./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer --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 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:22:13,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:22:13,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:22:13,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:22:13,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:22:13,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:22:13,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:22:13,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:22:13,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:22:13,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:22:13,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:22:13,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:22:13,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:22:13,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:22:13,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:22:13,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:22:13,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:22:13,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:22:13,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:22:13,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:22:13,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:22:13,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:22:13,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:22:13,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:22:13,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:22:13,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:22:13,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:22:13,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:22:13,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:22:13,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:22:13,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:22:13,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:22:13,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:22:13,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:22:13,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:22:13,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:22:13,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:22:13,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:22:13,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:22:13,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:22:13,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:22:13,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:22:13,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:22:13,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:22:13,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:22:13,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:22:13,301 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:22:13,302 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:22:13,302 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:22:13,302 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:22:13,303 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:22:13,303 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:22:13,304 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:22:13,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:22:13,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:22:13,305 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:22:13,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:22:13,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:22:13,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:22:13,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:22:13,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:22:13,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:22:13,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:22:13,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:22:13,307 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:22:13,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:22:13,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:22:13,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:22:13,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:22:13,309 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:22:13,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:22:13,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:22:13,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:22:13,311 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:22:13,312 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:22:13,312 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-11-30 00:22:13,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:22:13,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:22:13,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:22:13,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:22:13,622 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:22:13,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-30 00:22:13,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/data/bef7225e1/faa4d272b5344342ad89f6b2d6f2a386/FLAGa1bb9cc01 [2020-11-30 00:22:14,254 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:22:14,255 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-11-30 00:22:14,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/data/bef7225e1/faa4d272b5344342ad89f6b2d6f2a386/FLAGa1bb9cc01 [2020-11-30 00:22:14,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/data/bef7225e1/faa4d272b5344342ad89f6b2d6f2a386 [2020-11-30 00:22:14,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:22:14,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:22:14,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:22:14,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:22:14,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:22:14,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:14,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc92499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14, skipping insertion in model container [2020-11-30 00:22:14,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:14,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:22:14,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:22:14,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:22:14,871 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:22:14,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:22:14,932 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:22:14,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14 WrapperNode [2020-11-30 00:22:14,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:22:14,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:22:14,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:22:14,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:22:14,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:14,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:14,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:22:14,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:22:14,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:22:14,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:22:14,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:14,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:14,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:14,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:15,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:15,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:15,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... [2020-11-30 00:22:15,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:22:15,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:22:15,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:22:15,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:22:15,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/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 [2020-11-30 00:22:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:22:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:22:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:22:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:22:16,029 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:22:16,030 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-11-30 00:22:16,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:22:16 BoogieIcfgContainer [2020-11-30 00:22:16,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:22:16,033 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:22:16,033 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:22:16,037 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:22:16,038 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:22:16,038 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:22:14" (1/3) ... [2020-11-30 00:22:16,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d4db613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:22:16, skipping insertion in model container [2020-11-30 00:22:16,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:22:16,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:22:14" (2/3) ... [2020-11-30 00:22:16,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d4db613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:22:16, skipping insertion in model container [2020-11-30 00:22:16,041 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:22:16,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:22:16" (3/3) ... [2020-11-30 00:22:16,042 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-11-30 00:22:16,099 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:22:16,099 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:22:16,099 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:22:16,099 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:22:16,100 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:22:16,100 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:22:16,100 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:22:16,100 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:22:16,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states. [2020-11-30 00:22:16,149 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-30 00:22:16,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:22:16,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:22:16,158 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:22:16,158 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:22:16,158 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:22:16,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states. [2020-11-30 00:22:16,166 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-30 00:22:16,167 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:22:16,167 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:22:16,167 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:22:16,168 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:22:16,175 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); 9#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; 12#L21true assume !(0 == base2flt_~m % 4294967296); 50#L27true assume !