./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 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_4-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c532f6b804ad7a925ea1538a844c05d7db150e0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:52:52,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:52:52,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:52:52,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:52:52,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:52:52,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:52:52,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:52:52,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:52:52,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:52:52,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:52:52,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:52:52,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:52:52,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:52:52,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:52:52,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:52:52,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:52:52,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:52:52,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:52:52,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:52:52,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:52:52,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:52:52,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:52:52,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:52:52,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:52:52,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:52:52,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:52:52,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:52:52,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:52:52,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:52:52,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:52:52,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:52:52,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:52:52,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:52:52,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:52:52,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:52:52,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:52:52,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:52:52,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:52:52,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:52:52,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:52:52,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:52:52,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 18:52:52,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:52:52,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:52:52,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:52:52,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:52:52,795 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:52:52,796 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:52:52,796 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:52:52,796 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:52:52,797 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:52:52,797 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:52:52,797 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:52:52,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:52:52,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:52:52,798 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:52:52,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:52:52,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:52:52,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:52:52,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:52:52,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:52:52,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:52:52,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:52:52,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:52:52,800 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:52:52,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:52:52,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:52:52,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:52:52,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:52:52,802 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:52:52,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:52:52,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:52:52,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:52:52,803 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:52:52,804 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:52:52,804 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 -> 9c532f6b804ad7a925ea1538a844c05d7db150e0 [2020-10-19 18:52:53,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:52:53,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:52:53,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:52:53,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:52:53,146 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:52:53,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2020-10-19 18:52:53,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fe3ab7f/ccbc841800334a41b0714d39a534553a/FLAG1385964c4 [2020-10-19 18:52:53,707 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:52:53,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2020-10-19 18:52:53,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fe3ab7f/ccbc841800334a41b0714d39a534553a/FLAG1385964c4 [2020-10-19 18:52:54,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fe3ab7f/ccbc841800334a41b0714d39a534553a [2020-10-19 18:52:54,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:52:54,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:52:54,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:52:54,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:52:54,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:52:54,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e92c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54, skipping insertion in model container [2020-10-19 18:52:54,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:52:54,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:52:54,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:52:54,319 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:52:54,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:52:54,459 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:52:54,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54 WrapperNode [2020-10-19 18:52:54,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:52:54,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:52:54,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:52:54,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:52:54,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:52:54,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:52:54,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:52:54,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:52:54,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (1/1) ... [2020-10-19 18:52:54,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:52:54,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:52:54,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:52:54,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:52:54,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (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 18:52:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:52:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:52:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:52:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:52:55,180 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:52:55,181 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-10-19 18:52:55,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:55 BoogieIcfgContainer [2020-10-19 18:52:55,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:52:55,184 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:52:55,184 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:52:55,187 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:52:55,188 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:55,188 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:52:54" (1/3) ... [2020-10-19 18:52:55,189 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7010558b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:52:55, skipping insertion in model container [2020-10-19 18:52:55,190 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:55,190 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:52:54" (2/3) ... [2020-10-19 18:52:55,190 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7010558b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:52:55, skipping insertion in model container [2020-10-19 18:52:55,190 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:52:55,191 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:55" (3/3) ... [2020-10-19 18:52:55,192 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2020-10-19 18:52:55,238 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:52:55,239 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:52:55,239 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:52:55,239 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:52:55,240 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:52:55,240 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:52:55,240 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:52:55,240 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:52:55,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states. [2020-10-19 18:52:55,281 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-19 18:52:55,282 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:55,282 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:55,287 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:52:55,287 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:55,288 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:52:55,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states. [2020-10-19 18:52:55,295 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-10-19 18:52:55,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:55,295 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:55,295 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-19 18:52:55,296 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:55,302 INFO L794 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 14#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 42#L22true assume !