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:45:56,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:45:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:45:56,373 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 [2020-10-20 06:45:56,374 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-20 06:45:56,379 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. [2020-10-20 06:45:56,379 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 [2020-10-20 06:45:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:45:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-10-20 06:45:56,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-20 06:45:56,380 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:56,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-10-20 06:45:56,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:56,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-10-20 06:45:56,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:45:56,381 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-10-20 06:45:56,382 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:45:56,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-10-20 06:45:56,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:45:56,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:45:56,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:45:56,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:56,382 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:56,382 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:56,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:45:56,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:45:56,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:45:56,383 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-10-20 06:45:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:45:56,383 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 06:45:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:45:56,384 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 06:45:56,384 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:45:56,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:45:56,384 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:45:56,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:45:56,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:45:56,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:45:56,384 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:56,384 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:56,385 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:45:56,385 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-20 06:45:56,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:45:56,385 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:45:56,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:45:56,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:45:56 BoogieIcfgContainer [2020-10-20 06:45:56,392 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:45:56,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:45:56,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:45:56,393 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:45:56,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:45:50" (3/4) ... [2020-10-20 06:45:56,396 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:45:56,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:45:56,399 INFO L168 Benchmark]: Toolchain (without parser) took 6624.96 ms. Allocated memory was 35.7 MB in the beginning and 73.4 MB in the end (delta: 37.7 MB). Free memory was 15.7 MB in the beginning and 46.3 MB in the end (delta: -30.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:56,400 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 9.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:45:56,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.86 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 14.8 MB in the beginning and 22.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:56,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.39 ms. Allocated memory is still 44.0 MB. Free memory was 22.5 MB in the beginning and 20.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:56,402 INFO L168 Benchmark]: Boogie Preprocessor took 34.61 ms. Allocated memory is still 44.0 MB. Free memory was 20.0 MB in the beginning and 18.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:56,403 INFO L168 Benchmark]: RCFGBuilder took 575.85 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 18.0 MB in the beginning and 17.5 MB in the end (delta: 479.4 kB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:45:56,403 INFO L168 Benchmark]: BuchiAutomizer took 5549.56 ms. Allocated memory was 46.1 MB in the beginning and 73.4 MB in the end (delta: 27.3 MB). Free memory was 17.5 MB in the beginning and 47.1 MB in the end (delta: -29.6 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:45:56,404 INFO L168 Benchmark]: Witness Printer took 4.27 ms. Allocated memory is still 73.4 MB. Free memory was 47.1 MB in the beginning and 46.3 MB in the end (delta: 835.9 kB). Peak memory consumption was 835.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:45:56,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 9.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 403.86 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 14.8 MB in the beginning and 22.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.39 ms. Allocated memory is still 44.0 MB. Free memory was 22.5 MB in the beginning and 20.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 34.61 ms. Allocated memory is still 44.0 MB. Free memory was 20.0 MB in the beginning and 18.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 575.85 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 18.0 MB in the beginning and 17.5 MB in the end (delta: 479.4 kB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 5549.56 ms. Allocated memory was 46.1 MB in the beginning and 73.4 MB in the end (delta: 27.3 MB). Free memory was 17.5 MB in the beginning and 47.1 MB in the end (delta: -29.6 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 4.27 ms. Allocated memory is still 73.4 MB. Free memory was 47.1 MB in the beginning and 46.3 MB in the end (delta: 835.9 kB). Peak memory consumption was 835.9 kB. Max. memory is 14.3 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 5.5s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.9s. 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, 0.2s 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: 23ms 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...