./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.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_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:36:00,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:36:00,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:36:00,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:36:00,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:36:00,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:36:00,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:36:00,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:36:00,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:36:00,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:36:00,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:36:00,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:36:00,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:36:00,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:36:00,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:36:00,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:36:00,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:36:00,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:36:00,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:36:00,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:36:00,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:36:00,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:36:00,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:36:00,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:36:00,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:36:00,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:36:00,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:36:00,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:36:00,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:36:00,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:36:00,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:36:00,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:36:00,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:36:00,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:36:00,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:36:00,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:36:00,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:36:00,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:36:00,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:36:00,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:36:00,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:36:00,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:36:00,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:36:00,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:36:00,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:36:00,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:36:00,993 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:36:00,993 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:36:00,993 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:36:00,993 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:36:00,994 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:36:00,994 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:36:00,994 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:36:00,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:36:00,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:36:00,995 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:36:00,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:36:00,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:36:00,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:36:00,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:36:00,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:36:00,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:36:00,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:36:00,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:36:00,997 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:36:00,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:36:00,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:36:00,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:36:00,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:36:00,998 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:36:00,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:36:00,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:36:00,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:36:00,999 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:36:01,000 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:36:01,000 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_238a01e4-7af7-4def-8610-bf29e14dafef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-11-30 00:36:01,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:36:01,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:36:01,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:36:01,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:36:01,341 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:36:01,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 00:36:01,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/data/3d56aef96/e7ff93beb79a46a6ae97c4f7fe0d908d/FLAG35ce8bb11 [2020-11-30 00:36:01,967 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:36:01,968 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 00:36:01,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/data/3d56aef96/e7ff93beb79a46a6ae97c4f7fe0d908d/FLAG35ce8bb11 [2020-11-30 00:36:02,284 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/bin/uautomizer/data/3d56aef96/e7ff93beb79a46a6ae97c4f7fe0d908d [2020-11-30 00:36:02,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:36:02,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:36:02,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:36:02,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:36:02,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:36:02,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4aa1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02, skipping insertion in model container [2020-11-30 00:36:02,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:36:02,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:36:02,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:36:02,582 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:36:02,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:36:02,654 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:36:02,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02 WrapperNode [2020-11-30 00:36:02,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:36:02,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:36:02,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:36:02,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:36:02,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:36:02,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:36:02,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:36:02,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:36:02,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... [2020-11-30 00:36:02,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:36:02,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:36:02,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:36:02,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:36:02,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:36:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:36:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:36:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:36:03,580 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:36:03,581 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-30 00:36:03,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:36:03 BoogieIcfgContainer [2020-11-30 00:36:03,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:36:03,584 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:36:03,585 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:36:03,588 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:36:03,589 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:36:03,590 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:36:02" (1/3) ... [2020-11-30 00:36:03,591 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a560fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:36:03, skipping insertion in model container [2020-11-30 00:36:03,592 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:36:03,592 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:36:02" (2/3) ... [2020-11-30 00:36:03,592 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a560fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:36:03, skipping insertion in model container [2020-11-30 00:36:03,593 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:36:03,593 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:36:03" (3/3) ... [2020-11-30 00:36:03,594 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-11-30 00:36:03,643 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:36:03,643 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:36:03,643 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:36:03,644 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:36:03,644 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:36:03,644 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:36:03,644 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:36:03,644 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:36:03,660 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states. [2020-11-30 00:36:03,687 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-30 00:36:03,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:36:03,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:36:03,694 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:36:03,694 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:36:03,694 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:36:03,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states. [2020-11-30 00:36:03,702 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-30 00:36:03,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:36:03,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:36:03,702 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:36:03,703 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:36:03,710 INFO L794 eck$LassoCheckResult]: Stem: 46#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); 11#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 14#L21true assume !(0 == base2flt_~m % 4294967296); 59#L27true assume !