./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY --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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:25:14,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:25:14,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:25:14,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:25:14,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:25:14,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:25:14,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:25:14,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:25:14,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:25:14,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:25:14,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:25:14,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:25:14,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:25:14,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:25:14,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:25:14,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:25:14,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:25:14,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:25:14,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:25:14,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:25:14,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:25:14,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:25:14,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:25:14,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:25:14,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:25:14,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:25:14,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:25:14,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:25:14,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:25:14,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:25:14,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:25:14,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:25:14,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:25:14,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:25:14,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:25:14,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:25:14,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:25:14,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:25:14,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:25:14,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:25:14,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:25:14,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-07 08:25:14,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:25:14,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:25:14,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:25:14,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:25:14,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:25:14,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:25:14,785 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:25:14,786 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-07 08:25:14,786 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-07 08:25:14,786 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-07 08:25:14,787 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-07 08:25:14,788 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-07 08:25:14,788 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-07 08:25:14,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:25:14,788 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:25:14,788 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:25:14,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:25:14,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:25:14,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:25:14,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-07 08:25:14,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-07 08:25:14,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-07 08:25:14,790 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:25:14,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:25:14,790 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-07 08:25:14,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:25:14,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-07 08:25:14,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:25:14,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:25:14,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:25:14,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:25:14,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:25:14,795 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-07 08:25:14,795 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_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2021-11-07 08:25:15,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:25:15,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:25:15,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:25:15,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:25:15,186 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:25:15,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-07 08:25:15,263 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/data/3e367195b/3bd62ea116094202a52cdb53ff9e2e4a/FLAG077379480 [2021-11-07 08:25:15,824 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:25:15,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-11-07 08:25:15,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/data/3e367195b/3bd62ea116094202a52cdb53ff9e2e4a/FLAG077379480 [2021-11-07 08:25:16,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/data/3e367195b/3bd62ea116094202a52cdb53ff9e2e4a [2021-11-07 08:25:16,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:25:16,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:25:16,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:25:16,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:25:16,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:25:16,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1279aa5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16, skipping insertion in model container [2021-11-07 08:25:16,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:25:16,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:25:16,391 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-07 08:25:16,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:25:16,444 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:25:16,456 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2021-11-07 08:25:16,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:25:16,500 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:25:16,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16 WrapperNode [2021-11-07 08:25:16,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:25:16,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:25:16,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:25:16,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:25:16,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:25:16,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:25:16,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:25:16,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:25:16,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:25:16,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:25:16,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:25:16,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:25:16,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (1/1) ... [2021-11-07 08:25:16,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:16,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:16,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:16,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-07 08:25:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:25:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:25:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:25:16,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:25:17,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:25:17,070 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-11-07 08:25:17,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:25:17 BoogieIcfgContainer [2021-11-07 08:25:17,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:25:17,074 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-07 08:25:17,074 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-07 08:25:17,091 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-07 08:25:17,092 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:25:17,092 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.11 08:25:16" (1/3) ... [2021-11-07 08:25:17,094 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66ea1fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:25:17, skipping insertion in model container [2021-11-07 08:25:17,094 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:25:17,094 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:25:16" (2/3) ... [2021-11-07 08:25:17,095 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66ea1fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:25:17, skipping insertion in model container [2021-11-07 08:25:17,095 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:25:17,095 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:25:17" (3/3) ... [2021-11-07 08:25:17,096 INFO L389 chiAutomizerObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-11-07 08:25:17,174 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-07 08:25:17,174 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-07 08:25:17,174 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-07 08:25:17,174 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-07 08:25:17,175 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-07 08:25:17,175 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-07 08:25:17,175 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-07 08:25:17,175 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-07 08:25:17,199 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 71 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:17,234 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2021-11-07 08:25:17,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:25:17,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:25:17,250 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-07 08:25:17,251 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:25:17,251 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-07 08:25:17,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 71 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:17,264 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2021-11-07 08:25:17,265 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:25:17,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:25:17,267 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-07 08:25:17,267 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:25:17,274 INFO L791 eck$LassoCheckResult]: Stem: 52#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); 38#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; 19#L29true assume !(0 == base2flt_~m % 4294967296); 49#L35true assume !