(base2flt_~m % 4294967296 < 16777216); 44#L49-2true [2020-11-30 00:22:16,176 INFO L796 eck$LassoCheckResult]: Loop: 44#L49-2true assume !false; 76#L50true assume base2flt_~m % 4294967296 >= 33554432; 8#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 44#L49-2true [2020-11-30 00:22:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:16,183 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-11-30 00:22:16,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:16,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881305898] [2020-11-30 00:22:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:22:16,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881305898] [2020-11-30 00:22:16,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:22:16,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:22:16,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190101196] [2020-11-30 00:22:16,405 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:22:16,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:16,407 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-11-30 00:22:16,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:16,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949910855] [2020-11-30 00:22:16,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:16,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:16,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:16,452 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:16,545 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:16,546 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:16,546 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:16,546 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:16,546 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:22:16,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:16,547 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:16,547 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:16,547 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration1_Loop [2020-11-30 00:22:16,548 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:16,548 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:16,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:16,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:16,751 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:16,751 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:16,759 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:22:16,759 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 /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:16,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:22:16,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:22:16,833 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:22:16,836 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:16,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:16,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:16,837 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:16,837 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:22:16,837 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:16,837 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:16,837 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:16,850 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration1_Loop [2020-11-30 00:22:16,851 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:16,851 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:16,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:16,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:17,142 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-11-30 00:22:17,196 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:17,202 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:17,211 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:22:17,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:22:17,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:22:17,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:22:17,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:22:17,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:22:17,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:22:17,220 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 [2020-11-30 00:22:17,224 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:22:17,233 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:22:17,233 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:17,262 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:22:17,263 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:22:17,263 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:22:17,264 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-11-30 00:22:17,297 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:22:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:17,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:22:17,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:17,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:22:17,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:22:17,421 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 [2020-11-30 00:22:17,423 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states. Second operand 3 states. [2020-11-30 00:22:17,550 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states.. Second operand 3 states. Result 247 states and 375 transitions. Complement of second has 6 states. [2020-11-30 00:22:17,556 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 [2020-11-30 00:22:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:22:17,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2020-11-30 00:22:17,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 243 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 00:22:17,563 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:17,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 243 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:22:17,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:17,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 243 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-30 00:22:17,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:17,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 247 states and 375 transitions. [2020-11-30 00:22:17,582 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-11-30 00:22:17,588 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 247 states to 57 states and 82 transitions. [2020-11-30 00:22:17,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-11-30 00:22:17,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2020-11-30 00:22:17,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2020-11-30 00:22:17,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:22:17,591 INFO L691 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-11-30 00:22:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2020-11-30 00:22:17,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-11-30 00:22:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-30 00:22:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2020-11-30 00:22:17,619 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2020-11-30 00:22:17,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:22:17,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:22:17,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:22:17,623 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand 3 states. [2020-11-30 00:22:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:22:17,708 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-11-30 00:22:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:22:17,710 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-11-30 00:22:17,711 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-30 00:22:17,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2020-11-30 00:22:17,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-30 00:22:17,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-30 00:22:17,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2020-11-30 00:22:17,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:22:17,714 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-30 00:22:17,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2020-11-30 00:22:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 00:22:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:22:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-11-30 00:22:17,717 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-30 00:22:17,717 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-30 00:22:17,717 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:22:17,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-11-30 00:22:17,718 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-30 00:22:17,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:22:17,718 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:22:17,718 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:22:17,719 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:22:17,719 INFO L794 eck$LassoCheckResult]: Stem: 469#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); 467#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; 468#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 461#L71 base2flt_#res := base2flt_~__retres4~0; 462#L72 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; 465#L21-1 assume !(0 == base2flt_~m % 4294967296); 447#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 448#L49-5 [2020-11-30 00:22:17,719 INFO L796 eck$LassoCheckResult]: Loop: 448#L49-5 assume !false; 456#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 457#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 448#L49-5 [2020-11-30 00:22:17,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:17,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-11-30 00:22:17,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:17,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747936130] [2020-11-30 00:22:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:17,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:17,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:17,826 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:17,831 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-11-30 00:22:17,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:17,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972100325] [2020-11-30 00:22:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:17,852 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:17,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:17,885 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:17,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:17,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2020-11-30 00:22:17,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:17,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975972497] [2020-11-30 00:22:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:17,926 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:17,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:17,950 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:18,013 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:18,014 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:18,014 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:18,014 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:18,014 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:22:18,014 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:18,014 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:18,014 