./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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_2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09f813c788ce76f2fed6ff9e53c54c81ca842bfc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:52:48,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:52:48,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:52:48,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:52:48,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:52:48,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:52:48,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:52:48,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:52:48,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:52:48,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:52:48,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:52:48,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:52:48,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:52:48,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:52:48,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:52:48,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:52:48,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:52:48,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:52:48,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:52:48,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:52:48,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:52:48,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:52:48,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:52:48,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:52:48,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:52:48,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:52:48,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:52:48,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:52:48,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:52:48,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:52:48,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:52:48,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:52:48,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:52:48,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:52:48,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:52:48,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:52:48,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:52:48,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:52:48,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:52:48,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:52:48,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:52:48,966 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 18:52:48,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:52:48,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:52:48,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:52:48,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:52:48,993 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:52:48,994 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:52:48,994 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:52:48,994 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:52:48,994 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:52:48,995 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:52:48,995 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:52:48,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:52:48,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:52:48,996 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:52:48,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:52:48,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:52:48,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:52:48,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:52:48,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:52:48,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:52:48,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:52:48,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:52:48,998 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:52:48,998 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:52:48,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:52:48,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:52:48,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:52:49,000 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:52:49,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:52:49,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:52:49,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:52:49,001 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:52:49,002 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:52:49,002 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 -> 09f813c788ce76f2fed6ff9e53c54c81ca842bfc [2020-10-19 18:52:49,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:52:49,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:52:49,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:52:49,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:52:49,355 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:52:49,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-10-19 18:52:49,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a55898c/042d81f80fae471786f23dc879b6c8c7/FLAG1afb00ff3 [2020-10-19 18:52:49,826 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:52:49,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-10-19 18:52:49,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a55898c/042d81f80fae471786f23dc879b6c8c7/FLAG1afb00ff3 [2020-10-19 18:52:50,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a55898c/042d81f80fae471786f23dc879b6c8c7 [2020-10-19 18:52:50,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:52:50,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:52:50,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:52:50,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:52:50,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:52:50,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f067e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50, skipping insertion in model container [2020-10-19 18:52:50,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:52:50,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:52:50,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:52:50,495 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:52:50,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:52:50,621 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:52:50,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50 WrapperNode [2020-10-19 18:52:50,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:52:50,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:52:50,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:52:50,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:52:50,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:52:50,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:52:50,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:52:50,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:52:50,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (1/1) ... [2020-10-19 18:52:50,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:52:50,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:52:50,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:52:50,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:52:50,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (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 [2020-10-19 18:52:50,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:52:50,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:52:50,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:52:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:52:51,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:52:51,273 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-19 18:52:51,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:51 BoogieIcfgContainer [2020-10-19 18:52:51,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:52:51,276 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:52:51,276 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:52:51,279 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:52:51,280 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:51,280 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:52:50" (1/3) ... [2020-10-19 18:52:51,281 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@446a3ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:52:51, skipping insertion in model container [2020-10-19 18:52:51,281 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:51,281 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:50" (2/3) ... [2020-10-19 18:52:51,282 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@446a3ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:52:51, skipping insertion in model container [2020-10-19 18:52:51,282 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:51,282 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:51" (3/3) ... [2020-10-19 18:52:51,284 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-10-19 18:52:51,331 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:52:51,332 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:52:51,332 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:52:51,332 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:52:51,332 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:52:51,332 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:52:51,333 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:52:51,333 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:52:51,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-10-19 18:52:51,372 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-19 18:52:51,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:51,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:51,378 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:52:51,379 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:51,379 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:52:51,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-10-19 18:52:51,386 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-10-19 18:52:51,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:51,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:51,386 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:52:51,388 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:51,394 INFO L794 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 15#L21true assume !(0 == base2flt_~m % 4294967296); 44#L27true assume !