(base2flt_~m % 4294967296 < 16777216); 52#L49-2true [2020-11-30 00:36:03,710 INFO L796 eck$LassoCheckResult]: Loop: 52#L49-2true assume !false; 85#L50true assume base2flt_~m % 4294967296 >= 33554432; 10#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 52#L49-2true [2020-11-30 00:36:03,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-11-30 00:36:03,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:03,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100287609] [2020-11-30 00:36:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:36:03,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100287609] [2020-11-30 00:36:03,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:36:03,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:36:03,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954245540] [2020-11-30 00:36:03,913 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:36:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-11-30 00:36:03,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:03,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119844682] [2020-11-30 00:36:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:03,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:03,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:03,983 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:04,034 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:04,035 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:04,035 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:04,035 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:04,036 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:36:04,036 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:04,036 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:04,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:04,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration1_Loop [2020-11-30 00:36:04,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:04,037 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:04,057 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 00:36:04,072 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 00:36:04,217 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:04,218 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:04,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:36:04,231 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_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:04,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:36:04,291 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:36:04,335 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:36:04,343 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:04,343 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:04,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:04,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:04,344 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:36:04,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:04,344 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:04,344 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:04,344 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration1_Loop [2020-11-30 00:36:04,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:04,345 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:04,346 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 00:36:04,357 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 00:36:04,465 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:04,470 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:04,479 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 00:36:04,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:36:04,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:36:04,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:36:04,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:36:04,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:36:04,485 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:36:04,486 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 00:36:04,490 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:36:04,502 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:36:04,502 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_238a01e4-7af7-4def-8610-bf29e14dafef/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) [2020-11-30 00:36:04,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:36:04,547 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:36:04,548 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:36:04,548 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:04,587 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:36:04,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:04,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:36:04,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:04,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:36:04,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:04,675 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 00:36:04,696 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 00:36:04,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states. Second operand 3 states. [2020-11-30 00:36:04,785 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states.. Second operand 3 states. Result 277 states and 435 transitions. Complement of second has 6 states. [2020-11-30 00:36:04,786 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 00:36:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:36:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 284 transitions. [2020-11-30 00:36:04,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 284 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 00:36:04,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:04,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 284 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:36:04,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:04,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 284 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-30 00:36:04,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:04,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 277 states and 435 transitions. [2020-11-30 00:36:04,812 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-11-30 00:36:04,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 277 states to 57 states and 82 transitions. [2020-11-30 00:36:04,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-11-30 00:36:04,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2020-11-30 00:36:04,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2020-11-30 00:36:04,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:36:04,822 INFO L691 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-11-30 00:36:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2020-11-30 00:36:04,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-11-30 00:36:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-30 00:36:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2020-11-30 00:36:04,862 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2020-11-30 00:36:04,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:36:04,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:36:04,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:36:04,870 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand 3 states. [2020-11-30 00:36:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:36:04,961 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-11-30 00:36:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:36:04,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-11-30 00:36:04,963 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-30 00:36:04,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2020-11-30 00:36:04,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-30 00:36:04,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-30 00:36:04,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2020-11-30 00:36:04,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:36:04,965 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-30 00:36:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2020-11-30 00:36:04,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 00:36:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:36:04,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-11-30 00:36:04,968 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-30 00:36:04,968 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-30 00:36:04,968 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:36:04,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-11-30 00:36:04,969 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-30 00:36:04,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:36:04,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:36:04,969 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:04,970 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:36:04,970 INFO L794 eck$LassoCheckResult]: Stem: 509#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); 507#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 508#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 501#L71 base2flt_#res := base2flt_~__retres4~0; 502#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; 505#L21-1 assume !(0 == base2flt_~m % 4294967296); 487#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 488#L49-5 [2020-11-30 00:36:04,973 INFO L796 eck$LassoCheckResult]: Loop: 488#L49-5 assume !false; 497#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 498#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 488#L49-5 [2020-11-30 00:36:04,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:04,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-11-30 00:36:04,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:04,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066969756] [2020-11-30 00:36:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,069 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:05,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:05,083 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-11-30 00:36:05,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:05,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041752272] [2020-11-30 00:36:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,102 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:05,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:05,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2020-11-30 00:36:05,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:05,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171284093] [2020-11-30 00:36:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,152 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,167 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:05,200 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:05,200 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:05,200 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:05,200 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:05,201 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:36:05,201 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:05,201 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:05,201 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:05,201 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration2_Loop [2020-11-30 00:36:05,201 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:05,201 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:05,203 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 00:36:05,214 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 00:36:05,314 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:05,315 