./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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 09f813c788ce76f2fed6ff9e53c54c81ca842bfc ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:19:14,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:19:14,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:19:14,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:19:14,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:19:14,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:19:14,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:19:14,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:19:14,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:19:14,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:19:14,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:19:14,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:19:14,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:19:14,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:19:14,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:19:14,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:19:14,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:19:14,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:19:14,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:19:14,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:19:14,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:19:14,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:19:14,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:19:14,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:19:14,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:19:14,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:19:14,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:19:14,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:19:14,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:19:14,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:19:14,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:19:14,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:19:14,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:19:14,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:19:14,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:19:14,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:19:14,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:19:14,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:19:14,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:19:14,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:19:14,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:19:14,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 19:19:14,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:19:14,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:19:14,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:19:14,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:19:14,934 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:19:14,934 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:19:14,934 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:19:14,935 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:19:14,935 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:19:14,935 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:19:14,936 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:19:14,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:19:14,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:19:14,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:19:14,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:19:14,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:19:14,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:19:14,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:19:14,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:19:14,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:19:14,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:19:14,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:19:14,939 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:19:14,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:19:14,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:19:14,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:19:14,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:19:14,940 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:19:14,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:19:14,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:19:14,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:19:14,942 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:19:14,944 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:19:14,945 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09f813c788ce76f2fed6ff9e53c54c81ca842bfc [2020-11-29 19:19:15,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:19:15,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:19:15,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:19:15,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:19:15,291 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:19:15,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-11-29 19:19:15,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/data/56ab74781/b51db5bdd76841668d7cb3eaa2ffa208/FLAG5c652a974 [2020-11-29 19:19:15,905 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:19:15,906 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-11-29 19:19:15,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/data/56ab74781/b51db5bdd76841668d7cb3eaa2ffa208/FLAG5c652a974 [2020-11-29 19:19:16,232 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/data/56ab74781/b51db5bdd76841668d7cb3eaa2ffa208 [2020-11-29 19:19:16,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:19:16,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:19:16,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:19:16,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:19:16,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:19:16,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38040f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16, skipping insertion in model container [2020-11-29 19:19:16,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:19:16,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:19:16,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:19:16,573 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:19:16,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:19:16,688 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:19:16,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16 WrapperNode [2020-11-29 19:19:16,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:19:16,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:19:16,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:19:16,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:19:16,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:19:16,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:19:16,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:19:16,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:19:16,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... [2020-11-29 19:19:16,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:19:16,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:19:16,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:19:16,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:19:16,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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 [2020-11-29 19:19:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:19:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:19:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:19:16,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:19:17,578 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:19:17,578 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 19:19:17,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:19:17 BoogieIcfgContainer [2020-11-29 19:19:17,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:19:17,581 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:19:17,581 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:19:17,585 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:19:17,586 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:19:17,586 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:19:16" (1/3) ... [2020-11-29 19:19:17,588 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f263978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:19:17, skipping insertion in model container [2020-11-29 19:19:17,588 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:19:17,588 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:16" (2/3) ... [2020-11-29 19:19:17,588 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f263978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:19:17, skipping insertion in model container [2020-11-29 19:19:17,589 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:19:17,589 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:19:17" (3/3) ... [2020-11-29 19:19:17,590 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-11-29 19:19:17,658 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:19:17,658 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:19:17,658 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:19:17,658 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:19:17,659 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:19:17,659 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:19:17,659 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:19:17,659 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:19:17,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-11-29 19:19:17,718 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-11-29 19:19:17,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:19:17,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:19:17,725 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 19:19:17,726 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:19:17,726 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:19:17,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2020-11-29 19:19:17,732 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2020-11-29 19:19:17,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:19:17,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:19:17,733 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 19:19:17,733 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:19:17,740 INFO L794 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 15#L21true assume !