(base2flt_~m % 4294967296 < 16777216); 41#L49-2true [2020-10-19 18:52:51,394 INFO L796 eck$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 [2020-10-19 18:52:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:51,399 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-19 18:52:51,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:51,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096085728] [2020-10-19 18:52:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:51,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096085728] [2020-10-19 18:52:51,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:51,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:52:51,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322422910] [2020-10-19 18:52:51,606 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:51,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:51,607 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-19 18:52:51,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:51,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283488064] [2020-10-19 18:52:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:51,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:51,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:51,648 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:51,695 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:51,696 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:51,696 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:51,696 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:51,696 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:51,696 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:51,697 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:51,697 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:51,697 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2020-10-19 18:52:51,697 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:51,697 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:51,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:51,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:51,849 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:51,850 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:51,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:51,858 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:51,901 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:51,901 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) [2020-10-19 18:52:51,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:51,912 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) [2020-10-19 18:52:51,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:51,956 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:51,986 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:51,987 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:51,988 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:51,988 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:51,988 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:51,988 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:51,988 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:51,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:51,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:51,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2020-10-19 18:52:51,989 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:51,989 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:51,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:52,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:52,112 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:52,118 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:52,127 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:52,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:52,130 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:52,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:52,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:52,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:52,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:52,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:52,140 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:52,174 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 [2020-10-19 18:52:52,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:52,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:52,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:52,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:52,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:52,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:52,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:52,187 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:52,210 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:52,210 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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:52,221 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:52,221 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:52,221 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:52,222 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-10-19 18:52:52,259 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:52,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:52,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:52,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:52,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:52,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:52,358 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 [2020-10-19 18:52:52,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states. Second operand 3 states. [2020-10-19 18:52:52,436 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. [2020-10-19 18:52:52,437 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 [2020-10-19 18:52:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2020-10-19 18:52:52,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-19 18:52:52,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:52,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:52,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:52,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-19 18:52:52,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:52,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 346 transitions. [2020-10-19 18:52:52,464 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-10-19 18:52:52,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 79 states and 120 transitions. [2020-10-19 18:52:52,472 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-10-19 18:52:52,473 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-19 18:52:52,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-10-19 18:52:52,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:52,474 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-10-19 18:52:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-10-19 18:52:52,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-10-19 18:52:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:52:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-10-19 18:52:52,510 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-10-19 18:52:52,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:52,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:52:52,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:52:52,514 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-10-19 18:52:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:52,587 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-10-19 18:52:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:52:52,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-10-19 18:52:52,589 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-19 18:52:52,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-10-19 18:52:52,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-10-19 18:52:52,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-19 18:52:52,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-10-19 18:52:52,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:52,591 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-19 18:52:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-10-19 18:52:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-19 18:52:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:52:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-10-19 18:52:52,595 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-19 18:52:52,595 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-19 18:52:52,595 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:52:52,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-10-19 18:52:52,596 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-19 18:52:52,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:52,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:52,597 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:52,597 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:52,598 INFO L794 eck$LassoCheckResult]: Stem: 459#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 439#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 440#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 436#L71 base2flt_#res := base2flt_~__retres4~0; 437#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 458#L21-1 assume !(0 == base2flt_~m % 4294967296); 425#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 426#L49-5 [2020-10-19 18:52:52,598 INFO L796 eck$LassoCheckResult]: Loop: 426#L49-5 assume !false; 443#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 438#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 426#L49-5 [2020-10-19 18:52:52,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:52,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-19 18:52:52,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:52,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337732074] [2020-10-19 18:52:52,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:52,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337732074] [2020-10-19 18:52:52,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:52,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:52:52,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622701140] [2020-10-19 18:52:52,667 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:52,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:52,667 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-19 18:52:52,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:52,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453350761] [2020-10-19 18:52:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:52,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:52,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:52,684 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:52,708 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:52,708 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:52,708 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:52,708 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:52,709 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:52,709 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:52,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:52,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:52,709 