./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3e65a9c88991657ab2059827ecd5dfb9aad85be .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:17:55,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:17:55,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:17:55,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:17:55,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:17:55,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:17:55,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:17:55,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:17:55,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:17:55,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:17:55,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:17:55,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:17:55,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:17:55,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:17:55,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:17:55,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:17:55,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:17:55,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:17:55,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:17:55,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:17:55,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:17:55,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:17:55,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:17:55,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:17:55,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:17:55,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:17:55,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:17:55,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:17:55,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:17:55,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:17:55,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:17:55,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:17:55,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:17:55,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:17:55,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:17:55,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:17:55,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:17:55,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:17:55,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:17:55,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:17:55,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:17:55,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:17:55,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:17:55,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:17:55,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:17:55,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:17:55,813 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:17:55,813 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:17:55,813 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:17:55,814 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:17:55,814 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:17:55,814 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:17:55,815 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:17:55,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:17:55,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:17:55,816 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:17:55,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:17:55,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:17:55,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:17:55,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:17:55,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:17:55,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:17:55,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:17:55,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:17:55,818 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:17:55,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:17:55,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:17:55,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:17:55,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:17:55,820 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:17:55,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:17:55,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:17:55,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:17:55,822 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:17:55,823 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:17:55,824 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3e65a9c88991657ab2059827ecd5dfb9aad85be [2020-11-28 03:17:56,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:17:56,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:17:56,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:17:56,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:17:56,126 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:17:56,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2020-11-28 03:17:56,200 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/data/426b7c24c/a9097e47322d4aa7b7b29d78dc198eef/FLAGbb5c774fd [2020-11-28 03:17:56,626 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:17:56,627 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2020-11-28 03:17:56,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/data/426b7c24c/a9097e47322d4aa7b7b29d78dc198eef/FLAGbb5c774fd [2020-11-28 03:17:57,010 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/data/426b7c24c/a9097e47322d4aa7b7b29d78dc198eef [2020-11-28 03:17:57,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:17:57,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:17:57,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:57,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:17:57,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:17:57,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9e89dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57, skipping insertion in model container [2020-11-28 03:17:57,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:17:57,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:17:57,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:57,329 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:17:57,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:57,422 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:17:57,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57 WrapperNode [2020-11-28 03:17:57,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:57,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:57,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:17:57,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:17:57,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:57,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:17:57,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:17:57,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:17:57,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:17:57,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:17:57,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:17:57,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:17:57,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:17:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:17:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:17:57,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:17:58,230 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:58,231 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-11-28 03:17:58,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:58 BoogieIcfgContainer [2020-11-28 03:17:58,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:58,234 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:17:58,234 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:17:58,237 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:17:58,238 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:17:58,238 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:17:57" (1/3) ... [2020-11-28 03:17:58,239 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c860191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:58, skipping insertion in model container [2020-11-28 03:17:58,239 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:17:58,239 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (2/3) ... [2020-11-28 03:17:58,240 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c860191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:58, skipping insertion in model container [2020-11-28 03:17:58,240 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:17:58,240 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:58" (3/3) ... [2020-11-28 03:17:58,241 INFO L373 chiAutomizerObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2020-11-28 03:17:58,279 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:17:58,280 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:17:58,280 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:17:58,280 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:58,280 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:58,280 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:17:58,280 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:58,280 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:17:58,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states. [2020-11-28 03:17:58,313 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-28 03:17:58,313 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:17:58,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:17:58,318 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:17:58,318 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:17:58,318 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:17:58,318 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states. [2020-11-28 03:17:58,324 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2020-11-28 03:17:58,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:17:58,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:17:58,325 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:17:58,325 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:17:58,330 INFO L794 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 15#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 49#L22true assume !(0 == base2flt_~m % 4294967296); 82#L28true assume !