(0 == base2flt_~m % 4294967296); 44#L27true assume !(base2flt_~m % 4294967296 < 16777216); 41#L49-2true [2020-11-29 19:19:17,741 INFO L796 eck$LassoCheckResult]: Loop: 41#L49-2true assume !false; 64#L50true assume base2flt_~m % 4294967296 >= 33554432; 10#L51true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 41#L49-2true [2020-11-29 19:19:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:17,747 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-11-29 19:19:17,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:17,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719640331] [2020-11-29 19:19:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:17,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719640331] [2020-11-29 19:19:17,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:19:17,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:19:17,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128125772] [2020-11-29 19:19:17,954 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:19:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:17,956 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-11-29 19:19:17,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:17,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884559065] [2020-11-29 19:19:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:17,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:17,981 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:18,000 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:19:18,044 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:18,045 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:18,045 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:18,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:18,045 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:19:18,046 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:18,046 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:18,046 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:18,046 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2020-11-29 19:19:18,046 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:18,047 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:18,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:18,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:18,227 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:18,228 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) [2020-11-29 19:19:18,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:18,244 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:18,291 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:19:18,291 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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 [2020-11-29 19:19:18,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:18,304 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) [2020-11-29 19:19:18,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:19:18,358 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:18,388 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:19:18,389 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:18,390 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:18,390 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:18,390 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:18,390 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:19:18,390 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:18,390 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:18,391 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:18,391 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2020-11-29 19:19:18,391 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:18,391 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:18,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:18,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:18,572 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:18,577 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:18,667 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 [2020-11-29 19:19:18,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:18,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:18,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:18,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:18,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:18,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:18,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:19:18,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:18,736 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 [2020-11-29 19:19:18,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:18,739 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:18,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:18,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:18,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:18,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:18,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:18,744 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:19:18,749 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:19:18,749 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:18,759 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:19:18,759 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:19:18,760 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:19:18,760 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:18,807 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:19:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:18,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:19:18,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:18,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:19:18,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:18,943 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 [2020-11-29 19:19:18,945 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states. Second operand 3 states. [2020-11-29 19:19:19,022 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states.. Second operand 3 states. Result 206 states and 346 transitions. Complement of second has 6 states. [2020-11-29 19:19:19,023 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 [2020-11-29 19:19:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:19:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2020-11-29 19:19:19,029 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 19:19:19,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:19,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 19:19:19,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:19,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 229 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-29 19:19:19,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:19,033 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 346 transitions. [2020-11-29 19:19:19,047 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2020-11-29 19:19:19,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 79 states and 120 transitions. [2020-11-29 19:19:19,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2020-11-29 19:19:19,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-11-29 19:19:19,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2020-11-29 19:19:19,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:19:19,058 INFO L691 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2020-11-29 19:19:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2020-11-29 19:19:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-11-29 19:19:19,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 19:19:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2020-11-29 19:19:19,089 INFO L714 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2020-11-29 19:19:19,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:19:19,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:19:19,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:19:19,094 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand 3 states. [2020-11-29 19:19:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:19:19,222 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2020-11-29 19:19:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:19:19,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2020-11-29 19:19:19,225 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-29 19:19:19,226 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2020-11-29 19:19:19,226 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-11-29 19:19:19,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-29 19:19:19,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2020-11-29 19:19:19,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:19:19,228 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-29 19:19:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2020-11-29 19:19:19,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 19:19:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:19:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-11-29 19:19:19,242 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-29 19:19:19,243 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-11-29 19:19:19,243 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:19:19,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2020-11-29 19:19:19,245 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-29 19:19:19,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:19:19,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:19:19,247 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:19:19,247 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:19:19,250 INFO L794 eck$LassoCheckResult]: Stem: 459#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 439#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 440#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 436#L71 base2flt_#res := base2flt_~__retres4~0; 437#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 458#L21-1 assume !