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:18,015 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration2_Loop [2020-11-30 00:22:18,015 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:18,015 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:18,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:18,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:18,170 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:18,170 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:18,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:22:18,178 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 [2020-11-30 00:22:18,224 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:22:18,224 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 /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:18,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:22:18,233 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 /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:18,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:22:18,292 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 [2020-11-30 00:22:18,341 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:22:18,344 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:18,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:18,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:18,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:18,344 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:22:18,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:18,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:18,345 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:18,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration2_Loop [2020-11-30 00:22:18,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:18,345 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:18,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:18,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:18,538 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:18,538 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:18,548 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 [2020-11-30 00:22:18,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:22:18,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:22:18,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:22:18,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:22:18,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:22:18,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:22:18,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:18,560 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:18,606 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:18,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:22:18,608 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:22:18,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:22:18,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:22:18,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:22:18,610 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:22:18,610 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:22:18,613 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:22:18,620 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:22:18,620 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:18,627 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:22:18,627 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:22:18,627 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:22:18,627 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-11-30 00:22:18,653 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:22:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:18,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:22:18,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:18,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:22:18,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:22:18,782 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 [2020-11-30 00:22:18,783 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-11-30 00:22:18,814 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. [2020-11-30 00:22:18,815 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 [2020-11-30 00:22:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:22:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2020-11-30 00:22:18,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:22:18,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:18,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:22:18,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:18,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-30 00:22:18,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:18,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2020-11-30 00:22:18,818 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-30 00:22:18,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2020-11-30 00:22:18,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-11-30 00:22:18,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-30 00:22:18,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2020-11-30 00:22:18,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:22:18,820 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-11-30 00:22:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2020-11-30 00:22:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-30 00:22:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:22:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-30 00:22:18,823 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:22:18,823 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:22:18,823 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:22:18,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-30 00:22:18,828 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-30 00:22:18,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:22:18,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:22:18,829 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:22:18,829 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:22:18,829 INFO L794 eck$LassoCheckResult]: Stem: 587#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); 585#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; 586#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 578#L71 base2flt_#res := base2flt_~__retres4~0; 579#L72 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; 583#L21-1 assume !(0 == base2flt_~m % 4294967296); 562#L27-1 assume base2flt_~m % 4294967296 < 16777216; 564#L39-3 [2020-11-30 00:22:18,830 INFO L796 eck$LassoCheckResult]: Loop: 564#L39-3 assume !false; 582#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 565#L39-2 assume base2flt_~m % 4294967296 < 16777216; 564#L39-3 [2020-11-30 00:22:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:18,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-11-30 00:22:18,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:18,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026976519] [2020-11-30 00:22:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:18,855 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:18,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:18,881 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:18,882 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-11-30 00:22:18,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:18,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20917524] [2020-11-30 00:22:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:18,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:18,909 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:18,911 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:18,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-11-30 00:22:18,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:18,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794413705] [2020-11-30 00:22:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:18,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:18,981 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:18,987 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:19,033 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:19,033 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:19,033 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:19,033 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:19,034 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:22:19,034 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:19,034 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:19,034 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:19,034 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration3_Loop [2020-11-30 00:22:19,034 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:19,034 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:19,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:19,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:19,145 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:19,145 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:19,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:22:19,150 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:19,199 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:22:19,199 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 /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:19,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:22:19,210 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:19,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:22:19,267 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:19,317 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:22:19,319 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:19,319 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:19,319 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:19,319 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:19,320 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:22:19,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:19,320 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:19,320 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:19,320 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration3_Loop [2020-11-30 00:22:19,320 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:19,320 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:19,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:19,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:19,444 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:19,444 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:19,452 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 [2020-11-30 00:22:19,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:22:19,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:22:19,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:22:19,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:22:19,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:22:19,456 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:22:19,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:19,465 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:19,513 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 [2020-11-30 