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2020-10-19 18:52:52,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:52,710 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:52,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:52,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:52,815 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:52,815 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) [2020-10-19 18:52:52,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:52,827 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 [2020-10-19 18:52:52,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:52,868 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) [2020-10-19 18:52:52,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:52,884 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) [2020-10-19 18:52:52,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:52,933 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 [2020-10-19 18:52:52,971 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:52,975 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:52,976 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:52,976 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:52,976 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:52,977 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:52,977 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:52,977 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:52,977 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:52,977 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2020-10-19 18:52:52,977 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:52,978 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:52,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:52,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:53,085 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:53,086 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:53,093 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 [2020-10-19 18:52:53,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:53,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:53,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:53,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:53,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:53,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:53,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:53,110 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:53,156 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 [2020-10-19 18:52:53,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:53,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:53,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:53,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:53,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:53,161 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:53,161 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:53,164 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:53,168 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:53,169 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) [2020-10-19 18:52:53,180 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:53,180 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:53,180 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:53,181 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 [2020-10-19 18:52:53,219 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:53,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:53,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:53,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:53,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:53,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:53,284 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 [2020-10-19 18:52:53,284 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-10-19 18:52:53,310 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. [2020-10-19 18:52:53,314 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 [2020-10-19 18:52:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-10-19 18:52:53,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:53,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:53,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:52:53,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:53,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:52:53,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:53,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-10-19 18:52:53,317 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-19 18:52:53,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-10-19 18:52:53,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-10-19 18:52:53,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-10-19 18:52:53,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-10-19 18:52:53,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:53,320 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-10-19 18:52:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-10-19 18:52:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-10-19 18:52:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:52:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-10-19 18:52:53,328 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-10-19 18:52:53,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:53,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:52:53,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:52:53,329 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-10-19 18:52:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:53,394 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-10-19 18:52:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:52:53,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-10-19 18:52:53,395 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:52:53,396 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-10-19 18:52:53,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-19 18:52:53,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-19 18:52:53,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-19 18:52:53,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:53,397 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-19 18:52:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-19 18:52:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-19 18:52:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-19 18:52:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-10-19 18:52:53,402 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-19 18:52:53,402 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-10-19 18:52:53,402 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:52:53,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-10-19 18:52:53,405 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:52:53,405 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:53,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:53,406 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:53,406 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:53,406 INFO L794 eck$LassoCheckResult]: Stem: 677#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 658#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 659#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 656#L71 base2flt_#res := base2flt_~__retres4~0; 657#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 676#L21-1 assume !(0 == base2flt_~m % 4294967296); 646#L27-1 assume base2flt_~m % 4294967296 < 16777216; 647#L39-3 [2020-10-19 18:52:53,407 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 [2020-10-19 18:52:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:53,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-19 18:52:53,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:53,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369754724] [2020-10-19 18:52:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:53,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:53,474 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:53,480 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:53,481 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-19 18:52:53,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:53,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138713713] [2020-10-19 18:52:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:53,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:53,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:53,490 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:53,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-19 18:52:53,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:53,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753853186] [2020-10-19 18:52:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:53,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:53,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:53,525 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:53,547 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:53,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:53,548 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:53,548 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:53,548 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:53,548 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:53,548 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:53,548 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:53,549 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2020-10-19 18:52:53,549 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:53,549 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:53,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:53,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:53,616 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:53,616 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:53,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:53,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:52:53,654 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:53,654 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 [2020-10-19 18:52:53,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:53,665 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 [2020-10-19 18:52:53,695 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:53,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:52:53,720 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:53,722 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:53,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:53,722 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:53,722 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:53,722 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:53,723 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:53,723 