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:05,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:36:05,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:36:05,353 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:36:05,354 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_238a01e4-7af7-4def-8610-bf29e14dafef/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:05,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:36:05,367 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:05,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:36:05,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:36:05,479 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:36:05,481 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:05,481 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:05,482 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:05,482 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:05,482 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:36:05,482 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:05,482 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:05,482 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:05,482 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration2_Loop [2020-11-30 00:36:05,482 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:05,482 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:05,484 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 00:36:05,500 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 00:36:05,661 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:05,662 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:05,669 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 00:36:05,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:36:05,671 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:36:05,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:36:05,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:36:05,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:36:05,675 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:36:05,675 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 00:36:05,679 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:05,724 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 00:36:05,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:36:05,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:36:05,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:36:05,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:36:05,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:36:05,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:36:05,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:05,740 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:36:05,747 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:36:05,747 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_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:05,754 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:36:05,755 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:36:05,756 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:36:05,756 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 00:36:05,792 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:36:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:05,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:36:05,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:05,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:36:05,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:05,859 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 00:36:05,859 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 00:36:05,860 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-11-30 00:36:05,883 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 00:36:05,884 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 00:36:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:36:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2020-11-30 00:36:05,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:36:05,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:05,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:36:05,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:05,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-30 00:36:05,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:05,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2020-11-30 00:36:05,887 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-30 00:36:05,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2020-11-30 00:36:05,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-11-30 00:36:05,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-30 00:36:05,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2020-11-30 00:36:05,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:36:05,889 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-11-30 00:36:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2020-11-30 00:36:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-30 00:36:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:36:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-30 00:36:05,892 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:36:05,892 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:36:05,892 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:36:05,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-30 00:36:05,893 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-30 00:36:05,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:36:05,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:36:05,894 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:05,894 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:36:05,894 INFO L794 eck$LassoCheckResult]: Stem: 627#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); 625#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 626#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 619#L71 base2flt_#res := base2flt_~__retres4~0; 620#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; 623#L21-1 assume !(0 == base2flt_~m % 4294967296); 602#L27-1 assume base2flt_~m % 4294967296 < 16777216; 604#L39-3 [2020-11-30 00:36:05,898 INFO L796 eck$LassoCheckResult]: Loop: 604#L39-3 assume !false; 622#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 605#L39-2 assume base2flt_~m % 4294967296 < 16777216; 604#L39-3 [2020-11-30 00:36:05,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:05,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-11-30 00:36:05,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:05,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219652320] [2020-11-30 00:36:05,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,950 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:05,956 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-11-30 00:36:05,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:05,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218426550] [2020-11-30 00:36:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:05,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:05,966 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-11-30 00:36:05,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:05,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847579635] [2020-11-30 00:36:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:06,010 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:06,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:06,059 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:06,093 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:06,093 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:06,093 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:06,093 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:06,093 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:36:06,093 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:06,094 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:06,094 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:06,094 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration3_Loop [2020-11-30 00:36:06,094 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:06,094 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:06,095 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 00:36:06,108 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 00:36:06,193 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:06,193 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:06,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:36:06,202 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 00:36:06,243 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:36:06,243 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_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:06,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:36:06,256 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_238a01e4-7af7-4def-8610-bf29e14dafef/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:06,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:36:06,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:36:06,337 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:36:06,338 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:06,339 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:06,339 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:06,339 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:06,339 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:36:06,339 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:06,339 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:06,339 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:06,339 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration3_Loop [2020-11-30 00:36:06,339 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:06,339 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:06,340 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 00:36:06,355 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 00:36:06,518 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:06,518 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:06,524 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 00:36:06,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:36:06,528 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:36:06,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:36:06,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:36:06,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:36:06,534 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:36:06,534 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:36:06,538 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:06,584 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 00:36:06,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:36:06,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:36:06,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:36:06,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:36:06,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:36:06,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:36:06,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:36:06,592 