00:22:19,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:22:19,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:22:19,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:22:19,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:22:19,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:22:19,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:22:19,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:19,521 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:22:19,525 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:22:19,526 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:19,535 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:22:19,536 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:22:19,536 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:22:19,536 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 [2020-11-30 00:22:19,574 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:22:19,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:19,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:22:19,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:19,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:22:19,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:22:19,795 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 [2020-11-30 00:22:19,795 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-30 00:22:19,816 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. [2020-11-30 00:22:19,819 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 [2020-11-30 00:22:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:22:19,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-11-30 00:22:19,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:22:19,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:19,821 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:22:19,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:19,821 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-30 00:22:19,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:19,822 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2020-11-30 00:22:19,823 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-30 00:22:19,824 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2020-11-30 00:22:19,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-11-30 00:22:19,824 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-30 00:22:19,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2020-11-30 00:22:19,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:22:19,825 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-11-30 00:22:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2020-11-30 00:22:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-11-30 00:22:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:22:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-11-30 00:22:19,831 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-30 00:22:19,831 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-30 00:22:19,831 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:22:19,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-11-30 00:22:19,833 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 00:22:19,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:22:19,833 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:22:19,834 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:22:19,834 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:22:19,835 INFO L794 eck$LassoCheckResult]: Stem: 713#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); 711#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; 712#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 704#L71 base2flt_#res := base2flt_~__retres4~0; 705#L72 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; 709#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 694#L71-1 base2flt_#res := base2flt_~__retres4~0; 695#L72-1 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; 703#L21-2 assume !(0 == base2flt_~m % 4294967296); 710#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 700#L49-8 [2020-11-30 00:22:19,835 INFO L796 eck$LassoCheckResult]: Loop: 700#L49-8 assume !false; 692#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 693#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 700#L49-8 [2020-11-30 00:22:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2020-11-30 00:22:19,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:19,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183218934] [2020-11-30 00:22:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:19,864 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:19,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:19,901 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:19,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-11-30 00:22:19,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:19,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094710161] [2020-11-30 00:22:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:19,915 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:19,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:19,939 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:19,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:19,940 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2020-11-30 00:22:19,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:19,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429115546] [2020-11-30 00:22:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:19,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:19,987 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:19,998 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:20,031 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:20,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:20,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:20,031 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:20,031 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:22:20,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:20,031 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:20,031 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:20,032 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration4_Loop [2020-11-30 00:22:20,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:20,032 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:20,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:20,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:20,164 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:20,164 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:20,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:22:20,174 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 /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:20,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:22:20,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:22:20,273 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:22:20,275 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:20,275 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:20,275 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:20,275 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:20,276 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:22:20,276 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:20,276 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:20,276 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:20,276 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration4_Loop [2020-11-30 00:22:20,276 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:20,276 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:20,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:20,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:20,419 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:20,419 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/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 [2020-11-30 00:22:20,444 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 [2020-11-30 00:22:20,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:22:20,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:22:20,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:22:20,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:22:20,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:22:20,450 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:22:20,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:22:20,453 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:22:20,457 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:22:20,458 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:20,463 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:22:20,463 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:22:20,463 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:22:20,463 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:20,507 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:22:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:20,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:22:20,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:20,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:22:20,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:22:20,625 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 [2020-11-30 00:22:20,625 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-30 00:22:20,635 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. [2020-11-30 00:22:20,636 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 [2020-11-30 00:22:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:22:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2020-11-30 00:22:20,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:22:20,637 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:20,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-30 00:22:20,637 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:20,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-30 00:22:20,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:20,638 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2020-11-30 00:22:20,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:22:20,640 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2020-11-30 00:22:20,640 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-11-30 00:22:20,640 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-11-30 00:22:20,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-11-30 00:22:20,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:22:20,641 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:22:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-11-30 00:22:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 00:22:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:22:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-30 00:22:20,644 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:22:20,644 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:22:20,644 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:22:20,644 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-30 00:22:20,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:22:20,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:22:20,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:22:20,645 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:22:20,645 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:22:20,646 INFO L794 eck$LassoCheckResult]: Stem: 831#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); 829#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; 830#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 821#L71 base2flt_#res := base2flt_~__retres4~0; 822#L72 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; 827#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 813#L71-1 base2flt_#res := base2flt_~__retres4~0; 814#L72-1 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; 823#L21-2 assume !