(0 == base2flt_~m % 4294967296); 425#L27-1 assume !(base2flt_~m % 4294967296 < 16777216); 426#L49-5 [2020-11-29 19:19:19,250 INFO L796 eck$LassoCheckResult]: Loop: 426#L49-5 assume !false; 443#L50-1 assume base2flt_~m % 4294967296 >= 33554432; 438#L51-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 426#L49-5 [2020-11-29 19:19:19,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:19,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-11-29 19:19:19,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:19,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064297431] [2020-11-29 19:19:19,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:19,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064297431] [2020-11-29 19:19:19,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:19:19,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:19:19,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32689726] [2020-11-29 19:19:19,326 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:19:19,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:19,327 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-11-29 19:19:19,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:19,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58630662] [2020-11-29 19:19:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:19,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:19,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:19,347 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:19:19,391 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:19,391 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:19,392 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:19,392 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:19,392 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:19:19,392 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:19,392 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:19,392 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:19,392 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2020-11-29 19:19:19,392 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:19,393 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:19,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:19,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:19,526 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:19,526 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:19,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:19,568 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:19,613 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:19:19,614 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:19,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:19,624 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:19,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:19:19,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:19:19,698 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:19:19,699 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:19,699 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:19,700 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:19,700 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:19,700 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:19:19,700 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:19,700 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:19,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:19,700 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2020-11-29 19:19:19,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:19,700 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:19,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:19,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:19,868 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-11-29 19:19:19,924 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:19,924 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) [2020-11-29 19:19:19,940 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 [2020-11-29 19:19:19,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:19,942 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:19,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:19,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:19,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:19,948 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:19,948 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:19,955 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) [2020-11-29 19:19:20,003 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 [2020-11-29 19:19:20,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:20,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:20,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:20,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:20,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:20,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:20,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:20,012 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:19:20,048 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:19:20,048 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) [2020-11-29 19:19:20,055 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:19:20,055 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:19:20,056 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:19:20,056 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:20,096 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:19:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:20,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:19:20,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:20,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:19:20,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:20,172 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 [2020-11-29 19:19:20,172 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand 3 states. [2020-11-29 19:19:20,192 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 63 states and 85 transitions. Complement of second has 5 states. [2020-11-29 19:19:20,193 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 [2020-11-29 19:19:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:19:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2020-11-29 19:19:20,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 19:19:20,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:20,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-29 19:19:20,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:20,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-29 19:19:20,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:20,195 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-11-29 19:19:20,197 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-11-29 19:19:20,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2020-11-29 19:19:20,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2020-11-29 19:19:20,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2020-11-29 19:19:20,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2020-11-29 19:19:20,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:19:20,199 INFO L691 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-11-29 19:19:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2020-11-29 19:19:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2020-11-29 19:19:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 19:19:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-11-29 19:19:20,209 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-11-29 19:19:20,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:19:20,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:19:20,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:19:20,212 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 3 states. [2020-11-29 19:19:20,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:19:20,302 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2020-11-29 19:19:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:19:20,304 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2020-11-29 19:19:20,305 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 19:19:20,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2020-11-29 19:19:20,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-29 19:19:20,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-29 19:19:20,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-11-29 19:19:20,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:19:20,307 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-11-29 19:19:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-11-29 19:19:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-29 19:19:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 19:19:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-11-29 19:19:20,310 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-29 19:19:20,310 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-11-29 19:19:20,310 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:19:20,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2020-11-29 19:19:20,314 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 19:19:20,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:19:20,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:19:20,316 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:19:20,316 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:19:20,316 INFO L794 eck$LassoCheckResult]: Stem: 677#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 658#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 659#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 656#L71 base2flt_#res := base2flt_~__retres4~0; 657#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 676#L21-1 assume !