(base2flt_~m % 4294967296 < 16777216); 75#L50-2true [2020-11-28 03:17:58,330 INFO L796 eck$LassoCheckResult]: Loop: 75#L50-2true assume !false; 11#L51true assume base2flt_~m % 4294967296 >= 33554432; 42#L52true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 75#L50-2true [2020-11-28 03:17:58,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:58,336 INFO L82 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2020-11-28 03:17:58,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:58,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134393012] [2020-11-28 03:17:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:58,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134393012] [2020-11-28 03:17:58,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:58,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:17:58,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413279446] [2020-11-28 03:17:58,550 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:17:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:58,556 INFO L82 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2020-11-28 03:17:58,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:58,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673048251] [2020-11-28 03:17:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:58,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:58,582 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:58,598 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:58,648 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:17:58,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:17:58,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:17:58,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:17:58,649 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:17:58,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:58,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:17:58,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:17:58,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration1_Loop [2020-11-28 03:17:58,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:17:58,651 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:17:58,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:58,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:58,787 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:17:58,788 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:58,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:17:58,804 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:17:58,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:17:58,851 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:58,891 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:17:58,897 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:17:58,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:17:58,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:17:58,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:17:58,898 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:17:58,898 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:58,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:17:58,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:17:58,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration1_Loop [2020-11-28 03:17:58,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:17:58,898 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:17:58,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:58,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:59,017 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:17:59,021 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:17:59,033 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:17:59,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:17:59,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:17:59,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:17:59,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:17:59,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:17:59,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:17:59,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:59,043 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:17:59,050 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:17:59,050 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:17:59,084 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:17:59,084 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:17:59,085 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:17:59,085 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:59,122 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:17:59,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:59,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:17:59,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:59,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:17:59,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:59,230 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:17:59,231 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states. Second operand 3 states. [2020-11-28 03:17:59,339 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states.. Second operand 3 states. Result 272 states and 430 transitions. Complement of second has 6 states. [2020-11-28 03:17:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:17:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:17:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2020-11-28 03:17:59,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 281 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:17:59,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:59,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 281 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:17:59,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:59,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 281 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 03:17:59,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:17:59,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 272 states and 430 transitions. [2020-11-28 03:17:59,369 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2020-11-28 03:17:59,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 272 states to 57 states and 82 transitions. [2020-11-28 03:17:59,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2020-11-28 03:17:59,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2020-11-28 03:17:59,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2020-11-28 03:17:59,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:17:59,383 INFO L691 BuchiCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-11-28 03:17:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2020-11-28 03:17:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2020-11-28 03:17:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 03:17:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 70 transitions. [2020-11-28 03:17:59,423 INFO L714 BuchiCegarLoop]: Abstraction has 46 states and 70 transitions. [2020-11-28 03:17:59,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:59,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:17:59,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:17:59,429 INFO L87 Difference]: Start difference. First operand 46 states and 70 transitions. Second operand 3 states. [2020-11-28 03:17:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:59,558 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2020-11-28 03:17:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:17:59,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-11-28 03:17:59,560 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 03:17:59,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 31 transitions. [2020-11-28 03:17:59,561 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-28 03:17:59,561 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-28 03:17:59,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2020-11-28 03:17:59,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:17:59,562 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-28 03:17:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2020-11-28 03:17:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-28 03:17:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:17:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-11-28 03:17:59,564 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-28 03:17:59,564 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-11-28 03:17:59,564 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:17:59,564 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-11-28 03:17:59,565 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 03:17:59,565 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:17:59,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:17:59,566 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:59,566 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:17:59,566 INFO L794 eck$LassoCheckResult]: Stem: 503#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 501#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 502#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 497#L72 base2flt_#res := base2flt_~__retres4~0; 498#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 500#L22-1 assume !(0 == base2flt_~m % 4294967296); 485#L28-1 assume !(base2flt_~m % 4294967296 < 16777216); 486#L50-5 [2020-11-28 03:17:59,567 INFO L796 eck$LassoCheckResult]: Loop: 486#L50-5 assume !false; 493#L51-1 assume base2flt_~m % 4294967296 >= 33554432; 494#L52-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 486#L50-5 [2020-11-28 03:17:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:59,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2020-11-28 03:17:59,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:59,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188915854] [2020-11-28 03:17:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:59,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:59,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:59,646 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:59,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:59,646 INFO L82 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2020-11-28 03:17:59,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:59,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322051372] [2020-11-28 03:17:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:59,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:59,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:59,685 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:59,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1013979123, now seen corresponding path program 1 times [2020-11-28 03:17:59,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:59,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361787490] [2020-11-28 03:17:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:59,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:59,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:59,760 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:59,791 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:17:59,791 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:17:59,791 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:17:59,791 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:17:59,792 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:17:59,792 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:59,792 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:17:59,792 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:17:59,792 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration2_Loop [2020-11-28 03:17:59,792 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:17:59,792 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:17:59,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:59,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:17:59,885 