(0 == base2flt_~m % 4294967296); 69#L28true assume !(base2flt_~m % 4294967296 < 16777216); 63#L50-2true [2020-10-19 18:52:55,302 INFO L796 eck$LassoCheckResult]: Loop: 63#L50-2true assume !false; 11#L51true assume base2flt_~m % 4294967296 >= 33554432; 38#L52true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 63#L50-2true [2020-10-19 18:52:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,307 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-10-19 18:52:55,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:55,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617267524] [2020-10-19 18:52:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:55,491 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 18:52:55,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617267524] [2020-10-19 18:52:55,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:52:55,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:52:55,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063571409] [2020-10-19 18:52:55,499 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:52:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:55,500 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-10-19 18:52:55,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:55,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174943971] [2020-10-19 18:52:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:55,514 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:55,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:55,543 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:55,591 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:55,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:55,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:55,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:55,593 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:55,594 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:55,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:55,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2020-10-19 18:52:55,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:55,595 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:55,617 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 18:52:55,632 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 18:52:55,755 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:55,756 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 18:52:55,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:55,763 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 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 18:52:55,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:55,808 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 [2020-10-19 18:52:55,849 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:55,852 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:55,852 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:55,852 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:55,852 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:55,852 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:55,852 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:55,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:55,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2020-10-19 18:52:55,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:55,853 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:55,854 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 18:52:55,862 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 18:52:55,960 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:55,965 INFO L489 LassoAnalysis]: Using template 'affine'. 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 18:52:55,970 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 18:52:55,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:55,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:55,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:55,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:55,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:55,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:55,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:55,980 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:55,992 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:55,992 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:55,997 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:55,998 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:55,999 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:55,999 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,035 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:56,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:56,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:56,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:56,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:56,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:56,107 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 18:52:56,126 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 18:52:56,127 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states. Second operand 3 states. [2020-10-19 18:52:56,205 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states.. Second operand 3 states. Result 237 states and 365 transitions. Complement of second has 6 states. [2020-10-19 18:52:56,206 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 18:52:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2020-10-19 18:52:56,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 237 transitions. Stem has 4 letters. Loop has 3 letters. [2020-10-19 18:52:56,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:56,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 237 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:56,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:56,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 237 transitions. Stem has 4 letters. Loop has 6 letters. [2020-10-19 18:52:56,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:56,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 237 states and 365 transitions. [2020-10-19 18:52:56,229 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-10-19 18:52:56,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 237 states to 57 states and 82 transitions. [2020-10-19 18:52:56,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-10-19 18:52:56,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2020-10-19 18:52:56,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2020-10-19 18:52:56,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:56,238 INFO L691 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-10-19 18:52:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2020-10-19 18:52:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-10-19 18:52:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-19 18:52:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2020-10-19 18:52:56,273 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2020-10-19 18:52:56,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:52:56,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:52:56,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:52:56,278 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand 3 states. [2020-10-19 18:52:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:52:56,325 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-10-19 18:52:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:52:56,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-10-19 18:52:56,327 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:52:56,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2020-10-19 18:52:56,328 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-10-19 18:52:56,329 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-10-19 18:52:56,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2020-10-19 18:52:56,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:56,329 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-19 18:52:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2020-10-19 18:52:56,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-19 18:52:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 18:52:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-10-19 18:52:56,332 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-19 18:52:56,332 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-10-19 18:52:56,332 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:52:56,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-10-19 18:52:56,333 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:52:56,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:56,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:56,334 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:56,334 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:56,334 INFO L794 eck$LassoCheckResult]: Stem: 456#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 454#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 455#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 451#L72 base2flt_#res := base2flt_~__retres4~0; 452#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 453#L22-1 assume !(0 == base2flt_~m % 4294967296); 438#L28-1 assume !