(0 == base2flt_~m % 4294967296); 646#L27-1 assume base2flt_~m % 4294967296 < 16777216; 647#L39-3 [2020-11-29 19:19:20,319 INFO L796 eck$LassoCheckResult]: Loop: 647#L39-3 assume !false; 675#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 667#L39-2 assume base2flt_~m % 4294967296 < 16777216; 647#L39-3 [2020-11-29 19:19:20,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:20,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-11-29 19:19:20,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:20,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036928740] [2020-11-29 19:19:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:20,344 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:20,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:20,376 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:19:20,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:20,377 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-11-29 19:19:20,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:20,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259374513] [2020-11-29 19:19:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:20,383 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:20,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:20,396 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:19:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:20,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-11-29 19:19:20,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:20,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370801193] [2020-11-29 19:19:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:20,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:20,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:20,447 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:19:20,491 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:20,491 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:20,491 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:20,491 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:20,491 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:19:20,491 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:20,491 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:20,491 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:20,492 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2020-11-29 19:19:20,492 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:20,492 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:20,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:20,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:20,608 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:20,608 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:20,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:20,616 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:20,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:19:20,663 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:20,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:20,679 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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 [2020-11-29 19:19:20,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:19:20,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:19:20,760 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:19:20,761 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:20,761 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:20,761 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:20,762 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:20,762 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:19:20,762 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:20,762 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:20,762 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:20,762 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2020-11-29 19:19:20,762 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:20,762 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:20,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:20,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:20,937 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:20,937 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:20,948 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 [2020-11-29 19:19:20,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:20,950 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:20,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:20,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:20,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:20,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:20,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:20,961 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:21,005 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 [2020-11-29 19:19:21,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:21,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:21,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:21,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:21,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:21,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:21,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:19:21,015 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:19:21,017 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:19:21,018 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:21,027 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:19:21,031 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:19:21,031 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:19:21,031 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-11-29 19:19:21,072 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:19:21,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:21,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:19:21,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:21,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:19:21,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:21,201 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 [2020-11-29 19:19:21,201 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-29 19:19:21,218 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 39 states and 50 transitions. Complement of second has 5 states. [2020-11-29 19:19:21,220 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 [2020-11-29 19:19:21,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 19:19:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-11-29 19:19:21,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-29 19:19:21,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:21,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-29 19:19:21,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:21,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-29 19:19:21,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:21,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-11-29 19:19:21,223 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-29 19:19:21,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2020-11-29 19:19:21,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2020-11-29 19:19:21,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2020-11-29 19:19:21,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2020-11-29 19:19:21,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:19:21,225 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2020-11-29 19:19:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2020-11-29 19:19:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-29 19:19:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:19:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-11-29 19:19:21,238 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-29 19:19:21,238 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-29 19:19:21,238 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:19:21,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-11-29 19:19:21,239 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-29 19:19:21,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:19:21,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:19:21,240 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:19:21,240 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:19:21,241 INFO L794 eck$LassoCheckResult]: Stem: 802#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 780#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 781#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L71 base2flt_#res := base2flt_~__retres4~0; 779#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 801#L21-1 assume !(0 == base2flt_~m % 4294967296); 768#L27-1 assume base2flt_~m % 4294967296 < 16777216; 769#L39-3 assume !false; 799#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 774#L71-1 base2flt_#res := base2flt_~__retres4~0; 775#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 798#L21-2 assume !(0 == base2flt_~m % 4294967296); 786#L27-2 assume !(base2flt_~m % 4294967296 < 16777216); 777#L49-8 [2020-11-29 19:19:21,243 INFO L796 eck$LassoCheckResult]: Loop: 777#L49-8 assume !false; 792#L50-2 assume base2flt_~m % 4294967296 >= 33554432; 776#L51-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 777#L49-8 [2020-11-29 19:19:21,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:21,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2020-11-29 19:19:21,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:21,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184861303] [2020-11-29 19:19:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:21,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:21,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184861303] [2020-11-29 19:19:21,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:19:21,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:19:21,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964957822] [2020-11-29 19:19:21,317 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:19:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:21,318 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-11-29 19:19:21,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:21,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543451947] [2020-11-29 19:19:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:21,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:21,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:21,356 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:19:21,393 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:21,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:21,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:21,393 