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:36:06,595 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:36:06,595 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_238a01e4-7af7-4def-8610-bf29e14dafef/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:06,604 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:36:06,604 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:36:06,604 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:36:06,605 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-11-30 00:36:06,640 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:36:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:06,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:36:06,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:06,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:36:06,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:06,771 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 00:36:06,772 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 00:36:06,772 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-30 00:36:06,794 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 00:36:06,794 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 00:36:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:36:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-11-30 00:36:06,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:36:06,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:06,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:36:06,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:06,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-30 00:36:06,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:06,797 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2020-11-30 00:36:06,798 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-30 00:36:06,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2020-11-30 00:36:06,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-11-30 00:36:06,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-30 00:36:06,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2020-11-30 00:36:06,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:36:06,800 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-11-30 00:36:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2020-11-30 00:36:06,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-11-30 00:36:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:36:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-11-30 00:36:06,804 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-30 00:36:06,804 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-30 00:36:06,804 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:36:06,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-11-30 00:36:06,806 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-30 00:36:06,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:36:06,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:36:06,807 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:06,812 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:36:06,813 INFO L794 eck$LassoCheckResult]: Stem: 753#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); 751#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 752#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 744#L71 base2flt_#res := base2flt_~__retres4~0; 745#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; 749#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 734#L71-1 base2flt_#res := base2flt_~__retres4~0; 735#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; 743#L21-2 assume !(0 == base2flt_~m % 4294967296); 750#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 736#L49-8 [2020-11-30 00:36:06,813 INFO L796 eck$LassoCheckResult]: Loop: 736#L49-8 assume !false; 732#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 733#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 736#L49-8 [2020-11-30 00:36:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2020-11-30 00:36:06,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:06,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078593149] [2020-11-30 00:36:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:06,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:06,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:06,863 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:06,867 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-11-30 00:36:06,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:06,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772104010] [2020-11-30 00:36:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:06,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:06,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:06,893 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:06,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:06,894 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2020-11-30 00:36:06,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:06,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426299489] [2020-11-30 00:36:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:06,922 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:06,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:06,957 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:07,000 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:07,000 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:07,001 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:07,001 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:07,001 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:36:07,001 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:07,001 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:07,001 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:07,001 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration4_Loop [2020-11-30 00:36:07,001 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:07,001 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:07,003 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 00:36:07,013 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 00:36:07,123 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:07,123 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:07,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:36:07,128 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_238a01e4-7af7-4def-8610-bf29e14dafef/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) [2020-11-30 00:36:07,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:36:07,174 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:07,215 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:36:07,218 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:07,219 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:07,219 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:07,219 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:07,219 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:36:07,219 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:07,219 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:07,219 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:07,219 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration4_Loop [2020-11-30 00:36:07,219 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:07,219 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:07,220 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 00:36:07,230 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 00:36:07,403 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:07,403 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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) [2020-11-30 00:36:07,413 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:07,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:36:07,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:36:07,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:36:07,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:36:07,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:36:07,417 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:36:07,417 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:36:07,420 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:36:07,424 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:36:07,424 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_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:07,431 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:36:07,431 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:36:07,431 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:36:07,431 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 00:36:07,467 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:36:07,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:07,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:36:07,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:07,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:36:07,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:07,543 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 00:36:07,544 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 00:36:07,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-30 00:36:07,554 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 00:36:07,555 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 00:36:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:36:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2020-11-30 00:36:07,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:36:07,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:07,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-30 00:36:07,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:07,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-30 00:36:07,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:07,557 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2020-11-30 00:36:07,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:36:07,558 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2020-11-30 00:36:07,558 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-11-30 00:36:07,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-11-30 00:36:07,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-11-30 00:36:07,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:36:07,559 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:36:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-11-30 00:36:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 00:36:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:36:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-30 00:36:07,561 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:36:07,561 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:36:07,562 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:36:07,562 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-30 00:36:07,562 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-30 00:36:07,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:36:07,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:36:07,563 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:36:07,563 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:36:07,563 INFO L794 eck$LassoCheckResult]: Stem: 871#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); 869#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_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;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; 870#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 861#L71 base2flt_#res := base2flt_~__retres4~0; 862#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; 867#L21-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 853#L71-1 base2flt_#res := base2flt_~__retres4~0; 854#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; 863#L21-2 assume !