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:53,723 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:53,723 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2020-10-19 18:52:53,723 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:53,724 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:53,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:53,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:53,817 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:53,817 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:53,825 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 [2020-10-19 18:52:53,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:53,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:53,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:53,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:53,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:53,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:53,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:53,833 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) [2020-10-19 18:52:53,871 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 [2020-10-19 18:52:53,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:53,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:53,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:53,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:53,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:53,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:53,875 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 [2020-10-19 18:52:53,879 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:53,882 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:53,882 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) [2020-10-19 18:52:53,940 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:53,940 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:53,940 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:53,940 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 [2020-10-19 18:52:53,990 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:54,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:54,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:54,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:54,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:54,071 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 [2020-10-19 18:52:54,071 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-19 18:52:54,081 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. [2020-10-19 18:52:54,082 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 [2020-10-19 18:52:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:52:54,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-10-19 18:52:54,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:54,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:54,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:52:54,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:54,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:52:54,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:54,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-10-19 18:52:54,084 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:52:54,085 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-10-19 18:52:54,085 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-10-19 18:52:54,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-10-19 18:52:54,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-10-19 18:52:54,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:54,086 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-10-19 18:52:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-10-19 18:52:54,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-19 18:52:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:52:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-19 18:52:54,088 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 18:52:54,089 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 18:52:54,089 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:52:54,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-19 18:52:54,089 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:52:54,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:54,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:54,090 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:54,090 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:54,090 INFO L794 eck$LassoCheckResult]: Stem: 802#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 780#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 781#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L71 base2flt_#res := base2flt_~__retres4~0; 779#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 801#L21-1 assume !(0 == base2flt_~m % 4294967296); 768#L27-1 assume base2flt_~m % 4294967296 < 16777216; 769#L39-3 assume !false; 799#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 774#L71-1 base2flt_#res := base2flt_~__retres4~0; 775#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 798#L21-2 assume !(0 == base2flt_~m % 4294967296); 786#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 777#L49-8 [2020-10-19 18:52:54,091 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 [2020-10-19 18:52:54,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:54,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-10-19 18:52:54,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:54,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111162016] [2020-10-19 18:52:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:54,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111162016] [2020-10-19 18:52:54,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:54,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:52:54,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344580452] [2020-10-19 18:52:54,121 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:54,122 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-19 18:52:54,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:54,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623301055] [2020-10-19 18:52:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:54,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:54,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:54,133 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:54,161 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:54,161 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:54,161 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:54,161 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:54,161 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:54,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:54,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:54,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:54,162 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2020-10-19 18:52:54,162 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:54,162 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:54,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:54,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:54,242 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:54,242 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:54,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:54,246 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:54,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:54,302 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:54,338 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:54,340 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:54,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:54,340 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:54,341 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:54,341 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:54,341 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:54,341 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:54,341 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:54,341 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2020-10-19 18:52:54,341 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:54,341 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:54,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:54,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:54,420 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:54,420 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) [2020-10-19 18:52:54,432 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 [2020-10-19 18:52:54,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:54,434 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:54,434 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:54,434 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:54,434 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:54,435 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:54,435 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 [2020-10-19 18:52:54,437 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:54,440 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:54,440 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:54,445 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:54,445 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:54,446 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:54,446 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:54,473 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:54,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:54,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:54,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:54,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:54,512 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 [2020-10-19 18:52:54,512 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-10-19 18:52:54,524 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. [2020-10-19 18:52:54,524 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 [2020-10-19 18:52:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-10-19 18:52:54,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-19 18:52:54,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:54,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-10-19 18:52:54,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:54,526 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-10-19 18:52:54,526 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:54,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-10-19 18:52:54,527 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:52:54,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-10-19 18:52:54,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-10-19 18:52:54,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-10-19 18:52:54,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-19 