(base2flt_~m % 4294967296 < 16777216); 58#L57-2true [2021-11-07 08:25:17,276 INFO L793 eck$LassoCheckResult]: Loop: 58#L57-2true assume !false; 36#L58true assume base2flt_~m % 4294967296 >= 33554432; 33#L59true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 58#L57-2true [2021-11-07 08:25:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2021-11-07 08:25:17,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:17,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104139975] [2021-11-07 08:25:17,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:17,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:17,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:17,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104139975] [2021-11-07 08:25:17,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104139975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:17,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:17,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:25:17,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848462868] [2021-11-07 08:25:17,628 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 08:25:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2021-11-07 08:25:17,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:17,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593889351] [2021-11-07 08:25:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:17,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:17,653 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:25:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:17,693 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:25:17,759 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:17,760 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:17,760 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:17,760 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:17,760 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:25:17,760 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:17,760 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:17,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:17,761 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2021-11-07 08:25:17,761 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:17,761 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:17,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:17,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:17,929 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:17,930 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:25:17,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:17,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:17,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:17,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-07 08:25:17,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:17,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:18,005 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:25:18,005 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: [] [2021-11-07 08:25:18,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:18,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:18,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:18,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:18,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-07 08:25:18,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:18,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:18,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:18,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:18,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:18,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:18,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-07 08:25:18,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:25:18,083 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:18,122 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:25:18,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-11-07 08:25:18,133 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:18,133 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:18,133 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:18,133 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:18,134 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:25:18,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:18,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:18,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:18,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration1_Loop [2021-11-07 08:25:18,135 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:18,135 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:18,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:18,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:18,245 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:18,248 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:25:18,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:18,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:18,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:18,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-07 08:25:18,252 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:18,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:18,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:18,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:18,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:18,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:18,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:18,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:18,280 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:25:18,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-11-07 08:25:18,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:18,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:18,303 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:18,310 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:18,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-07 08:25:18,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:18,318 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:18,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:18,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:18,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:18,320 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:18,320 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:18,341 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:25:18,354 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:25:18,354 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 08:25:18,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:18,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:18,361 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:18,385 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:25:18,386 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:25:18,386 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:25:18,386 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2021-11-07 08:25:18,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-07 08:25:18,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:18,430 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:25:18,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:18,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:25:18,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:18,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:18,567 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 [2021-11-07 08:25:18,569 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 71 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:18,676 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 71 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 204 states and 344 transitions. Complement of second has 6 states. [2021-11-07 08:25:18,676 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 [2021-11-07 08:25:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2021-11-07 08:25:18,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 228 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-07 08:25:18,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:18,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 228 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-07 08:25:18,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:18,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 228 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-07 08:25:18,683 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:18,684 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 204 states and 344 transitions. [2021-11-07 08:25:18,692 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2021-11-07 08:25:18,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 204 states to 79 states and 120 transitions. [2021-11-07 08:25:18,698 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2021-11-07 08:25:18,699 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2021-11-07 08:25:18,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2021-11-07 08:25:18,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:25:18,700 INFO L681 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2021-11-07 08:25:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2021-11-07 08:25:18,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-11-07 08:25:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 1.588235294117647) internal successors, (108), 67 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2021-11-07 08:25:18,732 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2021-11-07 08:25:18,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:25:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:25:18,737 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:18,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:18,795 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-11-07 08:25:18,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:25:18,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2021-11-07 08:25:18,797 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-11-07 08:25:18,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2021-11-07 08:25:18,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-11-07 08:25:18,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-11-07 08:25:18,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2021-11-07 08:25:18,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:25:18,799 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-07 08:25:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2021-11-07 08:25:18,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-07 08:25:18,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:18,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2021-11-07 08:25:18,802 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-07 08:25:18,802 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-07 08:25:18,803 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-07 08:25:18,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2021-11-07 08:25:18,804 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-11-07 08:25:18,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:25:18,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:25:18,804 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:18,804 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:25:18,805 INFO L791 eck$LassoCheckResult]: Stem: 452#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); 426#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; 427#L29 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 455#L79 base2flt_#res := base2flt_~__retres4~0; 431#L80 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; 432#L29-1 assume !(0 == base2flt_~m % 4294967296); 433#L35-1 assume !