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:21,393 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:19:21,393 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:21,393 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:21,394 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:21,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2020-11-29 19:19:21,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:21,394 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:21,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:21,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:21,535 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:21,535 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) [2020-11-29 19:19:21,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:21,547 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:21,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:19:21,600 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:19:21,650 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:19:21,653 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:21,653 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:21,653 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:21,653 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:21,653 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:19:21,654 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:21,654 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:21,654 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:21,654 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2020-11-29 19:19:21,654 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:21,654 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:21,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:21,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:21,804 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:21,804 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) [2020-11-29 19:19:21,816 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 [2020-11-29 19:19:21,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:21,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:21,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:21,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:21,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:21,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:21,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:21,823 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:19:21,827 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:19:21,827 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) [2020-11-29 19:19:21,834 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:19:21,834 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:19:21,835 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:19:21,835 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:21,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:19:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:21,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:19:21,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:21,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:19:21,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:21,950 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 [2020-11-29 19:19:21,950 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand 3 states. [2020-11-29 19:19:21,978 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 52 states and 65 transitions. Complement of second has 5 states. [2020-11-29 19:19:21,981 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 [2020-11-29 19:19:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:19:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2020-11-29 19:19:21,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-29 19:19:21,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:21,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2020-11-29 19:19:21,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:21,982 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-29 19:19:21,982 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:21,983 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2020-11-29 19:19:21,984 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-29 19:19:21,985 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2020-11-29 19:19:21,985 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-11-29 19:19:21,985 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-11-29 19:19:21,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-11-29 19:19:22,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:19:22,003 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-11-29 19:19:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-11-29 19:19:22,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-11-29 19:19:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 19:19:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2020-11-29 19:19:22,023 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2020-11-29 19:19:22,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:19:22,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:19:22,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:19:22,026 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand 3 states. [2020-11-29 19:19:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:19:22,103 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2020-11-29 19:19:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:19:22,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2020-11-29 19:19:22,104 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-29 19:19:22,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2020-11-29 19:19:22,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-11-29 19:19:22,105 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2020-11-29 19:19:22,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2020-11-29 19:19:22,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:19:22,106 INFO L691 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2020-11-29 19:19:22,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2020-11-29 19:19:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-11-29 19:19:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 19:19:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-11-29 19:19:22,109 INFO L714 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-11-29 19:19:22,109 INFO L594 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-11-29 19:19:22,109 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 19:19:22,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2020-11-29 19:19:22,110 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-29 19:19:22,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:19:22,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:19:22,111 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:19:22,111 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:19:22,112 INFO L794 eck$LassoCheckResult]: Stem: 1037#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1013#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1014#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1011#L71 base2flt_#res := base2flt_~__retres4~0; 1012#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1036#L21-1 assume !(0 == base2flt_~m % 4294967296); 1000#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1001#L39-3 assume !false; 1035#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1023#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1016#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1006#L71-1 base2flt_#res := base2flt_~__retres4~0; 1007#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1033#L21-2 assume !(0 == base2flt_~m % 4294967296); 1019#L27-2 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-11-29 19:19:22,112 INFO L796 eck$LassoCheckResult]: Loop: 1021#L39-5 assume !false; 1031#L30-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1032#L39-4 assume base2flt_~m % 4294967296 < 16777216; 1021#L39-5 [2020-11-29 19:19:22,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:22,112 INFO L82 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2020-11-29 19:19:22,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:22,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381955934] [2020-11-29 19:19:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:22,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381955934] [2020-11-29 19:19:22,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:19:22,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:19:22,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570580743] [2020-11-29 19:19:22,232 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:19:22,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:22,233 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-11-29 19:19:22,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:22,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284137244] [2020-11-29 19:19:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:22,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:22,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:22,253 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:19:22,306 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:22,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:22,307 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:22,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:22,307 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:19:22,307 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:22,307 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:22,307 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:22,307 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2020-11-29 19:19:22,307 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:22,307 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:22,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:22,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:22,422 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:22,422 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:22,436 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:22,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:19:22,488 