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:17:59,885 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:17:59,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:17:59,888 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:59,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:17:59,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:17:59,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:17:59,940 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:59,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:17:59,985 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:18:00,024 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:18:00,025 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:00,026 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:00,026 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:00,026 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:00,026 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:18:00,026 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,026 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:00,026 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:00,027 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration2_Loop [2020-11-28 03:18:00,027 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:00,027 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:00,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:00,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:00,151 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:00,151 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:00,158 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:18:00,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:00,159 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:18:00,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:00,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:00,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:00,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:18:00,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,167 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:00,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:18:00,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:00,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:18:00,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:00,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:00,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:00,209 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:18:00,209 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:18:00,216 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:18:00,216 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:00,225 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:18:00,225 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:18:00,225 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:18:00,225 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,260 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:18:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:00,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:18:00,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:00,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:18:00,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:00,321 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:18:00,321 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-11-28 03:18:00,341 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 31 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 41 states and 51 transitions. Complement of second has 5 states. [2020-11-28 03:18:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:18:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:18:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2020-11-28 03:18:00,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:18:00,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:00,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:18:00,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:00,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 03:18:00,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:00,344 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 51 transitions. [2020-11-28 03:18:00,345 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2020-11-28 03:18:00,346 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 38 states and 47 transitions. [2020-11-28 03:18:00,346 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-11-28 03:18:00,346 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2020-11-28 03:18:00,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 47 transitions. [2020-11-28 03:18:00,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:18:00,347 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2020-11-28 03:18:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 47 transitions. [2020-11-28 03:18:00,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-28 03:18:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:18:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 03:18:00,349 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:18:00,349 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:18:00,349 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:18:00,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-28 03:18:00,350 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-28 03:18:00,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:18:00,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:18:00,356 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:00,356 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:18:00,356 INFO L794 eck$LassoCheckResult]: Stem: 621#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 619#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 620#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 615#L72 base2flt_#res := base2flt_~__retres4~0; 616#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 618#L22-1 assume !(0 == base2flt_~m % 4294967296); 600#L28-1 assume base2flt_~m % 4294967296 < 16777216; 598#L40-3 [2020-11-28 03:18:00,356 INFO L796 eck$LassoCheckResult]: Loop: 598#L40-3 assume !false; 599#L31-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 602#L40-2 assume base2flt_~m % 4294967296 < 16777216; 598#L40-3 [2020-11-28 03:18:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:00,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2020-11-28 03:18:00,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:00,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464659849] [2020-11-28 03:18:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:00,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:00,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:00,402 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:00,403 INFO L82 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2020-11-28 03:18:00,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:00,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063110512] [2020-11-28 03:18:00,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:00,408 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:00,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:00,412 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:00,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2020-11-28 03:18:00,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:00,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726329114] [2020-11-28 03:18:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:00,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:00,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:00,459 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:00,507 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:00,508 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:00,508 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:00,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:00,508 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:18:00,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:00,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:00,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration3_Loop [2020-11-28 03:18:00,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:00,509 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:00,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:00,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:00,588 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:00,588 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:00,591 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:18:00,592 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,627 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:18:00,628 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:00,636 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:18:00,636 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:00,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:18:00,681 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,723 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:18:00,725 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:00,725 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:00,725 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:00,725 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:00,725 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:18:00,726 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,726 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:00,726 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:00,726 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration3_Loop [2020-11-28 03:18:00,726 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:00,726 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:00,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:00,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:00,830 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:00,830 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:00,841 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:18:00,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:00,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:18:00,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:00,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:00,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:00,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:18:00,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,848 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:00,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:18:00,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:00,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:18:00,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:00,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:00,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:00,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:18:00,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,901 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:18:00,904 