(base2flt_~m % 4294967296 < 16777216); 434#L57-5 [2021-11-07 08:25:18,805 INFO L793 eck$LassoCheckResult]: Loop: 434#L57-5 assume !false; 436#L58-1 assume base2flt_~m % 4294967296 >= 33554432; 437#L59-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 434#L57-5 [2021-11-07 08:25:18,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2021-11-07 08:25:18,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:18,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839643820] [2021-11-07 08:25:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:18,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:18,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:18,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839643820] [2021-11-07 08:25:18,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839643820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:18,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:18,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:25:18,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91195777] [2021-11-07 08:25:18,869 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 08:25:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:18,870 INFO L85 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2021-11-07 08:25:18,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:18,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164561905] [2021-11-07 08:25:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:18,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:18,894 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:25:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:18,901 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:25:18,942 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:18,943 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:18,943 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:18,944 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:18,944 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:25:18,944 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:18,946 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:18,947 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:18,947 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2021-11-07 08:25:18,947 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:18,947 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:18,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:18,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:19,052 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:19,052 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:25:19,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:19,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:19,058 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:19,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:19,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:19,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-07 08:25:19,122 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:25:19,122 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: [] [2021-11-07 08:25:19,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:19,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:19,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:19,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:19,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:19,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:19,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-07 08:25:19,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:19,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:19,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:19,219 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:19,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:25:19,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:19,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-07 08:25:19,286 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:25:19,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:19,294 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:19,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:19,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:19,295 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:19,295 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:25:19,295 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:19,295 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:19,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:19,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration2_Loop [2021-11-07 08:25:19,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:19,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:19,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:19,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:19,381 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:19,381 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:25:19,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:19,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:19,382 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:19,393 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:19,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:19,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:19,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:19,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:19,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:19,405 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:19,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:19,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-07 08:25:19,421 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:25:19,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:19,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:19,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:19,462 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:19,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-07 08:25:19,469 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:19,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:19,479 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:19,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:19,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:19,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:19,480 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:19,481 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:19,501 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:25:19,503 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:25:19,504 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 08:25:19,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:19,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:19,506 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:19,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-07 08:25:19,509 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:25:19,509 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:25:19,509 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:25:19,509 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2021-11-07 08:25:19,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:19,532 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:25:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:19,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:25:19,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:19,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:19,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:19,638 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 [2021-11-07 08:25:19,638 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:19,651 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 85 transitions. Complement of second has 5 states. [2021-11-07 08:25:19,651 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 [2021-11-07 08:25:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2021-11-07 08:25:19,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-07 08:25:19,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:19,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-07 08:25:19,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:19,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-07 08:25:19,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:19,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2021-11-07 08:25:19,655 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2021-11-07 08:25:19,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2021-11-07 08:25:19,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-11-07 08:25:19,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-11-07 08:25:19,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2021-11-07 08:25:19,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:25:19,657 INFO L681 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2021-11-07 08:25:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2021-11-07 08:25:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2021-11-07 08:25:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2021-11-07 08:25:19,660 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2021-11-07 08:25:19,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:25:19,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:25:19,662 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:19,701 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-07 08:25:19,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:25:19,701 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2021-11-07 08:25:19,702 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-11-07 08:25:19,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2021-11-07 08:25:19,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-11-07 08:25:19,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-11-07 08:25:19,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-11-07 08:25:19,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:25:19,704 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-11-07 08:25:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-11-07 08:25:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-11-07 08:25:19,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.28125) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-11-07 08:25:19,707 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-11-07 08:25:19,707 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-11-07 08:25:19,707 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-07 08:25:19,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2021-11-07 08:25:19,708 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-11-07 08:25:19,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:25:19,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:25:19,708 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:19,709 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:25:19,709 INFO L791 eck$LassoCheckResult]: Stem: 670#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); 647#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; 648#L29 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 673#L79 base2flt_#res := base2flt_~__retres4~0; 652#L80 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; 653#L29-1 assume !