(base2flt_~m % 4294967296 < 16777216); 439#L50-5 [2020-10-19 18:52:56,335 INFO L796 eck$LassoCheckResult]: Loop: 439#L50-5 assume !false; 446#L51-1 assume base2flt_~m % 4294967296 >= 33554432; 447#L52-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 439#L50-5 [2020-10-19 18:52:56,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:56,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-10-19 18:52:56,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:56,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988863280] [2020-10-19 18:52:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:56,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:56,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:56,376 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:56,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:56,377 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-10-19 18:52:56,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:56,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784975889] [2020-10-19 18:52:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:56,385 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:56,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:56,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:56,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:56,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2020-10-19 18:52:56,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:56,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521591775] [2020-10-19 18:52:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:56,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:56,448 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:56,454 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:56,482 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:56,482 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:56,482 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:56,482 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:56,482 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:56,482 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,483 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:56,483 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:56,483 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2020-10-19 18:52:56,483 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:56,484 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:56,485 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 18:52:56,494 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 18:52:56,580 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:56,580 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:56,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:56,584 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,620 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:56,621 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:56,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:56,629 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:56,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:56,679 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 18:52:56,714 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:56,717 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:56,717 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:56,717 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:56,718 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:56,718 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:56,718 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,718 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:56,718 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:56,718 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2020-10-19 18:52:56,719 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:56,719 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:56,721 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 18:52:56,735 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 18:52:56,819 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:56,819 INFO L489 LassoAnalysis]: Using template 'affine'. 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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,830 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 18:52:56,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:56,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:56,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:56,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:56,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:56,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:56,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:56,840 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:56,886 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 18:52:56,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:56,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:56,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:56,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:56,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:56,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:56,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,898 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:56,901 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:56,902 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:56,913 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:56,914 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:56,914 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:56,914 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:56,954 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:56,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:56,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:56,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:57,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:57,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:57,002 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 18:52:57,002 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 18:52:57,002 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-10-19 18:52:57,015 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 41 states and 51 transitions. Complement of second has 5 states. [2020-10-19 18:52:57,016 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 18:52:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2020-10-19 18:52:57,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:57,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:52:57,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:52:57,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2020-10-19 18:52:57,019 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-10-19 18:52:57,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2020-10-19 18:52:57,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-10-19 18:52:57,021 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-10-19 18:52:57,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2020-10-19 18:52:57,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:57,021 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-10-19 18:52:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2020-10-19 18:52:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-10-19 18:52:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 18:52:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-19 18:52:57,025 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-19 18:52:57,025 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-19 18:52:57,025 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:52:57,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-10-19 18:52:57,026 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-19 18:52:57,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:57,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:57,027 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:57,027 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:57,027 INFO L794 eck$LassoCheckResult]: Stem: 574#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 572#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 573#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 568#L72 base2flt_#res := base2flt_~__retres4~0; 569#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 571#L22-1 assume !(0 == base2flt_~m % 4294967296); 553#L28-1 assume base2flt_~m % 4294967296 < 16777216; 551#L40-3 [2020-10-19 18:52:57,028 INFO L796 eck$LassoCheckResult]: Loop: 551#L40-3 assume !false; 552#L31-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 555#L40-2 assume base2flt_~m % 4294967296 < 16777216; 551#L40-3 [2020-10-19 18:52:57,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-10-19 18:52:57,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102938498] [2020-10-19 18:52:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,055 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,060 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,061 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-10-19 18:52:57,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054057985] [2020-10-19 18:52:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,067 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,070 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,072 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-10-19 18:52:57,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12022074] [2020-10-19 18:52:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,104 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,109 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,132 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:57,132 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:57,132 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:57,132 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:57,133 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:57,133 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,133 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:57,133 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:57,133 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2020-10-19 18:52:57,133 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:57,134 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:57,135 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 18:52:57,143 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 18:52:57,209 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:57,209 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:57,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:52:57,253 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 18:52:57,254 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 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:57,264 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 18:52:57,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:57,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 18:52:57,349 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:57,351 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:57,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:57,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:57,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:57,352 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:57,352 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,352 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:57,352 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:57,352 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2020-10-19 18:52:57,352 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:57,352 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:57,354 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 18:52:57,361 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 18:52:57,419 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:57,419 INFO L489 LassoAnalysis]: Using template 'affine'. 