(0 == base2flt_~m % 4294967296); 868#L27-2 assume base2flt_~m % 4294967296 < 16777216; 872#L39-5 [2020-11-30 00:36:07,563 INFO L796 eck$LassoCheckResult]: Loop: 872#L39-5 assume !false; 859#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 860#L39-4 assume base2flt_~m % 4294967296 < 16777216; 872#L39-5 [2020-11-30 00:36:07,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2020-11-30 00:36:07,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:07,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183926433] [2020-11-30 00:36:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:07,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:07,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:07,617 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:07,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:07,618 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-11-30 00:36:07,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:07,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436316203] [2020-11-30 00:36:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:07,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:07,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:07,637 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:07,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:07,638 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2020-11-30 00:36:07,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:36:07,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378752036] [2020-11-30 00:36:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:36:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:07,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:36:07,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:36:07,705 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:36:07,737 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:07,737 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:07,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:07,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:07,737 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:36:07,738 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:07,738 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:07,738 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:07,738 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration5_Loop [2020-11-30 00:36:07,738 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:07,738 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:07,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:36:07,749 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 00:36:07,833 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:07,833 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:07,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:36:07,842 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_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:07,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:36:07,884 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 00:36:07,924 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:36:07,926 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:36:07,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:36:07,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:36:07,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:36:07,927 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:36:07,927 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:36:07,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:36:07,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:36:07,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration5_Loop [2020-11-30 00:36:07,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:36:07,928 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:36:07,929 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 00:36:07,937 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 00:36:08,020 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:36:08,020 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:08,027 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 00:36:08,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:36:08,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:36:08,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:36:08,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:36:08,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:36:08,031 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:36:08,031 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 00:36:08,034 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:36:08,040 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:36:08,040 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_238a01e4-7af7-4def-8610-bf29e14dafef/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 00:36:08,044 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:36:08,044 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:36:08,044 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:36:08,044 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 00:36:08,081 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:36:08,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:36:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:08,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:36:08,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:36:08,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:36:08,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:36:08,165 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 00:36:08,165 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 00:36:08,165 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-11-30 00:36:08,173 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 00:36:08,174 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 00:36:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-30 00:36:08,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-11-30 00:36:08,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-30 00:36:08,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:08,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-30 00:36:08,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:08,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-30 00:36:08,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:36:08,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-11-30 00:36:08,176 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:36:08,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-30 00:36:08,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:36:08,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:36:08,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:36:08,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:36:08,177 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:36:08,177 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:36:08,177 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:36:08,177 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-30 00:36:08,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:36:08,177 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:36:08,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:36:08,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:36:08 BoogieIcfgContainer [2020-11-30 00:36:08,187 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:36:08,188 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:36:08,188 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:36:08,189 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:36:08,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:36:03" (3/4) ... [2020-11-30 00:36:08,193 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:36:08,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:36:08,196 INFO L168 Benchmark]: Toolchain (without parser) took 5904.63 ms. Allocated memory was 88.1 MB in the beginning and 134.2 MB in the end (delta: 46.1 MB). Free memory was 66.8 MB in the beginning and 41.5 MB in the end (delta: 25.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,197 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 64.9 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:36:08,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.25 ms. Allocated memory is still 88.1 MB. Free memory was 66.5 MB in the beginning and 62.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.67 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 59.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,206 INFO L168 Benchmark]: Boogie Preprocessor took 42.79 ms. Allocated memory is still 88.1 MB. Free memory was 59.6 MB in the beginning and 57.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:36:08,232 INFO L168 Benchmark]: RCFGBuilder took 817.31 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 57.8 MB in the beginning and 68.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,233 INFO L168 Benchmark]: BuchiAutomizer took 4603.23 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 68.1 MB in the beginning and 41.5 MB in the end (delta: 26.6 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:08,233 INFO L168 Benchmark]: Witness Printer took 4.92 ms. Allocated memory is still 134.2 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:36:08,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 64.9 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.25 ms. Allocated memory is still 88.1 MB. Free memory was 66.5 MB in the beginning and 62.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.67 ms. Allocated memory is still 88.1 MB. Free memory was 61.9 MB in the beginning and 59.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.79 ms. Allocated memory is still 88.1 MB. Free memory was 59.6 MB in the beginning and 57.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 817.31 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 57.8 MB in the beginning and 68.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4603.23 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 68.1 MB in the beginning and 41.5 MB in the end (delta: 26.6 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.92 ms. Allocated memory is still 134.2 MB. Free memory is still 41.5 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 4.5s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. 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: 281 SDtfs, 248 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: 77ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...