18:52:54,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:54,528 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-19 18:52:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-19 18:52:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-19 18:52:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:52:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-10-19 18:52:54,531 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-10-19 18:52:54,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:54,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:52:54,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:52:54,532 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-10-19 18:52:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:54,552 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-10-19 18:52:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:52:54,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-10-19 18:52:54,553 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:52:54,554 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-10-19 18:52:54,554 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-10-19 18:52:54,554 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-10-19 18:52:54,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-10-19 18:52:54,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:54,555 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-10-19 18:52:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-10-19 18:52:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-19 18:52:54,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:52:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-19 18:52:54,558 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-19 18:52:54,558 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-19 18:52:54,558 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:52:54,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-10-19 18:52:54,558 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:52:54,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:54,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:54,559 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:54,559 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:54,560 INFO L794 eck$LassoCheckResult]: Stem: 1037#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1013#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1014#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1011#L71 base2flt_#res := base2flt_~__retres4~0; 1012#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1036#L21-1 assume !(0 == base2flt_~m % 4294967296); 1000#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1001#L39-3 assume !false; 1035#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1023#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1016#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1006#L71-1 base2flt_#res := base2flt_~__retres4~0; 1007#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1033#L21-2 assume !(0 == base2flt_~m % 4294967296); 1019#L27-2 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-10-19 18:52:54,560 INFO L796 eck$LassoCheckResult]: Loop: 1021#L39-5 assume !false; 1031#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1032#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-10-19 18:52:54,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:54,560 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-10-19 18:52:54,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:54,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902892983] [2020-10-19 18:52:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:54,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902892983] [2020-10-19 18:52:54,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:54,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:52:54,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256743379] [2020-10-19 18:52:54,618 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:54,618 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-19 18:52:54,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:54,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708386785] [2020-10-19 18:52:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:54,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:54,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:54,626 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:54,646 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:54,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:54,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:54,647 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:54,647 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:54,647 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:54,647 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:54,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:54,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2020-10-19 18:52:54,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:54,648 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:54,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:54,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:54,714 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:54,714 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) [2020-10-19 18:52:54,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:54,718 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 [2020-10-19 18:52:54,753 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:54,753 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) [2020-10-19 18:52:54,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:54,758 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:54,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:54,793 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:54,820 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:54,822 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:54,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:54,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:54,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:54,822 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:54,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:54,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:54,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:54,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2020-10-19 18:52:54,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:54,823 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:54,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:54,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:54,896 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:54,896 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) [2020-10-19 18:52:54,904 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 [2020-10-19 18:52:54,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:54,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:54,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:54,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:54,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:54,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:54,908 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 [2020-10-19 18:52:54,913 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) [2020-10-19 18:52:54,950 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 [2020-10-19 18:52:54,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:54,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:54,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:54,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:54,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:54,953 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:54,953 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 [2020-10-19 18:52:54,955 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:54,961 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:54,961 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) [2020-10-19 18:52:54,968 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:54,968 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:54,969 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:54,969 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 [2020-10-19 18:52:54,999 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:55,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:55,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:55,063 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 [2020-10-19 18:52:55,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-10-19 18:52:55,075 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. [2020-10-19 18:52:55,075 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 [2020-10-19 18:52:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:52:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-10-19 18:52:55,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-19 18:52:55,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:55,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-19 18:52:55,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:55,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-10-19 18:52:55,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:55,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-10-19 18:52:55,079 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:52:55,079 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-10-19 18:52:55,079 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-10-19 18:52:55,080 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-10-19 18:52:55,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-10-19 18:52:55,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:55,081 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-19 18:52:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-10-19 18:52:55,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-10-19 18:52:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-19 18:52:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-10-19 18:52:55,084 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-10-19 18:52:55,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:55,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:52:55,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:52:55,085 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-10-19 18:52:55,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:55,148 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-10-19 18:52:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:52:55,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-10-19 18:52:55,150 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:52:55,150 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-10-19 18:52:55,150 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-10-19 18:52:55,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-19 18:52:55,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-10-19 18:52:55,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:55,151 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-19 18:52:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-10-19 18:52:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-19 18:52:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-19 18:52:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-10-19 18:52:55,154 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-19 18:52:55,154 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-19 18:52:55,154 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:52:55,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-10-19 18:52:55,155 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:52:55,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:55,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:55,156 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:55,156 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:55,157 INFO L794 eck$LassoCheckResult]: Stem: 1297#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1272#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1273#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1270#L71 base2flt_#res := base2flt_~__retres4~0; 1271#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1296#L21-1 assume !