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:18:00,904 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:00,912 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:18:00,912 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:18:00,912 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:18:00,913 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:00,946 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:18:00,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:01,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:18:01,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:01,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:18:01,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:01,088 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:18:01,088 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-28 03:18:01,107 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 45 states and 56 transitions. Complement of second has 5 states. [2020-11-28 03:18:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:18:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:18:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2020-11-28 03:18:01,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:18:01,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:01,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:18:01,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:01,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 34 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 03:18:01,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:01,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2020-11-28 03:18:01,116 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2020-11-28 03:18:01,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2020-11-28 03:18:01,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-11-28 03:18:01,117 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-28 03:18:01,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2020-11-28 03:18:01,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:18:01,117 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-11-28 03:18:01,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2020-11-28 03:18:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-11-28 03:18:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:18:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-11-28 03:18:01,124 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-28 03:18:01,124 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-11-28 03:18:01,125 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:18:01,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 39 transitions. [2020-11-28 03:18:01,125 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:18:01,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:18:01,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:18:01,128 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:01,128 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:18:01,129 INFO L794 eck$LassoCheckResult]: Stem: 747#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 745#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 746#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 740#L72 base2flt_#res := base2flt_~__retres4~0; 741#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 744#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 732#L72-1 base2flt_#res := base2flt_~__retres4~0; 733#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 742#L22-2 assume !(0 == base2flt_~m % 4294967296); 718#L28-2 assume !(base2flt_~m % 4294967296 < 16777216); 719#L50-8 [2020-11-28 03:18:01,129 INFO L796 eck$LassoCheckResult]: Loop: 719#L50-8 assume !false; 730#L51-2 assume base2flt_~m % 4294967296 >= 33554432; 731#L52-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 719#L50-8 [2020-11-28 03:18:01,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:01,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956351, now seen corresponding path program 1 times [2020-11-28 03:18:01,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:01,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402451683] [2020-11-28 03:18:01,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,177 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,181 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:01,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:01,185 INFO L82 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2020-11-28 03:18:01,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:01,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366522549] [2020-11-28 03:18:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,207 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:01,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:01,208 INFO L82 PathProgramCache]: Analyzing trace with hash 542600884, now seen corresponding path program 1 times [2020-11-28 03:18:01,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:01,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629606221] [2020-11-28 03:18:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,275 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:01,315 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:01,315 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:01,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:01,315 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:01,315 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:18:01,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:01,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:01,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:01,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration4_Loop [2020-11-28 03:18:01,316 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:01,316 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:01,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:01,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:01,519 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:01,519 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:01,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:18:01,530 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:01,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:18:01,580 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:01,620 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:18:01,622 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:01,623 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:01,623 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:01,623 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:01,623 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:18:01,623 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:01,623 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:01,623 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:01,623 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration4_Loop [2020-11-28 03:18:01,623 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:01,624 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:01,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:01,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:01,757 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:01,757 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:01,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:18:01,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:01,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:18:01,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:01,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:01,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:01,780 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:18:01,780 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:01,783 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:18:01,788 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:18:01,788 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:01,797 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:18:01,798 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:18:01,798 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:18:01,799 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2020-11-28 03:18:01,819 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:18:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:01,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:18:01,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:01,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:18:01,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:01,889 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:18:01,889 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 03:18:01,901 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 39 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 33 states and 43 transitions. Complement of second has 4 states. [2020-11-28 03:18:01,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:18:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:18:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2020-11-28 03:18:01,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:18:01,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:01,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-28 03:18:01,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:01,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 03:18:01,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:01,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2020-11-28 03:18:01,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:18:01,905 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2020-11-28 03:18:01,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2020-11-28 03:18:01,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2020-11-28 03:18:01,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2020-11-28 03:18:01,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:18:01,905 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:18:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2020-11-28 03:18:01,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:18:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:18:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 03:18:01,911 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:18:01,911 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 03:18:01,912 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:18:01,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 35 transitions. [2020-11-28 03:18:01,912 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:18:01,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:18:01,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:18:01,913 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:01,913 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:18:01,913 INFO L794 eck$LassoCheckResult]: Stem: 865#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 863#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~ret11, main_#t~ret12, main_#t~ret13, main_#t~ret14, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet7;havoc main_#t~nondet7;main_~ea~2 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~b~0;main_~mb~2 := main_#t~nondet9;havoc main_#t~nondet9;main_~eb~2 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~r_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 864#L22 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 858#L72 base2flt_#res := base2flt_~__retres4~0; 859#L73 main_#t~ret11 := base2flt_#res;main_~zero~0 := main_#t~ret11;havoc main_#t~ret11;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 862#L22-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 850#L72-1 base2flt_#res := base2flt_~__retres4~0; 851#L73-1 main_#t~ret12 := base2flt_#res;main_~a~0 := main_#t~ret12;havoc main_#t~ret12;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 860#L22-2 assume !