(0 == base2flt_~m % 4294967296); 828#L27-2 assume base2flt_~m % 4294967296 < 16777216; 832#L39-5 [2020-11-30 00:22:20,646 INFO L796 eck$LassoCheckResult]: Loop: 832#L39-5 assume !false; 819#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 820#L39-4 assume base2flt_~m % 4294967296 < 16777216; 832#L39-5 [2020-11-30 00:22:20,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:20,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2020-11-30 00:22:20,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:20,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420811016] [2020-11-30 00:22:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:20,660 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:20,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:20,677 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:20,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:20,678 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-11-30 00:22:20,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:20,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783514406] [2020-11-30 00:22:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:20,685 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:20,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:20,690 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:20,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:20,691 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2020-11-30 00:22:20,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:22:20,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641558179] [2020-11-30 00:22:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:22:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:20,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:22:20,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:22:20,740 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:22:20,773 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:20,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:20,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:20,773 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:20,773 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:22:20,773 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:20,773 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:20,773 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:20,773 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration5_Loop [2020-11-30 00:22:20,773 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:20,774 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:20,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:20,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:20,885 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:20,885 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:20,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:22:20,889 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:20,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:22:20,936 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 [2020-11-30 00:22:20,978 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:22:20,980 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:22:20,980 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:22:20,980 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:22:20,980 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:22:20,980 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:22:20,980 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:22:20,980 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:22:20,980 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:22:20,980 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_4-3a.c.cil.c_Iteration5_Loop [2020-11-30 00:22:20,981 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:22:20,981 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:22:20,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:20,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:22:21,077 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:22:21,077 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:21,083 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 [2020-11-30 00:22:21,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:22:21,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:22:21,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:22:21,085 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:22:21,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:22:21,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:22:21,086 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 [2020-11-30 00:22:21,089 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:22:21,093 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:22:21,093 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc138917-3f34-40de-bd28-485c7fbfde12/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:22:21,096 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:22:21,096 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:22:21,096 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:22:21,097 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 [2020-11-30 00:22:21,134 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:22:21,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:22:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:21,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:22:21,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:22:21,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:22:21,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:22:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:22:21,222 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 [2020-11-30 00:22:21,222 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-11-30 00:22:21,233 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. [2020-11-30 00:22:21,234 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 [2020-11-30 00:22:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:22:21,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-11-30 00:22:21,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:22:21,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:21,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-30 00:22:21,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:21,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-30 00:22:21,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:22:21,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-11-30 00:22:21,237 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:22:21,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-30 00:22:21,237 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:22:21,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:22:21,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:22:21,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:22:21,237 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:22:21,237 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:22:21,238 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:22:21,238 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 00:22:21,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:22:21,238 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:22:21,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:22:21,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:22:21 BoogieIcfgContainer [2020-11-30 00:22:21,247 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:22:21,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:22:21,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:22:21,248 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:22:21,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:22:16" (3/4) ... [2020-11-30 00:22:21,252 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:22:21,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:22:21,254 INFO L168 Benchmark]: Toolchain (without parser) took 6684.30 ms. Allocated memory was 83.9 MB in the beginning and 136.3 MB in the end (delta: 52.4 MB). Free memory was 54.4 MB in the beginning and 55.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 49.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:22:21,256 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 43.0 MB in the beginning and 42.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:22:21,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.40 ms. Allocated memory is still 83.9 MB. Free memory was 54.2 MB in the beginning and 59.8 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:22:21,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.09 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 57.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:22:21,263 INFO L168 Benchmark]: Boogie Preprocessor took 40.13 ms. Allocated memory is still 83.9 MB. Free memory was 57.3 MB in the beginning and 55.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:22:21,264 INFO L168 Benchmark]: RCFGBuilder took 1007.64 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 55.6 MB in the beginning and 89.5 MB in the end (delta: -33.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:22:21,265 INFO L168 Benchmark]: BuchiAutomizer took 5214.41 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 89.5 MB in the beginning and 55.8 MB in the end (delta: 33.7 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:22:21,265 INFO L168 Benchmark]: Witness Printer took 4.38 ms. Allocated memory is still 136.3 MB. Free memory is still 55.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:22:21,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 43.0 MB in the beginning and 42.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.40 ms. Allocated memory is still 83.9 MB. Free memory was 54.2 MB in the beginning and 59.8 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.09 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 57.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.13 ms. Allocated memory is still 83.9 MB. Free memory was 57.3 MB in the beginning and 55.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1007.64 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 55.6 MB in the beginning and 89.5 MB in the end (delta: -33.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5214.41 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 89.5 MB in the beginning and 55.8 MB in the end (delta: 33.7 MB). Peak memory consumption was 57.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.38 ms. Allocated memory is still 136.3 MB. Free memory is still 55.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 5.1s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. 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: 259 SDtfs, 226 SDslu, 27 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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: 60ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...