(0 == base2flt_~m % 4294967296); 1259#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1260#L39-3 assume !false; 1295#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1282#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1284#L39-3 assume !false; 1294#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1265#L71-1 base2flt_#res := base2flt_~__retres4~0; 1266#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1293#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1261#L71-2 base2flt_#res := base2flt_~__retres4~0; 1262#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1289#L21-3 assume !(0 == base2flt_~m % 4294967296); 1276#L27-3 assume !(base2flt_~m % 4294967296 < 16777216); 1264#L49-11 [2020-10-19 18:52:55,157 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 [2020-10-19 18:52:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-10-19 18:52:55,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:55,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422090648] [2020-10-19 18:52:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:55,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422090648] [2020-10-19 18:52:55,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917125941] [2020-10-19 18:52:55,190 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 [2020-10-19 18:52:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:55,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:55,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:52:55,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-19 18:52:55,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301143791] [2020-10-19 18:52:55,249 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:55,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,250 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-10-19 18:52:55,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:55,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258670132] [2020-10-19 18:52:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:55,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:55,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:55,264 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:55,289 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:55,289 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:55,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:55,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:55,290 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:55,290 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,290 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:55,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:55,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2020-10-19 18:52:55,292 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:55,292 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:55,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,394 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:55,394 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) [2020-10-19 18:52:55,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:55,398 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) [2020-10-19 18:52:55,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:55,436 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 [2020-10-19 18:52:55,472 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:55,474 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:55,474 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:55,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:55,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:55,474 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:55,475 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,475 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:55,475 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:55,475 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2020-10-19 18:52:55,475 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:55,475 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:55,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,557 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:55,558 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) [2020-10-19 18:52:55,563 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 [2020-10-19 18:52:55,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:55,564 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:55,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:55,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:55,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:55,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:55,566 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 [2020-10-19 18:52:55,574 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:55,577 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:55,578 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) [2020-10-19 18:52:55,582 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:55,582 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:55,582 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:55,582 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 [2020-10-19 18:52:55,612 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:55,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:55,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:55,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:55,657 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 [2020-10-19 18:52:55,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-10-19 18:52:55,668 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. [2020-10-19 18:52:55,669 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 [2020-10-19 18:52:55,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-10-19 18:52:55,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-10-19 18:52:55,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:55,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-10-19 18:52:55,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:55,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-10-19 18:52:55,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:55,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-10-19 18:52:55,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:52:55,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-10-19 18:52:55,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-10-19 18:52:55,675 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-10-19 18:52:55,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-19 18:52:55,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:55,676 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-19 18:52:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-19 18:52:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-19 18:52:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:52:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-19 18:52:55,679 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-19 18:52:55,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:55,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:52:55,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:52:55,680 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-10-19 18:52:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:55,708 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-19 18:52:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:52:55,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-10-19 18:52:55,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:52:55,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-10-19 18:52:55,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-10-19 18:52:55,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-10-19 18:52:55,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-10-19 18:52:55,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:55,711 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-19 18:52:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-10-19 18:52:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-19 18:52:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:52:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-19 18:52:55,713 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-19 18:52:55,713 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-19 18:52:55,713 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 18:52:55,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-10-19 18:52:55,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:52:55,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:55,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:55,715 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] [2020-10-19 18:52:55,715 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:55,715 INFO L794 eck$LassoCheckResult]: Stem: 1608#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1586#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1587#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1583#L71 base2flt_#res := base2flt_~__retres4~0; 1584#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1607#L21-1 assume !(0 == base2flt_~m % 4294967296); 1574#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1575#L39-3 assume !false; 1606#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1594#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1595#L39-3 assume !false; 1611#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1613#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1588#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1578#L71-1 base2flt_#res := base2flt_~__retres4~0; 1579#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1604#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1576#L71-2 base2flt_#res := base2flt_~__retres4~0; 1577#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1600#L21-3 assume !