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 18:52:57,426 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 18:52:57,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:57,428 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:57,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:57,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:57,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:57,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:57,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:57,434 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:57,491 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:57,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:57,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:57,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:57,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:57,496 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:57,496 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:57,500 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:57,504 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:57,504 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:57,516 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:57,516 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:57,517 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:57,517 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,564 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:57,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:57,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:57,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:57,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:57,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:57,663 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 18:52:57,663 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 18:52:57,664 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-10-19 18:52:57,676 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 45 states and 56 transitions. Complement of second has 5 states. [2020-10-19 18:52:57,676 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 18:52:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:52:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-10-19 18:52:57,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-19 18:52:57,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:52:57,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-19 18:52:57,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:57,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2020-10-19 18:52:57,680 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-10-19 18:52:57,681 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2020-10-19 18:52:57,681 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-10-19 18:52:57,681 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-10-19 18:52:57,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2020-10-19 18:52:57,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:57,682 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-19 18:52:57,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2020-10-19 18:52:57,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-10-19 18:52:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 18:52:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-10-19 18:52:57,685 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-10-19 18:52:57,685 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-10-19 18:52:57,685 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:52:57,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-10-19 18:52:57,686 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:52:57,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:57,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:57,687 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:57,687 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:57,688 INFO L794 eck$LassoCheckResult]: Stem: 700#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 698#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 699#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 694#L72 base2flt_#res := base2flt_~__retres4~0; 695#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 697#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 685#L72-1 base2flt_#res := base2flt_~__retres4~0; 686#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 693#L22-2 assume !(0 == base2flt_~m % 4294967296); 671#L28-2 assume !(base2flt_~m % 4294967296 < 16777216); 672#L50-8 [2020-10-19 18:52:57,688 INFO L796 eck$LassoCheckResult]: Loop: 672#L50-8 assume !false; 683#L51-2 assume base2flt_~m % 4294967296 >= 33554432; 684#L52-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 672#L50-8 [2020-10-19 18:52:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2020-10-19 18:52:57,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203458518] [2020-10-19 18:52:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,746 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,746 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-10-19 18:52:57,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931082503] [2020-10-19 18:52:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,752 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,757 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:57,758 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2020-10-19 18:52:57,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:57,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961733067] [2020-10-19 18:52:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:57,828 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:57,846 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:57,894 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:57,894 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:57,894 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:57,894 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:57,895 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:57,895 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:57,895 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:57,895 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:57,895 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2020-10-19 18:52:57,895 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:57,895 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:57,896 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 18:52:57,903 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 18:52:57,979 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:57,979 INFO L404 LassoAnalysis]: Checking for nontermination... 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 18:52:57,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:57,999 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:58,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:58,046 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,078 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:58,080 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:58,080 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:58,080 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:58,080 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:58,080 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:58,080 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,081 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:58,081 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:58,081 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2020-10-19 18:52:58,081 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:58,081 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:58,082 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 18:52:58,088 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 18:52:58,157 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:58,157 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,165 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 18:52:58,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:58,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:58,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:58,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:58,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:58,169 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:58,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:52:58,171 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:58,173 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:58,173 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,181 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:58,182 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:58,182 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:58,182 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 18:52:58,212 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:58,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,249 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 18:52:58,249 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 18:52:58,250 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-10-19 18:52:58,255 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 33 states and 43 transitions. Complement of second has 4 states. [2020-10-19 18:52:58,255 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 18:52:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:52:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2020-10-19 18:52:58,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:52:58,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-19 18:52:58,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-19 18:52:58,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,257 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2020-10-19 18:52:58,258 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:52:58,258 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2020-10-19 18:52:58,258 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-10-19 18:52:58,258 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-10-19 18:52:58,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-10-19 18:52:58,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:52:58,259 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-19 18:52:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-10-19 18:52:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-19 18:52:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 18:52:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-10-19 18:52:58,261 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-19 18:52:58,261 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-10-19 18:52:58,261 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:52:58,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-10-19 18:52:58,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-19 18:52:58,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:52:58,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:52:58,262 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:52:58,263 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-19 18:52:58,263 INFO L794 eck$LassoCheckResult]: Stem: 818#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 816#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 817#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 811#L72 base2flt_#res := base2flt_~__retres4~0; 812#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 815#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 803#L72-1 base2flt_#res := base2flt_~__retres4~0; 804#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 813#L22-2 assume !