(0 == base2flt_~m % 4294967296); 654#L35-1 assume base2flt_~m % 4294967296 < 16777216; 655#L47-3 [2021-11-07 08:25:19,709 INFO L793 eck$LassoCheckResult]: Loop: 655#L47-3 assume !false; 671#L38-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 664#L47-2 assume base2flt_~m % 4294967296 < 16777216; 655#L47-3 [2021-11-07 08:25:19,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:19,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2021-11-07 08:25:19,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:19,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304565278] [2021-11-07 08:25:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:19,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:19,730 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:25:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:19,769 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:25:19,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:19,769 INFO L85 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2021-11-07 08:25:19,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:19,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400494986] [2021-11-07 08:25:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:19,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:19,783 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:25:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:19,790 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:25:19,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2021-11-07 08:25:19,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:19,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751463012] [2021-11-07 08:25:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:19,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:19,825 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:25:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:19,855 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:25:19,896 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:19,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:19,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:19,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:19,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:25:19,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:19,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:19,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:19,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2021-11-07 08:25:19,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:19,897 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:19,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:19,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:19,974 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:19,975 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:25:19,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:19,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:19,976 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:19,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-07 08:25:19,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:19,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:20,016 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:25:20,016 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: [] [2021-11-07 08:25:20,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:20,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:20,020 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:20,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-07 08:25:20,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:20,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:20,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:20,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:20,054 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:20,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-07 08:25:20,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:25:20,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:20,090 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:25:20,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:20,096 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:20,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:20,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:20,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:20,096 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:25:20,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,096 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:20,096 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:20,096 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration3_Loop [2021-11-07 08:25:20,096 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:20,096 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:20,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:20,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:20,164 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:20,165 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:25:20,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:20,166 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:20,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-07 08:25:20,170 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:20,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:20,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:20,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:20,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:20,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:20,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:20,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:20,209 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:25:20,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:20,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:20,249 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:20,258 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:20,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-07 08:25:20,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:20,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:20,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:20,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:20,266 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:20,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:20,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:20,281 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:25:20,284 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:25:20,284 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 08:25:20,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:20,286 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:20,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-07 08:25:20,308 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:25:20,309 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:25:20,309 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:25:20,319 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2021-11-07 08:25:20,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:20,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:20,359 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:25:20,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:20,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:25:20,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:20,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:20,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:20,516 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 [2021-11-07 08:25:20,516 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:20,527 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 50 transitions. Complement of second has 5 states. [2021-11-07 08:25:20,528 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 [2021-11-07 08:25:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2021-11-07 08:25:20,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-07 08:25:20,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:20,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-07 08:25:20,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:20,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-07 08:25:20,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:20,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2021-11-07 08:25:20,531 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-11-07 08:25:20,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2021-11-07 08:25:20,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-11-07 08:25:20,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-11-07 08:25:20,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-11-07 08:25:20,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:25:20,532 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-11-07 08:25:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-11-07 08:25:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-11-07 08:25:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-11-07 08:25:20,535 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-11-07 08:25:20,535 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-11-07 08:25:20,535 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-07 08:25:20,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2021-11-07 08:25:20,536 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-11-07 08:25:20,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:25:20,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:25:20,537 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:20,537 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:25:20,537 INFO L791 eck$LassoCheckResult]: Stem: 794#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); 769#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; 770#L29 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 798#L79 base2flt_#res := base2flt_~__retres4~0; 774#L80 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; 775#L29-1 assume !(0 == base2flt_~m % 4294967296); 776#L35-1 assume base2flt_~m % 4294967296 < 16777216; 777#L47-3 assume !false; 795#L38-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 781#L79-1 base2flt_#res := base2flt_~__retres4~0; 788#L80-1 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; 792#L29-2 assume !(0 == base2flt_~m % 4294967296); 789#L35-2 assume !(base2flt_~m % 4294967296 < 16777216); 790#L57-8 [2021-11-07 08:25:20,537 INFO L793 eck$LassoCheckResult]: Loop: 790#L57-8 assume !false; 782#L58-2 assume base2flt_~m % 4294967296 >= 33554432; 784#L59-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 790#L57-8 [2021-11-07 08:25:20,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:20,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2021-11-07 08:25:20,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:20,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871617135] [2021-11-07 08:25:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:20,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:20,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:20,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871617135] [2021-11-07 08:25:20,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871617135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:20,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:20,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:25:20,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100282025] [2021-11-07 08:25:20,599 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 08:25:20,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:20,599 INFO L85 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2021-11-07 08:25:20,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:20,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319923748] [2021-11-07 08:25:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:20,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:20,610 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:25:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:20,618 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:25:20,649 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:20,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:20,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:20,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:20,649 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:25:20,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:20,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:20,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2021-11-07 08:25:20,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:20,650 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:20,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:20,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:20,728 