(0 == base2flt_~m % 4294967296); 1589#L27-3 assume base2flt_~m % 4294967296 < 16777216; 1590#L39-7 [2020-10-19 18:52:55,715 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 [2020-10-19 18:52:55,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-10-19 18:52:55,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:55,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098395342] [2020-10-19 18:52:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:55,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098395342] [2020-10-19 18:52:55,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696570206] [2020-10-19 18:52:55,783 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 [2020-10-19 18:52:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:52:55,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:55,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:52:55,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-19 18:52:55,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835934709] [2020-10-19 18:52:55,882 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,883 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-10-19 18:52:55,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:55,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972179330] [2020-10-19 18:52:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:55,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:55,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:55,890 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:55,909 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:55,909 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:55,909 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:55,909 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:55,909 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:55,909 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:55,910 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:55,910 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2020-10-19 18:52:55,910 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:55,910 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:55,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:55,979 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:55,980 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) [2020-10-19 18:52:55,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:55,992 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 [2020-10-19 18:52:56,020 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:56,020 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:56,025 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:56,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:56,065 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 [2020-10-19 18:52:56,099 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:56,101 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:56,101 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:56,101 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:56,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:56,101 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:56,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:56,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:56,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2020-10-19 18:52:56,102 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:56,102 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:56,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:56,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:52:56,166 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:56,166 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) [2020-10-19 18:52:56,173 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 [2020-10-19 18:52:56,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:56,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:56,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:56,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:56,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:56,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:56,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,179 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) [2020-10-19 18:52:56,211 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,212 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:56,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:56,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:56,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:56,213 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:56,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:56,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:56,217 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:56,219 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:56,219 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,221 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:56,221 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:56,222 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:56,222 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-10-19 18:52:56,242 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:56,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:56,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:56,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:56,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:52:56,319 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 [2020-10-19 18:52:56,319 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-10-19 18:52:56,329 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. [2020-10-19 18:52:56,329 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 [2020-10-19 18:52:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:52:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-10-19 18:52:56,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-19 18:52:56,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:56,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-10-19 18:52:56,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:56,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-10-19 18:52:56,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:56,331 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-10-19 18:52:56,332 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:52:56,333 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-10-19 18:52:56,333 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:52:56,333 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:52:56,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:52:56,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:56,333 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:52:56,333 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:52:56,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:56,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:52:56,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:52:56,334 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-10-19 18:52:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:56,334 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-19 18:52:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 18:52:56,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-19 18:52:56,335 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:52:56,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:52:56,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:52:56,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:52:56,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:52:56,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:56,336 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:52:56,336 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:52:56,336 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:52:56,336 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-19 18:52:56,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:52:56,336 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:52:56,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:52:56,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:52:56 BoogieIcfgContainer [2020-10-19 18:52:56,344 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:52:56,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:52:56,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:52:56,344 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:52:56,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:51" (3/4) ... [2020-10-19 18:52:56,348 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:52:56,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:52:56,352 INFO L168 Benchmark]: Toolchain (without parser) took 6182.95 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.2 MB). Free memory was 958.6 MB in the beginning and 859.4 MB in the end (delta: 99.2 MB). Peak memory consumption was 320.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:52:56,355 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:52:56,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -170.4 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:52:56,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:52:56,365 INFO L168 Benchmark]: Boogie Preprocessor took 33.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:52:56,366 INFO L168 Benchmark]: RCFGBuilder took 572.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:52:56,366 INFO L168 Benchmark]: BuchiAutomizer took 5068.20 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 859.4 MB in the end (delta: 229.5 MB). Peak memory consumption was 311.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:52:56,367 INFO L168 Benchmark]: Witness Printer took 4.31 ms. Allocated memory is still 1.3 GB. Free memory is still 859.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:52:56,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 448.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -170.4 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 572.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5068.20 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 81.8 MB). Free memory was 1.1 GB in the beginning and 859.4 MB in the end (delta: 229.5 MB). Peak memory consumption was 311.3 MB. Max. memory is 11.5 GB. * Witness Printer took 4.31 ms. Allocated memory is still 1.3 GB. Free memory is still 859.4 MB. There was no memory consumed. Max. memory is 11.5 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 5.0s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. 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: 20ms 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...