(0 == base2flt_~m % 4294967296); 839#L28-2 assume base2flt_~m % 4294967296 < 16777216; 840#L40-5 [2020-11-28 03:18:01,913 INFO L796 eck$LassoCheckResult]: Loop: 840#L40-5 assume !false; 856#L31-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 857#L40-4 assume base2flt_~m % 4294967296 < 16777216; 840#L40-5 [2020-11-28 03:18:01,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:01,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1012956325, now seen corresponding path program 1 times [2020-11-28 03:18:01,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:01,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829783272] [2020-11-28 03:18:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,937 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:01,971 INFO L82 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2020-11-28 03:18:01,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:01,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6993345] [2020-11-28 03:18:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,975 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:01,978 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:01,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:01,979 INFO L82 PathProgramCache]: Analyzing trace with hash 541800559, now seen corresponding path program 1 times [2020-11-28 03:18:01,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:01,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263853084] [2020-11-28 03:18:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:01,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:02,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:02,006 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:02,042 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:02,042 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:02,042 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:02,042 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:02,042 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:18:02,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:02,043 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:02,043 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:02,043 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration5_Loop [2020-11-28 03:18:02,043 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:02,043 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:02,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:02,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:02,131 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:02,131 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:02,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:18:02,142 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:02,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:18:02,182 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:02,222 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:18:02,224 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:02,224 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:02,224 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:02,224 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:02,224 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:18:02,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:02,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:02,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:02,225 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-2a.c.cil.c_Iteration5_Loop [2020-11-28 03:18:02,225 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:02,225 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:02,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:02,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:02,324 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:02,324 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:02,327 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:18:02,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:02,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:18:02,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:02,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:02,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:02,331 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:18:02,331 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:02,337 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:18:02,342 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:18:02,342 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9025f11-36e1-4894-bc45-8c77bd811f2e/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:02,345 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:18:02,345 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:18:02,345 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:18:02,345 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:02,379 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:18:02,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:02,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:18:02,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:02,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:18:02,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:02,518 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:18:02,518 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-11-28 03:18:02,525 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 35 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 31 states and 39 transitions. Complement of second has 4 states. [2020-11-28 03:18:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:18:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:18:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2020-11-28 03:18:02,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:18:02,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:02,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 13 letters. Loop has 3 letters. [2020-11-28 03:18:02,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:02,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 28 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 03:18:02,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:02,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-11-28 03:18:02,529 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:18:02,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-11-28 03:18:02,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:18:02,529 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:18:02,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:18:02,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:18:02,529 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:02,530 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:02,530 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:02,530 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:18:02,530 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:18:02,530 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:18:02,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:18:02,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:18:02 BoogieIcfgContainer [2020-11-28 03:18:02,536 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:18:02,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:02,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:02,537 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:02,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:58" (3/4) ... [2020-11-28 03:18:02,540 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:18:02,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:02,543 INFO L168 Benchmark]: Toolchain (without parser) took 5527.22 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.6 MB in the beginning and 93.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:02,544 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 69.2 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:02,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.17 ms. Allocated memory is still 109.1 MB. Free memory was 76.5 MB in the beginning and 80.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:02,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.63 ms. Allocated memory is still 109.1 MB. Free memory was 80.9 MB in the beginning and 78.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:02,550 INFO L168 Benchmark]: Boogie Preprocessor took 61.17 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 76.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:02,551 INFO L168 Benchmark]: RCFGBuilder took 696.50 ms. Allocated memory is still 109.1 MB. Free memory was 76.7 MB in the beginning and 45.9 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:02,551 INFO L168 Benchmark]: BuchiAutomizer took 4302.56 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 45.9 MB in the beginning and 95.0 MB in the end (delta: -49.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:02,552 INFO L168 Benchmark]: Witness Printer took 3.55 ms. Allocated memory is still 132.1 MB. Free memory was 95.0 MB in the beginning and 93.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:02,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 69.2 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 408.17 ms. Allocated memory is still 109.1 MB. Free memory was 76.5 MB in the beginning and 80.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.63 ms. Allocated memory is still 109.1 MB. Free memory was 80.9 MB in the beginning and 78.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.17 ms. Allocated memory is still 109.1 MB. Free memory was 78.8 MB in the beginning and 76.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 696.50 ms. Allocated memory is still 109.1 MB. Free memory was 76.7 MB in the beginning and 45.9 MB in the end (delta: 30.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4302.56 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 45.9 MB in the beginning and 95.0 MB in the end (delta: -49.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.55 ms. Allocated memory is still 132.1 MB. Free memory was 95.0 MB in the beginning and 93.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 3.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 30 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 280 SDtfs, 247 SDslu, 27 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 63ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...