(0 == base2flt_~m % 4294967296); 792#L28-2 assume base2flt_~m % 4294967296 < 16777216; 793#L40-5 [2020-10-19 18:52:58,263 INFO L796 eck$LassoCheckResult]: Loop: 793#L40-5 assume !false; 809#L31-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 810#L40-4 assume base2flt_~m % 4294967296 < 16777216; 793#L40-5 [2020-10-19 18:52:58,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2020-10-19 18:52:58,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:58,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302580153] [2020-10-19 18:52:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,290 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:58,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,291 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-10-19 18:52:58,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:58,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605357285] [2020-10-19 18:52:58,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,297 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:58,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,298 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2020-10-19 18:52:58,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:52:58,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220921742] [2020-10-19 18:52:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:52:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:52:58,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:52:58,326 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:52:58,344 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:58,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:58,345 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:58,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:58,345 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 18:52:58,345 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:58,345 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:58,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2020-10-19 18:52:58,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:58,345 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:58,346 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 18:52:58,352 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 18:52:58,407 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:58,407 INFO L404 LassoAnalysis]: Checking for nontermination... 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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 18:52:58,421 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 18:52:58,465 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 18:52:58,465 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,501 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 18:52:58,503 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:52:58,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:52:58,504 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:52:58,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:52:58,504 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:52:58,504 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,504 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:52:58,504 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:52:58,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2020-10-19 18:52:58,505 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:52:58,505 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:52:58,506 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 18:52:58,512 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 18:52:58,567 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:52:58,567 INFO L489 LassoAnalysis]: Using template 'affine'. 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 18:52:58,570 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 18:52:58,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:52:58,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:52:58,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:52:58,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:52:58,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:52:58,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:52:58,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,577 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:52:58,579 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:52:58,580 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:52:58,583 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:52:58,583 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:52:58,583 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:52:58,583 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:52:58,605 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 18:52:58,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:52:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:52:58,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:52:58,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:52:58,663 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 18:52:58,664 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 18:52:58,664 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-10-19 18:52:58,669 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 31 states and 39 transitions. Complement of second has 4 states. [2020-10-19 18:52:58,670 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 18:52:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:52:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-10-19 18:52:58,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-19 18:52:58,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2020-10-19 18:52:58,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2020-10-19 18:52:58,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:52:58,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-19 18:52:58,673 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:52:58,673 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-19 18:52:58,673 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:52:58,673 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:52:58,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:52:58,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:52:58,673 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:52:58,673 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:52:58,673 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:52:58,674 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:52:58,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:52:58,674 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:52:58,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:52:58,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:52:58 BoogieIcfgContainer [2020-10-19 18:52:58,681 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:52:58,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:52:58,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:52:58,682 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:52:58,682 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:52:55" (3/4) ... [2020-10-19 18:52:58,686 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:52:58,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:52:58,689 INFO L168 Benchmark]: Toolchain (without parser) took 4638.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.2 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -102.4 MB). Peak memory consumption was 116.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:52:58,689 INFO L168 Benchmark]: CDTParser took 0.27 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 18:52:58,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:52:58,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.73 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 18:52:58,691 INFO L168 Benchmark]: Boogie Preprocessor took 36.67 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:52:58,692 INFO L168 Benchmark]: RCFGBuilder took 636.56 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: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:52:58,693 INFO L168 Benchmark]: BuchiAutomizer took 3497.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 106.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:52:58,694 INFO L168 Benchmark]: Witness Printer took 4.54 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 18:52:58,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 404.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 960.0 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.73 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 36.67 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 636.56 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: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3497.62 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 106.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.54 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 30 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 257 SDtfs, 224 SDslu, 27 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 32ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...