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:19:22,488 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/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) [2020-11-29 19:19:22,494 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:22,494 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:22,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:19:22,543 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:22,576 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:19:22,577 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:22,577 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:22,577 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:22,577 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:22,577 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:19:22,577 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:22,577 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:22,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:22,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2020-11-29 19:19:22,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:22,578 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:22,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:22,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:22,695 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:22,695 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:22,701 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 [2020-11-29 19:19:22,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:22,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:22,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:22,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:22,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:22,708 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:22,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:22,711 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:22,738 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:19:22,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:22,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:22,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:22,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:22,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:22,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:22,742 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:19:22,745 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:19:22,748 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:19:22,748 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:22,751 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:19:22,751 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:19:22,751 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:19:22,751 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-11-29 19:19:22,776 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:19:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:22,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:19:22,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:22,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:19:22,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:22,881 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 [2020-11-29 19:19:22,881 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-29 19:19:22,907 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 56 states and 69 transitions. Complement of second has 5 states. [2020-11-29 19:19:22,912 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 [2020-11-29 19:19:22,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 19:19:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2020-11-29 19:19:22,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-29 19:19:22,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:22,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-29 19:19:22,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:22,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2020-11-29 19:19:22,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:22,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2020-11-29 19:19:22,915 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-29 19:19:22,916 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2020-11-29 19:19:22,917 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2020-11-29 19:19:22,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2020-11-29 19:19:22,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2020-11-29 19:19:22,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:19:22,917 INFO L691 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-11-29 19:19:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2020-11-29 19:19:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-11-29 19:19:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 19:19:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-11-29 19:19:22,921 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-11-29 19:19:22,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:19:22,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:19:22,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:19:22,922 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 4 states. [2020-11-29 19:19:23,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:19:23,009 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-11-29 19:19:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:19:23,010 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2020-11-29 19:19:23,011 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 19:19:23,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2020-11-29 19:19:23,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-29 19:19:23,012 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-29 19:19:23,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2020-11-29 19:19:23,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:19:23,012 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-11-29 19:19:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2020-11-29 19:19:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-11-29 19:19:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 19:19:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-11-29 19:19:23,016 INFO L714 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-11-29 19:19:23,016 INFO L594 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-11-29 19:19:23,016 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 19:19:23,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2020-11-29 19:19:23,017 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-29 19:19:23,017 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:19:23,017 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:19:23,018 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:19:23,018 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:19:23,019 INFO L794 eck$LassoCheckResult]: Stem: 1297#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1272#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1273#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1270#L71 base2flt_#res := base2flt_~__retres4~0; 1271#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1296#L21-1 assume !(0 == base2flt_~m % 4294967296); 1259#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1260#L39-3 assume !false; 1295#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1282#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1284#L39-3 assume !false; 1294#L30-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1265#L71-1 base2flt_#res := base2flt_~__retres4~0; 1266#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1293#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1261#L71-2 base2flt_#res := base2flt_~__retres4~0; 1262#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1289#L21-3 assume !(0 == base2flt_~m % 4294967296); 1276#L27-3 assume !(base2flt_~m % 4294967296 < 16777216); 1264#L49-11 [2020-11-29 19:19:23,019 INFO L796 eck$LassoCheckResult]: Loop: 1264#L49-11 assume !false; 1281#L50-3 assume base2flt_~m % 4294967296 >= 33554432; 1263#L51-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1264#L49-11 [2020-11-29 19:19:23,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:23,019 INFO L82 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2020-11-29 19:19:23,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:23,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743813502] [2020-11-29 19:19:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:23,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743813502] [2020-11-29 19:19:23,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302903699] [2020-11-29 19:19:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:19:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:23,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:19:23,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:23,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:19:23,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-29 19:19:23,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090735117] [2020-11-29 19:19:23,218 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:19:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:23,219 INFO L82 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2020-11-29 19:19:23,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:23,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784601871] [2020-11-29 19:19:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:23,233 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:23,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:23,245 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:19:23,284 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:23,284 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:23,284 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:23,284 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:23,284 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:19:23,284 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:23,284 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:23,284 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:23,284 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2020-11-29 19:19:23,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:23,285 