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:20,728 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:25:20,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:20,733 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:20,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:20,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:20,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-07 08:25:20,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:20,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:20,801 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:20,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:25:20,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:20,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-07 08:25:20,870 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:25:20,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:20,874 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:20,874 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:20,874 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:20,874 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:20,874 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:25:20,874 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,874 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:20,874 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:20,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration4_Loop [2021-11-07 08:25:20,874 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:20,874 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:20,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:20,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:20,949 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:20,949 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:25:20,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:20,953 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:20,961 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:20,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:20,971 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:20,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:20,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:20,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:20,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:20,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:20,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-07 08:25:20,987 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:25:20,989 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:25:20,990 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 08:25:20,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:20,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:20,993 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:20,997 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:25:20,997 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:25:20,998 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:25:20,998 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2021-11-07 08:25:21,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-07 08:25:21,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:21,029 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:25:21,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:21,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:25:21,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:21,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:21,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:21,144 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 [2021-11-07 08:25:21,145 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:21,165 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 65 transitions. Complement of second has 5 states. [2021-11-07 08:25:21,166 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 [2021-11-07 08:25:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2021-11-07 08:25:21,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2021-11-07 08:25:21,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:21,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2021-11-07 08:25:21,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:21,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2021-11-07 08:25:21,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:21,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2021-11-07 08:25:21,170 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-11-07 08:25:21,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2021-11-07 08:25:21,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-11-07 08:25:21,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-11-07 08:25:21,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2021-11-07 08:25:21,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:25:21,175 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-11-07 08:25:21,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2021-11-07 08:25:21,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2021-11-07 08:25:21,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2021-11-07 08:25:21,184 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2021-11-07 08:25:21,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:25:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:25:21,185 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:21,203 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-11-07 08:25:21,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:25:21,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2021-11-07 08:25:21,205 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-11-07 08:25:21,206 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2021-11-07 08:25:21,206 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-11-07 08:25:21,206 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-11-07 08:25:21,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2021-11-07 08:25:21,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:25:21,206 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-11-07 08:25:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2021-11-07 08:25:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-11-07 08:25:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.263157894736842) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2021-11-07 08:25:21,217 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-11-07 08:25:21,217 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-11-07 08:25:21,217 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-07 08:25:21,217 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2021-11-07 08:25:21,218 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-11-07 08:25:21,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:25:21,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:25:21,218 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:21,218 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:25:21,219 INFO L791 eck$LassoCheckResult]: Stem: 1030#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); 1001#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; 1002#L29 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1032#L79 base2flt_#res := base2flt_~__retres4~0; 1006#L80 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; 1007#L29-1 assume !(0 == base2flt_~m % 4294967296); 1008#L35-1 assume base2flt_~m % 4294967296 < 16777216; 1009#L47-3 assume !false; 1029#L38-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1019#L47-2 assume !(base2flt_~m % 4294967296 < 16777216); 1012#L73-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1013#L79-1 base2flt_#res := base2flt_~__retres4~0; 1022#L80-1 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; 1026#L29-2 assume !(0 == base2flt_~m % 4294967296); 1023#L35-2 assume base2flt_~m % 4294967296 < 16777216; 1025#L47-5 [2021-11-07 08:25:21,219 INFO L793 eck$LassoCheckResult]: Loop: 1025#L47-5 assume !false; 1027#L38-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1034#L47-4 assume base2flt_~m % 4294967296 < 16777216; 1025#L47-5 [2021-11-07 08:25:21,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:21,219 INFO L85 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2021-11-07 08:25:21,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:21,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595805409] [2021-11-07 08:25:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:21,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:21,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:21,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595805409] [2021-11-07 08:25:21,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595805409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:25:21,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:25:21,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:25:21,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884931909] [2021-11-07 08:25:21,293 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 08:25:21,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:21,294 INFO L85 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2021-11-07 08:25:21,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:21,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455412544] [2021-11-07 08:25:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:21,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:21,300 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:25:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:21,311 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:25:21,336 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:21,336 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:21,337 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:21,337 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:21,337 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:25:21,337 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:21,337 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:21,337 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:21,337 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2021-11-07 08:25:21,338 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:21,338 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:21,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:21,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:21,395 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:21,395 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:25:21,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:21,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:21,396 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:21,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:21,406 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:21,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-07 08:25:21,465 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:25:21,465 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: [] [2021-11-07 08:25:21,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:21,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:21,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:21,473 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:21,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:21,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:21,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-07 08:25:21,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:21,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:21,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:21,534 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:21,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:25:21,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:21,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-07 08:25:21,597 