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:23,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:23,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:23,474 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:23,474 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:23,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:23,478 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:23,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:19:23,527 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:23,562 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:19:23,563 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:23,563 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:23,564 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:23,564 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:23,564 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:19:23,564 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:23,564 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:23,564 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:23,564 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2020-11-29 19:19:23,564 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:23,564 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:23,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:23,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:23,715 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:23,715 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:23,728 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 [2020-11-29 19:19:23,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:23,730 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:23,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:23,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:23,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:23,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:23,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:23,738 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:19:23,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:19:23,741 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:23,744 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:19:23,744 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:19:23,744 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:19:23,744 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-11-29 19:19:23,769 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:19:23,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:23,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:19:23,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:23,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:19:23,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:23,842 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 [2020-11-29 19:19:23,842 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand 3 states. [2020-11-29 19:19:23,864 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 46 states and 59 transitions. Complement of second has 4 states. [2020-11-29 19:19:23,865 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 [2020-11-29 19:19:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:19:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2020-11-29 19:19:23,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2020-11-29 19:19:23,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:23,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2020-11-29 19:19:23,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:23,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2020-11-29 19:19:23,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:23,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2020-11-29 19:19:23,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:19:23,869 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2020-11-29 19:19:23,869 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-11-29 19:19:23,869 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-11-29 19:19:23,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-11-29 19:19:23,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:19:23,870 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-29 19:19:23,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-11-29 19:19:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-29 19:19:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 19:19:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-11-29 19:19:23,873 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-11-29 19:19:23,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:19:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:19:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:19:23,874 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 5 states. [2020-11-29 19:19:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:19:23,946 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-11-29 19:19:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:19:23,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2020-11-29 19:19:23,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:19:23,948 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2020-11-29 19:19:23,949 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2020-11-29 19:19:23,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-11-29 19:19:23,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2020-11-29 19:19:23,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:19:23,949 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-11-29 19:19:23,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2020-11-29 19:19:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-11-29 19:19:23,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 19:19:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-11-29 19:19:23,953 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-11-29 19:19:23,953 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-11-29 19:19:23,953 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 19:19:23,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2020-11-29 19:19:23,953 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:19:23,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:19:23,954 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:19:23,954 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:19:23,955 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:19:23,955 INFO L794 eck$LassoCheckResult]: Stem: 1608#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1586#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_#t~ret15, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1587#L21 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1583#L71 base2flt_#res := base2flt_~__retres4~0; 1584#L72 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1607#L21-1 assume !(0 == base2flt_~m % 4294967296); 1574#L27-1 assume base2flt_~m % 4294967296 < 16777216; 1575#L39-3 assume !false; 1606#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1594#L39-2 assume base2flt_~m % 4294967296 < 16777216; 1595#L39-3 assume !false; 1611#L30-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1613#L39-2 assume !(base2flt_~m % 4294967296 < 16777216); 1588#L65-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1578#L71-1 base2flt_#res := base2flt_~__retres4~0; 1579#L72-1 main_#t~ret12 := base2flt_#res;main_~one~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1604#L21-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1576#L71-2 base2flt_#res := base2flt_~__retres4~0; 1577#L72-2 main_#t~ret13 := base2flt_#res;main_~a~0 := main_#t~ret13;havoc main_#t~ret13;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1600#L21-3 assume !(0 == base2flt_~m % 4294967296); 1589#L27-3 assume base2flt_~m % 4294967296 < 16777216; 1590#L39-7 [2020-11-29 19:19:23,955 INFO L796 eck$LassoCheckResult]: Loop: 1590#L39-7 assume !false; 1598#L30-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1599#L39-6 assume base2flt_~m % 4294967296 < 16777216; 1590#L39-7 [2020-11-29 19:19:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:23,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2020-11-29 19:19:23,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:23,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217410365] [2020-11-29 19:19:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:24,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217410365] [2020-11-29 19:19:24,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488936916] [2020-11-29 19:19:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:19:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:24,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:19:24,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:24,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:19:24,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-29 19:19:24,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849336741] [2020-11-29 19:19:24,298 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:19:24,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:24,299 INFO L82 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2020-11-29 19:19:24,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:19:24,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474761776] [2020-11-29 19:19:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:19:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:24,303 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:19:24,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:19:24,307 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:19:24,342 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:24,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:24,342 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:24,342 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:24,342 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:19:24,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:24,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:24,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:24,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2020-11-29 19:19:24,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:24,343 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:24,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:24,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:24,448 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:24,448 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:24,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:24,460 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:24,506 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:19:24,506 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:24,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:19:24,517 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:19:24,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:19:24,567 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:24,613 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:19:24,615 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:19:24,616 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:19:24,616 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:19:24,616 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:19:24,616 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:19:24,616 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:24,616 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:19:24,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:19:24,616 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2020-11-29 19:19:24,617 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:19:24,617 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:19:24,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:24,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:19:24,752 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2020-11-29 19:19:24,798 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:19:24,798 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:24,807 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 [2020-11-29 19:19:24,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:24,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:24,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:24,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:24,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:24,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:24,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:19:24,821 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:24,854 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 [2020-11-29 19:19:24,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:19:24,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:19:24,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:19:24,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:19:24,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:19:24,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:19:24,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:19:24,859 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:19:24,862 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:19:24,862 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_0f46ccb9-c93a-4032-99b5-0aaa6fe7a6ee/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:19:24,864 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:19:24,864 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:19:24,864 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:19:24,865 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2020-11-29 19:19:24,894 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:19:24,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:25,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:19:25,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:25,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:19:25,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:19:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:25,061 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 [2020-11-29 19:19:25,061 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-11-29 19:19:25,068 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 44 states and 54 transitions. Complement of second has 4 states. [2020-11-29 19:19:25,069 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 [2020-11-29 19:19:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 19:19:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2020-11-29 19:19:25,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2020-11-29 19:19:25,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:25,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2020-11-29 19:19:25,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:25,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2020-11-29 19:19:25,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:19:25,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-11-29 19:19:25,071 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:19:25,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2020-11-29 19:19:25,071 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:19:25,071 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:19:25,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:19:25,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:19:25,071 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:19:25,071 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:19:25,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:19:25,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:19:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:19:25,072 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2020-11-29 19:19:25,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:19:25,072 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 19:19:25,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:19:25,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 19:19:25,073 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:19:25,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:19:25,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:19:25,073 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:19:25,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:19:25,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:19:25,073 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:19:25,073 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:19:25,073 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:19:25,073 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 19:19:25,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:19:25,073 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:19:25,073 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:19:25,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:19:25 BoogieIcfgContainer [2020-11-29 19:19:25,078 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:19:25,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:19:25,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:19:25,079 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:19:25,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:19:17" (3/4) ... [2020-11-29 19:19:25,083 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:19:25,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:19:25,085 INFO L168 Benchmark]: Toolchain (without parser) took 8848.37 ms. Allocated memory was 96.5 MB in the beginning and 159.4 MB in the end (delta: 62.9 MB). Free memory was 61.9 MB in the beginning and 106.2 MB in the end (delta: -44.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:19:25,085 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 69.8 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:19:25,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.96 ms. Allocated memory is still 96.5 MB. Free memory was 61.6 MB in the beginning and 70.5 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:19:25,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.49 ms. Allocated memory is still 96.5 MB. Free memory was 70.5 MB in the beginning and 68.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:19:25,088 INFO L168 Benchmark]: Boogie Preprocessor took 29.82 ms. Allocated memory is still 96.5 MB. Free memory was 68.4 MB in the beginning and 66.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:19:25,088 INFO L168 Benchmark]: RCFGBuilder took 778.20 ms. Allocated memory is still 96.5 MB. Free memory was 66.3 MB in the beginning and 39.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:19:25,089 INFO L168 Benchmark]: BuchiAutomizer took 7496.93 ms. Allocated memory was 96.5 MB in the beginning and 159.4 MB in the end (delta: 62.9 MB). Free memory was 39.0 MB in the beginning and 107.3 MB in the end (delta: -68.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:19:25,090 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 159.4 MB. Free memory was 107.3 MB in the beginning and 106.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:19:25,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 69.8 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 453.96 ms. Allocated memory is still 96.5 MB. Free memory was 61.6 MB in the beginning and 70.5 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.49 ms. Allocated memory is still 96.5 MB. Free memory was 70.5 MB in the beginning and 68.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.82 ms. Allocated memory is still 96.5 MB. Free memory was 68.4 MB in the beginning and 66.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 778.20 ms. Allocated memory is still 96.5 MB. Free memory was 66.3 MB in the beginning and 39.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7496.93 ms. Allocated memory was 96.5 MB in the beginning and 159.4 MB in the end (delta: 62.9 MB). Free memory was 39.0 MB in the beginning and 107.3 MB in the end (delta: -68.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.81 ms. Allocated memory is still 159.4 MB. Free memory was 107.3 MB in the beginning and 106.2 MB in the end (delta: 1.0 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 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 5.6s. Construction of modules took 0.4s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 43 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 528 SDtfs, 345 SDslu, 149 SDs, 0 SdLazy, 176 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 103ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...