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:25:21,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:21,603 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:21,603 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:21,603 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:21,603 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:21,603 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:25:21,603 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:21,603 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:21,604 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:21,604 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration5_Loop [2021-11-07 08:25:21,604 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:21,604 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:21,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:21,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:21,654 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:21,655 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:25:21,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:21,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:21,657 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:21,669 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:21,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-07 08:25:21,678 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:21,678 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:21,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:21,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:21,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:21,679 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:21,680 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:21,692 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:25:21,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:21,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:21,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:21,727 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:21,734 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:21,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:21,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:21,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:21,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:21,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:21,751 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:21,751 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:21,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-07 08:25:21,765 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:25:21,772 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:25:21,772 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 08:25:21,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:21,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:21,774 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:21,780 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:25:21,780 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:25:21,780 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:25:21,780 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2021-11-07 08:25:21,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-07 08:25:21,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-11-07 08:25:21,801 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:25:21,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:21,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:25:21,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:21,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:21,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:21,942 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 [2021-11-07 08:25:21,943 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:21,960 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 69 transitions. Complement of second has 5 states. [2021-11-07 08:25:21,960 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 [2021-11-07 08:25:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2021-11-07 08:25:21,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2021-11-07 08:25:21,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:21,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2021-11-07 08:25:21,963 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:21,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2021-11-07 08:25:21,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:21,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2021-11-07 08:25:21,969 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-11-07 08:25:21,970 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2021-11-07 08:25:21,970 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-11-07 08:25:21,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-11-07 08:25:21,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2021-11-07 08:25:21,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:25:21,971 INFO L681 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2021-11-07 08:25:21,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2021-11-07 08:25:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2021-11-07 08:25:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-11-07 08:25:21,981 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-11-07 08:25:21,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:21,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:25:21,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:25:21,982 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:22,024 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-11-07 08:25:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:25:22,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2021-11-07 08:25:22,026 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-07 08:25:22,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2021-11-07 08:25:22,027 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-11-07 08:25:22,027 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-11-07 08:25:22,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2021-11-07 08:25:22,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:25:22,028 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-11-07 08:25:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2021-11-07 08:25:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-11-07 08:25:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2021-11-07 08:25:22,038 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-07 08:25:22,038 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-07 08:25:22,038 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-07 08:25:22,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2021-11-07 08:25:22,038 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-07 08:25:22,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:25:22,039 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:25:22,039 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:22,039 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:25:22,040 INFO L791 eck$LassoCheckResult]: Stem: 1290#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); 1260#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; 1261#L29 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1294#L79 base2flt_#res := base2flt_~__retres4~0; 1265#L80 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; 1266#L29-1 assume !(0 == base2flt_~m % 4294967296); 1267#L35-1 assume base2flt_~m % 4294967296 < 16777216; 1268#L47-3 assume !false; 1292#L38-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1278#L47-2 assume base2flt_~m % 4294967296 < 16777216; 1279#L47-3 assume !false; 1291#L38-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1272#L79-1 base2flt_#res := base2flt_~__retres4~0; 1281#L80-1 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; 1285#L29-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1256#L79-2 base2flt_#res := base2flt_~__retres4~0; 1257#L80-2 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; 1293#L29-3 assume !(0 == base2flt_~m % 4294967296); 1262#L35-3 assume !(base2flt_~m % 4294967296 < 16777216); 1263#L57-11 [2021-11-07 08:25:22,048 INFO L793 eck$LassoCheckResult]: Loop: 1263#L57-11 assume !false; 1269#L58-3 assume base2flt_~m % 4294967296 >= 33554432; 1270#L59-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1263#L57-11 [2021-11-07 08:25:22,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:22,048 INFO L85 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2021-11-07 08:25:22,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:22,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643140240] [2021-11-07 08:25:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:22,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:22,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:22,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643140240] [2021-11-07 08:25:22,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643140240] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:22,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968147467] [2021-11-07 08:25:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:22,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:22,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:22,109 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:22,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 08:25:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:22,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:22,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:22,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968147467] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:22,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:25:22,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-07 08:25:22,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69551893] [2021-11-07 08:25:22,229 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 08:25:22,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2021-11-07 08:25:22,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:22,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902753399] [2021-11-07 08:25:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:22,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:22,236 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:25:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:22,240 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:25:22,269 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:22,270 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:22,270 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:22,270 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:22,270 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:25:22,270 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:22,270 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:22,270 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:22,270 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2021-11-07 08:25:22,271 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:22,271 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:22,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:22,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:22,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:22,383 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:22,383 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:25:22,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:22,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:22,384 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:22,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:22,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:22,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:22,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-07 08:25:22,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:22,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:22,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:22,472 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:22,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-07 08:25:22,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:25:22,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:22,506 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:25:22,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:22,508 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:22,508 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:22,509 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:22,509 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:22,509 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:25:22,509 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:22,509 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:22,509 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:22,509 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration6_Loop [2021-11-07 08:25:22,509 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:22,509 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:22,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:22,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:22,608 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:22,608 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:25:22,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:22,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:22,612 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:22,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-07 08:25:22,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:22,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:22,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:22,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:22,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:22,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:22,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:22,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:22,626 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:25:22,628 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:25:22,628 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 08:25:22,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:22,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:22,629 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:22,635 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:25:22,635 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:25:22,636 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:25:22,636 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2021-11-07 08:25:22,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-07 08:25:22,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:22,685 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:25:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:22,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:25:22,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:22,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:22,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:22,786 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 [2021-11-07 08:25:22,787 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:22,793 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 59 transitions. Complement of second has 4 states. [2021-11-07 08:25:22,793 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 [2021-11-07 08:25:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2021-11-07 08:25:22,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2021-11-07 08:25:22,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:22,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2021-11-07 08:25:22,794 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:22,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2021-11-07 08:25:22,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:22,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2021-11-07 08:25:22,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:25:22,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2021-11-07 08:25:22,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-11-07 08:25:22,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-11-07 08:25:22,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2021-11-07 08:25:22,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:25:22,796 INFO L681 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-11-07 08:25:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2021-11-07 08:25:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-07 08:25:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.275) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-11-07 08:25:22,798 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-11-07 08:25:22,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:22,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:25:22,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:25:22,799 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:22,826 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-11-07 08:25:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:25:22,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2021-11-07 08:25:22,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:25:22,828 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 44 states and 54 transitions. [2021-11-07 08:25:22,828 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-11-07 08:25:22,828 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-11-07 08:25:22,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 54 transitions. [2021-11-07 08:25:22,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:25:22,828 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 54 transitions. [2021-11-07 08:25:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 54 transitions. [2021-11-07 08:25:22,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-11-07 08:25:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.25) internal successors, (50), 39 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:22,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2021-11-07 08:25:22,830 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-11-07 08:25:22,830 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-11-07 08:25:22,830 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-07 08:25:22,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 50 transitions. [2021-11-07 08:25:22,831 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-07 08:25:22,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:25:22,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:25:22,832 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:25:22,832 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:25:22,832 INFO L791 eck$LassoCheckResult]: Stem: 1603#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); 1575#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; 1576#L29 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1605#L79 base2flt_#res := base2flt_~__retres4~0; 1579#L80 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; 1580#L29-1 assume !(0 == base2flt_~m % 4294967296); 1581#L35-1 assume base2flt_~m % 4294967296 < 16777216; 1582#L47-3 assume !false; 1602#L38-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1590#L47-2 assume base2flt_~m % 4294967296 < 16777216; 1591#L47-3 assume !false; 1608#L38-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1610#L47-2 assume !(base2flt_~m % 4294967296 < 16777216); 1583#L73-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1584#L79-1 base2flt_#res := base2flt_~__retres4~0; 1592#L80-1 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; 1596#L29-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1571#L79-2 base2flt_#res := base2flt_~__retres4~0; 1572#L80-2 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; 1604#L29-3 assume !(0 == base2flt_~m % 4294967296); 1577#L35-3 assume base2flt_~m % 4294967296 < 16777216; 1578#L47-7 [2021-11-07 08:25:22,833 INFO L793 eck$LassoCheckResult]: Loop: 1578#L47-7 assume !false; 1573#L38-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1574#L47-6 assume base2flt_~m % 4294967296 < 16777216; 1578#L47-7 [2021-11-07 08:25:22,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2021-11-07 08:25:22,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:22,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264389916] [2021-11-07 08:25:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:22,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:22,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:25:22,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264389916] [2021-11-07 08:25:22,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264389916] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:22,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786134078] [2021-11-07 08:25:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:22,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:25:22,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:22,913 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:25:22,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-07 08:25:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:22,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 08:25:22,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:23,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786134078] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:25:23,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:25:23,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-07 08:25:23,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384654494] [2021-11-07 08:25:23,149 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 08:25:23,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:23,150 INFO L85 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2021-11-07 08:25:23,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:25:23,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740794511] [2021-11-07 08:25:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:25:23,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:25:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:23,166 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:25:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:25:23,169 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:25:23,191 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:23,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:23,191 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:23,191 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:23,191 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:25:23,191 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:23,191 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:23,192 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:23,192 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2021-11-07 08:25:23,192 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:23,192 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:23,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:23,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:23,242 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:23,242 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:25:23,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:23,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:23,243 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:23,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:23,245 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:23,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-07 08:25:23,289 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:25:23,290 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: [] [2021-11-07 08:25:23,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:23,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:23,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:23,293 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:23,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:25:23,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:23,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-07 08:25:23,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-11-07 08:25:23,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:23,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:23,325 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:23,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-07 08:25:23,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:25:23,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:25:23,366 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:25:23,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:23,372 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:25:23,372 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:25:23,372 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:25:23,372 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:25:23,372 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:25:23,372 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:23,372 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:25:23,372 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:25:23,372 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_2a.c.cil.c_Iteration7_Loop [2021-11-07 08:25:23,372 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:25:23,372 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:25:23,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:23,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:25:23,421 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:25:23,421 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:25:23,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:23,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:23,422 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:23,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:23,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-07 08:25:23,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:23,430 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:23,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:23,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:23,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:23,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:23,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:23,449 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:25:23,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:23,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:23,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:23,469 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:23,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-07 08:25:23,473 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-07 08:25:23,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:25:23,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:25:23,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:25:23,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:25:23,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:25:23,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:25:23,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:25:23,483 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:25:23,485 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:25:23,485 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 08:25:23,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:25:23,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:25:23,486 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:25:23,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-07 08:25:23,487 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:25:23,487 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:25:23,487 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:25:23,487 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2021-11-07 08:25:23,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:23,510 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:25:23,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:25:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:23,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:25:23,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:25:23,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:25:23,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:25:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:25:23,650 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 [2021-11-07 08:25:23,650 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:23,660 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 50 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 44 states and 54 transitions. Complement of second has 4 states. [2021-11-07 08:25:23,660 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 [2021-11-07 08:25:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2021-11-07 08:25:23,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2021-11-07 08:25:23,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:23,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2021-11-07 08:25:23,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:23,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2021-11-07 08:25:23,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:25:23,662 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2021-11-07 08:25:23,663 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:25:23,663 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2021-11-07 08:25:23,663 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-07 08:25:23,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-07 08:25:23,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-07 08:25:23,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:25:23,664 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:25:23,664 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:25:23,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:25:23,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:25:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:25:23,665 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:25:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:25:23,665 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-07 08:25:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:25:23,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-07 08:25:23,666 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:25:23,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 08:25:23,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-07 08:25:23,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-07 08:25:23,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-07 08:25:23,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:25:23,666 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:25:23,666 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:25:23,667 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:25:23,667 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-07 08:25:23,667 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-07 08:25:23,667 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 08:25:23,667 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-07 08:25:23,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.11 08:25:23 BoogieIcfgContainer [2021-11-07 08:25:23,674 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-07 08:25:23,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:25:23,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:25:23,675 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:25:23,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:25:17" (3/4) ... [2021-11-07 08:25:23,678 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 08:25:23,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:25:23,680 INFO L168 Benchmark]: Toolchain (without parser) took 7508.05 ms. Allocated memory was 119.5 MB in the beginning and 167.8 MB in the end (delta: 48.2 MB). Free memory was 76.3 MB in the beginning and 67.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:25:23,680 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 92.8 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:25:23,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.74 ms. Allocated memory is still 119.5 MB. Free memory was 76.1 MB in the beginning and 91.2 MB in the end (delta: -15.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:25:23,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 119.5 MB. Free memory was 91.2 MB in the beginning and 89.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:25:23,682 INFO L168 Benchmark]: Boogie Preprocessor took 34.06 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 87.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:25:23,682 INFO L168 Benchmark]: RCFGBuilder took 489.99 ms. Allocated memory is still 119.5 MB. Free memory was 87.4 MB in the beginning and 71.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 08:25:23,683 INFO L168 Benchmark]: BuchiAutomizer took 6600.10 ms. Allocated memory was 119.5 MB in the beginning and 167.8 MB in the end (delta: 48.2 MB). Free memory was 71.2 MB in the beginning and 67.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:25:23,683 INFO L168 Benchmark]: Witness Printer took 3.94 ms. Allocated memory is still 167.8 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:25:23,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 92.8 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.74 ms. Allocated memory is still 119.5 MB. Free memory was 76.1 MB in the beginning and 91.2 MB in the end (delta: -15.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.71 ms. Allocated memory is still 119.5 MB. Free memory was 91.2 MB in the beginning and 89.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.06 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 87.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 489.99 ms. Allocated memory is still 119.5 MB. Free memory was 87.4 MB in the beginning and 71.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6600.10 ms. Allocated memory was 119.5 MB in the beginning and 167.8 MB in the end (delta: 48.2 MB). Free memory was 71.2 MB in the beginning and 67.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.94 ms. Allocated memory is still 167.8 MB. Free memory is still 67.6 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 253 + -2 * e and consists of 4 locations. One deterministic module has affine ranking function 253 + -2 * e 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 253 + -2 * e 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 253 + -2 * e 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 6.5s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.9s. Construction of modules took 0.1s. Büchi inclusion checks took 1.1s. 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, 344 SDslu, 161 SDs, 0 SdLazy, 162 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-07 08:25:23,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:23,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-11-07 08:25:24,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-11-07 08:25:24,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-07 08:25:24,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86de6808-cd76-40ec-aec0-074e2909c79c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE